CN211575020U

CN211575020U - Lens and car light lighting system

Info

Publication number: CN211575020U
Application number: CN201922204492.7U
Authority: CN
Inventors: 张洁
Original assignee: HASCO Vision Technology Co Ltd
Current assignee: HASCO Vision Technology Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-09-25
Anticipated expiration: 2029-12-04
Also published as: WO2021109362A1

Abstract

The utility model relates to a car light lens discloses a lens, including plane of reflection (1) and with plane of refraction (2) that plane of reflection (1) is relative, the whole or partial region of plane of reflection (1) covers there is reflectance coating (11). The utility model also discloses a car light lighting system. The utility model discloses a lens can enlarge the incident angle scope of light effectively.

Description

Lens and car light lighting system

Technical Field

The utility model relates to a car light lens specifically, relates to a lens, in addition, still relates to a car light lighting system.

Background

The lens can be widely applied to various fields such as security, vehicle-mounted, digital cameras, lasers, optical instruments and the like, and the lens technology is more and more widely applied along with the continuous development of the market. According to the light refraction law, a lens is an optical element made of transparent substances (such as glass, crystal and the like).

The lens on the automobile lighting lamp can change the light propagation direction or control the light distribution, the automobile lighting lamp is an important component of an automobile, and the light emitting effect directly influences the driving safety of the automobile.

On an automobile lighting lamp, a traditional lens adopts a plano-convex lens, the inner side surface of the plano-convex lens is a plane and is arranged towards a light source, the outer side surface of the plano-convex lens is a revolution surface, light rays of the light source are reflected by a reflector to be focused near the focal point of the plano-convex lens and then are emitted from the inner side surface of the plano-convex lens to the outer side surface, and the emitted light rays are in a direction close; however, the defects of large focal length and weak light path changing capability exist; therefore, the prior art provides a car lamp lighting system with small focal length and strong light path changing capability, wherein a lens in the car lamp lighting system adopts a revolution surface as a refraction surface and a plane as a reflection surface, light enters from one end of the refraction surface, and the light does not have refraction phenomenon on the reflection surface by utilizing the total reflection principle, so that the light exits from the other end of the refraction surface again and has strong light path changing capability; however, the range of incident angles of light is limited.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a lens is provided, this lens can enlarge the incident angle scope of light effectively.

The utility model discloses the technical problem that further will solve provides a car light lighting system, and this car light lighting system has compacter structural design.

In order to achieve the above object, a first aspect of the present invention provides a lens including a reflecting surface and a refracting surface opposite to the reflecting surface, wherein all or a part of the reflecting surface is covered with a reflecting film.

Preferably, the refraction surface comprises a light-entering end and a light-exiting end, and the light-exiting end is provided with at least one group of longitudinal stripes.

Furthermore, a group of longitudinal stripes are symmetrically arranged on the left side and the right side of the light outlet end respectively.

Typically, the material of the reflective film is one of aluminum, chromium and silver.

Optionally, the lens is a cemented lens.

The utility model discloses the second aspect provides a car light lighting system, including any one of the above-mentioned first aspect technical scheme lens.

Through the technical scheme, the beneficial effects of the utility model are as follows:

the utility model discloses an among the basic technical scheme, through set up the reflectance coating in whole or the subregion of plane of reflection, can enlarge the incident angle's of light selection scope.

Particularly, when the incident angle of the light is smaller than a specific angle, so that the light can be refracted on the reflecting surface, a reflecting film with a light and dark cut-off line shape can be arranged at a local position of the reflecting surface, so that a part of the light is reflected by the reflecting film with the light and dark cut-off line shape and is emitted by the refracting surface again to form a near light shape, and the rest part of the light is directly emitted from a position on the reflecting surface where the reflecting film is not arranged, so that the formation of the near light shape is not influenced; when the reflecting film is arranged at all the positions of the reflecting surface, light leakage can be avoided, and the light efficiency is improved.

Moreover, the longitudinal stripes are arranged at the light-emitting end of the refraction surface, so that the broadening of the emergent light shape can be enlarged.

In addition, the lens can adopt a cemented lens, and aberration is effectively reduced or eliminated.

Further advantages of the invention, as well as the technical effects of preferred embodiments, will be further explained in the following detailed description.

Drawings

Fig. 1 is a schematic diagram of the optical performance of an embodiment of the present invention;

FIG. 2 is a schematic diagram of the arrangement of longitudinal stripes in one embodiment along direction A of FIG. 1;

FIG. 3 is a schematic diagram of the longitudinal stripe pattern in another embodiment along direction A of FIG. 1;

FIG. 4 is a schematic view of the arrangement of the reflective films in one embodiment along direction B of FIG. 1;

fig. 5 is a schematic structural diagram of another embodiment of the present invention.

Description of the reference numerals

1 reflective surface 11 reflective film

2 refracting surfaces 3 longitudinal stripes

41 meniscus lens 42 biconvex lens

Detailed Description

The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "provided" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It should be noted that, in the following description of the technical solutions of the present invention, the adopted orientation words are defined by using the lens itself as the orientation reference, wherein the direction along the light emitting direction is the front, and the opposite direction is the back, the orientation words "left and right" refer to the left and right sides along the light emitting direction, and the orientation words "up and down" refer to the upper and lower sides of the lens itself. However, the terms "front", "rear", "left", "right", "up" and "down" do not refer to the orientation that the lens is inevitably attached to the vehicle, and in the actual installation situation, the orientation of the lens itself is limited due to the different installation positions of the vehicle lamp, and does not limit the protection range of the lens of the present invention.

Referring to fig. 1 and 4, a lens according to a basic embodiment of the present invention includes a reflective surface 1 and a refractive surface 2 opposite to the reflective surface 1, and a reflective film 11 covers all or a part of the reflective surface 1.

The refraction surface 2 may be a revolution surface, and the reflection surface 1 may be a plane.

In the car lamp lighting system provided by the prior art, the lens realizes the lighting function through the primary refraction of the refraction surface, the reflection of the reflection surface and the secondary refraction of the refraction surface, and because the light needs to be totally reflected on the reflection surface, the selection range of the incident angle of the light is limited according to the total reflection principle.

However, the lens of the present invention sets the reflective film 11 on the reflective surface 1 in a targeted manner, and the reflection action of the reflective film 11 is utilized to expand the selection range of the incident angle of the light, so that the structural design can be more selected in the design of the lighting system of the vehicle lamp.

In particular, as shown in fig. 4, a reflective film 11 having a cutoff line may be disposed on the reflective surface 1, such that a portion of the light is reflected by the reflective film having the cutoff line shape and is refracted again by the refractive surface to form a low beam shape, and the remaining portion of the light is directly refracted by a position on the reflective surface where the reflective film is not disposed, without affecting the formation of the low beam shape; the function of a light screen in the traditional car lamp lighting system can be replaced, and the structural design of the car lamp lighting system is simplified.

In a preferred embodiment, as shown with reference to fig. 1 and 2, the refracting surface 2 comprises a light entrance end and a light exit end, the light exit end being provided with at least one set of longitudinal stripes 3.

Specifically, light rays are incident from the incident end of the refraction surface 2, reflected by the reflection surface 1 and then emergent from the emergent end of the refraction surface 2, so that a light shape is formed; at least one group of longitudinal stripes 3 are arranged at the light-emitting end of the refraction surface 2, so that when light rays are emitted from the light-emitting end, the longitudinal stripes 3 disperse the light rays to the left side and the right side, the broadening of light shapes is enlarged, and a better visual field can be brought to a driver when the vehicle travels at night.

Further, as shown in fig. 3, a set of longitudinal stripes 3 may be symmetrically arranged on each of the left and right sides of the light exit end of the refraction surface 2; therefore, not only can the broadening of the emergent light shape be enlarged, but also the middle area of the light shape has higher illumination intensity.

It should be noted that, in addition to the above two arrangements of the longitudinal stripes 3, the longitudinal stripes 3 may be simply modified according to design requirements, for example, the longitudinal stripes 3 are only arranged on one side of the exit end; these simple modifications should be considered as the disclosure of the present invention, and all fall within the scope of protection of the present invention.

In a specific embodiment, the material of the reflective film 11 may be one of aluminum, chromium, and silver. The surface of the reflecting surface 1 is plated with a metal reflecting film made of aluminum, chromium or silver, the metal has a larger extinction coefficient, when light rays enter the metal reflecting film, the amplitude of the light entering the metal is rapidly attenuated, so that the light energy entering the metal is correspondingly reduced, the reflected light energy is increased, and the reflectivity is higher.

As a preferred embodiment, the lens of the present invention may be a cemented lens. Fig. 5 provides a structure of a cemented lens, in which a concave surface of a meniscus lens 41 is cemented with a convex surface of a biconvex lens 42 by a photosensitive cement. The adhesive layer has no defects of impurities, bubbles, dust and the like, the imaging quality is ensured, and the aberration is effectively reduced or eliminated.

Referring to fig. 1 to 5, a lens according to a preferred embodiment of the present invention includes a reflecting surface 1 and a refracting surface 2, the refracting surface 2 is a surface of revolution, and the reflecting surface 1 is a plane; the refraction surface 2 and the reflection surface 1 are arranged oppositely up and down to form the lens of the utility model, and the whole or partial area of the reflection surface 1 is covered with a reflection film 11; at least one group of longitudinal stripes 3 are arranged at the light-emitting end of the refraction surface 2, so that the broadening of the emergent light shape can be enlarged; the lens can adopt a cemented lens to effectively reduce aberration or eliminate aberration, so that the emergent light shape is clearer; when the reflecting film 11 is arranged in all the areas of the reflecting surface 1, the problem of light leakage can be avoided, and the light efficiency is improved; when the reflection film 11 is provided in a partial area of the reflection surface 1, various desired light shapes can be formed, for example, fig. 4 shows a low beam shape in which the reflection film 11 having a shape of a cut-off line of a bright and dark is provided in a partial area of the reflection surface 1.

The embodiment of the car lamp lighting system of the utility model can have the lens described in the above embodiment, adopt all technical schemes of the above-mentioned all embodiments of lens promptly, consequently have the beneficial effect that all technical schemes of the above-mentioned all embodiments of lens brought at least.

In addition, when the shape of the reflective film 11 on the reflective surface 1 is a bright-dark cut-off line shape, the light reflected by the reflective film from the light source of the vehicle lamp illumination system is sequentially refracted by the refractive surface 2 for the first time, reflected by the reflective film 11 on the reflective surface 1 and refracted by the refractive surface 2 for the second time to be emitted to form a low beam shape, so that the structure of the vehicle lamp illumination system can be simplified; when the reflection film 11 is provided on the entire area of the reflection surface 1, the utilization rate of the light source can be improved.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the utility model within the scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, makes up with any suitable mode including each concrete technical feature. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A lens comprises a reflecting surface (1) and a refracting surface (2) opposite to the reflecting surface (1), and is characterized in that a reflecting film (11) covers all or part of the area of the reflecting surface (1), and the refracting surface (2) is a revolution surface.

2. Lens according to claim 1, characterized in that said refracting surface (2) comprises an entrance end and an exit end, said exit end being provided with at least one set of longitudinal striations (3).

3. The lens according to claim 2, characterized in that the left and right sides of the light exit end are symmetrically arranged with a set of longitudinal stripes (3) each.

4. A lens according to any one of claims 1 to 3, characterized in that the material of the reflecting film (11) is one of aluminium, chromium and silver.

5. A lens according to any one of claims 1 to 3, characterized in that the lens is a cemented lens.

6. A vehicular lamp illumination system characterized by comprising the lens according to any one of claims 1 to 5.