Optical system for vehicle light and vehicle

Abstract

The application provides an optical system for a vehicle lamp and a vehicle, comprising a first optical part, a second optical part, a light source and a shell, the first optical part comprises an outer cover and a thick-walled unit, the thick-walled unit comprises a thick-walled unit light-in surface and a thick-walled unit light-out surface, the outer cover and the shell are connected to form a closed space for accommodating the second optical part and the light source; the second optical part comprises a second optical part light-out surface, the light source provides incident light for the second optical part; the second optical part light-out surface is opposite to the thick-walled unit light-in surface, and an air gap is formed between the second optical part and the thick-walled unit light-in surface. By respectively arranging patterns on the second optical part light-out surface and / or the thick-walled unit light-in surface, the light is diffused and homogenized by the patterns, so that the whole thick-walled unit light-out surface can be uniformly lighted, and in the external visual angle, the thickness of the thick-walled unit shields the patterns, thereby improving the overall appearance of the lamp.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and more specifically, to an optical system for vehicle lights and a vehicle. Background Technology

[0002] Vehicle lights are tools used to illuminate roads at night and to signal various driving conditions. Vehicle lights are generally divided into headlights, taillights, turn signals, etc.

[0003] In existing technologies, the optical structures within automotive headlights are all housed within the space formed by the outer cover and the lamp housing. Thick-walled components, light guides, reflectors, and other optical parts are typically injection-molded separately. The large number of optical components in the optical system makes it difficult to control the overall weight, size, and cost of the lamp.

[0004] like Figure 1 As shown, when the outer surface of the existing headlight cover is a textureless optical surface, light refraction occurs, causing the light pattern to change with the shape and making it impossible to control the direction of light diffusion. Furthermore, the thicker the cover, the less effective incident light from the main light-emitting surface, and the stronger the light absorption, resulting in lower light utilization and increased light distribution difficulty. Therefore, conventional designs place all optical components inside the lamp. When the lamp is lit, the cover only allows light to pass through and cannot change the direction of light propagation. For lamps designed to project all light directly forward, the curved shape causes some light from the edge of the cover in the front view to scatter in other directions, creating a dark area A. Moreover, the thicker the cover, the smaller the area supplied to the main light-emitting surface, and the larger the dark area A becomes.

[0005] The usual design solution for thick-walled parts is to add patterns to the outer surface of the thick-walled parts to change the direction of light diffusion, correct the outward deviation of light pattern caused by the tilted shape, and make the light intensity distribution meet the regulatory requirements.

[0006] Existing lighting fixtures have the following drawbacks and require improvement:

[0007] 1. When using thick-walled components as optical components, the patterns on the light-emitting surface of the thick-walled components are arranged, and the outer cover is thin. When observing the lamp from the light-emitting direction, the patterns can be clearly observed through the outer cover, which affects the appearance of the lamp.

[0008] 2. The optical system has many optical components, resulting in high component costs, heavy lamp weight, and poor light emission. Summary of the Invention

[0009] In view of the deficiencies in the prior art, the purpose of this invention is to provide an optical system and vehicle for automotive lights.

[0010] According to the optical system for vehicle lamp provided by the present application, the optical system comprises a first optical component, a second optical component, a light source and a shell, the first optical component comprises an outer cover and a thick-walled unit, the thick-walled unit comprises a thick-walled unit light-in surface and a thick-walled unit light-out surface, the outer cover and the shell are connected to form a closed space for accommodating the second optical component and the light source; the second optical component comprises a second optical component light-out surface, the light source provides incident light for the second optical component; the second optical component light-out surface is opposite to the thick-walled unit light-in surface, and an air gap is formed between the second optical component and the thick-walled unit light-in surface.

[0011] Preferably, the thick-walled unit and the outer cover are integrally formed, the outer cover comprises a light-proof structure, the thick-walled unit comprises a light-transmitting structure, and the opening size of the thick-walled unit light-in surface is greater than the opening size of the thick-walled unit light-out surface.

[0012] Preferably, the opening size of the thick-walled unit light-in surface is greater than the opening size of the second optical component light-out surface.

[0013] Preferably, the second optical component comprises a thick-walled component, the thick-walled component comprises a light-gathering unit and a thick-walled component light-out surface, the thick-walled component light-out surface is the second optical component light-out surface, and the light source is opposite to the light-gathering unit; the second optical component light-out surface and the thick-walled unit light-in surface are both provided with patterns.

[0014] Preferably, the second optical component comprises a thick-walled component, the thick-walled component comprises a light-gathering unit, a reflecting surface and a thick-walled component light-out surface, the thick-walled component light-out surface is the second optical component light-out surface, the light source is opposite to the light-gathering unit, the light emitted by the light source enters the thick-walled component through the light-gathering unit and reaches the second optical component light-out surface after being reflected by the reflecting surface, the second optical component light-out surface and / or at least one reflecting surface are provided with patterns, and the thick-walled unit light-in surface is provided with patterns.

[0015] Preferably, the thick-walled unit light-in surface is provided with strip patterns and skin patterns along the Z direction, and the second optical component light-out surface is provided with step patterns.

[0016] Preferably, the optical system further comprises a circuit board fixedly installed in the closed space formed by the outer cover and the shell, and the light source is electrically connected with the circuit board.

[0017] Preferably, the second optical component comprises a thick-walled component, a light guide strip or a reflecting mirror.

[0018] According to the vehicle provided by the present application, the optical system for vehicle lamp is installed on the vehicle body.

[0019] Preferably, the vehicle body is provided with patterned patterns on the body side sheet metal of the optical system for vehicle lamp.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] 1、The present application forms an air gap between the second optical part and the thick-walled unit light-incident surface, and sets patterns on the second optical part light-incident surface and / or the thick-walled unit light-incident surface, respectively, so that the entire thick-walled unit light-incident surface can be evenly illuminated, and the thickness of the thick-walled unit 12 helps to improve the overall appearance of the lamp.

[0022] 2、The present application sets the thick-walled unit and the outer cover in one piece, which reduces the installation structure inside the lamp, reduces the parts, reduces the weight, and saves the cost.

[0023] 3、The present application increases the number of surfaces that can add optical patterns through the first optical part and the second optical part, increases the diffusion angle on the basis of one layer of diffusion patterns, and greatly improves the lighting uniformity and light efficiency.

[0024] 4、The present application uses a double-color injection-molded outer cover, and there is no gap between the black light-tight area and the transparent area of the outer cover, which solves the problem of LED bright spots or light leakage, and reduces the decorative ring in the traditional scheme.

[0025] 5、The present application can set patterns on the upper side and / or lower side of the thick-walled unit light-incident surface, and when the light source is turned on, part of the light hits the upper side and lower side of the thick-walled unit, and due to the setting of the patterns, when viewed from the outside of the lamp, the lamp presents a three-dimensional lighting effect. BRIEF DESCRIPTION OF DRAWINGS

[0026] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the accompanying drawings:

[0027] Figure 1 The present application mainly embodies the overall structure of the optical system of the conventional design scheme in the background art;

[0028] Figure 2 The present application mainly embodies the overall structure of the optical system in embodiment one;

[0029] Figure 3 The present application mainly embodies the overall structure of the first optical part;

[0030] Figure 4 The present application mainly embodies the opening structure in embodiment one;

[0031] Figure 5 The present application mainly embodies the structure of the car lamp on the car body in embodiment one;

[0032] Figure 6 Figure 1 is a side view of the outer cover of the main embodiment of the present application;

[0033] Figure 7 Figure 2 is a schematic diagram of the overall structure of the optical system of the main embodiment of the present application;

[0034] Figure 8 Figure 3 is a schematic diagram of the overall structure of the optical system of the first variation of the present application;

[0035] Figure 9 Figure 4 is a schematic diagram of the overall structure of the optical system of the second variation of the present application;

[0036] Figure 10 Figure 5 is a schematic diagram of the overall structure of the optical system of the third variation of the present application.

[0037] The figures show:

[0038] First optical member 1 Light source 31

[0039] Outer cover 11 Bracket 4

[0040] Thick-walled unit 12 Housing 5

[0041] Thick-walled unit light inlet surface 123 Air gap 6

[0042] Thick-walled unit light outlet surface 124 Light guide strip 7

[0043] Second optical member 2 Reflector 8

[0044] Second optical member light outlet surface 21 Sheet metal 9

[0045] Light collecting unit 22 Pattern 91

[0046] Reflective surface 23 Thick-walled member 10

[0047] Circuit board 3 DETAILED DESCRIPTION

[0048] The present application will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present application. These are within the scope of the present application.

[0049] Example 1

[0050] As Figure 2 , Figure 3 and Figure 4As shown, the optical system for vehicle lamp provided by the present application comprises a first optical member 1, a housing 5, a second optical member 2, a light source 31, a circuit board 3 and a bracket 4. The first optical member 1 is connected with the housing 5 and forms a closed space. The light source 31 is electrically connected with the circuit board 3. The second optical member 2, the light source 31 and the circuit board 3 are fixedly installed in the closed space formed by the first optical member 1 and the housing 5 through the bracket 4.

[0051] Specifically, the first optical member 1 comprises an outer cover 11 and a thick-walled unit 12. The thick-walled unit 12 comprises a thick-walled unit light-incident surface 123 and a thick-walled unit light-emitting surface 124. The thick-walled unit 12 and the outer cover 11 are integrally injection molded. The integrally molded thick-walled unit 12 and the outer cover 11 can avoid the situation that a part of light rays at the edge of the outer cover 11 in the front view direction scatters to other directions due to the arc modeling of the outer cover 11, resulting in a dark area A.

[0052] The opening size of the thick-walled unit light-incident surface 123 is greater than that of the thick-walled unit light-emitting surface 124. In a feasible implementation, the thick-walled unit light-incident surface 123 is located inside the outer cover 11, and the thick-walled unit light-emitting surface 124 is located outside the outer cover 11. The thick-walled unit light-emitting surface 124 is a smooth non-textured surface structure. The upper side and / or the lower side of the thick-walled unit light-emitting surface 124 of the thick-walled unit 12 located outside the outer cover 11 can be provided with a pattern. When the light source 31 is turned on, a part of light rays hits the upper side and the lower side of the thick-walled unit 12. Due to the setting of the pattern, when viewed from the outside of the lamp, the lamp appears to have a three-dimensional light-emitting effect.

[0053] Further, the outer cover 11 comprises a light-tight structure, and the thick-walled unit 12 comprises a light-transmitting structure. The outer cover 11 and the thick-walled unit 12 can be made of the same material. The first optical member 1 is formed by two-color injection molding of the same material, which can effectively reduce the risk of light leakage. The materials of the outer cover 11 and the thick-walled unit 12 include PC, PMMA or ABS. After integrally molding, a hardening layer is formed on the outer surfaces of the outer cover 11 and the thick-walled unit 12 by spraying paint, coating and other methods. The outer cover 11 and the housing 5 cooperatively form a closed space for accommodating the second optical member 2 and the light source 31.

[0054] The second optical element 2 includes a light-emitting surface 21 and at least one hollow structure. The opening size of the light-incident surface 123 of the thick-walled unit is larger than the opening size of the light-emitting surface 21. The light source 31 provides incident light to the second optical element 2. The light-emitting surface 21 of the second optical element faces the light-incident surface 123 of the thick-walled unit, and an air gap 6 is formed between the second optical element 2 and the light-incident surface 123 of the thick-walled unit. The light emitted by the light source 31 passes through the second optical element 2, through the light-emitting surface 21, and reaches the air gap 6. After passing through the air gap 6, it enters the thick-walled unit 12 through the light-incident surface 123 of the thick-walled unit and finally exits from the light-emitting surface 124 of the thick-walled unit, illuminating the light-emitting surface 124 of the thick-walled unit.

[0055] Furthermore, patterns are provided on the light-emitting surface 21 of the second optical element and on the light-incident surface 123 of the thick-walled unit. These patterns include striped patterns, dotted patterns, or corn kernel patterns; the specific form of the patterns is not limited in this application. The patterns on the light-emitting surface 21 of the second optical element have a diverging and uniform light-dispersing effect. The light, after passing through the uniform light-dispersing and diffusion effects of the patterns on the light-emitting surface 21 of the second optical element and the light-incident surface 123 of the thick-walled unit, is uniformly illuminated across the entire light-emitting surface 124 of the thick-walled unit. Moreover, since the thick-walled unit 12 has a certain thickness, by setting the patterns on the light-emitting surface 21 of the second optical element and / or the light-incident surface 123 of the thick-walled unit, the thickness of the thick-walled unit 12 obscures the patterns from an external viewing angle, thus improving the overall appearance of the lamp.

[0056] like Figure 5 As shown, the second optical element 2 includes a thick-walled element 10, which includes a focusing unit 22, a reflecting surface 23, and a light-emitting surface. The light-emitting surface of the thick-walled element 10 is the light-emitting surface 21 of the second optical element. The light source 31 faces the focusing unit 22. The light emitted by the light source 31 enters the thick-walled element 10 through the focusing unit 22 and is reflected by the reflecting surface 23 before reaching the light-emitting surface 21 of the second optical element. Then, the light passes through the air gap 6 from the light-incident surface 123 of the thick-walled unit and enters the thick-walled unit to illuminate the light-emitting surface 124 of the thick-walled unit.

[0057] Furthermore, the thick-walled component 10 includes at least one reflective surface 23, which may be patterned. The form of the pattern is not specifically limited in this application. The pattern on the reflective surface 23 has a diverging and homogenizing effect on light. After the light passes through the reflective surface 23, the light-emitting surface 21 of the second optical component, and the light-incident surface 123 of the thick-walled unit, the homogenizing and diffusing light is achieved by the pattern, ensuring that the entire light-emitting surface 124 of the thick-walled unit is uniformly illuminated.

[0058] The light source 31 is fixedly installed on the circuit board 3 and is arranged in alignment with the light collecting unit 22 of the thick-wall member. The light collecting unit 22 itself has the feature of strong middle energy. If only one layer of thick-wall member 10 is used, a very uniform effect cannot be achieved. Moreover, the pattern diffusion angle of the thick-wall member 10 is limited. If the diffusion angle is not limited, a huge energy loss will be caused. In the present application, one layer of thick-wall unit 12 is additionally provided so that the light is diffused again on the basis of the original diffusion, thereby achieving the purpose of uniform light emission.

[0059] In the conventional scheme, the installation structure of the thick-wall member 10 and the thick-wall unit 12 inside the lamp causes the optical member to occupy a large Y-direction size, increasing the difficulty of lamp design. In the present application, the thick-wall unit 12 is integrally formed with the outer cover 11. The longitudinal depth size of the thick-wall unit 12 in the Y direction is shared by the space outside the lamp, which can greatly reduce the pressure of the internal structure design of the lamp. On the other hand, in the present application, the thick-wall unit 12 is integrally formed with the outer cover 11, which reduces the installation structure inside the lamp, reduces the parts, reduces the weight, and saves the cost.

[0060] A preferred embodiment is that the thick-wall unit light-incident surface 123 is provided with a strip pattern and a skin pattern along the Z direction. Since the depth of the outer cover 11 is large, the pattern boundary of the second optical member light-emitting surface 21 and the thick-wall unit light-incident surface 123 is blurred, achieving a static appearance effect without pattern. Meanwhile, the skin pattern can also change the conventional thick-wall lighting effect and weaken the dark area A. The second optical member light-emitting surface 21 is provided with a stepped pattern, which adjusts the light-emitting direction of the inclined modeling surface and increases the Z-direction diffusion degree of the light.

[0061] As shown in Figs. Figure 5 and Figure 6 Since the outer cover 11 has a certain curvature, the optical member inside the lamp can only uniformly light the H1 area. The H2 area is likely to have a dark area. In the present application, the stepped pattern provided on the second optical member light-emitting surface 21 can diffuse the light to the H2 area, making the overall lighting effect more uniform.

[0062] In order to further ensure the lighting effect of the thick-wall unit 12, in the present application, the thick-wall unit light-emitting surface 124 is configured to have an opening size smaller than that of the thick-wall unit light-incident surface 123. Meanwhile, it is also required that the opening size of the thick-wall unit light-emitting surface 124 is smaller than that of the thick-wall member, so as to ensure the uniform lighting of the thick-wall unit light-emitting surface 124. In the present application, the opening size refers to the effective light-emitting or light-incident surface size observed from the light-emitting or light-incident side of the lamp.

[0063] The air gap 6 in the present application is the air light guide section between the light exit surface 21 of the second optical element and the light entrance surface 123 of the thick-walled unit. The optical pattern on the surface of the light exit surface 21 of the second optical element is used for collimating light, which not only ensures light efficiency but also has a certain diffusion angle. Due to the existence of the air gap 6, the light can be diffused again by the pattern on the light entrance surface 123 of the thick-walled unit on the outer cover 11, which can increase the light diffusion angle and achieve uniform light emission effect.

[0064] The present application also provides a lamp, which comprises the optical system described above and further comprises a lamp shell, wherein the optical system is arranged in the lamp shell.

[0065] As shown in Figure 5 The present application also provides a vehicle, which comprises the lamp described above and further comprises a vehicle body, wherein the lamp is mounted on the vehicle body. When the lamp is mounted on the vehicle body, the pattern 91 on the surface of the sheet metal 9 can be designed. When viewed from above, the part of the light on the lower side of the thick-walled unit 12 will light up the pattern 91 on the surface of the sheet metal 9, thereby displaying the set pattern.

[0066] Variation 1

[0067] As shown in Figure 7 According to the optical system for vehicle lamp provided by the present application, the thick-walled element 10 can be a side-throw thick-walled optical element or a direct-throw thick-walled element. The direct-throw thick-walled element can improve light efficiency and further reduce the cost of electronic elements.

[0068] Variation 2

[0069] As shown in Figure 8 According to the optical system for vehicle lamp provided by the present application, the second optical element 2 can be a light guide strip 7, which can realize uniform lighting and further reduce the cost of electronic elements.

[0070] Variation 3

[0071] As shown in Figure 9 According to the optical system for vehicle lamp provided by the present application, the second optical element 2 can be a reflector 8, which can realize uniform lighting, product light weight and cost reduction. In addition, the outer cover 11 and the reflector 8 can be an integral part with a hollow part in the middle, which can realize uniform lighting, product light weight and cost reduction.

[0072] In a preferred embodiment of the present application, the emission mirror is an aluminum-coated reflector 8.

[0073] Variation 4

[0074] As shown in Figure 2As shown, in an optical system for vehicle lights provided by the present invention, the second optical element 2 and the first optical mirror are an integral structure, while still retaining the air gap 6.

[0075] Variation 5

[0076] like Figure 10 As shown, in an optical system for vehicle lights provided by the present invention, the light guide section of the second optical element 2 may also include at least one hollow section, while still retaining the air gap 6 between the light emitting surface 21 of the second optical element and the light incident surface 123 of the thick-walled unit in Embodiment 1.

[0077] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0078] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. An optical system for a vehicle lamp, characterized in that, The optical system for vehicle lamp comprises a first optical member (1), a second optical member (2), a light source (31) and a housing (5), the first optical member (1) comprises an outer cover (11) and a thick-walled unit (12), the thick-walled unit (12) comprises a thick-walled unit light-in surface (123) and a thick-walled unit light-out surface (124), the outer cover (11) and the housing (5) are connected to form an enclosed space for accommodating the second optical member (2) and the light source (31); The second optical member (2) comprises a second optical member light-out surface (21), and the light source (31) provides incident light for the second optical member (2); The second optical member light-out surface (21) is opposite to the thick-walled unit light-in surface (123), and an air gap (6) is formed between the second optical member (2) and the thick-walled unit light-in surface (123); The thick-walled unit (12) and the outer cover (11) are integrally formed, the outer cover (11) comprises a light-proof structure, and the thick-walled unit (12) comprises a light-transmitting structure; The opening size of the thick-walled unit light-in surface (123) is greater than that of the thick-walled unit light-out surface (124); The second optical member (2) comprises a thick-walled member (10), the thick-walled member (10) comprises a light-collecting unit (22) and a thick-walled member light-out surface, the thick-walled member light-out surface is the second optical member light-out surface (21), and the light source (31) is opposite to the light-collecting unit (22); The second optical member light-out surface (21) and the thick-walled unit light-in surface (123) are provided with patterns.

2. The optical system for a vehicle lamp according to claim 1, characterized by, The opening size of the thick-walled unit light-in surface (123) is greater than that of the second optical member light-out surface (21).

3. The optical system for a vehicle lamp according to claim 1, characterized by, The second optical member (2) comprises a thick-walled member (10), the thick-walled member (10) comprises a light-collecting unit (22), a reflecting surface (23) and a thick-walled member light-out surface, the thick-walled member light-out surface is the second optical member light-out surface (21), the light source (31) is opposite to the light-collecting unit (22), and the light emitted by the light source (31) enters the thick-walled member (10) through the light-collecting unit (22) and reaches the second optical member light-out surface (21) after being reflected by the reflecting surface (23); The second optical member light-out surface (21) and / or at least one reflecting surface (23) are provided with patterns; The thick-walled unit light-in surface (123) is provided with patterns.

4. The optical system for a vehicle lamp according to claim 1, characterized by, The thick-walled unit light-in surface (123) is provided with strip patterns and skin patterns along the Z direction; The second optical member light-out surface (21) is provided with step patterns.

5. The optical system for a vehicle lamp according to claim 1, wherein The optical system for vehicle lamp further comprises a circuit board (3) fixedly installed in the enclosed space formed by the outer cover (11) and the housing (5), and the light source (31) is electrically connected with the circuit board (3).

6. The optical system for a vehicle lamp according to claim 1, wherein The second optical member (2) comprises a thick-walled member (10), a light guide strip (7) or a reflecting mirror (8).

7. A vehicle characterized by comprising: The optical system for vehicle lamp according to any one of claims 1-6 is further applied to a vehicle body.

8. The vehicle of claim 7, wherein, The vehicle body side metal plate (9) of the vehicle body is provided with pattern patterns (91).

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