CN210662719U

CN210662719U - Lens with side light emitting function

Info

Publication number: CN210662719U
Application number: CN201921914623.4U
Authority: CN
Inventors: 周良
Original assignee: Zhejiang Baikang Optical Co ltd
Current assignee: Zhejiang Baikang Optical Co ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-06-02
Anticipated expiration: 2029-11-07

Abstract

The utility model provides a lens with luminous function of side, its includes the lens main part, sets up lens main part one end just is used for holding LED's income light chamber, and one sets up the play light chamber at lens main part other end. The light inlet cavity comprises a light inlet cavity body and a light inlet surface, wherein the light inlet cavity body is arranged at one end, close to the light outlet cavity, of the light inlet cavity body. The light emitting cavity comprises a first light emitting surface, a total reflection surface surrounding the first light emitting surface, and a second light emitting surface surrounding the edge of the total reflection surface. On the section along the central axis of the lens body, the outer contour of the light-emitting cavity is in a U shape. The connection positions among the first light-emitting surface, the total reflection surface and the second light-emitting surface are all arc-shaped so as to increase the light-emitting areas of the first light-emitting surface, the total reflection surface and the second light-emitting surface. The lens with the side light-emitting function has a large light-emitting angle, uniform illuminating light and soft light.

Description

Lens with side light emitting function

Technical Field

The utility model belongs to the technical field of the lens, especially a lens with luminous function of side.

Background

The lens is an optical element which is made of transparent substances and has a part of spherical surface, can be widely applied to various fields such as security protection, vehicle-mounted, digital cameras, lasers, optical instruments and the like, and has increasingly wide application along with the continuous development of the market.

The traditional lens only can play a role in condensing light, the light emitting angle is small, light is concentrated when going out, the light intensity is high, and the lens is inconvenient to use on some occasions.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a lens that has side light-emitting function that luminous angle is big to satisfy the industrial demand.

The utility model provides a lens with luminous function of side, its includes a lens main part, one sets up lens main part one end just is used for holding the income light chamber of LED, and one sets up the play light chamber at lens main part other end. The light inlet cavity and the light outlet cavity are arranged along the axial direction of the lens main body, and the positions of the light inlet cavity and the light outlet cavity correspond to each other. The light inlet cavity comprises a light inlet cavity body and a light inlet surface, wherein the light inlet cavity body is arranged close to one end of the light outlet cavity. The light emitting cavity comprises a first light emitting surface, a total reflection surface surrounding the first light emitting surface, and a second light emitting surface surrounding the edge of the total reflection surface. The total reflection surface is obliquely arranged. The diameters of the light-emitting cavity from one end close to the light-entering cavity to one end far away from the light-entering cavity are sequentially increased. On the section along the central axis of the lens body, the outer contour of the light-emitting cavity is in a U shape. The connection positions among the first light-emitting surface, the total reflection surface and the second light-emitting surface are all arc-shaped so as to increase the light-emitting areas of the first light-emitting surface, the total reflection surface and the second light-emitting surface.

Further, the lens body is made of polymethyl methacrylate.

Further, both side edges of the lens body are formed in an arc shape in a cross section along the central axis of the lens body.

Further, the light-entering cavity body sequentially comprises a first cavity and a second cavity.

Further, the first cavity is close to the light emitting cavity, and the diameter of the second cavity is larger than that of the first cavity.

Further, on the section along the central axis of the lens body, the diameter of the first cavity is larger than that of the first light-emitting surface.

Compared with the prior art, the utility model provides a lens with luminous function of side passes through light-emitting cavity follows lens main part lateral wall jets out, in order to realize the lens main part side is luminous. The light emitting cavity comprises a first light emitting surface, a total reflection surface surrounding the first light emitting surface, and a second light emitting surface surrounding the edge of the total reflection surface. On the section along the central axis of the lens main body, the outline of the light-emitting cavity is in a U shape, the connection positions among the first light-emitting surface, the total reflection surface and the second light-emitting surface are all arc-shaped, the light-emitting areas of the first light-emitting surface and the second light-emitting surface and the reflection area of the total reflection surface are increased, so that the light-emitting cavity fully refracts and reflects light, and the light is uniformly emitted to one side of the light-emitting cavity. The light can penetrate through the first light-emitting surface and the second light-emitting surface and is emitted along the axial direction of the lens main body, and the total reflection surface is obliquely arranged and reflects the light to two sides of the side wall of the lens main body, so that the side light emission of the lens main body is realized, and the light-emitting angle is large. The lens with the side light-emitting function has a large light-emitting angle, uniform illuminating light and soft light.

Drawings

Fig. 1 is a schematic structural diagram of a lens with a side-emitting function according to the present invention.

Fig. 2 is a schematic cross-sectional view of the lens with side-emitting function in fig. 1.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1 to fig. 2, it is a schematic structural diagram of the lens with side light emitting function provided by the present invention. The lens with the side light emitting function comprises a lens body 10, a light inlet cavity 20 and a light outlet cavity 30, wherein the light inlet cavity 20 is arranged at one end of the lens body 10 and is used for accommodating an LED, and the light outlet cavity is arranged at the other end of the lens body 20. The lens with side-emitting function also includes other functional modules, such as assembly components, etc., which should be known to those skilled in the art, and will not be described in detail herein.

The lens body 10 is an optical element made of a transparent substance and having a spherical surface, and in this embodiment, the lens body 10 is made of polymethyl methacrylate (PMMA for short), which has the advantages of high transparency, low cost, easy machining, and the like, and is a glass substitute material that is often used in the ordinary. In the cross section along the central axis of the lens body 10, the two side edges of the lens body 10 are arc-shaped, so that the volume of the lens body 10 is reduced, and the lens body 10 is convenient to mount.

The light-entering cavity 20 comprises a light-entering cavity body 21 and a light-entering surface 22 arranged at one end of the light-entering cavity body 21 close to the light-exiting cavity 30. The light-entering cavity 20 and the light-exiting cavity 30 are both arranged along the axial direction of the lens body 10, and the light-entering cavity 20 and the light-exiting cavity 30 are corresponding to each other. The light inlet cavity 20 is used for accommodating an LED lamp, light of the LED lamp can penetrate through the light inlet surface 12 to irradiate towards the light outlet cavity 30, and the light is emitted through the light outlet cavity 30. In this embodiment, the light-entering cavity main body 21 sequentially includes a first cavity 211 and a second cavity 212, the first cavity 211 is close to the light-exiting cavity 30, and the diameter of the second cavity 212 is larger than that of the first cavity 211, it is conceivable that the connecting position of the second cavity 212 and the first cavity 211 is stepped to facilitate the installation of the LED lamp. The central axis of the light emitting cavity 30 is perpendicular to the light incident surface 12, so that the light rays of the light incident cavity 10 are refracted by the light incident surface 12 and then emitted to the light emitting cavity 30. The central axis of the light-entering cavity 20 coincides with the central axis of the light-exiting cavity 30, so that the light in the light-entering cavity 20 is uniformly emitted to the light-exiting cavity 30.

The light-emitting cavity 30 includes a first light-emitting surface 31, a total reflection surface 32 surrounding the first light-emitting surface 31, and a second light-emitting surface 33 surrounding an edge of the total reflection surface 32.

The first light emitting surface 31 is close to the light incident surface 12. On the cross section along the central axis of the lens body 10, the first light emitting surface 31 is arc-shaped, and the diameter of the first cavity 211 is larger than that of the first light emitting surface 31, so that the light can irradiate onto the total reflection surface 32 and the second light emitting surface 33.

The total reflection surface 32 is obliquely disposed to reflect light to both sides of the sidewall of the lens body 10, thereby realizing side light emission of the lens body 10. The diameter of the light-exiting cavity 30 increases gradually from the end close to the light-entering cavity 20 to the end far from the light-entering cavity 20, and it is conceivable that the total reflection surface 32 is inclined to the side far from the central axis of the lens body 10 so as to make the light exit from the side wall of the lens body 10.

The light can pass through the first light emitting surface 31 and the second light emitting surface 33 and exit along the axial direction of the lens body 10. When the light irradiates the total reflection surface 32, the total reflection surface 32 reflects the light to two sides of the sidewall of the lens body 10, so that the light-emitting cavity 30 emits light. The diameters of the light-emitting cavity 30 from the end close to the light-entering cavity 20 to the end far from the light-entering cavity 20 increase gradually in sequence, so that the total reflection surface 32 does not block the light when the light passes through the first light-emitting surface 31.

On the cross section along the central axis of the lens body 10, the outer contour of the light-emitting cavity 30 is "U" shaped, the first light-emitting surface 31, the total reflection surface 32, and the second light-emitting surface 33 are all disposed outside the light-emitting cavity 30, it is conceivable that the outer contour of the first light-emitting surface 31, the total reflection surface 32, and the second light-emitting surface 33 enclosed together is "U" shaped, and the connection positions among the first light-emitting surface 31, the total reflection surface 32, and the second light-emitting surface 33 are all arc-shaped, so as to increase the light-emitting areas of the first light-emitting surface 31, the total reflection surface 32, and the second light-emitting surface 33, i.e. increase the refraction light-emitting areas of the first light-emitting surface 31, the second light-emitting surface 33, and the reflection areas of the total reflection surface 32, thereby increasing the light-emitting angle of the light-emitting cavity 30, the light is dispersed, and the light distribution curve is gentle, and the light distribution curve refers to the light intensity distribution of the light source in each direction of the space, that is, the light is uniformly emitted from one end of the light-emitting cavity 30.

Compared with the prior art, the utility model provides a lens with luminous function of side passes through light-emitting cavity 30 is followed lens main part 10 lateral wall jets out, in order to realize lens main part 10 side is luminous. The light-emitting cavity 30 includes a first light-emitting surface 31, a total reflection surface 32 surrounding the first light-emitting surface 31, and a second light-emitting surface 33 surrounding an edge of the total reflection surface 32. On the cross section along the central axis of the lens body 10, the outer contour of the light-emitting cavity 30 is U-shaped, and the connection positions among the first light-emitting surface 31, the total reflection surface 32, and the second light-emitting surface 33 are all arc-shaped, so that the light-emitting areas of the first light-emitting surface 31 and the second light-emitting surface 33 and the reflection area of the total reflection surface 32 are increased, so that the light-emitting cavity 30 fully refracts and reflects the light, and the light is uniformly emitted to one side of the light-emitting cavity 30. The light can pass through the first light emitting surface 31 and the second light emitting surface 33 and be emitted along the axial direction of the lens main body 10, and the total reflection surface 32 is obliquely arranged to reflect the light to two sides of the sidewall of the lens main body 10, so that the side of the lens main body 10 emits light, and the light emitting angle is large. The lens with the side light-emitting function has a large light-emitting angle, uniform illuminating light and soft light.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. A lens with a side-emitting function, characterized in that: the lens with the side light-emitting function comprises a lens body, a light inlet cavity and a light outlet cavity, wherein the light inlet cavity is arranged at one end head of the lens body and used for accommodating an LED, the light outlet cavity is arranged at the other end head of the lens body, the light inlet cavity and the light outlet cavity are arranged along the axial direction of the lens body, the positions of the light inlet cavity and the light outlet cavity correspond to each other, the light inlet cavity comprises a light inlet cavity body, a light inlet surface is arranged at one end, close to the light outlet cavity, of the light inlet cavity body, the light outlet cavity comprises a first light outlet surface, a total reflection surface surrounds the first light outlet surface, and a second light outlet surface surrounds the edge of the total reflection surface, the total reflection surfaces are obliquely arranged, and the diameters of the light outlet cavity from one end, close to the light inlet cavity, to the other end, far away from the light inlet cavity, increase gradually, on the section along the central axis of the lens body, the outer contour of the light-emitting cavity is in a U shape, and the connection positions among the first light-emitting surface, the total reflection surface and the second light-emitting surface are all in an arc shape so as to increase the light-emitting areas of the first light-emitting surface, the total reflection surface and the second light-emitting surface.

2. The lens having a side light emitting function according to claim 1, wherein: the lens body is made of polymethyl methacrylate.

3. The lens having a side light emitting function according to claim 1, wherein: the two side edges of the lens body are arc-shaped on the section along the central axis of the lens body.

4. The lens having a side light emitting function according to claim 1, wherein: the light inlet cavity body sequentially comprises a first cavity and a second cavity.

5. The lens having a side light emitting function according to claim 4, wherein: the first cavity is close to the light emitting cavity, and the diameter of the second cavity is larger than that of the first cavity.

6. The lens having a side light emitting function according to claim 4, wherein: on the section along the central axis of the lens body, the diameter of the first cavity is larger than that of the first light-emitting surface.

7. The lens having a side light emitting function according to claim 1, wherein: the central axis of the light inlet cavity is coincident with the central axis of the light outlet cavity.