Semi-collimating lens structure, optical system and vehicle lamp
By designing a semi-collimating lens structure, using an integrated light-incident and light-out surface, and combining multiple structural surfaces and reflectors, dual-light multiplexing of the automotive lamp optical system is achieved. This solves the problem that traditional automotive lamps cannot simultaneously achieve unidirectional collimation and diffusion, improving light utilization efficiency and reducing costs.
Patent Information
- Application Number
- CN202520206488.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-02-10
AI Technical Summary
Existing automotive lamp optical structures are difficult to achieve dual-light multiplexing, especially when the light intensity requirements for the left and right viewing angles are large while the vertical viewing angles are small. Traditional lens structures cannot simultaneously achieve collimation in one direction and diffusion in another direction, and they are also costly.
Design a semi-collimating lens structure, including an integrally formed light-incident surface and a light-exit surface. The light-incident surface has multiple structural surfaces and a real focal point, while the light-exit surface has a virtual focal point. By combining different structural surfaces and reflectors, unidirectional collimation and diffusion of light in another direction can be achieved. The integral molding process reduces costs.
It achieves dual-light multiplexing effect in the optical system, improves light utilization efficiency, and reduces production costs through one-piece molding.
Smart Images
Figure CN223679385U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to semi -collimating lens technical field especially a kind of semi -collimating lens structure, optical system and car light. BACKGROUND
[0002] On traditional project, optical form is mostly direct or reflection type scheme, regulation and uniformity are the factors when designing in industry. In prior art, most of them are for the demand of realizing double light multiplexing, at least one light color will be defocused;But traditional car light function, left and right viewing angle light intensity requirement is larger, upper and lower viewing angle is relatively small, conventional optical structure usually controls together, such as circular condenser and circular lens, cannot be realized. SUMMARY
[0003] The utility model solves technical problems: overcome the deficiencies in prior art, provide a kind of semi -collimating lens structure, optical system and car light. The lens structure of the utility model is functional multiplexing optical structure, by this structure, single direction collimating light collection can be realized, in addition, the effect of diffusing light in another direction, and two light colors are not defocused, applied in some required working condition scene;In addition, this structure is integrally formed, saves cost, reasonably utilizes and distributes light, is efficient, and can realize the effect of double light multiplexing;This scheme is good implementation, can solve the problem of two directions being controlled separately.
[0004] The utility model solves technical problems by adopting the technical scheme of:
[0005] A kind of semi -collimating lens structure, including integrally formed light entrance surface and light exit surface, light emitted by light source is irradiated to light exit surface via light entrance surface;The light entrance surface at least includes first structure surface and second structure surface, first structure surface and second structure surface are arranged at intervals, first structure surface has first real focus F1, second structure surface has second real focus F2, first real focus F1 and second real focus F2 are not coincidently arranged, and different light rays emitted at first real focus F1 and second real focus F2 are respectively transmitted via first structure surface and second structure surface;
[0006] The light exit surface has virtual focus F', and virtual focus F' is located behind first real focus F1 and second real focus F2, and virtual focus F' is arranged away from the light entrance surface.
[0007] Further, the light entrance surface further includes third structure surface and fourth structure surface for totally reflecting light rays, the third structure surface has second real focus F2, the fourth structure surface has first real focus F1, the third structure surface is arranged outside the first structure surface, and the fourth structure surface is arranged outside the second structure surface.
[0008] Further, the light entrance surface comprises two first structure surfaces and two second structure surfaces, one first structure surface and one second structure surface are connected, the second structure surface is connected with the first structure surface through the first connecting surface, and the first structure surface is connected with the second structure surface through the first connecting surface.
[0009] Further, at least one of the light entrance surface and the light exit surface is provided with a light distribution pattern or a skin pattern.
[0010] Further, the first structure surface and the second structure surface are distributed upwards and downwards, and the first real focal point F1 and the second real focal point F2 are distributed upwards and downwards.
[0011] Further, the third structure surface is connected with the first structure surface through the second connecting surface, and the fourth structure surface is connected with the second structure surface through the third connecting surface.
[0012] An optical system comprises a lens, and a reflector is arranged on the light exit side of the lens to reflect the light emitted by the lens, wherein the lens adopts the lens structure.
[0013] Further, the reflector is a reflecting surface close to one side of the lens, and the reflecting surface is entirely or partially provided with an aluminum coating.
[0014] Further, the reflector is a parabolic reflector, a curved reflector or an inclined plane reflector.
[0015] A vehicle lamp adopts the optical system.
[0016] The utility model discloses the beneficial effect is:
[0017] (1), the lens structure of the utility model, first structure surface and second structure surface interval setting, first structure surface has first real focal point F1, and second structure surface has second real focal point F2, and first real focal point F1 and second real focal point F2 do not coincide and set, and the different light rays of first real focal point F1 and second real focal point F2 are respectively transmitted through first structure surface and second structure surface;The light exit surface has virtual focal point F', and the virtual focal point F' is located behind first real focal point F1 and second real focal point F2 and sets;The structure is the lens structure with double real focal points, and single direction collimation can be realized, and the other direction diffusion can be realized;
[0018] (2), simultaneously, the structure is the lens structure with virtual focal point, so that more light rays can be utilized, and efficiency is improved;
[0019] (3), the lens structure of the utility model is integrally formed, and cost is greatly reduced. DRAWINGS
[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0021] Figure 1 is a structural schematic diagram of the lens structure in Example 1;
[0022] Figure 2 is a cross-sectional ray path diagram of the light entrance surface in Example 1;
[0023] Figure 3 is a bottom view of Figure 2
[0024] Figure 4 is a structural schematic diagram of the optical system in Example 1;
[0025] Figure 5 is a horizontal cross-sectional ray path diagram of the optical system in Example 1;
[0026] Figure 6 is a structural schematic diagram of the lens structure in Example 2;
[0027] Figure 7 is a cross-sectional ray path diagram of the light entrance surface in Example 2;
[0028] In the figure: 100. lens, 200. mirror, 1. light entrance surface, 2. light exit surface, 11. first structure surface, 12. second structure surface, 13. first connecting surface, 14. third structure surface, 15. second connecting surface, 16. fourth structure surface, 17. third connecting surface. DETAILED DESCRIPTION
[0029] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as those commonly understood by one of ordinary skill in the art to which the present application pertains.
[0030] It should be noted that the terms used herein are only for the purpose of describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form also includes the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.
[0031] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0032] Example 1
[0033] like Figures 1-3 The illustrated semi-collimating lens structure includes an integrally formed incident surface 1 and an exit surface 2. Light emitted from a light source illuminates the exit surface 2 via the incident surface 1. The incident surface 1 includes at least a first structural surface 11 and a second structural surface 12, which are spaced apart. The first structural surface 11 has a first real focal point F1, and the second structural surface 12 has a second real focal point F2. The first and second real focal points F1 and F2 do not coincide, and different light rays emitted from the first and second real focal points F1 and F2 are respectively transmitted through the first and second structural surfaces 11 and 12. The exit surface 2 has a virtual focal point F', which is located behind the first and second real focal points F1 and away from the incident surface 1. This structure can achieve collimation in one direction and diffusion in another.
[0034] The light-incident surface 1 includes two first structural surfaces 11 and two second structural surfaces 12. One of the first structural surfaces 11 and one of the second structural surfaces 12 are connected. The outer side of the second structural surface 12 is connected to the first structural surface 11 through a first connecting surface 13. The outer side of the first structural surface 11 is connected to the second structural surface 12 through the first connecting surface 13.
[0035] At least one of the light-incident surface 1 and the light-exit surface 2 is provided with a light distribution pattern or texture.
[0036] The first structural plane 11 and the second structural plane 12 are distributed vertically, and the first real focus F1 and the second real focus F2 are also distributed vertically.
[0037] The light emitted from the first real focal point F1 is refracted by the two first structural surfaces 11 and then refracted out from the light-emitting surface 2. The backward extensions of the light rays converge at the virtual focal point F'. Similarly, the light emitted from the second real focal point F2 is refracted by the two second structural surfaces 12 and then refracted out from the light-emitting surface 2. The purpose of this virtual focal point design is to make more light rays available and improve efficiency.
[0038] like Figure 4 and Figure 5An optical system is shown, which comprises a lens 100, and a reflector 200 is arranged on the light exit side of the lens 100 to reflect the light rays emitted by the lens 100, and the lens 100 adopts the lens structure described above. The light rays emitted by the lens 100 are reflected by the reflector 200 to form collimated light rays.
[0039] The side of the reflector 200 close to the lens 100 is a reflecting surface, and the reflecting surface is wholly or partially provided with an aluminum coating, i.e. the region of the reflecting surface that reflects the light rays is provided with the aluminum coating. The reflector 200 is a parabolic reflector.
[0040] A vehicle lamp adopts the optical system described above.
[0041] Embodiment 2
[0042] The difference between this embodiment and Embodiment 1 is that, as shown in Figs. Figure 6 and Figure 7 The light entrance surface 1 in this embodiment further comprises a third structure surface 14 that totally reflects the light rays and a fourth structure surface 16 that totally reflects the light rays, the third structure surface 14 has a second real focal point F2, the fourth structure surface 16 has a first real focal point F1, the third structure surface 14 is arranged outside the first structure surface 11, and the fourth structure surface 16 is arranged outside the second structure surface 12. The third structure surface 14 is connected to the first structure surface 11 through a second connecting surface 15, and the fourth structure surface 16 is connected to the second structure surface 12 through a third connecting surface 17.
[0043] The light emitted by the first real focal point F1 is partially refracted by the two first structure surfaces 11 and then collimated and emitted from the light exit surface 2, and the other part of the light is refracted by the third connecting surface 17, totally reflected by the fourth structure surface 16, and then collimated and emitted from the light exit surface 2, and the reverse extension of the light rays converges at the virtual focal point F'. The light emitted by the second real focal point F2 is similarly partially refracted by the two second structure surfaces 12 and then collimated and emitted from the light exit surface 2, and the other part of the light is refracted by the second connecting surface 15, totally reflected by the third structure surface 14, and then collimated and emitted from the light exit surface 2.
[0044] In summary, the lens structure of the utility model has the following advantages:
[0045] (1) In the lens structure of the utility model, the first structure surface 11 and the second structure surface 12 are arranged at intervals, the first structure surface 11 has a first real focal point F1, the second structure surface 12 has a second real focal point F2, the first real focal point F1 and the second real focal point F2 are arranged not to coincide, and the different light rays emitted at the first real focal point F1 and the second real focal point F2 are respectively transmitted through the first structure surface 11 and the second structure surface 12; the light exit surface 2 has a virtual focal point F', and the virtual focal point F' is arranged behind the first real focal point F1 and the second real focal point F2; the structure is a lens structure with double real focal points, which can realize single-direction collimation and another-direction diffusion.
[0046] (2), simultaneously, the structure is a lens structure with a virtual focal point, so that more light can be utilized, improving efficiency;
[0047] (3), the lens structure of the utility model is integrally formed, which greatly reduces the cost.
[0048] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A semi-collimating lens structure, characterized by: The light source emits light which is irradiated to the light exit surface (2) via the light entrance surface (1); the light entrance surface (1) comprises at least a first structure surface (11) and a second structure surface (12), the first structure surface (11) and the second structure surface (12) are arranged in a spaced manner, the first structure surface (11) has a first real focal point F1, the second structure surface (12) has a second real focal point F2, the first real focal point F1 and the second real focal point F2 are arranged in a non-overlapping manner, different light rays emitted at the first real focal point F1 and the second real focal point F2 are respectively transmitted via the first structure surface (11) and the second structure surface (12); The light exit surface (2) has a virtual focal point F', the virtual focal point F' is located behind the first real focal point F1 and the second real focal point F2, and the virtual focal point F' is arranged away from the light entrance surface (1).
2. The semi-collimating lens structure of claim 1, wherein: The light entrance surface (1) further comprises a third structure surface (14) and a fourth structure surface (16) for totally reflecting light, the third structure surface (14) has the second real focal point F2, the fourth structure surface (16) has the first real focal point F1, the third structure surface (14) is arranged outside the first structure surface (11), and the fourth structure surface (16) is arranged outside the second structure surface (12).
3. The semi-collimating lens structure of claim 1, wherein: The light entrance surface (1) comprises two first structure surfaces (11) and two second structure surfaces (12), one first structure surface (11) and one second structure surface (12) are connected, the second structure surface (12) is connected with the first structure surface (11) outside through a first connecting surface (13), and the first structure surface (11) is connected with the second structure surface (12) outside through the first connecting surface (13).
4. The semi-collimating lens structure of claim 1, wherein: At least one of the light entrance surface (1) and the light exit surface (2) is provided with a light distribution pattern or a skin pattern.
5. The semi-collimating lens structure of claim 1, wherein: The first structure surface (11) and the second structure surface (12) are arranged in an up-down distribution, and the first real focal point F1 and the second real focal point F2 are arranged in an up-down distribution.
6. The semi-collimating lens structure of claim 2, wherein: The third structure surface (14) is connected with the first structure surface (11) through a second connecting surface (15), and the fourth structure surface (16) is connected with the second structure surface (12) through a third connecting surface (17).
7. An optical system characterized by: The lens (100) is provided with a reflector (200) for reflecting the light emitted by the lens (100) out, and the lens (100) adopts the lens structure according to any one of claims 1-6.
8. The optical system of claim 7, wherein: The reflector (200) is a reflecting surface close to the lens (100), and the reflecting surface is wholly or partially provided with an aluminum plating layer.
9. The optical system of claim 7, wherein: The reflector (200) is a parabolic reflector, a curved reflector or an inclined reflector.
10. A vehicle lamp characterized by The optical system according to any one of claims 7-9 is adopted.