Technical field
[0001]
　The present invention relates to an illumination device and a vehicle to illuminate a predetermined illumination range using a coherent light.
Background technique
[0002]
　Recently, light distribution variable type headlamp that can automatically change the headlamp light distribution in accordance with the running state of the vehicle has been proposed. Such light distribution variable type headlamp, a combination of a LED and a liquid crystal shutter is known. However, in the illumination device combining an LED and a liquid crystal shutter, since LED is large diffuse light source area, it can not be finely controlled light distribution in the optical system of refraction and reflection, also, the light longer distance it is difficult to deliver. Furthermore, LED, since the emission intensity is lower than the conventional lamp light source, in order to obtain a large amount of light as a headlight must list a large number of LED, as well as a high cost and requires a large installation space . Further, it becomes necessary also heat dissipation in the configuration arranging a large number of LED of high light intensity.
[0003]
　Patent Document 1, a light source for emitting a coherent light, is computed hologram pattern as a diffraction beam reproduced by coherent light is irradiated to form a light distribution pattern for a vehicle lamp of a predetermined luminous intensity distribution storage It has been a vehicle lamp comprising: a hologram element, is disclosed.
CITATION
Patent Document
[0004]
Patent Document 1: Laid-Open Patent Publication No. 2012-146621
Summary of the Invention
Problems that the Invention is to Solve
[0005]
　Laser light source for emitting a coherent light, generally, higher emission intensity than the LED, also, since the light emitted from the laser light source is coherent, it is possible to finely control the light distribution, deliver the light longer distance there is the advantage that it is possible. On the other hand, when the coherent light impinges on the scattering reflective surface such as a road surface, and the coherent light reflected by each portion of the scattering reflecting surfaces interfere with each other, there is a problem that speckles are generated. When using a coherent light lighting device for a vehicle as in Patent Document 1, since the speckle generated view of the driver, there is a possibility that the driver's attention is Sogareru.
[0006]
　In Patent Document 1, for the coherent light emitted from the light source is diffused into one side over the entire predetermined illumination area, to finely control the light distribution of the predetermined illumination region, for example, one predetermined illumination area only the illuminating region of the part (or the non-illuminated) it can not.
[0007]
　Further, there may be a demand for illuminating a light distribution nonstandard headlamp according to the running state of the vehicle. If it is possible to illuminate the pedestrians and traffic signs located outside the headlamp light distribution standard by alert the driver to them, it is possible to improve the safety of night driving.
[0008]
　Furthermore, not only the lighting device for a vehicle, in various lighting devices, can be changed as required illumination aspects of the illuminated region is desirable.
[0009]
　The present invention has been made in consideration of such points. An object of the present invention is to provide a lighting device and a vehicle were to change the illumination mode of the illumination area.
Means for Solving the Problems
[0010]
　Lighting apparatus according to one aspect of the present invention includes: a coherent light source for emitting a first coherent light and the second coherent light,
　first it illuminates an illuminated region by diffusing the first coherent light and said second coherent light an optical element for illuminating the second illuminated region by wave diffuse,
　the first coherent light and the incident timing of the second coherent light of the optical element or the first illuminated region and the second illuminated, and a timing controller for controlling the illumination timing of the area individually,
　the optical element includes a first diffusion region where the first coherent light is incident, a second diffusion region where the second coherent light is incident When having a
　first diffusion region, by diffusion of the first coherent light incident is capable illuminate the first illuminated region,
　said second diffusion territory Is the diffusion of the second coherent light incident, the first and the illuminated region is capable illuminate at least partially different from the second illuminated region,
　said first diffusion region, a plurality of first element It has a diffusion region, each of the plurality of first element diffusion region, the diffusion of the first coherent light incident, the first illuminating a corresponding first partial region of the illuminated region, the plurality of At least a portion of said first partial area illuminated by each of the first element diffusion regions are different from each
　second diffusion region has a plurality of second element diffusion region, said plurality of second each two-element diffusion region, the diffusion of the second coherent light incident illuminates the corresponding second partial region of the second illuminated region is illuminated by each of the plurality of second element diffusion region said that At least a portion of the second portion region is different respectively.
[0011]
　The first diffusion region, by diffusion of the first coherent light incident may the first illuminated region conforming to a light distribution standard for headlights a possible illumination,
　the second diffusion region, by diffusion of the second coherent light incident, the second illuminated region outside the light distribution standard may be illuminated.
[0012]
　Wherein the first coherent light and said second coherent light from the coherent light source may further include a scanning unit that scans on said optical element.
[0013]
　The scanning unit, the traveling direction of the light emitted said first coherent light and coherent light source and the second coherent light may have a light scanning member for periodically changing.
[0014]
　The timing controller, the second as the illumination mode of the illuminated area changes periodically or temporarily, in synchronization with the scanning timing of the first coherent light and said second coherent light by the optical scanning member it may control the second incident timing to the optical element of the coherent light or illumination timing of the second illuminated region.
[0015]
　Wherein the first diffusion region and said second diffusion region, respectively, has an elongated shape extending in the axial direction, it may be disposed adjacent in the direction perpendicular to the uniaxial direction.
[0016]
　Further comprising an object detector for detecting an object existing at the second illuminated region,
　the light emission timing control unit, so as to illuminate the object detected by the object detection unit, the second incident timing to the optical element of the coherent light or may control the illumination timing of the second illuminated region.
[0017]
　The object detection unit,
　an imaging device for imaging the second illuminated region,
　and said image processing imaging results of the imaging device, the object recognizing image processing unit of the second illuminated region , it may have.
[0018]
　The object detection unit,
　a position information acquisition unit that acquires position information of the vehicle,
　a storage unit for storing positional information of the object,
　the position information of the vehicle acquired by the position information acquiring unit, the storage unit to on the basis of the position information of the stored object, and the object recognizing processing unit of the second illuminated region
may have.
[0019]
　The optical element may be a holographic recording medium,
　wherein each of the plurality of first element diffusion region of the first diffusion region may be an element hologram area where the interference fringe pattern is formed which differs each ,
　wherein also each of the plurality of second element diffusion region of the second diffusion region may be an element hologram area where the interference fringe pattern is formed which differ respectively.
[0020]
　The optical element may be a lens array unit having a plurality of lens arrays,
　wherein each of the first element diffusion region of the first diffusion region may have a lens array,
　said second diffusion also each of the plurality of second element diffusion region region may have a lens array.
[0021]
　　The vehicle according to an aspect of the present invention includes the lighting device.
Effect of the Invention
[0022]
　According to the present invention, it is possible to change the illumination mode of the illumination area with coherent light.
BRIEF DESCRIPTION OF THE DRAWINGS
[0023]
[1] Figure 1 is a diagram showing a schematic configuration of a lighting apparatus according to a first embodiment of the present invention.
[Figure 2A] Figure 2A is a first coherent light by the optical scanning member is a diagram showing a state that is scanned over the optical element.
[Figure 2B] Figure 2B is a second coherent light by the optical scanning member is a diagram showing a state that is scanned over the optical element.
[Figure 3A] Figure 3A is a diagram showing how the first coherent light diffused by the optical element is incident on the first illuminated region.
[Figure 3B] Figure 3B is a diagram showing a state in which the second coherent light diffused by the optical element is incident on the second illuminated region.
[Figure 4A] Figure 4A, the control of the light emission timing of the first coherent light is a diagram showing an example for illuminating any area of the first illuminated region.
[Figure 4B] Figure 4B is controlled by the light emission timing of the second coherent light is a diagram illustrating an example to illuminate any region of the second illuminated region.
FIG. 5 is a diagram of a first hologram area and a second hologram area adjacent arranged along the incidence surface of the hologram recording medium.
FIG. 6 is a diagram arranging the first hologram area and a second hologram area in the stacking direction.
[7] FIG. 7 is a diagram showing a schematic configuration of a lighting device according to a second embodiment of the present invention.
[8] FIG. 8 is a diagram showing a schematic configuration of a lighting apparatus according to a third embodiment of the present invention.
[9] FIG. 9 is a diagram showing an example of illuminating an area conforming to high beam standard of the first area to be illuminated.
[10] FIG 10 is a diagram showing an example of illuminating an area conforming to the low beam standard of the first area to be illuminated.
[11] FIG 11 is a diagram showing an example of illuminating an object in the second illuminated region.
DESCRIPTION OF THE INVENTION
[0024]
　Hereinafter, with reference to the accompanying drawings, an embodiment of the present invention in detail. In the accompanying drawings herein, for convenience of easy understanding of illustration, the appropriate scale and size ratio of the vertical and horizontal, etc. are exaggerated changed from those of the real.
[0025]
　Also, as used herein, identifies the shape and geometric conditions and the degree thereof, such as "parallel", the "orthogonal", terms and the length of such "identity" and angle values ​​or the like, exact meaning without being bound, and interpreting including range that can expect a similar function.
[0026]
　Figure 1 is a diagram showing a schematic configuration of a lighting apparatus 1 according to the first embodiment of the present invention.
[0027]
　As shown in FIG. 1, the lighting apparatus 1 according to this embodiment, an optical element 3, a coherent light source 4 for emitting a first coherent light L1 and the second coherent light L2, a timing control unit 5, the scanning unit 6 It has a, and.
[0028]
　The optical element 3, the first coherent light L1 illuminates the first illumination zone 10a is diffused, and the second illuminated region 10b by diffusing second coherent light L2 from the coherent light source 4 from the coherent light source 4 to illuminate the.
[0029]
　The timing control unit 5 controls individually illumination timing of the first coherent light L1 and the second incident timing of the optical element 3 of the coherent light L2 or the first illuminated region 10a and the second illuminated region 10b,. The timing control unit 5 may control the light emission timing from the coherent light source 4, may control the incident timing of the first coherent light L1 incident on the optical element 3 and the second coherent light L2, Alternatively, it may control the lighting timing first coherent light L1 and the second coherent light L2 diffused by the optical element 3 is to illuminate the first illuminated region 10a and the second illuminated region 10b.
[0030]
　To control emission timing from the coherent light source 4 may be, for example, controlling the timing of turning on / off of the coherent light source 4. By controlling the light emission timing from the coherent light source 4, to control the incident timing of the optical element 3, and can control the illumination timing of the first illuminated region 10a and the second illuminated region 10b.
[0031]
　And the incident timing of the optical element 3 without changing the light emission timing from the coherent light source 4, to control the illumination timing of the first illuminated region 10a and the second illuminated region 10b is, for example, a first coherent light L1 the or block is transmitted through the second coherent light L2 may be provided switchable optical shutter. Alternatively, it may be provided with the first coherent light L1 alterable optical path switching member the optical path of the second coherent light L2.
[0032]
　Thus, the timing controller 5, and controls the emission timing of the coherent light source 4, a switch such as an optical shutter and the optical path switching member by the timing control, to control the incident timing of the optical element 3, the 1 can be controlled illumination timing of the illuminated region 10a and the second illuminated region 10b. Hereinafter, mainly describes an example in which the timing control unit 5 controls the light emission timing from the coherent light source 4.
[0033]
　Coherent light source 4 includes a first light source unit 4a for emitting first coherent light L1, a second light source unit 4b for emitting second coherent light L2, the. The first light source unit 4a and the second light source unit 4b, may semiconductor laser light source is used for example. The first light source unit 4a and the second light source unit 4b may be provided independently to separate substrates, the first light source unit 4a and the second light source section 4b on a common substrate is arranged it may be a light source module. In order to increase the luminous intensity, the first light source unit 4a and the second light source section 4b may be provided by a plurality. Emission wavelength range of the first coherent light L1 and the emission wavelength region of the second coherent light L2, may be the same or may be different from each other.
[0034]
　The timing controller 5, the light emitting timing of the light emitting coherent light L1, L2 from the first light source unit 4a and the second light source unit 4b, the light source unit 4a, and controls each 4b.
[0035]
　Specifically, for example, the timing controller 5, the light source unit 4a, whether to emit coherent light L1, L2 from 4b, i.e. to control the light emission of the ON / OFF.
[0036]
　In the present embodiment performs the illumination of the first illumination zone 10a using a first coherent light L1 from the light source unit 4a, the illumination of the second illuminated region 10b by using the second coherent L2 from the light source portion 4b Is going. As an example of a specific optical configuration for performing such illumination, as shown in FIG. 1, the light source unit 4a, and the first coherent light L1 from 4b and the scanning unit 6 to change the traveling direction of the second coherent light L2 , it is conceivable to provide an optical element 3 for illuminating the first coherent light L1 from the scanning unit 6 and the first illuminated region 10a by diffusing a second coherent light L2 second illuminated region 10b.
　Alternatively, by omitting the scanning unit 6, the light emitting portion 4a, 4b at by varying the first coherent light L1 traveling direction of the second coherent light L2, it may be incident on the optical element 3. Alternatively, the traveling direction of the first coherent light L1 and the second coherent light L2 diffused by the optical element 3, by changing in a separate optical member and the scanning unit 6, and the second to be first illuminated region 10a an illumination area 10b may illuminate. The following description focuses on an example of providing a scanning unit 6 as shown in FIG.
[0037]
　Scanning unit 6 to scan the first coherent light L1 from the coherent light source 4 a second coherent light L2 on the optical element 3. Scanning unit 6, to the first coherent light L1 by moving the coherent light source 4 a second coherent light L2 may be scanned over the optical element 3, a first coherent light L1 by moving the optical element 3 a it two coherent light L2 may be scanned over the optical element 3, the optical scanning member 6a for changing the traveling direction of the laser light from the light source unit 7 is provided, the first coherent light L1 and the second coherent light L2 it may be scanned over the optical element 3.
[0038]
　Hereinafter, the scanning unit 6 mainly illustrates an example having an optical scanning member 6a. The timing control unit 5, as the illumination mode of the first illuminated region 10a and the second illuminated region 10b changes periodically or temporarily, a first coherent light L1 by the optical scanning member 6a second coherent light L2 in synchronization with the scanning timing of controlling a lighting timing of the first incidence timing of the coherent light L1 to the optical element 3 of the second coherent light L2 or the second illuminated region 10b,.
[0039]
　The optical scanning member 6a over time alter the first traveling direction of the coherent light L1 and the second coherent light L2 from the coherent light source 4, the traveling direction of the first coherent light L1 and the second coherent light L2 does not become constant so as to. As a result, the first coherent light L1 and the second coherent light L2 of the optical scanning member 6a emitted is as to scan the incident surface 3s on the optical element 3.
[0040]
　The optical scanning element 6a, for example, as shown in FIGS. 2A and 2B, having two rotating shafts rotatable reflective devices 13 to 11 and 12 around which extend in a direction crossing each other. Coherent light L1, L2 from the coherent light source 4 that is incident on the reflecting surface 13s of the reflection device 13 is reflected at an angle corresponding to the inclination angle of the reflecting surface 13s, traveling in the direction of the incident surface 3s of the optical element 3 to. The reflective device 13 is rotated in two around the rotation shafts 11 and 12, coherent light L1, L2 will be scanning the incident surface 3s on the optical element 3 are two-dimensionally. Reflective device 13, for example, to repeat the operation of rotating the two around the rotation shaft 11 at a constant period, in synchronism with this period, the coherent light L1, L2 incident surface 3s on the optical element 3 is repeated 2 to dimension scanning.
[0041]
　In this embodiment, the optical scanning member 6a are assumed embodiments provided only one, a first coherent light L1 and the second coherent light L2 emitted by the coherent light source 4, any common light is incident on the scanning member 6a, the traveling direction by the light scanning element 6a is provided over time is changed, it scans the optical element 3. However, as the embodiment of optical scanning member 6a, it is not limited to this, and the optical scanning member corresponding to the first coherent light L1 and the light scanning member corresponding to the second coherent light L2 may be provided separately .
[0042]
　The optical element 3 has an entrance surface 3s of the first coherent light L1 and the second coherent light L2 is incident, the first coherent light L1 and the second coherent light L2 incident on the incident surface 3s by diffusing It illuminates a predetermined range. More specifically, the first coherent light L1 diffused by the optical element 3 passes through the first illuminated region 10a, and illuminates a predetermined range is the actual illumination range. On the other hand, the second coherent light L2 diffused by the optical element 3, the first illuminated region 10a after passing through the at least partially different from the second illuminated region 10b, illuminate a predetermined range is the actual illumination range to. Hereinafter, as a specific example, the first illuminated region 10a is a defined as conforming illumination range in the light distribution standard for headlights of the vehicle by traffic laws of each country, the second illuminated region 10b is the illumination range outside the headlamp light distribution standard. In addition, as the light distribution standard, "Uniform Requirements relating to approval of the light distribution variable headlamp system for a motor vehicle (AFS)" standards and such as JIS D5500 in Japan, in the United States SAE (Society of Automotive Engineers) standard, in Europe ECE include the (Economic Commission for Europe) standards, but are not limited to these.
[0043]
　Here, the illuminated area 10a, 10b is diffused region 14a of the optical element 3, which is the illuminated area of ​​the near-field illuminated by 14b. Illumination range of the far field, rather than the size of the actual illuminated area is often expressed as a diffusion angle distribution in the angular space. The term "illuminated area" in the present specification, in addition to the actual object to be irradiated area (illumination range), shall also encompass diffusion angle range in angular space. Accordingly, the predetermined range to be illuminated by the illumination device 1 of Figure 1, the illuminated area 10a of the near field shown in Figure 1, it can be a much wider area than 10b.
[0044]
　In this embodiment, as shown in FIGS. 2A and 2B, the first diffusion region 14a and the second diffusion region 14b, respectively, it has an elongated shape extending in the axial direction (e.g. horizontal direction), a uniaxial direction They are arranged adjacent in a direction (e.g., vertical direction) perpendicular to.
[0045]
　The usual mode of use of the lighting device 1 according to this embodiment, the first diffusion region 14a for illuminating compatible area headlamp light distribution standards, while substantially the entire is lit, distribution the second diffusion region 14b for illuminating the outside of the optical standard is an embodiment that substantially the entire is turned off can be envisaged. If the first diffusion region 14a and the second diffusion region 14b having an elongated shape are arranged adjacent to the axial direction, since the overall shape becomes more elongated, with ensuring the installation space in the front face of the vehicle it is difficult, It supposed to while normal one half of the elongated during use of the lighting device 1 is lit other half is off, the design property is deteriorated.
[0046]
　On the other hand, as in this embodiment, if the first diffusion region 14a and the second diffusion region 14b having an elongated shape are arranged adjacent in a direction perpendicular to the uniaxial direction, problems and design of the installation space both sexes problems can be solved.
[0047]
　Figure 3A is a diagram showing how the first coherent light L1 diffused by the optical element 3 is incident on the first illuminated region 10a. 3B is a diagram showing a state in which the second coherent light L2 diffused by the optical element 3 is incident on the second illuminated region 10a. The optical element 3 has a first diffusion region 14a corresponding to the first coherent light L1, a second diffusion region 14b corresponding to the second coherent light L2, the. Each diffusion region 14a, the 14b, coherent light L1, L2 respectively corresponding enters. The first diffusion region 14a is to diffuse the first coherent light L1 incident to illuminate the entire area of ​​the first illumination zone 10a as a whole. On the other hand, the second diffusion region 14b is by diffusing second coherent light beam L2 incident to illuminate the entire area of ​​the second illumination zone 10b as a whole.
[0048]
　As shown in FIG. 3A, the first diffusion region 14a has a plurality of first element diffusion region 15a. Each first element diffusion region 15a is to diffuse the first coherent light L1 incident to illuminate the corresponding first partial area 19a in the first illuminated region 10a. At least a portion of the first partial area 19a is different for each element diffusion region 15a.
[0049]
　Further, as shown in FIG. 3B, the second diffusion region 14b has a plurality of second element diffusion region 15b. Each second element diffusion region 15b is by diffusing second coherent light beam L2 incident to illuminate the corresponding second portion region 19b in the second illuminated region 10b. At least a portion of the second portion region 19b is different for each element diffusion region 15b.
[0050]
　Specifically, for example, optical element 3 may be configured using a holographic recording medium 16. The hologram recording medium 16, for example, as shown in FIGS. 3A and 3B, having a first hologram area 17a and the second hologram area 17b. The first hologram region 17a are provided corresponding to the first coherent light L1. The second hologram region 17b are provided corresponding to the second coherent light L2. First coherent light L1 is diffused is incident on the first hologram area 17a illuminates the first illumination zone 10a. Second coherent light L2 is diffused is incident on the second hologram region 17b illuminates the second illumination zone 10b.
[0051]
　As shown in FIG. 3A, the first hologram area 17a has a plurality of first element hologram area 18a. Each of the plurality of first element hologram area 18a, by diffusing the first coherent light L1 incident to illuminate the first partial area 19a corresponding in the first illuminated region 10a. At least a portion of the first partial area 19a where the first element hologram area 18a illuminates is different for every first element hologram area 18a. That is, the first partial area 19a between different first element hologram area 18a is illuminated, at least a portion is different.
[0052]
　Further, as shown in FIG. 3B, the second hologram region 17b has a plurality of second element hologram area 18b. Each of the plurality of second element holograms region 18b, by diffusing the second coherent light beam L2 incident to illuminate the corresponding second portion region 19b in the second illuminated region 10b. At least a portion of the second partial area 19b where the second element hologram region 18b is illuminated is different for each second element hologram area 18b. That is, the second partial area 19b between different second element hologram region 18b is illuminated, at least a portion is different.
[0053]
　Each elementary hologram area 18a, the interference fringe pattern is formed on 18b. Therefore, each element hologram regions 18a, coherent light L1, L2 which is incident on 18b is diffracted by the interference fringe pattern, corresponding partial region 19a of the illuminated region 10a, in 10b, to illuminate the 19b. Interference fringe patterns by adjusting the various, can change the traveling direction of the coherent light L1, L2 is diffracted i.e. diffusing the element holograms regions 18a, by 18b.
[0054]
　Thus, coherent light L1, L2 which is incident on each point of each element hologram regions 18a, within 18b is illuminated region 10a, corresponding partial areas 19a in 10b, to illuminate the 19b. Further, the optical scanning member 6a, each element hologram area 18a, the inside 18b that is scanned by a coherent light L1, L2, the incident position and incident angle of the coherent light L1, L2 incident elements hologram regions 18a, 18b, over time to change the. One element hologram area 18a, coherent light L1, L2 having entered the 18b, the element hologram area 18a, be incident on the position of 18b in the throat, to illuminate a common part region 19a, a 19b. This means that partial area 19a, the incident angle of the coherent light L1, L2 to be incident on each point of 19b means that changes over time. This change in the incident angle is a non-degradable fast the human eye, as a result, the human eye, the scattering pattern of the coherent light L1, L2 uncorrelated are observed are multiplexed. Accordingly, speckle is superimposed which is generated corresponding to the scattering pattern are averaged, it will be viewed by the viewer. Thus, the illuminated area 10a, in 10b, speckle inconspicuous. Moreover, coherent coherent light L1, L2 from the optical scanning member 6a, in order to scan the hologram area 17a, each element hologram area 18a of 17b, and 18b sequentially diffracted by each point of the element holograms region 18a, the 18b have different wavefronts light L1, L2, respectively, these diffracted coherent light L1, L2 is illuminated region 10a, that is superimposed independently on 10b, the illuminated area 10a, the specifications in 10b Le inconspicuous no uniform illuminance distribution is obtained.
[0055]
　In Figure 3A, the first element hologram area 18a is first an example is shown for illuminating the different first part region 19a in the first illuminated region 10a, a part of the first partial region 19a is adjacent it may not overlap with the first partial area 19a. The size of the first partial area 19a may be different for each first element hologram area 18a. Further, according to the arrangement order of the first element hologram area 18a, the corresponding first partial region 19a is not required to be arranged in the first illuminated region 10a. That is, the arrangement order of the first element hologram area 18a in the first hologram area 17a, and the arrangement order of the corresponding first partial area 19a in the first illuminated region 10a, necessarily have to match Absent.
[0056]
　Similarly, in FIG. 3B, the second element hologram region 18b is, an example is shown for illuminating the different second portion region 19b in the second illuminated region 10b, a portion of the second portion region 19b it may overlap the adjacent second partial region 19b. The size of the second portion region 19b may be different for each second element hologram area 18b. Further, according to the arrangement order of the second element hologram region 18b, corresponding second partial region 19b it does not have to be arranged in the second illuminated region 10b. That is, the arrangement order of the second element hologram area 18b in the second hologram region 17b, and the arrangement order of the corresponding second partial area 19b in the second illuminated region 10b, necessarily have to match Absent.
[0057]
　It will now be described in detail the structure of the hologram recording medium 16.
[0058]
　The hologram recording medium 16 can be produced using for example the scattered light from the real scattering plate as the object light. More specifically, the hologram photosensitive material is a matrix of the holographic recording medium 16 is irradiated with the reference beam and the object beam consisting of coherent light having interference with each other, interference fringe patterns by the interference of these light hologram photosensitive are formed in the material, the hologram recording medium 16 is manufactured. The reference beam is used is laser light which is coherent light, as the object light, the scattered light of the incident possible isotropic scattering plate is used for example at low cost.
[0059]
　By irradiating coherent light toward a hologram recording medium 16 from the focal position of the reference beam used in making the hologram recording medium 16, scattering the object light source used in making the hologram recording medium 16 the position of the plate, the reproduced image of the scatter plate is generated. If the object the underlying scattering plate uniformly surface scattering light used in making the hologram recording medium 16, a reproduced image of the scatter plate obtained by the hologram recording medium 16 also becomes a uniform surface illumination , areas where the reproduced image is generated in this scattering plate is illuminated region 10a, 10b.
[0060]
　In this embodiment, by using the optical element 3, so that it is possible to perform illumination control so as not to illuminate only part of the illuminated area. To perform such illumination control using a holographic recording medium 16, each element hologram area 18a, an interference fringe pattern formed 18b becomes complicated. Such complex fringe pattern, instead of forming by using a real object light and the reference light, based on scheduled reproduction wavelength and incident direction of the illumination light, and the image to be reproduced shape, position, etc. it is possible to design using computer Te. Hologram recording medium 16 thus obtained is computer-generated hologram (CGH: Computer Generated Hologram) also called. Further, the Fourier transform hologram may be formed by computer-generated element holograms region 18a, the diffusion angle characteristics at each point on 18b are the same. Further, the illuminated area 10a, is provided an optical member such as a lens in the optical axis rear side of 10b, it may be set the size and position of the actual illumination range.
[0061]
　One advantage of the provision of the holographic recording medium 16 as an optical element 3 is that the light energy density of the coherent light L1, L2 can be reduced by diffusion. Also, one other advantage, because the holographic recording medium 16 is available as a directional planar light source, as compared with the conventional lamp light source (point light source), needed to achieve the same illuminance distribution it is to be lowered the brightness on the light source plane. Thereby, it contributes to improved safety of the coherent light, the illuminated area 10a, even if direct coherent light L1, L2 passing through the 10b by the human eye, compared with the case of direct view of the single point light source, the human eye fear is less a negative impact on.
[0062]
　In the example shown in FIGS. 1 to 3B, the first hologram area 17a and the second hologram region 17b, as shown in FIG. 5, it is adjacently arranged along the incidence surface of each hologram regions 17a, 17b.
[0063]
　Thus, in addition to the first hologram area 17a and the second hologram region 17b are adjacently disposed along the incident surface, as shown in FIG. 6, the first hologram area 17a and the second hologram region 17b is stacked direction arrangement may be. In this case, the interference fringe pattern for each hologram regions 17a, 17b, each hologram regions 17a, is formed in a layer of 17b. As coherent light L1, L2 from the surface to the hologram region located on a side of the back of the holographic recording medium 16 which coherent light L1, L2 from the optical scanning member 6a is incident to reach as far as possible without loss, the hologram regions 17a, 17b it is preferable to increase as much as possible the visible light transmittance. Further, when forming the interference fringe pattern at a position overlapping in the lamination direction, it becomes difficult to receive a coherent light L1, L2 is the layer towards the surface of the back, as shown in FIG. 6, each layer is shifted in the lamination direction interference it is desirable to form a striped pattern.
[0064]
　In Figure 1, although coherent light L1, L2 from the optical scanning member 6a is an example to diffuse through the optical element 3, the optical element 3 may be one which diffuse reflected coherent light L1, L2. For example, when using a holographic recording medium 16 as an optical element 3, the hologram recording medium 16 may be a transmission type in the reflection type. In general, the reflection-type hologram recording medium 16 (hereinafter, the reflection-type holograms), the transmission type of hologram recording medium 16 (hereinafter, transmission-type holograms) compared to a higher wavelength selectivity. That is, the reflection-type holograms can be stacked interference fringe pattern corresponding to different wavelengths, it is possible to diffract the coherent light of a desired wavelength only desired layer. Also, in terms of easy removal of the influence of the 0th order light, the reflection-type holograms is excellent. On the other hand, transmission type holograms is diffracted possible spectrum is wide, but wider tolerance coherent light source 4, different when the stacked interference fringe patterns corresponding to the wavelength, coherent light having a desired wavelength in a layer other than the desired layer There will be diffraction. Therefore, in general, the transmission-type holograms are difficult to stack structure.
[0065]
　Further, specific forms of holographic recording medium 16 may be a volume hologram recording medium using a photopolymer, may be a type of volume hologram recording medium for recording using a photosensitive medium comprising silver halide material . Alternatively, it may be a holographic recording medium of the relief (embossed).
[0066]
　In this embodiment, the optical scanning member 6a is a first coherent light L1 and the second coherent light L2 from the coherent light source 4, and adapted to cyclically scan over the incident surface 3s of the optical element 3, the timing controller 5 in synchronization with the scanning timing of the first coherent light L1 and the second coherent light L2 by the optical scanning member 6a, and controls the light emission timing of the first coherent light L1 and the second coherent light L2 separately.
[0067]
　Each first element hologram area 17a by whether irradiation of the first coherent light L1 is controlled by the timing controller 5, as shown in FIG. 4A, select any area in the first illumination zone 10a it can be illuminated. In this case, the first partial region 19a of the selected region, at a rate as if the human eye is simultaneously illuminated, will be illuminated in sequence by the first coherent light L1.
[0068]
　Further, by controlling whether or not to irradiate the second coherent light L2 by the timing controller 5 to the second element diffusion region 15b, as shown in FIG. 4B, any area in the second illumination zone 10b can be selectively illuminate. At this time, the second partial area 19b of the selected region, at a rate as if the human eye is simultaneously illuminated, will be illuminated in sequence by a second coherent light L2.
[0069]
　Next, with reference to FIGS. 9 to 12, a description of the operation of the embodiment having such a configuration.
[0070]
　As shown in FIG. 9, if the vehicle or an oncoming vehicle traveling in front in the first illuminated region 10a does not exist, the timing controller 5, the area conform to the standard of the high beam (also called traveling headlamp) (in the illustrated example, the entire area of ​​the first illumination zone 10a) so as to illuminate the controls the light emission timing of the first coherent light L1.
[0071]
　Specifically, for example, the timing controller 5, as the first coherent light L1 is irradiated onto the whole area of ​​the first hologram area 17a, to control the emission timing of the first coherent light L1. Thus, as shown in FIG. 9, the entire area of ​​the first illumination zone 10a is illuminated, it is possible to visually recognize the pedestrian 31 or the like to walk forward.
[0072]
　On the other hand, as shown in FIG. 10, when the vehicle 33 and the oncoming vehicle traveling in front in the first illuminated region 10a is present, the timing controller 5, adapted to the specifications of the low beam (also referred to as passing headlight) regions (e.g., first region below the horizontal plane of the illuminated area 10a) so as to illuminate the controls the light emission timing of the first coherent light L1.
[0073]
　Specifically, for example, the timing controller 5, one of the first plurality of first partial area 19a within the illuminated area 10a, specifies a partial area 19 corresponding to the matching region low beam standards are identified the first element hologram area 18a corresponding to the partial region 19 is a first coherent light L1 is irradiated, as the other of the first element hologram area 18a is first coherent light L1 is not irradiated, the first coherent controlling the emission timing of the light L1. Thus, as shown in FIG. 10, regions conform to the low beam specifications of the first illuminated area 10a is illuminated, the other region in the first illuminated region 10a is non-illuminated. Thus, the first coherent light L1 can be prevented from being dazzled the driver of the vehicle 33 and the oncoming vehicle traveling in front.
[0074]
　Further, as shown in FIG. 11, the pedestrian in the first with a vehicle 33 and the oncoming vehicle traveling in front in the illuminated area 10a is present, the second illumination zone 10b outside the headlamp light distribution standards 31 If object such or traffic sign 32 is present, the timing controller 5, the low beam standards conforming region of (passing headlight also called) (e.g., the region below the horizontal plane of the first illumination zone 10a ) so as to illuminate the controls the light emission timing of the first coherent light L1, so as to illuminate the object 31 in the second illuminated region 10b, controls the light emission timing of the second coherent light L2 .
[0075]
　Specifically, for example, the timing controller 5, as in the example shown in FIG. 10, among the first plurality of first partial area 19a within the illuminated region 10a, corresponding to the matching region low beam standards the first partial area 19a specified that, although in the first element hologram area 18a corresponding to the first partial region 19a is first coherent light L1 specified is irradiated, the other first element hologram area 18a as the first coherent light L1 is not irradiated, and controls the light emission timing of the first coherent light L1. Thus, as shown in FIG. 12, regions conform to the low beam specifications of the first illuminated area 10a is illuminated, the other region in the first illuminated region 10a is non-illuminated.
[0076]
　Further, the timing controller 5, among the second plurality of second partial region 19b within the illuminated area 10b, identifying at least partially overlaps the second portion region 19b and the object 31, identified the second element hologram region 18b corresponding to the second partial area 19b as is the second coherent light L2 is irradiated, the other second element hologram region 18b is a second coherent light L2 are not illuminated, the second coherent controlling the emission timing of the light L2. Thus, as shown in FIG. 12, at least partially overlaps a region between the object 31 and 32 of the second illuminated region 10b is illuminated, the other region in the second illuminated region 10b becomes non-illuminated . Thus, it is possible to call attention of the driver with respect to pedestrians 31 and traffic sign 32 located outside the light distribution standard and second coherent light L2 for illuminating the outside of the light distribution standard of oncoming vehicle It can be prevented from being dazzling the driver.
[0077]
　According to the present embodiment as described above, the timing of the first coherent light L1 for scanning the first diffusion region 14a and the second coherent light L2 scans the second diffusion region 14b is incident on the optical element 3, or timing of irradiating the second coherent light L2 from the first coherent light L1 is diffused by the first diffusion region 14a is diffused by the second diffusion region 14b in the first illuminated region 10a and a second illumination zone 10b the by controlling the timing controller 5, it is possible to arbitrarily change the illumination mode of the first illuminated region 10a and the second illuminated region 10b. As a specific example, according to this embodiment, the diffusion of the first coherent light beam L1 in the first diffusion region 14a, together with the first illumination zone 10a fits headlamp light distribution standard can be illuminated , by diffusion of the second coherent light L2 in the second diffusion region 14b, since it is possible illuminate the second illumination zone 10b is outside the light distribution standard region 10a and the light distribution compatible with the headlamp light distribution standard it can be illuminated both nonstandard region 10b.
[0078]
　Further, according to this embodiment, the first diffusion region 14a has a plurality of first element diffusion region 15a, the first element diffusion region 15a is first subregion corresponding in the first illumination zone 10a for illuminating 19a, by controlling whether or not to irradiate the first coherent light L1 by the timing controller 5 to the first element diffusion region 15a, selectively any region within the first illumination zone 10a it can be illuminated to. Thus, it is possible to illuminate easily switch between matching area in the first high beam conforming to standard region and a low beam in the illuminated area 10a standard, the forward first illuminated region 10a when the traveling vehicle 33 and the oncoming vehicle is present, the first coherent light L1 can be prevented from being dazzled the driver of the vehicle 33 and the oncoming vehicle traveling in front.
[0079]
　Further, according to this embodiment, the second diffusion region 14b has a plurality of second element diffusion region 15b, the second element diffusion region 15b and the second partial region corresponding in the second illumination zone 10b for illuminating 19b, by controlling whether to illuminate a second coherent light L2 by the timing controller 5 to the second element diffusion region 15b, selectively any region in the second illumination zone 10b it can be illuminated to. Thus, by selectively illuminating the pedestrian 31 or traffic sign 32 located in the second illuminated region 10b of the outside light distribution standards, it is possible to call attention of the driver with respect to them, the possible to prevent 2 coherent light L2 resulting in dazzle the driver of an oncoming vehicle.
[0080]
　Further, according to this embodiment, the optical scanning member 6a coherent light L1, L2 each element diffusion region 15a, and scanned within 15b, coherent light incident on each point of each element diffusion regions 15a, 15b on L1, L2 is the corresponding partial area 19a, for illuminating the entire area of ​​the 19b, the illuminated area 10a, the partial regions 19a in 10b, to the incident angle of the coherent light L1, L2 is changed over time in 19b it may be less noticeable speckle in the illuminated region 10a, 10b.
[0081]
　Note that it is possible to make various modifications to the embodiment described above. Hereinafter, with reference to the drawings, a modified example will be described. In the drawings used in the following description and the following description, the parts that may be configured similarly to the embodiment described above will be referred to with the same reference numerals as those used for corresponding parts in the embodiment described above and redundant description will be omitted. Also, when the effects obtained in the embodiment described above it is clear that also obtained in the modification, it may be omitted from the description.
[0082]
　Figure 9 is a diagram showing a schematic configuration of a lighting apparatus 1 according to a second embodiment of the present invention.
[0083]
　As shown in FIG. 9, the lighting device 1 according to the second embodiment further includes an object detecting unit 21 for detecting an object existing in the second illuminated region 10b.
[0084]
　Object detection unit 21, more specifically, recognizes that the imaging device 22 for imaging the inside of the second illuminated region 10b, and the image processing imaging results of the imaging device 22, the object in the second illumination zone 10b It has an image processing unit 23 for the.
[0085]
　The imaging device 22, for example, may commercial imaging device CCD is mounted that converts an electrical signal emitted or reflected light from the object is used to present in the second illuminated region 10b. The image processing unit 23, and image processing the imaging result of the imaging device 22, when the object in the second illuminated region 10b is determined whether there was determined to exist, the second illuminated identifying a second partial area 19b overlapping with at least a portion of the object in the region 10b.
[0086]
　The timing controller 5, so as to illuminate the object detected by the object detection unit 21, controls the light emission timing of the second coherent light L2.
[0087]
　Specifically, for example, the timing controller 5, the second element hologram region 18b corresponding to the second partial area 19b specified by the image processing unit 23 but a second coherent light L2 is irradiated, the other the second element hologram region 18b such that the second coherent light L2 is not irradiated, and controls the light emission timing of the second coherent light L2. This allows the driver driving the vehicle without selecting a region to be illuminated in the second illumination zone 10b manually, automatically illuminate the object in the second illuminated region 10b, driving safety can be improved.
[0088]
　Figure 10 is a diagram showing a schematic configuration of a lighting apparatus 1 according to a third embodiment of the present invention.
[0089]
　As shown in FIG. 10, in the third embodiment, the object detection unit 21, a position information acquiring section 24 for acquiring position information of the vehicle, a storage unit 25 for storing positional information of the object, location the position information of the vehicle acquired by the information acquisition unit 24, based on the position information of the stored object in the storage unit 25, and recognizes the information processing unit 26 of the object in the second illuminated region 10b, the has.
[0090]
　The position information acquisition unit 24 may commercial GPS receiver is used, for example using a global positioning system (GPS) to obtain the position information of the vehicle. Storage unit 25 in advance to the wide-area map data may be those stored, or may be stored properly reads only the map data around the current position of the vehicle from an external database.
[0091]
　The information processing unit 26, the position information of the vehicle acquired by the position information acquiring unit 24, based on the position information of the object stored in the storage unit 25, the object in the second illuminated region 10b is present whether the judged to, when it is determined that the present, identifies a second partial area 19b overlapping with at least a portion of the object in the second illuminated region 10b.
[0092]
　According to the third embodiment, for reasons such as bad weather, the imaging device 22 even if it is not possible to clearly image the second illuminated region, the object stored in the storage unit 25 if it is possible to illuminate it properly recognize and.
[0093]
　The specific form of the optical element 3 is not limited to the holographic recording medium 16 may be a variety of diffusing member capable of finely divided plurality of elements diffusion region 15a, the 15b. For example, it may be constituted an optical element 3 by using the elements diffusion region 15a, the lens array unit that respectively one lens array 15b. In this case, the element diffusion region 15a, the lens array is provided for each 15b, a first partial area 19a where the lens array in the first diffusion region 14a corresponding in the first illumination zone 10a and the lighting, second diffusion each lens array in the region 14b is the shape of each lens array to illuminate the corresponding portion region 19b in the second illuminated region 10b is designed. Each first portion region 19a in the first illuminated region 10a is at least partially, being different respective second partial region 19b in the second illuminated region 10b also at least partially differ there. Thus, similarly to the case where the optical element 3 by using a hologram recording medium 16, by arbitrarily adjusting the light emission timing of the first coherent light L1, illumination anywhere in the first illumination zone 10a embodiments can be made to different from the illumination mode of the other part in the first illumination zone 10a, by arbitrarily adjusting the light emission timing of the second coherent light L2, anywhere in the second illumination zone 10b it can be the lighting manner difference between the illumination mode of the other part in the second illumination zone 10b.
[0094]
　Further, in the embodiment described above, the first coherent light L1 and the second coherent light L2 from the coherent light source 4, was supposed to be scanned on the optical element 3 by using the optical scanning member 6a, thereto limited not by providing a second laser array for emitting a first laser array for emitting a first coherent light L1 and the second coherent light L2 to the coherent light source 4, the first coherent light L1 from the first laser array with illuminating the first diffusion region 14a of the optical element 3, the second coherent light L2 from the second laser array may be configured to illuminate a second diffusion region 14b of the optical element 3. In this case, it is possible to omit the optical scanning member 6a, device configuration is simplified. However, in order to suppress the occurrence of speckle, who configured to scan on the optical element 3 is preferably a first coherent light L1 and the second coherent light L2 an optical scanning member 6a.
[0095]
　Further, in the embodiment described above has been using coherent light of a single emission wavelength range as the first coherent light L1, not limited to this, each light emission wavelength range as the first light source section 4a is different coherent light provided with a plurality of laser light sources for emitting, to the optical element 3, by providing a plurality of first diffusion region 14a where the light emitting wavelength range corresponding to each of the different coherent light in the first illumination zone 10a, the second 1 may be adapted to the emission wavelength range which is diffused by the diffusion region 14a is different coherent light is illuminated superimposed with. For example, as the first coherent light L1, when using the red coherent light and green coherent light and blue coherent light, first illuminated region 10a is intermingled these three colors are illuminated with white It will be.
[0096]
　Similarly, in the embodiment described above has been using coherent light of a single emission wavelength range as the second coherent light L2, not limited to this, coherent light emission wavelength ranges each as a second light source section 4b is different provided with a plurality of laser light sources for emitting, to the optical element 3, by providing a plurality of second diffusion region 14b of emission wavelength regions corresponding to each of the different coherent light, in the second illuminated region 10a, each it may be adapted to be illuminated emission wavelength region which is diffused by the second diffusion region 14a is superimposed different coherent light. For example, the second coherent light L2, when using the red coherent light and green coherent light and blue coherent light, a second illumination zone 10b are intermingled these three colors are illuminated with white It will be.
[0097]
　In the first to third embodiments described above, an example has been described of providing a second illumination zone 10b of the light distribution nonstandard first illuminated region 10a conforming to a light distribution standard for headlights of the vehicle the lighting device according to the first to third embodiments can also be applied to distribution other than the light standard applications headlights of the vehicle. For example, when performing the illumination of the stage of the concert hall, with a first illumination zone 10a as a main lighting of the stage, it may be used a second illumination zone 10b as a sub-lighting. So as not to dazzle the person on stage illumination light, it is desirable to non-illuminated as needed for some partial areas 19 in the first illumination zone 10a. The first illuminated region 10a is set at the center portion of the stage, the second illumination zone 10b may be set around the stage. Thus, a person who is in the middle of the stage can be illuminated by the first illumination zone 10a, to illuminate a person emerging from the sleeve of the stage in the second illuminated region 10b. Also move the person within the stage, by switching the illumination on / off for each partial region of the first illumination zone 10a and the second illuminated region 10b, illuminating it tracks the moving person can. When the first coherent light L1 and the second coherent light L2 contains light of a plurality of wavelength ranges can be arbitrarily changed illumination color of the stage.
[0098]
　In the first to third embodiments described above, the second illumination zone 10b disposed so as to surround the first illuminated region 10a, the position and size of the first illuminated region 10a and a second illumination zone 10b an example is shown which is fixed, at least one of the position and size of the first illuminated region 10a and a second illumination zone 10b may be arbitrarily adjusted. As an example, if such can be adjusted at least one of the first scanning range of the coherent light L1 and the second coherent light L2 on the optical element 3 in the scanning unit 6, the first illuminated region 10a and the second illuminated At least one of the position and the size of the area 10b becomes adjustable. Alternatively, the scanning unit 6 separately, and add some optical element may be adjusted at least one of the position and size of the first illuminated region 10a and the second illuminated region 10b. Thus, the position and or size of the first illuminated region 10a and the second illuminated region 10b, a posteriori adjustable the overlapping degree of the first illuminated region 10a and the second illuminated region 10b.
[0099]
　It should be understood that the disclosed invention by the form of the individual embodiments described above is limited. The embodiments may be appropriately combined within a range that does not contradict the processing contents.
DESCRIPTION OF SYMBOLS
[0100]
1 lighting device
3 optical element
3s incidence surface
4 a coherent light source
4a first light source unit
4b the second light source unit
5 timing controller
6 scanning unit
6a beam scanning member
10a first illuminated region
10b second illuminated region
11, 12 rotation shaft
13 reflective device
13s reflecting surface
14a first diffusion region
14b second diffusion region
15a first element diffusion region
15b second element diffusion region
16 the hologram recording medium
first hologram area 17a
17b second hologram region
18a first element hologram region
18b first 2 element hologram regions
19a first partial region
19b second partial region
21 object detecting unit
22 imaging device
23 image processing unit
24 the position information acquisition unit
25 storage unit
26 the information processing unit
31 object
(pedestrian) 32 object (Transport
label) vehicles 33 traveling ahead

The scope of the claims
[Claim 1]
　A coherent light source for emitting a first coherent light and the second coherent light,
　wherein the first coherent light illuminates the first illuminated region by diffusing, and said second second area to be illuminated by the coherent light is a wave spread an optical element for illuminating a
　first coherent light and the incident timing of the second coherent light of the optical element or timing to individually control the illumination timing of the first illuminated region and the second illuminated region, and a control unit, a
　said optical element has a first diffusion region where the first coherent light is incident, a second diffusion region where the second coherent light is incident, a
　first diffusion regions, by diffusion of the first coherent light incident is capable illuminate the first illuminated region,
　said second diffusion region, a second coherent incident Of the diffusion, the first and the illuminated region is capable illuminate at least partially different from the second illuminated region,
　the first diffusion region has a plurality of first element diffusion region, said plurality of each of the first element diffusion region, the diffusion of the first coherent light incident illuminates the corresponding first partial region of the first illuminated region, illuminated by each of the plurality of first element diffusion region At least a portion of the first portion region is, are different from each
　second diffusion region has a plurality of second element diffusion regions, each of the plurality of second element diffusion region, the incident by diffusion of the second coherent light, the second illuminating a corresponding second partial region of the illuminated region, at least one second partial area illuminated by each of the plurality of second element diffusion region parts are, Respectively different to that
lighting device.
[Claim 2]
　The first diffusion region, by diffusion of the first coherent light incident is capable illuminate the first illuminated region conform to the headlamp light distribution standards,
　the second diffusion region is incident by diffusion of the second coherent light illumination apparatus according to claim 1 is capable illuminating the second illuminated region outside the light distribution standard.
[Claim 3]
　The first coherent light and said second coherent light from the coherent light source further comprises a scanning unit that scans on said optical element
lighting device according to claim 1.
[Claim 4]
　The scanning unit, the lighting device according to claim 3 having an optical scanning member for the traveling direction of the emitted first coherent light and said second coherent light periodically changes in the coherent light source.
[Claim 5]
　The timing controller, the second as the illumination mode of the illuminated area changes periodically or temporarily, in synchronization with the scanning timing of the first coherent light and said second coherent light by the optical scanning member the lighting device according to claim 4 for controlling the second incident timing to the optical element of the coherent light or illumination timing of the second illuminated region.
[Claim 6]
　Wherein the first diffusion region and said second diffusion region, respectively, has an elongated shape extending in the axial direction, are arranged adjacent in a direction orthogonal to the uniaxial direction
lighting device according to claim 1 .
[Claim 7]
　Further comprising an object detector for detecting an object existing at the second illuminated region,
　the light emission timing control unit, so as to illuminate the object detected by the object detection unit, the second controlling the incident timing of the optical element or the illumination timing of the second illuminated region, coherent light
illumination apparatus according to claim 1.
[8.]
　The object detection unit,
　an imaging device for imaging the second illuminated region,
　and said image processing imaging results of the imaging device, the object recognizing image processing unit of the second illuminated region ,
having a
lighting device according to claim 7.
[Claim 9]
　The object detection unit,
　a position information acquisition unit that acquires position information of the vehicle,
　a storage unit for storing positional information of the object,
　the position information of the vehicle acquired by the position information acquiring unit, the storage unit based on the position information of the stored object to, and the information processing unit recognizes the object of the second illuminated region
having the
lighting device according to claim 7.
[Claim 10]
　Said optical element is a holographic recording medium,
　wherein each of the plurality of first element diffusion region of the first diffusion region is an interference fringe pattern which differs respectively formed element hologram region,
　said second diffusion region also each of the plurality of second element diffusion regions, an element hologram area where the interference fringe pattern is formed which differs each
lighting device according to claim 1.
[Claim 11]
　Wherein the optical element is a lens array unit having a plurality of lens arrays,
　wherein each of the first element diffusion region of the first diffusion region has a lens array,
　a plurality of second second diffusion region also each element diffusion region has a lens array
illumination device according to claim 1.
[Claim 12]
　Vehicle equipped with a lighting device according to claim 2.