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A Head Up Display

Abstract: A head-up display (100), that has, a housing (105), a combiner (107), is disclosed. The housing (105) comprising a projector (101), a plurality of reflector modules (103), a diffuser (106). Each of the plurality of reflector modules (103) is adapted to perform one of transmission of the incident light P to adjacent reflector module and reflection of the incident light P at a plurality of angles respectively, where the incident light P is received from the projector (101). The diffuser (106) receives the reflected light from the plurality of reflector modules (103) which is incident on the diffuser (106). Further, the combiner (107) receives the incident light from the diffuser (106) at a predetermined angle. The combiner (107) reflects the incident light, received from the diffuser (106) at the predetermined angle, and form a flexible virtual image with respect to a line of sight of a driver.

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Patent Information

Application #
Filing Date
06 September 2022
Publication Number
37/2022
Publication Type
INA
Invention Field
PHYSICS
Status
Email
mail@lexorbis.com
Parent Application
Patent Number
Legal Status
Grant Date
2025-11-19
Renewal Date

Applicants

UNO Minda Limited
Village Nawada, Fatehpur, P.O. Sikanderpur Badda, District- Gurgaon 122004, Haryana, India

Inventors

1. JHA, Abhas
Village Nawada, Fatehpur, P.O. Sikanderpur Badda, District- Gurgaon 122004, Haryana, India
2. NAYAK, Shibabrata
Village Nawada, Fatehpur, P.O. Sikanderpur Badda, District- Gurgaon 122004, Haryana, India
3. VAISHYA, Anurag
Village Nawada, Fatehpur, P.O. Sikanderpur Badda, District- Gurgaon 122004, Haryana, India
4. NALAWADE, Anup
Village Nawada, Fatehpur, P.O. Sikanderpur Badda, District- Gurgaon 122004, Haryana, India

Specification

FIELD OF THE INVENTION

The present disclosure discloses a head-up display. More particularly, the present disclosure discloses the head-up display having a plurality of reflector modules for providing virtual image to a viewer.

BACKGROUND

Generally, while driving a vehicle on a road, the driver/rider faces many challenges associated with road safety, personal safety etc. The driving activity is highly complex, mainly due to time constraints for the driver/rider to detect, perceive, process information before taking decision and react accordingly. Further, the driver/rider has to take all these decisions while driving the vehicle in a fraction of second. Further, to support the driver/rider for taking these decisions, an instrument panel is provided in the vehicle. The instrument panel showcase various data related with the vehicle, where the driver, who also act as a viewer, views the relevant data provided in the instrument panel of the vehicle. However, this creates another problem where the driver/rider has to move/refocus his/her eyes away from the road to check the data and take decisions accordingly. This makes the driver of the vehicle prone to accident and thus increases issue of the road safety and the personal safety of the rider.

To overcome this issue, conventionally, many technological developments have taken place. One such development is head-up display. The head-up display is a transparent display that provides virtual image of required data of the vehicle in a line of sight of the driver/rider through a combiner. The head-up display includes a projector and the combiner, where the combiner is installed at a predetermined distance with respect to the projector. The projector emits incident light of defined pixels and attribute of each pixels forms a real image. The incident light is emitted to the combiner through a mirror, where the combiner reflects the incident light and generates the virtual image which is fixed with respect to the line of sight of the driver/rider. The combiner is a curved sheet of glass/plastic with 20% reflectivity. The incident light falls on the concave curved surface of the combiner and thus, the real image (immediate image) forms a virtual image at a predetermined distance from the combiner in the direction of travel of the incident lights as emitted from the projector. Therefore, the location of generation of the virtual image is dependent on the distance between the combiner and a location of a real image formed by the incident light emitted from the projector. The dependency of the location of the virtual image on the location of the real image is by a mirror law equation, where the combiner is a ‘concave curved reflector’, the real image is an object and the virtual image is the imagen which is formed well within a focal length of the combiner.

However, the conventional head-up display has its own limitation. The conventional head-up display provides a virtual image at a fixed distance to the driver/rider on the vehicle. This is because the focal length of the combiner is fixed and also, the distance between the combiner and the real image formed by the projector is fixed. This lead to a problem that the driver/rider has to refocus his/her eyes from the road to view information provided by the virtual image as formed on the head-up display. For example, when the vehicle is moving with slower speed and the driver is focusing on objects on the road, thus, the driver/rider has to refocus his/her eyes from the road to the head-up display to see the required information of the vehicle. Similarly, when the vehicle is moving with a higher speed, they again have to refocus his/her eyes from the road to the head-up display to see the required information of the vehicle. Thus, this raises on road safety issue for the driver driving the vehicle, especially at night.

Further, many technological solutions have been proposed to provide flexible virtual image in the vehicle. One of the solutions discloses a device with a moving lens. The configuration as discloses changes a distance formation of the real image formed by the incident light of the projector which inevitably changes the location of the formation of the virtual image on the combiner. However, this configuration has its own disadvantages as it requires special machining and calibration of the moving lens which may lead to wear and tear of the moving lens while assembling the moving lens in the device. Further, the configuration as disclosed also cannot provide the instantaneous change in the location of the virtual image and thus cannot form a plurality of set of virtual images with respect to the light of sight of the driver.

Therefore, there is a need of providing head-up display which generates a plurality of flexible virtual image with respect to the line of sight of the driver. For example, when the vehicle is moving at slower speed where the driver is focusing on objects on roads which are near and thus it is preferable to have the location of the virtual image on the head-up display at a close distance from the eye of the driver and be in the line of sight of the driver. Similarly, when the vehicle is moving at higher speed where the driver is focusing on objects on roads which are far away and thus it is preferable to have the location of the virtual image on the head-up display at a far distance from the eye of the driver and be in line of sight of the driver.

Hence, there is a need of providing head-up display which generates a flexible virtual image with respect to the line of sight of the driver and also overcome abovementioned problems.

SUMMARY

This summary is provided to introduce a selection of concepts, in a simplified format, that are further described in the detailed description of the invention. This summary is neither intended to identify key or essential inventive concepts of the invention and nor is it intended for determining the scope of the invention.

The aim of the present disclosure is to provide a head-up display having a plurality of reflector modules which generates a flexible virtual image with respect to a line of sight of a driver, ensuring on road safety of the driver driving a vehicle.

In an embodiment, a head-up display, that has, a housing, a combiner, is disclosed. The housing comprising a projector, a plurality of reflector modules, a diffuser. The projector is adapted to emit incident light to form a real image away from a line of sight of a driver. The plurality of reflector modules is installed and tilted with respect to the projector. The plurality of reflector modules is adapted to receive the incident light from the projector. Each of the plurality of reflector modules is adapted to perform one of transmission of the incident light to adjacent reflector module from the plurality of reflector modules and reflection of the incident light at a plurality of angles respectively. The diffuser is positioned downwardly with respect to the plurality of reflector modules. The diffuser receives the incident light, reflected from the plurality of reflector modules at the plurality of angles. Further, the reflected light from the plurality of reflector modules is incident on the diffuser. Further, the combiner is positioned in front of the housing. The combiner is adapted to receive the incident light from the diffuser at a predetermined angle. The combiner reflects the incident light, received from the diffuser at the predetermined angle, and form a flexible virtual image with respect to the line of sight of the driver.

According to the present disclosure, the light reflected from the reflector modules at the plurality of angles ensures formation of the flexible virtual image with respect to the line of sight of the driver. This also ensures that that the driver while driving the vehicle does not have to shift his/her eyes to see the relevant information/data provided on the head-up display, thus ensuring on road safety of the driver.

To further clarify advantages and features of the present disclosure, a more particular description of the invention will be rendered by reference to specific embodiments thereof, which is illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features, aspects, and advantages of the present disclosure will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein:

Figure 1A illustrates an exploded view of a head-up display, in accordance with an embodiment of the present disclosure;
Figure 1B illustrates a top view of the head-up display, in accordance with an embodiment of the present disclosure;
Figure 2A illustrates an exploded view of a plurality of reflector modules of the head-up display, in accordance with an embodiment of the present disclosure;
Figure 2B is a schematic view of a control unit and the plurality of reflector modules, in accordance with an embodiment of the present disclosure;
Figure 2C is a top view of the plurality of reflector modules, in accordance with an embodiment of the present disclosure;
Figure 2D is a side view of the plurality of reflector modules with transmitted and incident lights, in accordance with an embodiment of the present disclosure; and
Figure 2E is a illustrates formation of a flexible virtual image in line of sight of a driver, in accordance with an embodiment of the present disclosure.

Further, skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and may not have necessarily been drawn to scale. Furthermore, in terms of the construction of the device, one or more components of the device may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the embodiments of the present disclosure so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.

DETAILED DESCRIPTION OF FIGURES

For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated system, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skilled in the art to which invention belongs. The system and examples provided herein are illustrative only and not intended to be limiting.

It should be appreciated by a person skilled in the art that the terminology and structure employed herein is for describing, teaching, and illuminating some embodiments and their specific features and elements and therefore, should not be construed to limit, restrict or reduce the spirit and scope of the present disclosure in any way.

For example, any terms used herein such as, “includes,” “comprises,” “has,” “consists,” and similar grammatical variants do not specify an exact limitation or restriction, and certainly do not exclude the possible addition of one or more features or elements, unless otherwise stated. Further, such terms must not be taken to exclude the possible removal of one or more of the listed features and elements, unless otherwise stated, for example, by using the limiting language including, but not limited to, “must comprise” or “needs to include.”

Whether or not a certain feature or element was limited to being used only once, it may still be referred to as “one or more features” or “one or more elements” or “at least one feature” or “at least one element.” Furthermore, the use of the terms “one or more” or “at least one” feature or element do not preclude there being none of that feature or element, unless otherwise specified by limiting language including, but not limited to, “there needs to be one or more...” or “one or more elements is required.”

Unless otherwise defined, all terms and especially any technical and/or scientific terms, used herein may be taken to have the same meaning as commonly understood by a person ordinarily skilled in the art.

Reference is made herein to some “embodiments.” It should be understood that as per one embodiment is an example of a possible implementation of any features and/or elements of the present disclosure. Some embodiments have been described for the purpose of explaining one or more of the potential ways in which the specific features and/or elements of the proposed disclosure fulfil the requirements of uniqueness, utility, and non-obviousness.

Use of the phrases and/or terms including, but not limited to, “a first embodiment,” “a further embodiment,” “an alternate embodiment,” “one embodiment,” “an embodiment,” “multiple embodiments,” “some embodiments,” “other embodiments,” “further embodiment”, “furthermore embodiment”, “additional embodiment” or other variants thereof do not necessarily refer to the same embodiments. Unless otherwise specified, one or more particular features and/or elements described in connection with one or more embodiments may be found in one embodiment, or may be found in more than one embodiment, or may be found in all embodiments, or may be found in no embodiments. Although one or more features and/or elements may be described herein in the context of only a single embodiment, or in the context of more than one embodiment, or in the context of all embodiments, the features and/or elements may instead be provided separately or in any appropriate combination or not at all. Conversely, any features and/or elements described in the context of separate embodiments may alternatively be realized as existing together in the context of a single embodiment.

Any particular and all details set forth herein are used in the context of some embodiments and therefore should not necessarily be taken as limiting factors to the proposed disclosure.

Embodiments of the present disclosure will be described below in detail with reference to the accompanying drawings.

For the sake of clarity, the first digit of a reference numeral of each component of the present disclosure is indicative of the Figure number, in which the corresponding component is shown. For example, reference numerals starting with digit “1” are shown at least in Figure 1. Similarly, reference numerals starting with digit “2” are shown at least in Figure 2.

Figure 1A illustrates an exploded view of a head-up display 100, in accordance with an embodiment of the present disclosure. Figure 1B illustrates a top view of the display 100, in accordance with an embodiment of the present disclosure.

The head-up device 100 is installed in a vehicle to provide a virtual image of required information on a combiner 107. The head-up display 100 includes a plurality of reflector modules 103 for providing a flexible virtual image with respect to a line of sight of a driver on the combiner 107.

Referring Figure 1A-1B, the head-up display 100 may include, but is not limited to, a housing 105 and the combiner 107. The housing 105 comprises a projector 101, a converging lens 102, a plurality of reflector modules 103, a mirror 104, a diffuser 106, among other examples, details of which will be provided in subsequent paragraphs.

Referring to figure 1A-1B, the projector 101 is installed in the housing 105. The projector 101 is adapted to emit incident light P (as shown in Figure 2C) to form a real image away from the line of sight of the driver. The real image as formed contains the various information which is to be displayed on the head-up display for ease of the driver. More precisely, the incident light P from the projector 101 falls on the converging lens 102, where the converging lens 102 is installed between the projector 101 and the plurality of reflector modules 103. The converging lens 102 is adapted to converge the incident light P emitted from the projector 101 and thus, forms the real image in proximity of the converging lens 102.

Further, the plurality of reflector modules 103 is adapted to receive the incident light P from the projector 101 through the converging lens 102, where the plurality of reflector modules 103 is installed and tilted with respect to the projector 101. The plurality of reflector modules 103, after receiving the incident light P, is adapted to perform one of transmission of the incident light P to adjacent reflector module from the plurality of reflector modules 103, and reflection of the incident light P at a plurality of angles, respectively. Further, the plurality of reflector modules 103 also transmits the incident light P to the mirror 104, where the mirror 104 reflects the incident light to the diffuser 106. The mirror 104 is installed and tilted with respect to the projector 101, when viewed from top view of the head-up display 100. The mirror 104 is installed adjacent to the plurality of reflector modules 103 and is also adapted to receive the incident light P emitted from the projector 101 through the plurality of reflector modules 103.

Further, the diffuser 106, positioned downwardly with respect to the plurality of the reflector modules 103, receives the incident light P reflected from the plurality of reflector modules 103. The incident light P is reflected from the plurality of reflector modules 103 at the plurality of angles. The incident light P after reflecting from the plurality of reflector modules, at the plurality of angles, is incident on the diffuser 106 along with the incident light P reflected from the mirror 104. Further, the combiner 107 is positioned in front of the housing 105 to receive the incident light from the diffuser 106 at a predetermined angle. The combiner 107 reflects the incident light, received from the diffuser 106 at the predetermined angle, and form a flexible virtual image with respect to the line of sight of the driver. The diffuser 106 diffuses the incident light from an angle to reflect at a range of angles, ensuring some reflected lights are always incident on the combiner 107 at the predetermined angle despite there being a loss of incident lights which are diffused to another angles. Further, the formation of the flexible virtual image with the help of plurality of reflector modules 103 is explained in detail in subsequent paragraphs.

Figure 2A illustrates an exploded view of a plurality of reflector modules 103 of the device, in accordance with an embodiment of the present disclosure. Figure 2B is a schematic view of a control unit 225 and the plurality of reflector modules 103, in accordance with an embodiment of the present invention. Figure 2C is a top view of the plurality of reflector modules 103, in accordance with an embodiment of the present disclosure. Figure 2D is a side view of the plurality of reflector modules 103 with transmitted and incident lights. Figure 2E illustrates formation of a flexible image in the line of sight of the driver.

Referring to Figure 2A-2C, the plurality of reflector modules 103 comprises a light guide member 211, a one-way mirror film member 214, a plurality of light emitting diode 209, a mirror 212, and a converging lens 210.

In one example, the light guide member 211 is installed adjacent to the projector 101. The one-way mirror film member 214 is attached with the light guide member 211 with different attaching member, for example, a transparent adhesive member 213. The one-way mirror film 214 is installed at a front side 219 of the light guide member 211 in a manner that the one-way mirror film member 214 is positioned in front of the projector 101. The one-way mirror film member 214 ensures high degree of reflection and provide a mirror like appearance or reflects the light on a side where brightness of the incident light is higher. The light emitting diode 209, connected with a PCB 208, is disposed at a right side 220 of the light guide member 211. The converging lens 210 is disposed between the light guide member 211 and the light emitting diode 209. The mirror 212 is installed on a left side 217 of the light guide member 211 of the plurality of reflector modules 103.

In one example, the plurality of reflector modules 103 (as shown in Figure 1A) in the head-up display 100 is operated by a control unit 225. The control unit 225 is coupled to the plurality of reflector modules 103 to operate each of the plurality of reflector modules 103 in an active state and an inactive state based on different vehicle parameters 215, for example, a vehicle speed. Thus, based on the vehicle parameters, the control unit 225 decides to activate or deactivate the plurality of reflector modules 103 to provide a plurality of paths for transmitting the incident light P from the projector 101 to the combiner 107, thus changing distance between the real image formed by the projector 101 and the combiner 107. This ensures formation of the flexible virtual image in the head-up display in the line of sight of the driver.

In one example, when the plurality of reflector modules 103 is in the active state, each of the plurality of reflector modules transmits incident light P to the adjacent reflector module from the plurality of reflector modules 103. Similarly, when the plurality of reflector modules 103 is in an inactive state, each of the plurality reflector modules 1031 reflects the incident light P at the plurality of angles. More precisely, based on the inactive state and the active state of the plurality of reflector modules 103, the one-way mirror film member 214, which is a reflecting member in the light guide member 211 of the plurality of reflector modules 103, reflects one of lights rays L received from the light emitting diode 209 and the incident light P received from the projector 101. The one of the lights rays L and the incident light P reflects in a manner that the one-way mirror film member 214 perform one of the transmission of the incident light P to the adjacent reflector module from the plurality of reflector modules and reflection of the incident light P at the plurality of angles, respectively.

In one example, when the plurality of reflector modules 103 is in the active state by the control unit 225, the PCB 208 activates the light emitted diode 209 to emit the light rays L, which is transmitted towards the converging lens 210. The converging lens 210 provides the light rays L emitted from the light emitting diode 209 in a manner that the light rays L perform the total internal reflection. More precisely, the converging lens 210 converge the light rays L at a predetermined angle in a manner that the converged light rays L may enter into the light guide member 211 and perform the total internal reflection.

Further, the light guide member 211 receives light rays L from the light emitting diode 209 and the incident light P from the projector 101. The light rays L from the light emitting diode 209 perform the total internal reflection inside the light guide member 211. The light rays L, due to the total internal reflection, hit different sides of the light guide member 211. The mirror 212 attached with the light guide member 211 ensures the light rays L travel an entire length of the light guide member 211 on same path. Thus, the mirror 212 increases intensity of the light rays L emitted from the light emitting diode 209 in the light guide member 211. Further, the light rays L incidents on a rear side of the one-way mirror film member 214 in the light guide member 211. The light rays L emitted from the light emitting diode 209 has more brightness/intensity than the incident light P emitted from the projector 101. The incident light P is incident over a front side of the one-way mirror film member 214. The one-way mirror film member 214 acts as a reflecting member where the brightness of the incident light is more. Thus, as the incident light P from the projector 101 has lesser brightness than the light rays L emitted from the light emitting diode 209, the one-way mirror film member 214 allows the incident light to transmit to an adjacent reflector module or the mirror 104 of the head-up display 100. Further, the incident light P is finally reflected from the mirror 104 and is incident on the diffuser 106. The combiner 107 receives the incident light at a predetermined angle and reflect to form the flexible virtual image in the head-up display which is in the line of sight of the driver.

In one example, when the plurality of reflector modules is in the inactive state by the control unit 225, the light guide member 211 only receives the incident light P from the projector 101. Thus, the front side of the one-way mirror 214, which is also the front side 219 of the light guide member 211, act as the reflecting member and thus reflects the incident light P from the projector 101 at the plurality of angles. Further, the diffuser 106 receives the incident light P, reflected at the plurality of angles by the plurality of reflector modules 103. The reflected light reflected from the plurality of reflector modules 103 is incident on the diffuser 106. The combiner 107 receives the incident light from the diffuser 106 at the predetermined angle and reflect to form the flexible virtual image in the head-up display. Thus, the flexible virtual image is formed by the combiner 107 by altering distance between the real image formed by the projector 101 and the combiner 107. The distance between the real image and the combiner 107 is altered by providing the plurality of paths taken by the incident light P from the projector 101 to the combiner 107. The plurality of paths is provided by the plurality of reflector modules 103. Therefore, by mirror equation, the change in the distance between the real image formed by the projector 101 and the combiner 107, also, changes position of the virtual image as formed by the combiner 107. Hence, ensures formation of the flexible virtual image in the head-up display in the line of sight of the driver.

Referring Figure 2D-2E, for instance, the projector 101 emits the incident light P which is transmitted to the plurality of reflector modules 103 (103a, 103b), after converging from the converging lens 102. If the reflector module 103a is in the inactive state by the control unit 225, the reflector module 103a reflects the incident light P at a predetermined angle and is further received by the diffuser 106. If the reflector module 103a is in active state by the control unit 225, the reflector module 103a transmits the incident light P to an adjacent reflector module 103b. Similarly, same procedure is followed by the reflector module 103b which is not explained here for sake of brevity. Finally, the incident light P from the plurality of reflector modules 103 transmitted to the mirror 104, when the plurality of the reflector modules 103 is in the active state. Further, the diffuser 106 receives the incident light P reflected at the plurality of angles from the plurality of reflector module 103 along with the incident light P reflected from the mirror 104, where the received light is incident on the diffuser 106. Further, the diffuser 106 transmits the incident light to the combiner 107. The combiner 107 receives the incident light from the diffuser 106 at a predetermined angle, where the predetermined angle is in range where an eye box of the combiner 107 is in the line of sight of the driver. Further, the combiner 107, after receiving the incident light from the diffuser 107, reflects the incident light and forms the flexible virtual image with respect to line of sight of the driver with the help of mirror equation and change in the distance between the real image and the combiner 107.

For instance, the real image is formed by the projector 101 is at point A on the reflected light reflected at the predetermined angle from the reflector module 103a. Therefore, the distance travelled by the reflected light from the point A to the diffuser 106 is X and from the diffuser 106 to the combiner 107 is X’. Thus, the total distance travelled by the light rays to form the virtual image at the combiner 107 is X+X’. Similarly, for the reflector module 103b is Y+Y’. For the mirror 104, the real image, formed by the incident light P transmitted through the plurality of reflector modules 103, is at point C. Therefore, the distance travelled by the reflected light from the point C to the diffuser 106 is Z and from the diffuser 106 to the combiner 107 is Z’. Thus, the total distance travelled by the light rays to form the virtual image at the combiner 107 is Z+Z’. So, by providing different paths to the incident light P to travel from the real image formed by the projector 101 to the combiner 107, the combiner 107 forms the flexible virtual image in a line of sight of the driver. More precisely, physical location of the real image is fixed, and the flexible virtual image is generated by changing distance between the real image formed by the projector 101 and the combiner 107, as shown in Figure 2D and 2E. The change in the distance is by provided by the plurality of reflector modules 103, where the incident light P either transmitted through the plurality of reflector modules 103 or reflected by the plurality of reflector modules 103 at the plurality of angles, which is further incident on the diffuser 106. Thus, by implementing mirror equation, distance of the virtual image with respect to the combiner 107 also changes which appear as a change in a position of the virtual image. This configuration provides the flexible virtual image, where the HUD information is displayed for the driver in line of sight of the driver.

This configuration ensures that the flexible images are being formed with respect to the line of sight of the driver. Further, this also ensures on road safety of the driver driving the vehicle.

As would be gathered, the head-up display 100 with the plurality of reflector modules 103 alters distance between the real image formed by the projector 101 and the combiner 107. This results in formation of the flexible virtual image through a mirror equation. Further, the head-up display 100 as disclosed does not have any moving components, that is, the projector 101 and the combiner 107 are rigidly attached in the conventional set up, ensuring stable and rigid configuration of the head-up display without any major modification in the head-up display. Further, the head-up display 100 also ensures the instantaneous change in position of the virtual image provided by the plurality of reflector modules 103. The instantaneous change in position of the virtual image allow to display virtual images at multiple distance immediately, thus being in line of sight of the driver. The driver does not have to refocus his/her eyes to look at the information provided at head-up display, thus ensuring on road safety of the driver while driving the vehicle. This also enables creation of a 3D virtual image displayed by head-up display. Further, the plurality of reflector modules 103 has simple structure, thus enabling, ease of assembly and manufacturing.

While specific language has been used to describe the present disclosure, any limitations arising on account thereto, are not intended. As would be apparent to a person in the art, various working modifications may be made to the method in order to implement the inventive concept as taught herein. The drawings and the foregoing description give examples of embodiments. Those skilled in the art will appreciate that one or more of the described elements may well be combined into a single functional element. Alternatively, certain elements may be split into multiple functional elements. Elements from one embodiment may be added to another embodiment.

We Claims:

1. A head-up display (100), comprising:
a housing (105) comprising;
a projector (101) adapted to emit incident light (P) to form a real image away from a line of sight of a driver ;
a plurality of reflector modules (103) installed and tilted with respect to the projector (101), wherein the plurality of reflector modules (103) is adapted to receive the incident light (P) from the projector (101);
wherein each of the plurality of reflector modules (103) is adapted to perform one of:
transmission of the incident light (P) to adjacent reflector module from the plurality of reflector modules (103), and
reflection of the incident light (P) at a plurality of angles, respectively; and
a diffuser (106) positioned downwardly with respect to the plurality of reflector modules (103), wherein the incident light P reflected from the plurality of reflector modules (103), at the plurality of angles, is received and incident on the diffuser (106); and
a combiner (107) positioned in front of the housing (106) and adapted to receive the incident light from the diffuser (106), at a predetermined angle;
wherein the combiner (107) reflects the incident light, received from the diffuser (106) at the predetermined angle, and form a flexible virtual image with respect to the line of sight of the driver.

2. The head-up display (100) as claimed in claim 1, wherein each of the plurality reflector modules (103) transmits the incident light (P) to the adjacent reflector module, when the plurality of reflector modules (103) is in an active state.

3. The head-up display (100) as claimed in claim 1, wherein each of the plurality reflector modules (103) reflects the incident light (P) at the different angles, when the plurality of reflector modules (103) is in an inactive state.

4. The head-up display (100) as claimed in claims 1 and 3, comprising a control unit (225) coupled to the plurality of reflector modules (103) to operate each of the plurality of reflector modules (103) in one of the active state and the inactive state.

5. The head-up display (100) as claimed in claim 1, wherein the housing (105) comprises a converging lens (102) installed between the projector (101) and the plurality of reflector modules (103) and adapted to converge the incident light (P) emitted from the projector (101).

6. The head-up display (100) as claimed in claim 1, wherein the housing (105) comprises a mirror (104) installed adjacent to the plurality of reflector modules (103) and adapted to receives the incident light (P) emitted from the projector (101) through the plurality of reflector modules (103).

7. The head-up display (100) as claimed in claim 6, wherein the mirror (104) is installed and tilted with respect to the projector (101), when viewed from top view of the head-up display (100).

8. The head-up display (100) as claimed in claim 1, wherein the plurality of reflector modules (103) comprises:
a light guide member (211) is installed adjacent to the projector (101);
a one-way mirror film member (214) is installed at a front side (219) of the light guide member (211) and positioned in front of the projector (101);
a plurality of light emitting diode (209) is disposed at a right side (220) of the light guide member (211);
wherein the light guide member (211) is adapted to receive one of the light rays (L) from the light emitting diode (209) and the incident light (P) from the projector (101),
wherein the one-way mirror film member (214) is a reflecting member in the light guide member (211) and reflects one of the lights rays (L) received from the light emitting diode (209) and the incident light (P) received from the projector (101) in a manner that the one-way mirror film member (214) perform one of the transmission of the incident light (P) to the adjacent reflector module from the plurality of reflector modules and reflection of the incident light (P) at the plurality of angles, respectively.

9. The head-up display (100) as claimed in claim 8, wherein the plurality of reflector modules (103) comprises a mirror (212) installed on a left side (217) of the light guide member (211) in a manner that the mirror (212) increases intensity of the light rays (L) emitted from the light emitting diode (219) in the light guide member (211).

10. The head-up display (100) as claimed in claim 8, wherein the plurality of reflector modules (103) comprises a converging lens (210) is installed between the light guide member (211) and the light emitting diode (209), wherein the converging lens (210) provides the light rays (L) emitted from the light emitting diode (209) in a manner that the light rays (L) perform a total internal reflection.

Documents

Application Documents

# Name Date
1 202211050935-CLAIMS [29-06-2023(online)].pdf 2023-06-29
1 202211050935-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [06-09-2022(online)].pdf 2022-09-06
2 202211050935-COMPLETE SPECIFICATION [29-06-2023(online)].pdf 2023-06-29
2 202211050935-STATEMENT OF UNDERTAKING (FORM 3) [06-09-2022(online)].pdf 2022-09-06
3 202211050935-REQUEST FOR EARLY PUBLICATION(FORM-9) [06-09-2022(online)].pdf 2022-09-06
3 202211050935-DRAWING [29-06-2023(online)].pdf 2023-06-29
4 202211050935-FORM-9 [06-09-2022(online)].pdf 2022-09-06
4 202211050935-FER_SER_REPLY [29-06-2023(online)].pdf 2023-06-29
5 202211050935-OTHERS [29-06-2023(online)].pdf 2023-06-29
5 202211050935-FORM 1 [06-09-2022(online)].pdf 2022-09-06
6 202211050935-Proof of Right [01-02-2023(online)].pdf 2023-02-01
6 202211050935-DRAWINGS [06-09-2022(online)].pdf 2022-09-06
7 202211050935-FER.pdf 2023-01-02
7 202211050935-DECLARATION OF INVENTORSHIP (FORM 5) [06-09-2022(online)].pdf 2022-09-06
8 202211050935-COMPLETE SPECIFICATION [06-09-2022(online)].pdf 2022-09-06
8 202211050935-FORM-26 [14-11-2022(online)].pdf 2022-11-14
9 202211050935-FORM 18 [30-09-2022(online)].pdf 2022-09-30
10 202211050935-COMPLETE SPECIFICATION [06-09-2022(online)].pdf 2022-09-06
10 202211050935-FORM-26 [14-11-2022(online)].pdf 2022-11-14
11 202211050935-DECLARATION OF INVENTORSHIP (FORM 5) [06-09-2022(online)].pdf 2022-09-06
11 202211050935-FER.pdf 2023-01-02
12 202211050935-DRAWINGS [06-09-2022(online)].pdf 2022-09-06
12 202211050935-Proof of Right [01-02-2023(online)].pdf 2023-02-01
13 202211050935-FORM 1 [06-09-2022(online)].pdf 2022-09-06
13 202211050935-OTHERS [29-06-2023(online)].pdf 2023-06-29
14 202211050935-FER_SER_REPLY [29-06-2023(online)].pdf 2023-06-29
14 202211050935-FORM-9 [06-09-2022(online)].pdf 2022-09-06
15 202211050935-DRAWING [29-06-2023(online)].pdf 2023-06-29
15 202211050935-REQUEST FOR EARLY PUBLICATION(FORM-9) [06-09-2022(online)].pdf 2022-09-06
16 202211050935-COMPLETE SPECIFICATION [29-06-2023(online)].pdf 2023-06-29
16 202211050935-STATEMENT OF UNDERTAKING (FORM 3) [06-09-2022(online)].pdf 2022-09-06
17 202211050935-CLAIMS [29-06-2023(online)].pdf 2023-06-29
17 202211050935-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [06-09-2022(online)].pdf 2022-09-06
18 202211050935-Response to office action [04-07-2025(online)].pdf 2025-07-04
19 202211050935-PatentCertificate19-11-2025.pdf 2025-11-19
20 202211050935-IntimationOfGrant19-11-2025.pdf 2025-11-19

Search Strategy

1 202211050935E_30-12-2022.pdf

ERegister / Renewals