CN220688848U - Optical module, lighting device and vehicle - Google Patents

Abstract

The utility model relates to an optical component comprising: a light source (101) configured to emit light; a light guiding unit (102) configured to receive and guide light emitted by the light source (101) and to emit the light out of a light emitting surface of the light guiding unit (102); and a back plate (103) configured to provide support for the light guiding unit (102), wherein the optical assembly (100) further comprises a transparent front plate (105), the transparent front plate (105) being arranged in front of a main light exit surface of the light guiding unit (102) and configured to transmit light rays from the main light exit surface. The utility model also provides a lighting device and a vehicle.

Description

Optical module, lighting device and vehicle

Technical Field

The utility model relates to the technical field of car lamps, in particular to an optical assembly, a lighting device and a vehicle.

Background

Lighting devices for providing light for illumination and/or optical indication functions are widely used in various fields, for example, in vehicles for securing safe driving by means of lighting devices such as lamps. While various types of lights are often required on vehicles to perform different functions, including automotive headlights, fog lights, tail lights, turn signals, brake lights, side marker lights, standing lights, and the like.

Simple planar or static lighting has been difficult to meet customer requirements.

Disclosure of Invention

It is therefore an object of the present utility model to propose an optical assembly, a lighting device and a vehicle which at least partially solve the above mentioned problems.

The utility model discloses an optical component, comprising: a light source configured to emit light; a light guiding unit configured to receive and guide light emitted from the light source and to emit the light from a light emitting surface of the light guiding unit; and a back plate configured to provide support to the light guide unit, the optical assembly further comprising a transparent front plate disposed in front of the main light exit surface of the light guide unit and configured to transmit light from the main light exit surface.

In some embodiments, the light guide unit includes at least a first portion and a second portion disposed at an angle to each other.

In some embodiments, the angle between adjacent portions of the light guide unit is an obtuse angle.

In some embodiments, a rib is disposed between the at least first and second portions to space the at least first and second portions apart.

In some embodiments, the ribs are integrally formed with the back plate.

In some embodiments, the transparent front plate extends toward the back plate and encloses the sidewalls of the light guide unit.

In some embodiments, the transparent front plate covers at least the first and second portions of the light guide unit and encloses a first sidewall thereof extending in a light propagation direction and a second sidewall at an end opposite to the light source.

In some embodiments, the first and second sidewalls have a coating disposed thereon.

In some embodiments, the transparent front plate is colorless, red, or pale red in color.

According to another aspect of the utility model, there is also provided a lighting device comprising any one of the optical assemblies described above.

According to still another aspect of the present utility model, there is also provided a vehicle including the above-described lighting device.

According to the optical component of the present disclosure, through setting up the coating on the lateral wall of light guide unit, set up transparent front bezel rather than conventional fixed frame in the outside of lateral wall simultaneously, can make optical component 100 have three-dimensional luminous effect, realize the state of floating simultaneously.

Drawings

The above features, technical features, advantages and the manner of attaining them will be further described in greater detail by the description of the preferred embodiments and by reference to the accompanying drawings, in a manner that is clearly understood in the following, wherein,

FIG. 1 shows a perspective view of an optical assembly according to an embodiment of the utility model;

FIG. 2 illustrates a front view of an optical assembly according to an embodiment of the utility model;

FIG. 3 shows a cross-sectional view of the optical assembly of FIG. 2 taken along section A-A;

fig. 4 shows a cross-sectional view of the optical assembly of fig. 2 along section B-B.

Detailed Description

Hereinafter, embodiments of the present utility model are exemplarily described. As will be appreciated by those skilled in the art, the illustrated embodiments can be modified in various different ways without departing from the spirit of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive. In the following, the same reference numerals generally denote elements that are functionally identical or similar.

FIG. 1 shows a perspective view of an optical assembly according to an embodiment of the utility model; FIG. 2 illustrates a front view of an optical assembly according to an embodiment of the utility model; FIG. 3 shows a cross-sectional view of the optical assembly of FIG. 2 taken along section A-A; fig. 4 shows a cross-sectional view of the optical assembly of fig. 2 along section B-B.

The optical assembly 100 according to an embodiment of the present utility model may be used for one or more of the functions of a turn signal lamp, a brake lamp, a side sign lamp, a standing car lamp, a back car lamp, a daytime running lamp, a position lamp, a grille lamp, etc., and the light function is not particularly limited herein.

The lighting device may comprise at least one optical assembly 100 according to the utility model, each optical assembly 100 being adapted to perform a specific light function, and they may be staggered to perform a specific styling, it being understood, of course, that the lighting device may comprise any number of optical assemblies 100, and that these optical assemblies 100 may be arranged arbitrarily according to styling requirements.

As shown in fig. 1-4, the optical assembly 100 includes a light source 101, a light guide unit 102, and a back plate 103. Wherein the light source 101 is mounted on the printed circuit board 200 to emit light toward the light guide unit 102, the light source 101 is, for example, but not limited to, an LED light source, and the light guide unit 102 includes an end face and front and rear surfaces connected by the end face, as shown in fig. 2, wherein the light from the light source 101 is incident from the end face into the inside of the light guide unit 102 and propagates between the front and rear surfaces of the light guide unit 102 toward opposite ends of the end face, during which the light exits from the front surface of the light guide unit 102 in a main light-exiting direction, that is, the front surface serves as a light-exiting surface of the light guide unit 102, thereby achieving a surface light-emitting effect.

According to an embodiment of the present utility model, by making the light source 101 and the light guide unit 102 cooperate to achieve the surface light emitting effect, the cost can be greatly reduced relative to the OLED scheme.

In addition, with respect to the light guide unit 102, some light leaks from the rear surface of the light guide unit 102, and the optical efficiency is reduced. Accordingly, as shown in fig. 2-3, the optical assembly 100 further includes a back plate 103 disposed at a side near the rear surface of the light guide unit 102, i.e., at a side opposite to the front surface, and configured to reflect light leaked from the rear surface toward the front surface. In the embodiment of the utility model, the back plate 103 is disposed on the back side of the light guiding unit 102 to reflect the light leaked from the light guiding unit 102, so as to improve the optical efficiency and the uniformity of the light emitting effect. In some alternative examples, the back plate 103 is disposed on the same side of the light guide unit 102 as the rear surface and is configured to support the light guide unit 102 without providing a reflective function (e.g., without limitation, in the case where light of the light guide unit 102 does not leak out of the rear surface).

In some examples, for example, but not limited to, the back-sheet may select a color and/or material that is reflective, such as a white back-sheet.

In alternative examples, the backsheet 103 may include a reflective layer, in which case the backsheet 103 may be selected to use a non-reflective color and/or material. The reflective layer is disposed between the back plate 103 and the light guide unit 102, and configured to reflect light from the light guide unit 102 toward the light exit surface. The back plate 103 and the reflective layer may be integrally formed, such as, but not limited to, by an injection molding process (over-molding, in-mold injection molding, etc.), or a spray coating process, etc., or both may be separately formed.

In some examples, light from the light source 101 may propagate through total reflection after entering the inside of the light guide unit 102, and in order to allow light to exit from the front surface of the light guide unit 102, the inside of the light guide unit 102 may include scattering particles, and the light from the light source 101 may be scattered by the scattering particles toward different directions, thereby breaking the total reflection condition of the light so that the light exits from the front surface of the light guide unit 102. The light guide unit with the scattering particles has good light diffusion characteristics, and can realize a very uniform light-emitting effect. As a non-limiting example, this type of light guiding unit may be chosen from, for example, polymethyl methacrylate (PMMA), such as the light guides identified as LEDs 8n LD12, LD24, LD48, LD96, or Polycarbonate (PC), such as the light guide identified as EL2245, the color of which may be chosen as desired, for example, but not limited to, colorless, pale red, etc.

In alternative examples, an optical decoupling element may be disposed on the rear surface of the light guide unit 102 to disrupt the total reflection condition of the light, examples of which include, but are not limited to, protrusions, depressions, serrations, dermatoglyphs, stripes, squares, and the like.

In some examples, the light guide unit 102 includes at least a first portion 1021 and a second portion 1022, the at least first portion 1021 and second portion 1022 being disposed at an angle to one another. The lighting effect having stereoscopic vision can be obtained by the first portion 1021 and the second portion 1022 being disposed at an angle to each other. The angle between the at least first portion 1021 and the second portion 1022 may be adjusted according to actual needs, and the present utility model is not limited thereto. It should be noted that, when the light guiding unit 102 includes different portions disposed at an angle, the shape of the back plate 103 should be adjusted accordingly to fit the light guiding unit 102.

In a preferred example, the angle between the adjacent parts of the light guiding unit 102 is an obtuse angle, that is, at least two parts of the light guiding unit 102 are concave light emitting surface, which can obtain higher brightness and improve the efficiency of the light source 101.

In the example shown in fig. 2-4, the light guiding unit 102 is divided into three parts in total, and different parts of the light guiding unit 102 are denoted by 1021, 1022, and 1023 in the drawings, respectively, but those skilled in the art will recognize that the number of parts of the light guiding unit 102 may be selected according to actual needs, such as being divided into two parts, three parts, four parts, or more parts, to obtain different shapes and effects.

Fig. 3 shows a cross-sectional view of the optical assembly of fig. 2 along section A-A. As shown in fig. 3, at least the first portion 1021 and the second portion 1022 of the light guiding unit 102 are separate portions, and each portion corresponds to the independently controllable light source 101. By separately setting different portions of the light guide unit 102, separate control of lighting and extinguishing between the different portions can be achieved, so that different shapes and dynamic lighting effects can be achieved. The turning on and off of the different portions of the light guide unit 102 is achieved by controlling the light sources 101 located on the printed circuit board 200 corresponding thereto, respectively.

In one example, the angle between adjacent portions of the light guide unit 102 is an obtuse angle, as shown in fig. 3, that is, at least two portions of the light guide unit 102 have a concave light-emitting surface shape. In further examples, different portions of the light guiding unit may also be arranged on the same plane, achieving a planar lighting effect. Because the different parts of the light guide unit 102 are separately arranged, separate control of lighting and extinguishing between the different parts can be realized, and thus, different shapes and dynamic lighting effects can be realized.

Taking the example that the light guiding unit 102 shown in fig. 3 includes three parts as an example, it is possible to select to light only one part of the light guiding unit 102, or two parts thereof, or all parts thereof at the same time, or to light the different parts in a certain order, etc., and the present utility model is not limited thereto.

Preferably, as shown in fig. 3, a rib 104 is provided between the at least first portion 1021 and the second portion 1022 to space the at least first portion 1021 and the second portion 1022 apart. The ribs 104 are preferably formed of an opaque material to avoid light crosstalk before the different portions of the light guide unit 100.

In one example, the ribs 104 between different portions of the light guide unit 102 extend along the entire length of the light guide unit 102. Such an arrangement may prevent adjacent portions of the light guide unit 102 from generating light in series, affecting the final effect.

In one example, the length of the rib 104 exceeds the light entrance end of the light guiding unit 102, so as to avoid the light from the light source 101 interfering with the adjacent portion of the light guiding unit 102.

In one example, ribs 104 are integrally formed with back plate 103 to simplify the manufacturing process and save costs.

In one example, the height of the ribs 104 is preferably adapted to the thickness of the light guiding unit 102 to avoid increasing the thickness of the optical assembly 100 while avoiding cross-light. As shown in fig. 4, the ribs 104 preferably have a width that decreases with increasing distance from the back plate 103 to accommodate the concave shape formed between the different portions of the light guide unit 100, and also facilitate processing.

In one embodiment, as shown in fig. 2-3, the optical assembly 100 further comprises a transparent front plate 105, the transparent front plate 105 being disposed on the front side of the light guiding unit 102, i.e. the same side as the front surface, and configured to transmit light rays from the front surface. The transparent front plate 105 may function to protect the light guide unit 102, which can prevent the light guide unit 102 from being damaged or scratched. The color of the transparent front plate may be selected according to the need, such as red, pink, colorless, etc., and the present utility model is not particularly limited.

Preferably, a pattern may be provided on the light emitting surface of the transparent front plate 105 to enhance the lighting effect of the optical assembly 100. The pattern may be configured according to actual needs, such as triangle, hexagon, automobile logo, or other suitable shapes and patterns, and the present utility model is not limited in particular. The pattern on the transparent front plate 105 may be formed when the transparent front plate 105 is formed by injection molding or the like, or may be applied to the transparent front plate 105 after the transparent front plate 105 is formed.

In some examples, as shown in fig. 3-4, the transparent front plate 105 extends toward the back plate 103 and encloses the sidewalls of the light guide unit 102. In this case, the side walls of the light guide unit 102 are visible, and the light guide unit 102 may be made to have its actual stereoscopic structure visually.

In a specific example, as shown in fig. 3, the transparent front plate 105 covers at least the first portion 1021 and the second portion 1022 of the light guide unit 102, and encloses a first sidewall 1024 extending along the light propagation direction and a second sidewall 1025 at an end opposite to the light source. The first side wall 1024 and the second side wall 1025 together constitute an outer side wall of the light guiding unit 102. Such an arrangement may make the other surfaces of the light guiding unit 102, except for the light entrance end and the back surface opposite to the main light exit surface, visually visible. Of course, when the light guide unit 102 includes three or more parts as in fig. 3, the transparent front plate 105 covers the three or more parts of the light guide unit so that the outer sidewall of the light guide unit is visible.

In one specific example, the first side wall 1024 and the second side wall 1025 have a coating disposed thereon. The light can be emitted from the outer side wall of the light guiding unit 102 by applying the coating, namely, the outer side wall of the light guiding unit 102 can also realize the light emitting effect, and on the basis, the side wall of the light guiding unit 102 can also have a good light emitting effect due to the fact that the transparent front plate 105 can transmit the light, so that the whole light guiding unit 102 has a 3D three-dimensional effect and is in a floating state visually.

In one example, the coating is white to obtain a desired visual effect, and in other examples, the coating may have another color, the utility model is not particularly limited.

In some examples, as shown in fig. 2, the optical assembly 100 further includes a diffusion layer disposed between the light guide unit 102 and the transparent front plate 105, and light from the light guide unit 102 is incident to the diffusion layer and uniformly diffused by the diffusion layer, whereby uniformity of the lighting effect may be further improved. The scattering layer may be made of any suitable light transmissive scattering material, such as, but not limited to, polymethyl methacrylate (PMMA), polycarbonate (PC), and the like. The diffusion layer may be integrally formed with the light guide unit 102 and/or the transparent front plate 105 or separately formed. Preferably, the scattering angle of the scattering layer is greater than 50 degrees, and the transmittance is greater than 85% to ensure uniformity of the lighting effect.

In a further example, an optical microstructure is provided on the side of the transparent front plate 105 close to the light guiding unit 102 to achieve the scattering effect achieved by the scattering layer, thereby achieving scattering of light from the light guiding unit 102 without providing a scattering layer. Similar to the case of the diffusion layer, the diffusion angle of the optical microstructure disposed at the side of the transparent front plate 105 close to the light guide unit 102 is preferably greater than 50 degrees, and the transmittance is preferably greater than 85% to ensure uniformity of the lighting effect. The scattering microstructures on the transparent front plate 105 may be formed together when the transparent front plate 105 is formed by a process such as injection molding. Such an arrangement may save costs and simplify the assembly process.

According to the optical component of the present disclosure, through setting up the coating on the lateral wall of light guide unit, set up transparent front bezel rather than conventional fixed frame in the outside of lateral wall simultaneously, can make optical component 100 have three-dimensional luminous effect, realize the state of floating simultaneously.

According to an embodiment of the utility model, there is also included a lighting device including any one of the optical assemblies described above.

According to an embodiment of the utility model, there is also included a vehicle including the lighting device as described above.

The present utility model is not limited to the above-described structure, and other various modifications may be employed. While the utility model has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that other embodiments can be devised which do not depart from the scope of the utility model as disclosed herein. Accordingly, the scope of the utility model should be limited only by the attached claims.

Claims (9)

1. An optical assembly (100), comprising:

a light source (101) configured to emit light;

a light guiding unit (102) configured to receive and guide light rays emitted by the light source (101) and to emit the light rays from a main light exit surface of the light guiding unit (102); and

-a back plate (103) configured to provide support for the light guiding unit (102);

the optical assembly (100) further comprises a transparent front plate (105), the transparent front plate (105) being arranged in front of the main light exit surface of the light guiding unit (102) and being configured to transmit light rays from the main light exit surface;

the light guiding unit (102) comprises at least a first portion (1021) and a second portion (1022), the at least first portion (1021) and the second portion (1022) being arranged at an angle to each other;

the transparent front plate (105) extends towards the back plate (103) and encloses the back plate

A side wall of the light guiding unit (102).

2. The optical assembly (100) of claim 1, wherein the angle between adjacent portions of the light guide unit (102) is an obtuse angle.

3. The optical assembly (100) of claim 2, wherein a rib (104) is provided between the at least first portion (1021) and the second portion (1022) to space the at least first portion (1021) and the second portion (1022).

4. An optical assembly (100) according to claim 3, wherein the ribs (104) are integrally formed with the back plate (103).

5. The optical assembly (100) of claim 1, wherein the transparent front plate (105) covers at least a first portion (1021) and a second portion (1022) of the light guiding unit (102) and encloses a first side wall (1024) thereof extending in a light propagation direction and a second side wall (1025) of an end opposite to the light source.

6. The optical assembly (100) of claim 5, wherein the first sidewall (1024) and the second sidewall (1025) have a coating disposed thereon.

7. The optical assembly (100) according to claim 5 or 6, wherein the transparent front plate (105) is colorless, red or reddish in color.

8. A lighting device, characterized by comprising an optical assembly (100) as claimed in any one of claims 1 to 7.

9. A vehicle comprising an optical assembly according to any one of claims 1 to 7 or a lighting device according to claim 8.