EP4170229A1

EP4170229A1 - Vehicle lamp optical component, vehicle lamp module, and vehicle

Info

Publication number: EP4170229A1
Application number: EP21842368.9A
Authority: EP
Inventors: Shikun DONG; Zhengnan LIU; Shiqun HE; Keng WANG; Yang Liu; Luqing FAN; Wenhui SANG
Original assignee: HASCO Vision Technology Co Ltd
Current assignee: HASCO Vision Technology Co Ltd
Priority date: 2020-07-13
Filing date: 2021-06-04
Publication date: 2023-04-26
Also published as: EP4170229A4; WO2022012211A1; CN112781001A

Abstract

Provided are a vehicle lamp optical component, vehicle lamp module, and vehicle; the vehicle lamp optical component comprises a light-transmitting part (2) and a light-emitting part (3); he light-transmitting part (2) comprises a light incident surface (25), a first reflective surface (21) and a second reflective surface (22); the first reflective surface (21) and the second reflective surface (22) are arranged opposite to each other, such that the light received by the light incident surface (25) is reflected in sequence by the first reflective surface (21) and the second reflective surface (22) and then directed toward the light-emitting part (3). The vehicle lamp optical component has a higher degree of miniaturization and integration.

Description

Cross-Reference to Related Applications

The present application claims priority to Chinese Patent Application No. 202010669827.7, filed on July 13, 2020 , the entire contents of which are incorporated herein by reference.

Field of the Invention

The present invention relates to a vehicle lighting device, and in particular to a vehicle lamp optical component. In addition, the present invention further relates to a vehicle lamp module including the vehicle lamp optical component, and a vehicle.

Background of the Invention

In recent years, vehicle lamps and vehicle lamp modules assembled in the vehicle lamps have developed rapidly. From the earlier halogen lamp to the later hernia lamp and then to existing LED and laser light source, the vehicle lamps become more and more intelligent and more differentiated in shape. In various vehicle lamp light sources, the LED light source has been paid more and more attention by mobile manufacturers gradually due to the advantages of excellent performance and low cost. With the development of the LED light source, the light distribution structure is gradually developing.
Lighting modules with the LED light source commonly used in vehicle lamps in the prior art generally include a light source, a reflecting component, a light-shielding plate, a lens and a mounting bracket. Light emitted by the light source is reflected by the reflecting component and then directed to the light-shielding plate, and is intercepted by the light-shielding plate and then projected by the lens to form the required quasi-parallel light lighting light shape. There are many kinds of parts in the lighting module in the prior art. On one hand, the precision of an optical system will be affected by the manufacturing error of the parts and the assembling error between the parts, so that the lighting light shape will be affected. On the other hand, the light-shielding plate, the bracket and other parts increase the cost of the lighting module, and enhance the positioning and mounting difficulties of the lighting module. Furthermore, in the lighting system, the forward and backward propagation distance of the light is long, and the distance between the reflecting component and the lens is long, so the length of the lighting module is increased, which is in prominent contradiction with the trend of more compact vehicle lamps in the future.
In view of this, it is necessary to design a novel vehicle lamp optical component.

Summary of the Invention

The technical problem to be solved by a first aspect of the present invention is to provide a vehicle lamp optical component. The vehicle lamp optical component has a higher degree of miniaturization and integration.
The technical problem to be solved by a second aspect of the present invention is to provide a vehicle lamp module. The vehicle lamp module has a higher degree of miniaturization and integration
The technical problem to be solved by a third aspect of the present invention is to provide a vehicle. The vehicle lamp optical component of the vehicle has a higher degree of miniaturization and integration.
To solve the above technical problem, the first aspect of the present invention provides a vehicle lamp optical component, including a light-transmitting part and a light-emitting part, where the light-transmitting part includes a light incident surface, a first reflective surface and a second reflective surface; the first reflective surface and the second reflective surface are arranged opposite to each other, such that the light received by the light incident surface is reflected in sequence by the first reflective surface and the second reflective surface and then directed toward the light-emitting part.
Preferably, the first reflective surface can backward or upward reflect the light received by the incident surface to the second reflective surface, and a rear edge of the first reflective surface forms a cut-off line structure; or the first reflective surface can downward reflect the light received by the incident surface to the second reflective surface, and a rear edge of the second reflective surface forms a cut-off line structure.
Further preferably, the first reflective surface can backward or upward reflect the light received by the incident surface to the second reflective surface, a rear edge of the first reflective surface forms a cut-off line structure, and a light-converging point of an optical system composed of the second reflective surface and the light-emitting part is located at the cut-off line structure; or the first reflective surface can downward reflect the light received by the incident surface to the second reflective surface, a rear edge of the second reflective surface forms a cut-off line structure, and a light-converging point of an optical system composed of the first reflective surface, the second reflective surface and the light-emitting part is located at the cut-off line structure.
Preferably, the light-transmitting part is provided with a protruded structure, and a rear surface of the protruded structure intersects with the light-transmitting part to form a cut-off line structure.
Further preferably, a light-converging point of an optical system composed of the first reflective surface, the second reflective surface and the light-emitting part is located at the cut-off line structure.
Further preferably, the cut-off line structure is a curve with two sides bending forward and having an inflection point; or the cut-off line structure is a smooth curve with two sides bending forward.
Preferably, the vehicle lamp optical component further includes a light-converging part arranged behind the light incident surface, where the light-converging part is a light-converging cup structure; or the light-converging part is a curved surface structure or cone structure protruding backward.
As a specific structural form, the light-converging part is the light-converging cup structure, an outer contour surface of the light-converging part is a curved surface with a caliber gradually increasing from one end away from the light-transmitting part to one end close to the light-transmitting part; an inner concave cavity is formed at one end, away from the light-transmitting part, of the light-converging part; the inner concave cavity includes a front light incident surface and a side light incident surface; the front incident surface is a curved surface protruding toward one side away from the light-transmitting part; and the side light incident surface is a curved surface with a caliber gradually decreasing from one end away from the light-transmitting part to one end close to the light-transmitting part.
Preferably, the vehicle lamp optical component is an integrally formed solid optical conductor.
Specifically, the first reflective surface and the second reflective surface have coated reflective layers.
More specifically, the first reflective surface and the second reflective surface are planes.
Preferably, the light-emitting part includes a light emergent surface, and the light emergent surface is a curved surface protruding forward.
The second aspect of the present invention further provides a vehicle lamp module, including a light source and the vehicle lamp optical component according to any one of the technical solutions of the first aspect, where the light source is arranged behind the light incident surface.
The third aspect of the present invention further provides a vehicle, including the vehicle lamp module according to the technical solutions of the second aspect.
By the vehicle lamp optical component in the above basic technical solutions, the following technical effects can be achieved:

1. A light shape can be formed independently, other optical components are not required, the degree of integration is high, a connection structure between the optical components is omitted, the cost is reduced, the manufacturing error and mounting error caused by numerous and miscellaneous parts are avoided, and the accuracy and stability of the light shape are ensured.
2. The forward and backward propagation distance of the light is shortened by the first reflective surface and the second reflective surface, so that the space occupied volume of the optical component is smaller, the space utilization efficiency of the vehicle lamp is greatly improved, and the degree of miniaturization of the vehicle lamp is high.
3. The structure is simple, so that the structural complexity of the vehicle lamp module is reduced, the production process flow is simplified, the production rhythm is accelerated, the production cost is saved, and the assembling error is avoided, thereby ensuring a stable emergent light shape.

Other advantages of the present invention and the technical effects of the preferred embodiments will be further described in the following specific embodiments.

Brief Description of the Drawings

FIG. 1 is a structural schematic diagram of a first embodiment of a vehicle lamp optical component according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a first structural schematic diagram of a second embodiment of the vehicle lamp optical component according to the present invention;
FIG. 4 is a second structural schematic diagram of a second embodiment of the vehicle lamp optical component according to the present invention;
FIG. 5 is a light path schematic diagram of a second embodiment of the vehicle lamp optical component according to the present invention;
FIG. 6 is a first structural schematic diagram of a third embodiment of the vehicle lamp optical component according to the present invention;
FIG. 7 is a second structural schematic diagram of a third embodiment of the vehicle lamp optical component according to the present invention;
FIG. 8 is a third structural schematic diagram of a third embodiment of the vehicle lamp optical component according to the present invention;
FIG. 9 is a light path schematic diagram of a third embodiment of the vehicle lamp optical component according to the present invention;
FIG. 10 is a left view of FIG. 7;
FIG. 11 is a bottom view of FIG. 7;
FIG. 12 is a structural schematic diagram of a fourth embodiment of the vehicle lamp optical component according to the present invention;
FIG. 13 is a first structural schematic diagram of a fifth embodiment of the vehicle lamp optical component according to the present invention;
FIG. 14 is a second structural schematic diagram of a fifth embodiment of the vehicle lamp optical component according to the present invention;
FIG. 15 is a light path schematic diagram of a fifth embodiment of the vehicle lamp optical component according to the present invention;
FIG. 16 is a first structural schematic diagram of a sixth embodiment of the vehicle lamp optical component according to the present invention;
FIG. 17 is a second structural schematic diagram of a sixth embodiment of the vehicle lamp optical component according to the present invention;
FIG. 18 is a light path schematic diagram of a sixth embodiment of the vehicle lamp optical component according to the present invention;
FIG. 19 is a structural schematic diagram and a light path schematic diagram of a seventh embodiment of the vehicle lamp optical component according to the present invention;
FIG. 20 is a structural schematic diagram and a light path schematic diagram of an eighth embodiment of the vehicle lamp optical component according to the present invention; and
FIG. 21 is a mounting schematic diagram of a light source and a light-converging part according to the present invention.

Description of reference numerals

1 light-converging part	2 light-transmitting part
21 first reflective surface	22 second reflective surface
23 protruded structure	24a cut-off line structure
24b cut-off line structure	24c cut-off line structure
25 light incident surface
3 light-emitting part	31 light emergent surface
4 light source

Detailed Description of the Embodiments

The specific embodiments of the present invention are described below 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, but the protection scope of the present invention is not limited to the following specific embodiments.
It should be understood that as shown in FIG. 1, when a vehicle lamp optical component is normally mounted in a vehicle lamp, along a light emergent direction, "front" refers to an end where a light-emitting part 3 is located, "rear" refers to an end where a light incident surface 25 is located, "left" refers to a left side along the light emergent direction, "right" refers to a right side along the light emergent direction, "upper" refers to an upper side along the light emergent direction, and "lower" refers to a lower side along the light emergent direction. In the actual mounting situation, terms of orientation should be explained according to the actual mounting state and based on the vehicle lamp optical component, and the terms are based on the orientation or position relation shown in the drawings, are intended to facilitate the description of the present invention and simplify the description, but not intended to indicate or imply that the referred device or component must have a specific orientation and be constructed and operated in a specific orientation, which thus cannot be understood as limiting the present invention. It should be noted that the light emergent direction is a direction of emergent light of the vehicle lamp optical component. According to the definition of GB 4599-2007--Motor Vehicle Headlamps Equipped With Filament Lamps: a light-shade cut-off line is a dividing line between light and shade which change significantly through visual sensation when a light beam is projected to a light distribution screen; and a low beam cut-off line refers to an upper boundary of a low beam shape of the vehicle lamp.
Besides, the terms "first" and "second" are used only for description and cannot be understood as an indication or implication of relative importance or an implicit indication of the number of technical features. Therefore, the features limited by "first" and "second" may explicitly or implicitly include one or more of the features.
In the description of the present invention, it should also be noted that unless otherwise specified and limited, the terms "mounting" and "connecting" should be understood in a broad sense. For example, they may be fixed connection, detachable connection or integrated connection, or may be direct connection, or may be indirect connection through an intermediate medium, or may be internal communication between two components or an interactive relation between two components. A person of ordinary skill in the art may understand specific meanings of the foregoing terms in the present invention based on a specific situation.
It should also be noted that for the requirement of vehicle lamp modelling, at least one internal lens may be arranged between the vehicle lamp optical component and an external lens. The internal lens may be an ordinary plastic piece with an equal wall thickness only for presenting the required shape, or may be a light distribution plastic piece with a light distribution function on the back side.
Referring to FIG. 1 and FIG. 2, a first aspect of the present invention provides a vehicle lamp optical component, including a light-transmitting part 2 and a light-emitting part 3 that are arranged in sequence, where the light-transmitting part 2 includes a light incident surface 25, a first reflective surface 21 and a second reflective surface 22. The light incident surface 25 may be a plane or a curved surface protruding backward, light is emitted from the light incident surface 25 to the light-transmitting part 2, and the first reflective surface 21 and the second reflective surface 22 are arranged opposite to each other, so that the light is reflected by the first reflective surface 21 and the second reflective surface 22 in sequence and then directed to the light-emitting part 3. Optionally, the first reflective surface 21 and the second reflective surface 22 are arranged transversely, the light received by the light incident surface 25 is emitted to the first reflective surface 21, the first reflective surface 21 can backward reflect the light to the second reflective surface 22, and the light is forward reflected by the second reflective surface 22 to the light-emitting part 3 and then is projected by the light-emitting part 3 to form an emergent light shape; or the first reflective surface 21 and the second reflective surface 22 are arranged vertically, the light received by the light incident surface 25 is emitted to the first reflective surface 21, the light can be upward or downward reflected by the first reflective surface 21 to the second reflective surface 22 and then reflected to the light-emitting part 3, and the light is projected by the light-emitting part 3 to form an emergent light shape.
Lighting modules in the prior art generally include a light source, a reflecting component, a light-shielding plate, a lens and a mounting bracket. Light emitted by the light source is reflected by the reflecting component and then directed to the light-shielding plate, and is intercepted by the light-shielding plate and then projected by the lens to form the required quasi-parallel light lighting light shape. Obviously, there are many kinds of parts in the lighting module with this structure, the positioning precision is low, the forward and backward propagation distance of the light is longer, and the distance between the reflecting component and the lens is long, so that the lighting module is long and has low arrangement flexibility in the limited space of the vehicle lamp.
The vehicle lamp optical component provided by the present invention cleverly utilizes the first reflective surface 21 and the second reflective surface 22 to change the conduction direction of light in the vehicle lamp optical component, so that the light received by the light incident surface 25 is reflected by the first reflective surface 21 and the second reflective surface 22 in sequence and then directed to the light-emitting part 3, and under the condition of the unchanged optical path, the forward and backward propagation distance of the light is shortened, and the occupied space of the vehicle lamp optical component in the forward and backward direction of the vehicle lamp is reduced.
According to the vehicle lamp optical component in the basic technical solutions of the present invention, a light shape can be formed independently, a light-shielding plate, a lens and other optical components are not required, the degree of integration is high, the assembling error between the optical components in the assembling process can be avoided, and the assembling precision can be improved, so that the optical precision can be improved; furthermore, the forward and backward propagation distance of the light can be shortened by the first reflective surface 21 and the second reflective surface 22, so that the vehicle lamp optical component has a smaller space occupied volume, a more compact structure and high degree of miniaturization, is arranged more flexibly in the vehicle lamp, and can meet the requirements of users for personalized and scientific vehicle lamp modelling; in addition, the vehicle lamp optical component has a simple structure, reduces the assembling and dimming difficulties of the vehicle lamp module, simplifies the production process flow, accelerates the production rhythm, saves the production cost and avoids the assembling error, thereby ensuring a stable emergent light shape.
The vehicle lamp optical component provided by the present invention can be used to realize various lighting light shapes, and is applied to various lighting vehicle lamps, such as a high beam, a low beam, a corner lamp or a foglight. Taking the case where the vehicle lamp optical component is applied to the low beam as an example, a lighting light shape with a low beam light-shade cut-off line can be formed. As a structure of the vehicle lamp optical component for the low beam, referring to FIG. 3 to FIG 5, the first reflective surface 21 backward reflects light to the second reflective surface 22, and a cut-off line structure 24a is formed at the intersection of the lower surface of the light-transmitting part 2 and the first reflective surface 21, that is, at the rear edge of the first reflective surface 21; or referring to FIG. 13 to FIG. 15, the first reflective surface 21 upward reflects the light to the second reflective surface 22, and a cut-off line structure 24a is formed at the intersection of the lower surface of the light-transmitting part 2 and the first reflective surface 21, that is, at the rear edge of the first reflective surface 21; or referring to FIG. 19, the first reflective surface 21 downward reflects the light to the second reflective surface 22, and a cut-off line structure 24c is formed at the intersection of the lower surface of the light-transmitting part 2 and the second reflective surface 22, that is, at the rear edge of the second reflective surface 22. The incident light from the light incident surface 25 is reflected by the first reflective surface 21 and the second reflective surface 22 in sequence and then directed to the light-emitting part 3, and the light is projected by the light-emitting part 3 to form a lighting light shape. More specifically, in the embodiments shown in FIG. 5 and FIG. 15, light directed to the cut-off line structure 24a is reflected by the second reflective surface 22 and then directed to the light-emitting part 3, and is projected by the light-emitting part 3 to form a light-shade cut-off line of the lighting light shape. The light-shade cut-off line is located at the upper boundary of the lighting light shape, the light directed to the first reflective surface 21 is reflected by the second reflective surface 22 and then directed to the light-emitting part 3, and the light is projected by the light-emitting part 3 to form the lighting light shape; and in the embodiment shown in FIG. 19, the light directed to the cut-off line structure 24c is reflected by the first reflective surface 21 and the second reflective surface 22 in sequence and then directed to the light-emitting part 3, the light is projected by the light-emitting part 3 to form the light-shade cut-off line of the lighting light shape, the light-shade cut-off line is located at the upper boundary of the lighting light shape, the light directed to the first reflective surface 21 is reflected by the second reflective surface 22 and then directed to the light-emitting part 3, and the light is projected by the light-emitting part 3 to form the lighting light shape. The cut-off line structure 24a and the cut-off line structure 24c may be broken lines or curved lines with an inflection point for forming a low beam light-shade cut-off line with an inflection point, and the lighting light shape may be a complete low beam shape or a main low beam shape projected to a low beam center area; or the cut-off line structure 24a and the cut-off line structure 24c may be straight lines or arcs for forming a horizontal low beam light-shade cut-off line, and the lighting light shape may be an auxiliary low beam shape projected to a low beam widening area. Preferably, referring to FIG. 5 and FIG. 15, when the first reflective surface 21 backward or upward reflects the light received by the light incident surface 25 to the second reflective surface 22, and the cut-off line structure 24a is formed at the rear edge of the first reflective surface 21, a light-conversing point of an optical system composed of the second reflective surface 22 and the light-emitting part 3 is located at or near the cut-off line structure 24a. The light-conversing point of the optical system refers to a point where parallel light is emitted to the second reflective surface 22 from the front of the light-emitting part 3, reflected by the second reflective surface 22 on or near the cut-off line structure 24a and then converged on or near the cut-off line structure 24a. More vividly, the second reflective surface 22 is a plane, the parallel light is incident from the front of the light-emitting part 3, refracted by the light-emitting part 3 and converged to form a focal point, and the light-converging point and the focal point are symmetrical about the second reflective surface 22. Therefore, according to the reversibility of light, the light path where the light emitted from the light-converging point is reflected by the second reflective surface 22 to the light-emitting part 3 and then is emitted is the same as the light path where the light emitted from the focal point is directly emitted through the light-emitting part 3. Compared with the latter, the former shortens the forward and backward propagation distance of the light. Referring to FIG. 19, when the first reflective surface 21 can downward reflect the light received by the light incident surface 25 to the second reflective surface 22, and the cut-off line structure 24c is formed at the rear edge of the second reflective surface 22, a light-converging point of an optical system composed of the first reflective surface 21, the second reflective surface 22 and the light-emitting part 3 is located at the cut-off line structure 24c. The light-conversing point of the optical system refers to a point where parallel light is emitted to the second reflective surface 22 from the front of the light-emitting part 3, reflected by the second reflective surface 22 and the first reflective surface 21 in sequence on or near the cut-off line structure 24c and then converged on or near the cut-off line structure 24c. More vividly, the first reflective surface 21 and the second reflective surface 22 are planes, the parallel light incident from the front of the light-emitting part 3 is refracted by the light-emitting part 3 and converged to form a focal point, and a symmetry point of the focal point symmetrical about the second reflective surface 22 and the light-converging point are symmetrical about the first reflective surface 21. Therefore, according to the reversibility of light, the light path where the light emitted from the light-converging point is reflected by the first reflective surface 21 and the second reflective surface 22 in sequence to the light-emitting part 3 and then is emitted is the same as the light path where the light emitted from the focal point is directly emitted through the light-emitting part 3. Compared with the latter, the former shortens the forward and backward propagation distance of the light.
As another structure of a vehicle lamp optical component for the low beam, referring to FIG. 9, FIG. 18 and FIG. 20, the light-transmitting part 2 is provided with a protruded structure 23, and a rear surface of the protruded structure 23 intersects with the light-transmitting part 2 to form a cut-off line structure 24b. Referring to FIG. 9, light incident from the light incident surface 25 is reflected by the first reflective surface 21 and the second reflective surface 22 in sequence and then directed to the light-emitting part 3, and the light is projected by the light-emitting part 3 to form a lighting light shape. The light emitted to the cut-off line structure 24b is reflected by the first reflective surface 21 and the second reflective surface 22 in sequence and then directed to the light-emitting part 3, and the light is projected by the light-emitting part 3 to form a light-shade cut-off line of a lighting light shape, and the light-shade cut-off line is an upper boundary of the lighting light shape. Similarly, the cut-off line structure 24b may be a broken line or curved line with an inflection point for forming a low beam light-shade cut-off line with an inflection point, and the lighting light shape may be a complete low beam shape or a main low beam shape projected to a low beam center area; or the cut-off line structure 24b may be a straight line or arc for forming a horizontal low beam light-shade cut-off line, and the lighting light shape may be an auxiliary low beam shape projected to a low beam widening area.
Preferably, a light-converging point of an optical system composed of the first reflective surface 21, the second reflective surface 22 and the light-emitting part 3 is located on or near the cut-off line structure 24b. The light-conversing point of the optical system refers to a point where parallel light is emitted to the second reflective surface 22 from the front of the light-emitting part 3 and then reflected by the second reflective surface 22 and the first reflective surface 21 in sequence on or near the cut-off line structure 24b, and the parallel light is converged on or near the cut-off line structure 24b. More vividly, referring to FIG. 18, the first reflective surface 21 and the second reflective surface 22 are planes, the parallel light incident from the front of the light-emitting part 3 is refracted by the light-emitting part 3 and converged to form a focal point, and a symmetry point of the focal point symmetrical about the second reflective surface 22 and the light-converging point are symmetrical about the first reflective surface 21. Therefore, according to the reversibility of light, the light path where the light emitted from the light-converging point is reflected by the first reflective surface 21 and the second reflective surface 22 in sequence to the light-emitting part 3 and then is emitted is the same as the light path where the light emitted from the focal point is directly emitted through the light-emitting part 3. Compared with the latter, the former shortens the forward and backward propagation distance of the light.
Optionally, referring to FIG. 6 to FIG. 10 and FIG. 16 to FIG. 20, the cut-off line structure 24b is a curved line with both sides bending forward and having an inflection point and may form a low beam light-shade cut-off line with an inflection point so as to be applied to a low beam or a main low beam module in the low beam; or referring to FIG. 11 and FIG. 12, the cut-off line structure 24b is a smooth curved line with two sides bending forward and may form a horizontal light-shade cut-off line without an inflection point so as to be applied to an auxiliary low beam module in the low beam. It may be understood that the two sides of the cut-off line structure 24b bend forward to form a curved line protruding backward, so that the cut-off line of the emergent light shape can be imaged more clearly and sharply, or may be a straight line. The vehicle lamp optical component is designed flexibly, is suitable for various vehicle lamps with different design spaces by adding a protruded structure 23 and adjusting the positions of the cut-off line structures 24a, 24b and 24c according to the design spaces in different vehicle lamps, and may perform adjustment for left and right driving seats and has wide applicability. Or referring to FIG. 1, the vehicle lamp optical component may not be provided with the protruded structure 23 and the cut-off line structures 24a, 24b and 24c so as to be applied to high beams, corner lamps, foglights and other vehicle lamps, or may be provided with the protruded structure 23 and the cut-off line structures 24a, 24b and 24c to form a high beam shape with a light-shade cut-off lower boundary.
To improve the light efficiency, the vehicle lamp optical component provided by the present invention further includes a light-converging part 1 arranged behind the light incident surface 25. Optionally, the light-converging part 1 is a light-converging cup structure, or the light-converging part 1 is a curved surface structure or cone structure protruding backward. Certainly, the light-converging part 1 provided by the present invention is not limited to the above structure, and may have other structures, which are all used to converge and collimate light; therefore, some other light-converging structures all belong to the protection scope of the present invention.
As a specific structural form, the light-converging part 1 is a light-converging cup structure, an outer contour surface of the light-converging part 1 is a curved surface with a caliber gradually increasing from one end away from the light-transmitting part 2 to one end close to the light-transmitting part 2; an inner concave cavity is formed at one end, away from the light-transmitting part 2, of the light-converging part 1; the inner concave cavity includes a front light incident surface and a side light incident surface; the front incident surface is a curved surface protruding toward one side away from the light-transmitting part 2; and the side light incident surface is a curved surface with a caliber gradually decreasing from one end away from the light-transmitting part 2 to one end close to the light-transmitting part 2. Referring to FIG. 21, the opening of the inner concave cavity faces the light source 4 to receive light emitted by the light source 4; the light-converging part 1 may refract part of light emitted by the light source 4 to the front through a front light incident surface of the inner concave cavity; the side light incident surface of the inner concave cavity may refract other light emitted by the light source 4, and the refracted light is reflected to the front through an outer contour surface; therefore, all light beams emitted by the light source 4 can be basically converged and collimated, and the light beam utilization rate of the light source 4 can be increased. Furthermore, divergent light can form a light beam with a small angle after being refracted or reflected by the light-converging part 1, so that the light emitted by the light source 4 can be completely or mostly incident on the first reflective surface 21 to achieve high light efficiency.
Preferably, the vehicle lamp optical component is an integrally formed solid optical conductor. Since light is transmitted in the same medium all the time, the light will not be basically attenuated. The vehicle lamp optical component has high optical efficiency. Specifically, the vehicle lamp optical component may be integrally formed by glass, PC, PMMA or silica gel, so that the production process flow is simplified, the production cost is saved, the number of parts can be reduced, the assembled vehicle lamp has a more compact structure, the assembling error between various optical components in the assembly process can be avoided, and the assembling precision can be improved, thereby improving optical precision and ensuring a stable emergent light shape.
Preferably, the first reflective surface 21 and the second reflective surface 22 have coated reflective layers. The coated reflective layer may be an aluminum-plated layer, a chromium-plated layer or a silver-plated layer. The coated reflective layer can increase the reflectivity of each reflective surface so as to increase the light utilization rate.
More preferably, to further save the cost, the coated reflective layer is arranged only at a local area, for reflecting light, on the second reflective surface 22. Referring to FIG. 12, the uppermost part and the lowermost part of the second reflective surface 22 do not play a role in reflecting light. Therefore, the two parts may not be provided with the coated reflective layers and the coated reflective layer is only provided at the middle position of the second reflective surface 22.
Preferably, the first reflective surface 21 and the second reflective surface 22 are planes.
Typically, referring to FIG. 1, the light-emitting part 3 includes a light emergent surface 31, and the light emergent surface 31 is a curved surface protruding forward so as to play a role in converging and collimating light. Or other optical surfaces with converging and collimating functions may be adopted.
The vehicle lamp module provided by the present invention includes the vehicle lamp optical component in the technical solution of the first aspect, so the vehicle lamp module at least has all the beneficial effects brought by the technical solutions of the vehicle lamp optical component, which will not be elaborated herein.
The vehicle provided by the present invention may include the vehicle lamp module in the above embodiment, so the vehicle has all the beneficial effects brought by the technical solutions of the embodiment of the vehicle lamp module.
The preferred embodiments of the present invention are described above in detail with reference to the drawings; however, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple variations may be made to the present invention, and belong to the protection scope of the present invention.
In addition, it should be noted that various specific technical features described in the specific embodiments may be combined in any appropriate ways without contradiction. To avoid unnecessary repetition, various possible combinations are not described separately in the present invention.
In addition, various different embodiments of the present application may be combined arbitrarily, which should be regarded as the contents disclosed by the present invention, as long as they do not violate the idea of the present invention.

Claims

A vehicle lamp optical component, comprising a light-transmitting part (2) and a light-emitting part (3), wherein the light-transmitting part (2) comprises a light incident surface (25), a first reflective surface (21) and a second reflective surface (22); the first reflective surface (21) and the second reflective surface (22) are arranged opposite to each other, such that the light received by the light incident surface (25) is reflected in sequence by the first reflective surface (21) and the second reflective surface (22) and then directed toward the light-emitting part (3).
The vehicle lamp optical component according to claim 1, wherein the first reflective surface (21) is capable of backward or upward reflecting the light received by the light incident surface (25) to the second reflective surface (22), and a rear edge of the first reflective surface (21) forms a cut-off line structure (24a); or
the first reflective surface (21) is capable of downward reflecting the light received by the light incident surface (25) to the second reflective surface (22), and a rear edge of the second reflective surface (22) forms a cut-off line structure (24c).
The vehicle lamp optical component according to claim 2, wherein the first reflective surface (21) is capable of backward or upward reflecting the light received by the light incident surface (25) to the second reflective surface (22), a rear edge of the first reflective surface (21) forms a cut-off line structure (24a), and a light-converging point of an optical system composed of the second reflective surface (22) and the light-emitting part (3) is located at the cut-off line structure (24a); or
the first reflective surface (21) is capable of downward reflecting the light received by the light incident surface (25) to the second reflective surface (22), a rear edge of the second reflective surface (22) forms a cut-off line structure (24c), and a light-converging point of an optical system composed of the first reflective surface (21), the second reflective surface (22) and the light-emitting part (3) is located at the cut-off line structure (24c).
The vehicle lamp optical component according to claim 1, wherein the light-transmitting part (2) is provided with a protruded structure (23), and a rear surface of the protruded structure (23) intersects with the light-transmitting part (2) to form a cut-off line structure (24b).
The vehicle lamp optical component according to claim 4, wherein a light-converging point of an optical system composed of the first reflective surface (21), the second reflective surface (22) and the light-emitting part (3) is located at the cut-off line structure (24b).
The vehicle lamp optical component according to claim 4, wherein the cut-off line structure (24b) is a curve with two sides bending forward and having an inflection point; or the cut-off line structure (24b) is a smooth curve with two sides bending forward.
The vehicle lamp optical component according to any one of claims 1 to 6, further comprising a light-converging part (1) arranged behind the light incident surface (25), wherein the light-converging part (1) is a light-converging cup structure; or the light-converging part (1) is a curved surface structure or cone structure protruding backward.
The vehicle lamp optical component according to claim 7, wherein the light-converging part (1) is the light-converging cup structure, an outer contour surface of the light-converging part (1) is a curved surface with a caliber gradually increasing from one end away from the light-transmitting part (2) to one end close to the light-transmitting part (2); an inner concave cavity is formed at one end, away from the light-transmitting part (2), of the light-converging part (1); the inner concave cavity comprises a front light incident surface and a side light incident surface; the front incident surface is a curved surface protruding toward one side away from the light-transmitting part (2); and the side light incident surface is a curved surface with a caliber gradually decreasing from one end away from the light-transmitting part (2) to one end close to the light-transmitting part (2).
The vehicle lamp optical component according to any one of claims 1 to 6, wherein the vehicle lamp optical component is an integrally formed solid optical conductor.
The vehicle lamp optical component according to any one of claims 1 to 6, wherein the first reflective surface (21) and the second reflective surface (22) have coated reflective layers.
The vehicle lamp optical component according to any one of claims 1 to 6, wherein the first reflective surface (21) and the second reflective surface (22) are planes.
The vehicle lamp optical component according to any one of claims 1 to 6, wherein the light-emitting part (3) comprises a light emergent surface (31), and the light emergent surface (31) is a curved surface protruding forward.
A vehicle lamp module, comprising a light source (4) and the vehicle lamp optical component according to any one of claims 1 to 12, wherein the light source (4) is arranged behind the light incident surface (25).
A vehicle, comprising the vehicle lamp module according to claim 13.