Technical Field
The present disclosure relates automotive lamp of vehicle. More particularly, the
present disclosure relates to the effectively use of un-used lens area in Automotive
lamp of the vehicle.
Background
The automotive lamp normally includes three optical elements: (a) the light source,
(b) a reflector having a reflecting surface, and (c) a lens having a refracting surface.
The reflector and lens are configured to give direction to the reflected and refracted
rays. Light coming out from the lamp is, in general, of two types. One is refracted
only, and second is reflected as well as refracted. Majority of light output is of
second type. The output light is controlled in two ways: First reflection from the
reflector, and second refraction through the lens. When a light is emitted from the
light source, its direction is reflected from the reflector and then this reflected light
is dispersed by the refraction through the lens.
Figure 1 illustrates lamp assembly (100) of the existing lamp known in the prior art
wherein the reflection of light from a reflector as illustrated in the figure by arrows
(P) passes through a bezel opening (101) to a lens (L). As illustrated in figure 1, light
from the light source is reflected from a reflecting surface. The light reflected is
parallel to the axis of the reflector and is obstructed due to the presence of surface
of the bezel (102) as shown by the arrows (0) in figure 1. Due to presence of flat
surface, there is loss of intensity and illumination of the light from the lamp
assembly.
Also , the shape and structure of optics in the lens is such that there is presence of
flat surfaces on the lens. The surfaces are unused area of the lens as it does not
contribute in photometry of light passing through it. The light passing through the
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surfaces moves in straight line, parallel to each other. Hence, light output does not
meet requirement.
Henceforth, in these circumstances there is a need to develop a lamp assembly which
addresses to the above-mentioned problem and results in better illumination of light
from the lamp assembly which increases the intensity of light from the lamp
assembly.
Summary
The present disclosure provides an automobile lamp which is compact and provide
better illumination. In the automobile lamp of the present disclosure, the lens
comprises a plurality of convex region and a plurality of concave regions. The
concave regions diverge the light passing through it and thus enhances the
performance of the lamp in terms of illumination. Further, in the present disclosure,
the automotive lamp comprises a reflector which is configured so that the light
reflected from its reflecting surface passes through an opening of a bezel disposed
between the lens and the reflector and thus allows to use smaller size of lens.
Brief description of figures
Figure 1 illustrates the dispersion of light through lens of existing prior lamp
assembly.
Figure 2 illustrates the exploded view the lamp assembly in accordance with the
embodiment of the present disclosure.
Figure 3 illustrates a front view of a lens according to an embodiment of the present
disclosure
Figure 4 illustrate sectional view taken along plane A-A of the lens shown in Figure
3.
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Figure 5 shows dispersion of light through lens of automotive lamp and reflector
according to an embodiment of the present disclosure.
Description of present disclosure
While the invention is subject to various modifications and alternative forms,
specific embodiment thereof has been shown by way of example in the figures and
will be described below. It should be understood, however that it is not intended to
limit the invention to the forms disclosed, but on the contrary, the invention is to
cover all modifications, equivalents, and alternative falling within the scope of the
invention.
It is to be noted that a person skilled in the art can be motivated from the present
invention and can perform various modifications. However, such modifications
should be construed within the scope of the invention.
Accordingly, the drawings are showing only those specific details that are pertinent
to understanding the embodiments of the present invention so as not to obscure the
disclosure with details that will be readily apparent to those of ordinary skill in the
art having benefit of the description herein.
The terms "comprises", "comprising", or any other variations thereof, are intended
to cover a non-exclusive inclusion, such that an assembly, setup, system,
device that comprises a list of components does not include only those
components but may include other components not expressly listed or inherent
to such system or device or setup. In other words, one or more elements in the
system or apparatus or device proceeded by "comprises a" does not, without more
constraints, preclude the existence of other elements or additional elements in the
assembly or system or apparatus. The following paragraphs explain present
invention. The invention in respect of the same may be deduced accordingly.
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Accordingly, it is an aim of the present disclosure to provide a lens structure which
comes over at least one of the problem of the existing lens structure.
Accordingly, the present disclosure provides a lamp assembly for an automobile
comprising: a light source ; a reflector having a reflecting surface a bezel having a
bezel opening disposed between the reflector and a lens the lens located in front of
the reflector wherein the lens comprises a convex and concave portion and wherein
the light reflected from the reflecting surface passes through the bezel opening to the
lens thereby providing illumination.
In another embodiment of the present disclosure the reflector comprises; a top
region; a middle region; a bottom region and is configured to reflect the light from
its reflecting surface so that the light passes through the bezel opening and reaches
the lens.
In yet another embodiment of the present disclosure the middle region is axial
aligned from the bezel opening.
In a further embodiment of the present disclosure the top and bottom regions are
axial from the bezel opening.
In a further embodiment of the present disclosure the concave region is formed
between every two consecutive convex regions.
In an alternate embodiment of the present disclosure the plurality of concave region
provides a water drop effect while glowing or illuminating.
In one more embodiment of the present disclosure the plurality of concave and
convex region act as an optical lens for photometric requirement.
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The Inventor(s) have developed an automobile lamp which is compact and provide
better illumination. In the automobile lamp of the present disclosure, a plurality of
concave structure is formed between two convex structure. The concave structure
diverges the light passing through it and thus enhances the performance of the lamp
in terms of illumination. Further, in the present disclosure, the automotive lamp
comprises a reflector which is configured so that the light reflected from its
reflecting surface passes through an opening of a bezel disposed between the lens
and the reflector. This allows to use smaller size of lens.
Figure 2 illustrates an exploded view of a lamp assembly illustrating the lamp
assembly (1) for an automobile comprising a light source (2), a reflector (3) having
a reflecting surface, a bezel (5) having a bezel opening (6) disposed between the
reflector (3) and a lens (4). The bezel is located in front of the reflector. In an
embodiment of the present disclosure the light source is mounted at or near the focal
point of the reflector surface. In an embodiment of the present disclosure the lamp
assembly the reflector is of parabolic shape.
Figures 3-5 illustrate a lens of the present disclosure. The lens is placed in between
the bezel having a rectangular shape. As shown in Figures 3-5, the lens comprises
plurality of convex regions (7) and concave regions (8). In an embodiment of the
present disclosure, a concave region (8) is formed between every two consecutive
convex regions (7) in horizontal direction. As shown in Figure 5, the convex regions
(7) converge incident light whereas concave regions (8) diverge the incident light.
Due to presence of concave regions (8), unutilized flat surface area is utilized which
contributes in photometric performance. The plurality of concave regions (8)
provides a water-drop effect while glowing or illuminating. The term 'water drop
effect' herein refers to a visual appearance uniformly dispersed water droplets over
lens thus provides aesthetic effect.
Referring to Figures 3-5, light enters the lens through surface 1 and leaves through
surface 2 after refraction. Therefore, if the area between two convex regions (7)
remains plain then there will be no dispersion of light passing through these plain
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areas and total light output may not meet the requirements. Therefore, in order to
counter the loss of light due to flat areas, concave optical regions (8) are formed out
of these flat areas. These concave regions (8) enhance light output by diverging
incident light rays parallel to the convergent light rays.
In an embodiment, the automotive lamp of the present disclosure comprises a bezel
(5) having an opening (6), disposed between the lens (4) and the reflector (3). The
bezel (5) is used in the lamp (1) so that a compact size lens can be used. However,
due to the presence of bezel the light reflected from the reflector may be obstructed
by the bezel. Such obstruction may result into reduction of light intensity of the
lamp. To address this problem, the present disclosure provides a reflector which is
configured so that all the reflected light travels through the bezel opening and
reaches the lens.
Referring to Figure 5, the reflector comprises a top region (AB) , a middle region
(BC) and a bottom region (CD). The middle region(BC) is axial aligned from the
opening of the bezel (5). The top (AB) and bottom regions (CD) are axially offset
from the opening of the bezel (5). The reflector (3) is configured in such a way that
the reflected light from both top (AB), middle(BC) and bottom (CD) region passes
through the bezel opening (6) and reaches to the lens (4), which enhances the
intensity and illumination of the light. As depicted in Figure 5, dotted lines show the
reflection of light from the top and bottom region which travels through the bezel
opening whereas the continuous lines show the reflection of light from the middle
region.
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Equivalents:
The embodiments herein and the various features and advantageous details thereof
are explained with reference to the non-limiting embodiments in the description.
Descriptions of well-known components and processing techniques are omitted so
as to not unnecessarily obscure the embodiments herein. The examples used herein
are intended merely to facilitate an understanding of ways in which the embodiments
herein may be practiced and to further enable those of skill in the art to practice the
embodiments herein. Accordingly, the examples should not be construed as limiting
the scope of the embodiments herein.
The foregoing description of the specific embodiments will so fully reveal the
general nature of the embodiments herein that others can, by applying current
knowledge, readily modify and/or adapt for various applications such specific
embodiments without departing from the generic concept, and, therefore, such
adaptations and modifications should and are intended to be comprehended within
the meaning and range of equivalents of the disclosed embodiments. It is to be
understood that the phraseology or terminology employed herein is for the purpose
of description and not of limitation. Therefore, while the embodiments herein have
been described in terms of preferred embodiments, those skilled in the art will
recognize that the embodiments herein can be practiced with modification within the
spirit and scope of the embodiments as described herein.
Throughout this specification the word "comprise", or variations such as
"comprises" or "comprising", will be understood to imply the inclusion of a stated
element, integer or step, or group of elements, integers or steps, but not the exclusion
of any other element, integer or step, or group of elements, integers or steps.
The use of the expression "at least" or "at least one" suggests the use of one or more
elements or ingredients or quantities, as the use may be in the embodiment of the
disclosure to achieve one or more of the desired objects or results.
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Any discussion of documents, acts, materials, devices, articles and the like that has
been included in this specification is solely for the purpose of providing a context
for the disclosure. It is not to be taken as an admission that any or all of these matters
form a part of the prior art base or were common general knowledge in the field
relevant to the disclosure as it existed anywhere before the priority date of this
application.
The numerical values mentioned for the various physical parameters, dimensions or
quantities are only approximations and it is envisaged that the values higher/lower
than the numerical values assigned to the parameters, dimensions or quantities fall
within the scope of the disclosure, unless there is a statement in the specification
specific to the contrary.
While considerable emphasis has been placed herein on the particular features of
this disclosure, it will be appreciated that various modifications can be made, and
that many changes can be made in the preferred embodiments without departing
from the principles of the disclosure. These and other modifications in the nature of
the disclosure or the preferred embodiments will be apparent to those skilled in the
art from the disclosure herein, whereby it is to be distinctly understood that the
foregoing descriptive matter is to be interpreted merely as illustrative of the
disclosure and not as a limitation.
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LIST OF REFERENCE NUMERALS
Existing Prior Lamp Assembly 100
Bezel Opening in Existing Prior Lamp
Assembly
101
Bezel in Existing Prior Lamp
Assembly
102
Reflection of Light from a Reflector P
Obstruction of light due to presence of
bezel surface
0
Lamp Assembly 1
Light Source 2
Reflector 3
Lens 4
Bezel 5
Bezel Opening 6
Convex Region of Lens 7
Concave Region of Lens 8
Top region of Reflector AB
Middle region of Reflector BC
Bottom region of Reflector CD
Reflection of Light from Top and
Bottom portion of Reflector

We Claim
I. A lamp assembly (1) for an automobile comprising:
• a light source (2)
• a reflector (3) having a reflecting surface
• a bezel (5) having a bezel opening (6) disposed between the
reflector (3) and a lens (4)
• the lens (4) located in front of the reflector (3) wherein the lens (4)
comprises a convex (7) and concave (8) portion and
wherein the light reflected from the reflecting surface passes
through the bezel opening (6) to the lens (4) thereby providing
illumination.
2. The lamp assembly (1) as claimed in claim 1 wherein, the reflector(3)
comprises
a top region (AB);
a middle region(BC);
a bottom region(CD)
and is configured to reflect the light from its reflecting surface so that the
light passes through the bezel opening(6) and reaches the lens(4).
3. The lamp assembly as claimed in claim 1 wherein, the middle region(BC)
is axial aligned from the bezel opening (6).
4. The lamp assembly as claimed in claim 1 wherein, the top(AB) and
bottom(CD) regions are axial from the bezel opening (6).
5. The lamp assembly as claimed in claim 1 wherein, the concave region (8) is
formed between every two consecutive convex regions(7) .
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6. The lamp assembly as claimed in claim 1 wherein, the plurality of concave
region (8) provides a water drop effect while glowing or illuminating.
7. The lamp assembly as claimed in claim 1 wherein, plurality of concave (8)
and convex region (7) act as an optical lens for photometric requirement.