Thick-wall part dimming system and vehicle lamp

Abstract

The utility model relates to the technical field of automobile lamps, in particular to a thick-wall part dimming system and an automobile lamp. The thick-wall piece dimming system comprises a light inlet end and a thick-wall piece body, the dimming system is arranged in the thick-wall piece body and comprises at least one gap with a triangular cross section, light entering the thick-wall piece body forms first refracted light when being transmitted to a first inner surface of the gap, and the incidence angle theta 1 and the refraction angle theta 2 of the first refracted light meet the condition that n1sin theta 1 is equal to n2sin theta 2, when the first light enters the air medium and is transmitted to the second inner surface of the gap, second refracted light is formed, and the incidence angle theta 3 and the refraction angle theta 4 of the second refracted light meet the condition that n2sin theta 3 = n1sin theta 4; wherein n1 is the refractive index of the thick-wall part body, and n2 is the air refractive index. According to the utility model, the gap with the triangular cross section is arranged on the thick-wall piece body, the propagation direction of light is changed through twice refraction, the light efficiency is reasonably utilized, and the lighting uniformity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lamps, in particular to a thick-walled part dimming system and an automobile lamp. Background Art

[0002] With the rapid development of automotive lighting technology, a growing variety of headlight designs are emerging. Improving the uniformity and aesthetics of lighting effects is a pressing issue for suppliers. In existing lighting solutions, light is emitted from an LED lamp, passes through a series of mechanisms, and then exits from the light-emitting surface of a thick-walled component to achieve a more uniform lighting effect.

[0003] Due to the limitations of vehicle lighting design (especially the inclined headlights and taillights), there is a significant difference in front-to-back height. Most existing solutions rely on direct or reflective structures. Since most optical designs direct light directly forward, this results in limited front-to-back space, complicating the placement of LED lights and the design of optical components. Therefore, it is necessary to design an optical component that can redirect light, shifting light from bright areas to dark areas and illuminating them. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problems existing in the prior art in the above background technology, a thick-walled component dimming system is provided.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a thick-walled component dimming system, including a light input end and a thick-walled component body, the thick-walled component body having a light output surface, the light emitted by the light source enters the thick-walled component body through the light input end,

[0006] The dimming system is arranged inside the thick-walled component body, which includes at least one gap with a triangular cross-section. When the light entering the thick-walled component body is transmitted to the first inner surface of the gap, a first refracted light is formed. The incident angle θ1 and the refraction angle θ2 of the first refracted light satisfy: n1sinθ1=n2sinθ2. When the first light enters the air medium and is transmitted to the second inner surface of the gap, a second refracted light is formed. The incident angle θ3 and the refraction angle θ4 of the second refracted light satisfy: n2sinθ3=n1sinθ4; wherein n1 is the refractive index of the thick-walled component body, and n2 is the refractive index of air.

[0007] Furthermore, the internal angles at both ends of the first inner surface of the gap are respectively a first internal angle α and a second internal angle β, and the gap also includes a third internal angle γ. The first internal angle α satisfies: α=θ2+θ3, the second internal angle β satisfies: β=90°-θ2, and the third internal angle γ satisfies: γ=90°-θ3.

[0008] Furthermore, the first interior angle α is between 10° and 170°.

[0009] Furthermore, the lengths of the three inner surfaces of the gap are between 1 mm and 40 mm.

[0010] Furthermore, three inner surfaces of the gap are provided with a pattern structure or a leather grain structure.

[0011] Furthermore, the gap is in the form of a triangular prism, a triangular pyramid or a triangular pyramid structure.

[0012] Furthermore, the thick-walled component body is made of polymethyl methacrylate or polycarbonate.

[0013] Furthermore, the light incident end is a concentrator or a reflector.

[0014] A vehicle lamp is also provided, comprising the thick-walled member dimming system described in the above solution.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a gap with a triangular cross section on the thick-walled component body, so that the light reflected into the thick-walled component body is refracted twice from the thick-walled component body (i.e., the optically dense medium) to the air (i.e., the optically sparse medium) and then back into the thick-walled component body (i.e., the optically dense medium), thereby changing the propagation direction of the light, reasonably utilizing the light efficiency, and improving the lighting uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 It is a structural diagram of the present utility model.

[0019] Figure 2 yes Figure 1 Top view of .

[0020] Figure 3 It is a light path diagram at the gap of the utility model.

[0021] In the figure: 1. Thick-walled component body, 10. Total reflection surface, 11. Light emitting surface, 12. Gap, 2. Concentrator. DETAILED DESCRIPTION

[0022] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0023] like Figures 1 to 3As shown, the light incident end of this embodiment is illustrated by taking the concentrator 2 as an example. A thick-walled component dimming system includes a concentrator 2 and a thick-walled component body 1. The thick-walled component body 1 is provided with a total reflection surface and a light-emitting surface 11. The concentrator 2 is arranged below the light source and above the total reflection surface 10 of the thick-walled component body 1. The light emitted by the light source passes through the concentrator 2 and is totally reflected by the total reflection surface 10 to enter the thick-walled component body 1. The dimming system is arranged inside the thick-walled component body 1, which includes a plurality of gaps 12 with triangular cross-sections. When the light entering the thick-walled component body 1 is transmitted to the first inner surface of the gap 12, a first refracted light is formed. The incident angle θ1 and the refraction angle θ2 of the first refracted light satisfy: n1sinθ1= When the first incident light enters the air medium and travels to the second inner surface of gap 12, it forms a second refracted light. The incident angle θ3 and refractive angle θ4 of the second refracted light satisfy the following equation: n2sinθ3=n1sinθ4; where n1 is the refractive index of the thick-walled component body 1, and n2 is the refractive index of air. Based on the design space, the incident angle θ1 of the first refracted light and the refractive angle θ4 of the second refracted light, i.e., the direction of the incident and outgoing light, can be determined. Since the thick-walled component body 1 is made of polymethyl methacrylate or polycarbonate, the refractive index n1 of the thick-walled component body 1 can be determined.

[0024] The interior angles at both ends of the first inner surface of gap 12 are first and second interior angles β, respectively. The gap also includes a third interior angle γ. The first interior angle α satisfies: α = θ2 + θ3, the second interior angle β satisfies: β = 90° - θ2, and the third interior angle γ satisfies: γ = 90° - θ3. Generally, the refractive index of air n1 is set to 1. The refraction angle θ2 of the first refracted light can be calculated by n1sinθ1 = n2sinθ2, and the incident angle θ3 of the second refracted light can be calculated by n2sinθ3 = n1sinθ4, thereby obtaining the first interior angle α. Preferably, the first interior angle α is between 10° and 170°.

[0025] The lengths of the three inner surfaces of gap 12 can be adjusted based on actual needs, preferably ranging from 1 mm to 40 mm. The three inner surfaces of gap 12 can be provided with a patterned or leather-grained structure as needed. In practical applications, gap 12 can take the form of a triangular prism, triangular pyramid, or triangular pyramid, and these structures can also be modified based on actual needs.

[0026] In addition, in actual use, the thick-walled body 1 structure is not limited to the present embodiment, and the number of gaps 12 is not limited. There can be one or more gaps 12, and even if there are multiple gaps 12, they can be different. Their shape can be adjusted one-to-one according to the needs of use. In addition to using a concentrator, other forms such as a reflector can also be used at the light input end.

[0027] like Figure 3As shown, the light emitted by the light source passes through the concentrator 2 and is reflected by the total reflection surface into the thick-walled component body 1. Then the light is emitted from the thick-walled component body 1 (optically denser medium), passes through the first inner surface of the gap 12, refracts into the air (optically sparser medium), and then refracts through its second inner surface, enters the thick-walled component body 1 (optically denser medium), and finally, is emitted from the light exit surface 11.

[0028] The thick-walled component dimming system of this embodiment is suitable for vehicle lamps. Therefore, a vehicle lamp including the thick-walled component dimming system of this embodiment can be provided.

[0029] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A thick-walled component dimming system, comprising a light input end and a thick-walled component body (1), wherein the thick-walled component body (1) has a light output surface (11), and light emitted by a light source enters the thick-walled component body (1) through the light input end, characterized in that: The dimming system is arranged inside the thick-walled component body (1), and includes at least one gap (12) with a triangular cross-section. When light entering the thick-walled component body (1) is transmitted to the first inner surface of the gap (12), a first refracted light is formed, and the incident angle θ1 and the refraction angle θ2 of the first refracted light satisfy: n1sinθ1=n2sinθ2. When the first incident light enters the air medium and is transmitted to the second inner surface of the gap (12), a second refracted light is formed, and the incident angle θ3 and the refraction angle θ4 of the second refracted light satisfy: n2sinθ3=n1sinθ4; wherein n1 is the refractive index of the thick-walled component body (1), and n2 is the refractive index of air.

2. The thick-walled component dimming system according to claim 1, characterized in that: The inner angles at both ends of the first inner surface of the gap (12) are respectively a first inner angle α and a second inner angle β. The gap (12) further includes a third inner angle γ. The first inner angle α satisfies: α=θ2+θ3, the second inner angle β satisfies: β=90°-θ2, and the third inner angle γ satisfies: γ=90°-θ3.

3. The thick-walled component dimming system according to claim 2, characterized in that: The first interior angle α is between 10° and 170°.

4. The thick-walled component dimming system according to claim 1, characterized in that: The lengths of the three inner surfaces of the gap (12) are between 1 mm and 40 mm.

5. The thick-walled component dimming system according to claim 1, characterized in that: The three inner surfaces of the gap (12) are provided with a pattern structure or a leather grain structure.

6. The thick-walled component dimming system according to claim 1, characterized in that: The gap (12) is in the form of a triangular prism, a triangular pyramid or a triangular pyramid structure.

7. The thick-walled component dimming system according to claim 1, characterized in that: The material of the thick-walled part body (1) is polymethyl methacrylate or polycarbonate.

8. The thick-walled component dimming system according to claim 1, characterized in that: The light incident end is a condenser or a reflector.

9. A vehicle lamp, characterized in that: The thick-walled component dimming system comprises the thick-walled component dimming system according to any one of claims 1 to 8.

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