CN211146385U

CN211146385U - Lens capable of uniformly distributing light

Info

Publication number: CN211146385U
Application number: CN201922372183.0U
Authority: CN
Inventors: 陈杨俊; 王春华
Original assignee: Zhuhai Winner Auto Lamp Manufacturing Industrial Co ltd
Current assignee: Zhuhai Winner Auto Lamp Manufacturing Industrial Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-07-31
Anticipated expiration: 2029-12-26

Abstract

The utility model provides a lens for uniformly distributing light rays, wherein the cross section of the lens comprises a light incident surface, a light guide surface, a light emergent surface and an end surface, the light emergent surface is the front surface of the lens, the light guide surface is the back surface of the lens, and the light incident surface and the end surface are respectively positioned at the two ends of the lens; the light incident surface is an inclined surface, the light guide surface is a total reflection surface, the light emergent surface is a semi-conductive semi-light emergent surface with the surface subjected to corrosion dermatoglyph treatment, preferably, the lens is a revolution body or a symmetrical stretching body of the cross section about a vertical axis, and the light incident surface forms a light incident port of the light source. The light is more uniform, free of granular sensation and free of dazzling sensation after passing through the lens through the design of refraction of the light incident surface, total reflection of the light guide surface and semi-conduction and semi-light emission of the light emitting surface. Moreover, the lens has a simple and compact structure, is beneficial to production and mass application, has a very good effect particularly for occasions with limited space, such as automobiles and the like, and has practical application value and popularization value.

Description

Lens capable of uniformly distributing light

Technical Field

The utility model relates to a make light evenly distributed's lens.

Background

the electro-optical lighting lamp is widely applied to the human society as a conventional device, along with the continuous development of science and technology, especially, in recent years, the light source technology is greatly improved and broken through, an L ED light source is used as a relatively emerging light source, the L ED light source is small in size, high in energy efficiency, long in service life, high in cost performance and the like, so that the L ED light source is rapidly developed and widely applied to various fields, an automobile is used as an important utility model of the human society development, the L ED light source is widely used in the light source application, even the L ED light source has excellent performance, but some defect problems (strong particle sense during light emitting, uneven light emitting in large directions, dazzling and the like) need to be improved in the later-stage secondary optical design.

Although there are many light sources with uniform surface light emission in the market, the relatively large size is not favorable for the optical secondary design of multi-light source lamps, the cost is also relatively high, especially for automobile lamps, the application space is limited, and the large-scale application and popularization are not favorable.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems of strong sense of particles, uneven light emission and dazzling in a large direction during light emission, the application provides a lens which has compact structure, dazzling prevention and simple structure and enables light to be uniformly distributed, and the specific implementation mode is as follows:

A lens enabling light rays to be uniformly distributed is disclosed, wherein the cross section of the lens comprises a light incident surface, a light guide surface, a light emergent surface and end surfaces, the light emergent surface is the front surface of the lens, the light guide surface is the back surface of the lens, and the light incident surface and the end surfaces are respectively positioned at two ends of the lens; the light incident surface is an inclined surface, the light guide surface is a total reflection surface, and the light emergent surface is a semi-conduction semi-light emergent surface with the surface subjected to corrosion dermatoglyph treatment.

In one or more embodiments of the present invention, the lens is a rotation body or a symmetrical stretching body of the cross section about the vertical axis, and the light incident surface constitutes a light incident port of the light source.

In one or more embodiments of the present invention, the light incident surface is a complete or segmented plane or arc surface.

In one or more embodiments of the present invention, the light guide surface is a complete or segmented plane or arc surface.

In one or more embodiments of the present invention, the light guiding surface and the light emitting surface are complete arc surfaces, and an included angle between a connection line of two arc surface center points and the vertical axis of the cross section is 120-140 °.

In one or more embodiments of the present invention, the included angle is 130 °.

In one or more embodiments of the present invention, the light incident surface and/or the light guide surface are provided with optical patterns.

In one or more embodiments of the present invention, the end surface is a total reflection surface.

In one or more embodiments of the present invention, the light incident opening is provided with a light guide groove, and the light is incident from the light guide groove into the light incident surface.

The utility model discloses the beneficial implementation effect who brings is: the light is more uniform, free of granular sensation and free of dazzling sensation after passing through the lens through the design of refraction of the light incident surface, total reflection of the light guide surface and semi-conduction and semi-light emission of the light emitting surface. Moreover, the lens has a simple and compact structure, is beneficial to production and mass application, has a very good effect particularly for occasions with limited space, such as automobiles and the like, and has practical application value and popularization value.

Drawings

Fig. 1 is a cross-sectional view of a lens for uniform light distribution in accordance with the present invention;

FIG. 2 is a schematic view of the lens light transmission according to the present invention;

FIG. 3 is a cross-sectional view of a lens structure according to the present disclosure;

Fig. 4 is another lens structure according to the present disclosure.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in fig. 1-4, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout.

The orientation shown in the drawings is not to be considered as limiting the scope of the invention, but merely as a reference to the preferred embodiments, changes in position or addition of numbers or structural simplifications may be made to the product parts shown in the drawings.

The relation of "connected" between the components shown in the drawings and described in the specification can be understood as fixedly connected or detachably connected or integrally connected; the connecting elements can be directly connected or connected through an intermediate medium, and persons skilled in the art can understand the connecting relation according to specific conditions, and can use the connecting elements in a screwed connection or riveting connection or welding connection or clamping connection or embedding connection mode to replace different embodiments in a proper mode.

The terms of orientation such as up, down, left, right, top, bottom, and the like in the description and the orientation shown in the drawings, may be used for direct contact or contact with each other through another feature therebetween; above may be directly above and obliquely above, or it simply means above the other; other orientations may be understood by analogy.

The machining processes used for components having solid shapes can be stamping, forging, casting, wire cutting, laser cutting, casting, injection molding, digital milling, three-dimensional printing, machining, and the like; one skilled in the art can select the materials and the manufacturing process adaptively or in combination according to different processing conditions, cost and precision.

A lens enabling light to be uniformly distributed is disclosed, wherein a cross section 1 (shown in figure 1) of the lens comprises a light incident surface 11, a light guide surface 12, a light emergent surface 13 and an end surface 14, wherein the light emergent surface 13 is the front surface of the lens, the light guide surface 12 is the back surface of the lens, and the light incident surface 11 and the end surface 14 are respectively positioned at two ends of the lens; the light incident surface 11 is an inclined surface, the light guide surface 12 is a total reflection surface, and the light emitting surface 13 is a semi-conductive semi-light emitting surface with a surface subjected to corrosion dermatoglyph treatment. Inside light refracted into different angles with light by income plain noodles 11 and get into lens (as shown in fig. 2), light guide 12 carries out the total reflection with light, improves the light source utilization ratio, and it has two important functions to design into the semi-conductive light-emitting of light-emitting surface 13: firstly, light rays in the lens are refracted in an irregular direction and then uniformly emit out of the light emitting surface 13, so that the lens can be kept in a relatively uniform state when being watched at different angles, secondly, part of the light rays are totally reflected into the lens, so that the light rays are transmitted towards the end face 14 of the lens again, and the light rays are reflected for multiple times, so that the light on the lens is more uniform; the end face 14 mainly provides a mounting and fixing structure for the lens, the end face 14 can be designed into a full-reflection surface, partial light rays are totally reflected to the inside of the lens, the light on the lens is more uniform, the utilization rate of a light source is improved, the end face 14 can also be designed into a part participating in light ray conduction, and the required effect is achieved through angle design. Furthermore, the lens is a revolution body 2 (as shown in fig. 3) or a symmetrical stretching body 3 (as shown in fig. 4) of the cross section 1 about a vertical axis, and the light incident surface 11 forms a light incident port 15 of the light source. Optical patterns such as corn patterns, stripes, pyramid patterns, Vcut patterns and the like can be added on the light incident surface 11 and the light guide surface 12, so that light can be emitted more uniformly.

The light incident surface 11 and the light guide surface 12 can be designed to be plane or arc, and are specifically determined according to design requirements and light effects. In the occasion of needing a large-area light source, such as an outdoor display lamp, the light incident surface 11 and the light guide surface 12 can be combined into a whole in a segmented mode, and the segmented mode is particularly suitable for the application scene of the large light source; the angle can be adjusted according to the design requirement by the sectional design, and the use is flexible and various. When the area of the needed light source is small, such as a car interior decoration lamp, the light incident surface 11 and the light guide surface 12 are designed into an integral form, so that the production is convenient, the working procedure is simple, and the cost is lower.

Experiments prove that when the light guide surface 12 and the light emitting surface 13 are designed into complete cambered surfaces, the connection line of the central points of the two cambered surfaces and the vertical axis of the cross section 1 form an included angle of 120-140 degrees, so that a better uniform light emitting effect can be achieved, and preferably, the uniform light emitting effect is best when the included angle is about 130 degrees. When the light guide surface 12 and the light emitting surface 13 are in other shapes, optimization can be performed by referring to the design of the included angle.

In order to increase the utilization rate of the light source, a light guide groove (not shown) is arranged on the light inlet 15, and light rays are emitted into the light inlet surface 11 from the light guide groove, so that the light rays can be transmitted along the direction of the light guide groove, and the utilization rate of the light source is improved.

The material of lens in this application is not limited to colorless transparent materials such as PC, PMMA, PS, and lens can regard as a single unit to use, also can form various combinations, array, square, circular, different in nature etc. shape, specifically carries out the free combination according to light effect, design demand etc..

the lens is particularly effective to point light sources (such as L ED light sources, small-sized surface light sources and laser point light sources), and has wide application fields, such as outdoor illumination, street lamp illumination, indoor illumination, automobile indoor illumination lamps, signal lamps and the like, and practical application value and popularization value.

The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.

Claims

1. A lens for providing uniform distribution of light, comprising: the cross section of the lens comprises a light incident surface, a light guide surface, a light emergent surface and end surfaces, wherein the light emergent surface is the front surface of the lens, the light guide surface is the back surface of the lens, and the light incident surface and the end surfaces are respectively positioned at two ends of the lens; the light incident surface is an inclined surface, the light guide surface is a total reflection surface, and the light emergent surface is a semi-conduction semi-light emergent surface with the surface subjected to corrosion dermatoglyph treatment.

2. The lens for uniformly distributing light as recited in claim 1, wherein: the lens is a revolution body or a symmetrical stretching body of which the cross section is about a vertical axis, and the light incident surface forms a light incident port of the light source.

3. The lens for uniformly distributing light as recited in claim 2, wherein: the light incident surface is a complete or segmented plane or an arc surface.

4. The lens for uniformly distributing light as recited in claim 2, wherein: the light guide surface is a complete or segmented plane or an arc surface.

5. The lens for uniformly distributing light according to claim 4, wherein: the light guide surface and the light emitting surface are complete cambered surfaces, and the included angle between the connecting line of the central points of the two cambered surfaces and the vertical axis of the cross section is 120-140 degrees.

6. The lens for uniformly distributing light according to claim 5, wherein: the included angle is 130 °.

7. A lens for providing uniform distribution of light, as defined in any one of claims 1 to 6, wherein: and optical patterns are arranged on the light incident surface and/or the light guide surface.

8. A lens for providing uniform distribution of light, as defined in any one of claims 1 to 6, wherein: the end face is a total reflection surface.

9. A lens for providing uniform distribution of light, as defined in any one of claims 2 to 6, wherein: the light inlet is provided with a light guide groove, and light rays are emitted into the light inlet surface from the light guide groove.