Lens structure for realizing function multiplexing, optical system, and vehicle lamp

Abstract

A lens structure for realizing function multiplexing, an optical system, and a vehicle lamp. The lens structure comprises a light incident part (1) and a light exist part (2); light emitted by light sources (4) is irradiated to the light exit part (2) via the light incident part (1); the light exit part (2) comprises a plurality of light exit units (21); and each light exit unit (21) at least comprises a first structural surface (211), a second structural surface (212), a third structural surface (213), a fourth structural surface (214), a fifth structural surface (215), and a sixth structural surface (216), wherein the first structural surface (211), the third structural surface (213), and the fifth structural surface (215) share a second focus (F2), and the second structural surface (212), the fourth structural surface (214), and the sixth structural surface (216) share a first focus (F1).

Description

Lens structure, optical system and vehicle light for realizing functional reuse Technical Field

[0001] The present invention relates to the field of vehicle lighting, and in particular to a lens structure for realizing functional reuse, and also to an optical system and a vehicle lamp. Background Art

[0002] As the structure of current headlights becomes more and more compact and the degree of integration of headlights becomes higher and higher, the functions and colors of existing headlights are also increasing. Usually white light is used for daytime running, yellow light is used for turning, and red light is used for braking. Different colors of light require different light sources. Multiple light sources share a concentrator or reflector or other light-entry end collimating structure. However, since a light-entry end collimating structure has only one focus, and multiple light sources cannot all be at the focus, this leads to a decrease in the efficiency of the overall optical system, thereby affecting the lighting effect of the headlights and problems such as heat, power consumption, and cost. Moreover, each light source is equipped with a concentrator or other light-entry end collimating structure, which causes structural congestion and waste of space.

[0003] Moreover, in traditional projects, known solutions easily lead to LED defocusing and low efficiency due to the fact that multiple light sources correspond to the focus of the collimating structure at the light input end. This increases the cost of LED raw materials and also makes the circuit design complicated and the heat risk increased.

[0004] In view of this, it is necessary to develop a lens structure for realizing functional reuse to solve the above problems.

[0005] Summary of the Invention

[0006] In response to the above technical problems, the present invention provides, on one hand, a lens structure and an optical system for realizing functional reuse, which can ensure the lighting uniformity of the vehicle lights when the functions are reused.

[0007] In order to solve the above technical problems, the first aspect of the present invention provides a lens structure for realizing functional multiplexing, including a light input part and a light output part, the light emitted by the light source is irradiated to the light output part through the light input part, and the light output part includes a plurality of light output units, each of the light output units includes at least a first structural surface, a second structural surface, a third structural surface, a fourth structural surface, a fifth structural surface and a sixth structural surface, and the first structural surface, the third structural surface and the fifth structural surface have a second focus F2, the second structural surface, the fourth structural surface and the sixth structural surface have a first focus F1, so that the light emitted at the second focus F2 can be transmitted through the first structural surface, the third structural surface and the fifth structural surface, and the second structural surface, the fourth structural surface and the sixth structural surface are suitable for transmitting the light emitted at the first focus F1.

[0008] Preferably, the first structural surface and the second structural surface are both free-form surfaces, and the first structural surface and the second structural surface are spliced ​​to form a first angle α1 or a second angle α2, and the first angle α1 is greater than the second angle α2.

[0009] Further preferably, each of the light emitting units further includes a third structural surface, a fourth structural surface, a fifth structural surface and a sixth structural surface, and the light passing through the first structural surface, the third structural surface and the fifth structural surface has a second focus F2, and the light passing through the second structural surface, the fourth structural surface and the sixth structural surface has a first focus F1.

[0010] Preferably, adjacent structural surfaces of the first structural surface, the second structural surface, the third structural surface, the fourth structural surface, the fifth structural surface and the sixth structural surface are suitable for splicing to form the first included angle α1 and / or the second included angle α2.

[0011] Preferably, the material of each of the light emitting units may be transparent PMMA material, PC material or glass.

[0012] A second aspect of the present invention provides an optical system, which adopts the lens structure for realizing functional multiplexing described in the first aspect of the present invention.

[0013] Preferably, the light emitting portion further includes a thick-walled structure, which is suitable for receiving light emitted through multiple light emitting units, and multiple arched light emitting portions are provided on the structural surface of the thick-walled structure to be able to diffuse the emitted light through the arched light emitting portions.

[0014] Further preferably, each of the light emitting units corresponds to at least one independent light source, and the independent light source is suitable for generating light of at least two different colors.

[0015] A third aspect of the present invention provides a vehicle lamp, which adopts the optical system described in the second aspect of the present invention.

[0016] Through the above technical solution, the lens structure for realizing functional reuse of the present invention is provided with a plurality of light emitting units at the light emitting portion of the lens structure, and each light emitting unit includes a first structural surface and a second structural surface, such as the first structural surface and the second structural surface can correspond to the first focus F1 and the second focus F2 respectively, wherein the light emitted from the first focus F1 is suitable for being emitted through the first structural surface, and the light emitted from the second focus F2 is suitable for being emitted through the second structural surface, and at the same time, the light emitted from the focal points corresponding to the first structural surface and the second structural surface will only be emitted from the corresponding first structural surface and the second structural surface, and will not interfere with each other, thereby ensuring the uniformity of light emission during functional reuse of the vehicle lights, and multiple light rays can be reused, and each light ray is not defocused, which makes the efficiency higher, can effectively save power consumption and heat, and can reduce costs.

[0017] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic structural diagram of a lens structure for achieving functional reuse according to a specific embodiment of the present invention;

[0019] FIG2 is a front view of a lens structure for realizing functional multiplexing according to a specific embodiment of the present invention;

[0020] FIG3 is a rear view of a lens structure for realizing functional multiplexing according to a specific embodiment of the present invention;

[0021] FIG4 is a side plan view of a lens structure for achieving functional multiplexing according to a specific embodiment of the present invention;

[0022] FIG5 is a schematic diagram of a light output unit of a lens structure for realizing functional multiplexing according to a specific embodiment of the present invention;

[0023] FIG6 is a schematic diagram of a combination of multiple structural surfaces of a lens structure for achieving functional reuse according to a specific embodiment of the present invention;

[0024] FIG7 is a schematic diagram of another combination of multiple structural surfaces of a lens structure for achieving functional reuse according to a specific embodiment of the present invention;

[0025] FIG8 is a schematic diagram of a three-dimensional structure of a lens structure for achieving functional reuse according to a specific embodiment of the present invention;

[0026] FIG9 is a light path diagram of a light output unit of a lens structure for realizing functional multiplexing according to a specific embodiment of the present invention;

[0027] FIG10 is a schematic diagram of the three-dimensional structure of an optical system according to a specific embodiment of the present invention;

[0028] FIG11 is a side view of an optical system according to a specific embodiment of the present invention;

[0029] FIG12 is a light path diagram of an optical system according to a specific embodiment of the present invention.

[0030] Explanation of the accompanying reference numerals: 1. light incident portion; 2. light emitting portion; 21. light emitting unit; 211. first structural surface; 212. second structural surface; 213. third structural surface; 214. fourth structural surface; 215. fifth structural surface; 216. sixth structural surface; 3. thick-walled component structure; 31. arched light emitting portion; 4. light source. DETAILED DESCRIPTION

[0031] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "installed," and "connected" should be understood broadly. For example, the term "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] 1 to 3 , a lens structure for realizing functional multiplexing according to a specific embodiment of the present invention includes a light input portion 1 and a light output portion 2, wherein light emitted by a light source 4 is irradiated to the light output portion 2 via the light input portion 1, and the light output portion 2 includes a plurality of light output units 21, each light output unit 21 includes at least a first structural surface 211 and a second structural surface 212, and the first structural surface 211 and the second structural surface 212 both have independent focal points, so as to be able to transmit different light emitted by the light source 4 located at each independent focal point respectively through the first structural surface 211 and the second structural surface 212, that is, the light emitted from each focal point F1, F2 will only be emitted through the structural surface set on the light output unit 21, and there will be no mutual interference between the emitted light rays, thereby ensuring the uniformity of the light output effect.

[0034] 4 , specifically, it is assumed that the light at the first focus F1 is only emitted through the first structural surface 211 , and the light at the second focus F2 is only emitted through the second structural surface 212 .

[0035] Referring to Figures 5 to 7 , the first structured surface 211 and the second structured surface 212 are both free-form surfaces, which are optically curved surfaces with varying curvatures at various locations and lacking rotational or translational symmetry. The first structured surface 211 and the second structured surface 212 are suitable for shearing and splicing to form a first angle α1 or a second angle α2, with the first angle α1 being greater than the second angle α2.

[0036] Specifically, referring to Figure 6, the first structural surface 211 can be sheared to form a first structural portion 211-1 and a second structural portion 211-2, and the second structural surface 212 can be sheared to form a third structural portion 212-1 and a fourth structural portion 212-2, wherein the first structural portion 211-1 and the third structural portion 212-1 are spliced ​​to form a combined light-emitting form.

[0037] More specifically, referring to FIG. 7 , the second structure portion 211 - 2 and the fourth structure portion 212 - 2 are spliced ​​together to form another combined light output form.

[0038] 8 to 9 , the lens structure is described below in conjunction with a specific embodiment of the present application. The light-emitting unit 21 of the lens structure of the present application includes not only a first structural surface 211 and a second structural surface 212, but also a third structural surface 213, a fourth structural surface 214, a fifth structural surface 215, and a sixth structural surface 216. The first structural surface 211, the third structural surface 213, and the fifth structural surface 215 have a first focal point F1, the second structural surface 212, the fourth structural surface 214, and the sixth structural surface 216 have a second focal point F2, and the first structural surface 211, the second structural surface 212, the third structural surface 213, the fourth structural surface 214, the fifth structural surface 215, and the sixth structural surface 216 can all adopt the two combined light-emitting forms shown by the first structural surface 211 and the second structural surface 212.

[0039] Specifically, the first structural surface 211, the second structural surface 212, the third structural surface 213, the fourth structural surface 214, the fifth structural surface 215 and the sixth structural surface 216 are connected by splicing. It should be noted that the forward projection width of each surface is 1.5 mm.

[0040] As shown in Figures 10 to 12, the light entrance portion 1 is configured as vertical stripes, each vertical stripe has a forward projection width of 1.0 mm, and a pattern arch height of 0.14 mm. The light entrance portion 1 shown in Figures 1 to 9 can also be configured as a flat surface, or as vertical stripes or other structural shapes according to practical needs.

[0041] In addition, in this embodiment, the lens assembly is provided with six structural surfaces, but in actual application it is not limited to the setting of six structural surfaces, and needs to be adjusted and designed according to the actual structural space and appearance requirements.

[0042] More specifically, without being limited to the first structural surface 211 and the second structural surface 212, the splicing structure between the third structural surface 213, the fourth structural surface 214, the fifth structural surface 215 and the sixth structural surface 216 in this embodiment can adopt the splicing structure as shown in Figure 6 to achieve the final light-emitting effect, that is, the angle formed after the first structural surface 211, the second structural surface 212, the third structural surface 213, the fourth structural surface 214, the fifth structural surface 215 and the sixth structural surface 216 are spliced ​​in sequence is the first angle α1.

[0043] In addition, a splicing structure as shown in FIG7 can also be used to achieve the light emitting effect, that is, the angle formed by the first structural surface 211, the second structural surface 212, the third structural surface 213, the fourth structural surface 214, the fifth structural surface 215 and the sixth structural surface 216 after being spliced ​​in sequence is the second angle α2.

[0044] Of course, a splicing structure as shown in combination with Figure 6 and Figure 7 can also be used to achieve the final light emission effect, that is, the angle formed by the first structural surface 211, the second structural surface 212, the third structural surface 213, the fourth structural surface 214, the fifth structural surface 215 and the sixth structural surface 216 after shearing and splicing is a combination of the first angle α1 and the second angle α2. Through the above-mentioned splicing between multiple structural surfaces, the light rays emitted from the first focus F1 and the second focus F2 are independent of each other, and the emitted light rays will only be emitted from the corresponding structural surfaces to avoid mutual interference between the emitted light rays, thereby ensuring the uniformity of light emission.

[0045] More specifically, each light emitting unit 21 can be made of transparent PMMA material, PC material or glass.

[0046] An optical system according to a specific embodiment of the present invention adopts the lens structure for realizing functional multiplexing described in the present invention, and therefore also has the above advantages.

[0047] Referring to Figures 10 to 12 , the optical system further includes a thick-walled member structure 3, which is disposed on the path of light emitted from the light emitting unit 21. Therefore, the thick-walled member structure 3 can receive the light emitted from the light emitting unit 21. Furthermore, a plurality of arched light emitting portions 31 are provided on the structural surface of the thick-walled member structure 3. These arched light emitting portions 31 can diffuse the light and evenly emit it during emission, thereby increasing the light emission range.

[0048] Therefore, since no other optical elements are arranged between the light emitting unit 21 and the thick-walled structure 3, when the light enters through the light input end of the light emitting unit 21, it is collimated and calibrated by the light emitting unit 21 and then emitted into the air between the light emitting unit 21 and the thick-walled structure 3, and then refracted by the thick-walled structure 3 and emitted. When emitted, it is affected by the arched light emitting portion 31 arranged on the light emitting structural surface of the thick-walled structure 3, and the light is diffused and emitted evenly, so as to ensure the uniformity of the light while improving the diffusion range of the light.

[0049] The height of the thick-walled member 3 is 2.3 mm, and the arched light-emitting portion 31 can be configured as a corn-shaped structure. The size of the arched light-emitting portion 31 is 2 × 2 mm. In this technical solution, the distance between the light-emitting unit 21 and the thick-walled member is 6 mm. It should be noted that the above-mentioned size range can be adjusted and designed according to the structural space and appearance requirements, and is not limited to the above-mentioned size design.

[0050] Specifically, an independent light source 4 is provided at the first focus F1 and the second focus F2. The outgoing light emitted by the independent light source 4 is suitable for being emitted from the first focus F1. The outgoing light emitted at the first focus F1 will only be irradiated onto the first structural surface 211 and emitted after being corrected by the first structural surface 211. The outgoing light emitted from the second focus F2 will only be emitted after being corrected by the second structural surface 212, and the light emitted from the first focus F1 and the second focus F2 do not interfere with each other, thereby ensuring the uniformity of the outgoing light.

[0051] More specifically, each light emitting unit 21 corresponds to at least one independent light source 4, and the independent light source 4 can be set as a dual-core LED light source 4, which can emit two different colors of light, and the two light-emitting points of the dual-core LED light source 4 correspond to the two focal points of the lens structure. Of course, a single-core light source 4 of one color can be set at the first focus F1, and a single-core light source 4 of another color can be set at the second focus F2. For example, a white light source can be set at the first focus F1, and a yellow light source can be set at the second focus F2. Or it can also correspond to a single-core LED light source, which can also improve the uniformity of light output. The dual-core LED light source 4 can be adapted to a dual-focus lens, and the lighting uniformity of the lens structure is good. Each light source 4 is not out of focus, and the luminous efficiency is high. At the same time, it can save energy and heat, improve space utilization, and reduce costs.

[0052] A vehicle lamp according to a specific embodiment of the present invention adopts the optical system described in any of the above embodiments of the present invention, and therefore also has the above advantages.

[0053] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," or "an implementation" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0054] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention may be subjected to various simple modifications, including combining the specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A lens structure for realizing functional multiplexing, characterized in that: The invention comprises a light input portion (1) and a light output portion (2), wherein light emitted by a light source (4) is irradiated to the light output portion (2) via the light input portion (1), and the light output portion (2) comprises a plurality of light output units (21), each of the light output units (21) comprises a first structural surface (211), a second structural surface (212), a third structural surface (213), a fourth structural surface (214), a fifth structural surface (215) and a sixth structural surface (216), and the first structural surface (211), the third structural surface (213) and the fifth structural surface (215) are The structural surface (215) has a second focus F2, and the second structural surface (212), the fourth structural surface (214) and the sixth structural surface (216) have a first focus F1, so that the light emitted at the second focus F2 can be transmitted through the first structural surface (211), the third structural surface (213) and the fifth structural surface (215), and the second structural surface (212), the fourth structural surface (214) and the sixth structural surface (216) are suitable for transmitting the light emitted at the first focus F1.

2. The lens structure for realizing functional multiplexing according to claim 1, characterized in that: The first structural surface (211) and the second structural surface (212) are both free-form surfaces, and the first structural surface (211) and the second structural surface (212) are suitable for cutting and splicing to form a first angle α1 or a second angle α2, and the first angle α1 is greater than the second angle α2.

3. The lens structure for realizing functional multiplexing according to claim 2, characterized in that: Adjacent structural surfaces of the first structural surface (211), the second structural surface (212), the third structural surface (213), the fourth structural surface (214), the fifth structural surface (215) and the sixth structural surface (216) are suitable for shearing and splicing to form the first angle α1 and / or the second angle α2.

4. The lens structure for realizing functional multiplexing according to any one of claims 1 to 3, characterized in that: The material of each of the light emitting units (21) can be transparent PMMA material, PC material or glass.

5. An optical system, characterized in that: A lens structure for realizing functional multiplexing as described in any one of claims 1 to 4 is adopted.

6. The optical system according to claim 5, characterized in that It also comprises a thick-walled member structure (3), wherein the thick-walled member structure (3) is suitable for receiving light emitted via the plurality of light emitting units (21), and a plurality of arched light emitting portions (31) are provided on a structural surface of the thick-walled member structure (3) so as to diffuse the emitted light via the arched light emitting portions (31).

7. The optical system according to claim 6, characterized in that Each of the light emitting units (21) corresponds to at least one independent light source (4), and the independent light source (4) is suitable for generating light of at least two different colors.

8. A vehicle lamp, characterized in that: An optical system as claimed in any one of claims 5 to 7 is adopted.

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