CN216952672U

CN216952672U - Novel annular light-diffusing sawtooth optical structure and manufacturing mold thereof

Info

Publication number: CN216952672U
Application number: CN202220340692.4U
Authority: CN
Inventors: 施并沛
Original assignee: Guangdong Rida Lighting Co ltd
Current assignee: Guangdong Rida Lighting Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-07-12
Anticipated expiration: 2032-02-21

Abstract

The utility model discloses a novel sawtooth optical structure for annular diffused light, which comprises a light transmitting plate main body, wherein a plurality of annular bulges are arranged on the surface of the light transmitting plate main body, the cross sections of the annular bulges are arranged in a sawtooth shape, outer optical surfaces which are inclined downwards from inside to outside are arranged on the outer sides of the annular bulges, and inner optical surfaces which are inclined downwards from outside to inside are arranged on the inner sides of the annular bulges. The annular light diffusion sawtooth optical structure is simple in structure, the inclined angle of the inner optical surface is adjusted according to the diffusion degree of light required in practice, the larger the inclined angle is, the larger the diffusion angle formed by emergent light is, and on the contrary, the smaller the diffusion angle is; the cross sections of the annular protrusions can be equal or unequal, a good light diffusion angle effect can be achieved, meanwhile, compared with the traditional bead surface microstructure, the light emitting efficiency is higher, formed residual light is less, waste and glare of light energy are reduced, and the LED light source can be used for a light emitting surface and a light incident surface.

Description

Novel annular light-diffusing sawtooth optical structure and manufacturing mold thereof

Technical Field

The utility model relates to the technical field of lamps, in particular to a novel annular light-diffusing sawtooth optical structure and a manufacturing mold thereof.

Background

The LED lighting device is generally used at present, and for the characteristics of LED light emission, an optical lens or a reflective cup is generally required to be added on the LED to perform secondary light distribution, so as to achieve a good lighting effect. Most of conventional TIR lenses or light mixing sheet lenses on the market at present use a spherical bead surface microstructure arranged on a light-emitting surface to achieve the purpose of light homogenizing (light mixing) or light-emitting angle expansion, and the disadvantage of the bead surface as a diffusion microstructure is that when a larger light diffusion angle needs to be achieved, the radius of the spherical bead surface needs to be very small, otherwise the diffusion angle cannot achieve a larger angle, the small radius of the bead surface can reduce the light-emitting efficiency of the lens to a greater extent and generate more residual light on the periphery of a main light spot after light-emitting, the reduction of the light-emitting efficiency of the lamp obviously does not meet the requirements of environmental protection and energy saving, the increase of the residual light can form more waste and glare of light energy, and the requirement of high-quality illumination is not met. Therefore, there is a need for improvements in the prior art to avoid the disadvantages of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a novel sawtooth optical structure for annular diffused light, which has a large light diffusion angle and high light extraction efficiency.

Another object of the present invention is to provide a mold for manufacturing a novel sawtooth optical structure for circularly diffusing light.

The utility model is realized by the following technical scheme:

the utility model provides a novel sawtooth optical structure of annular diffusion light, includes the light-passing board main part, the surface of light-passing board main part is equipped with a plurality of annular archs, the bellied transversal cockscomb structure setting of personally submitting of annular, the bellied outside of annular is equipped with the outer optical surface of from interior to exterior downward sloping, the bellied inboard of annular is equipped with the interior optical surface of from exterior to interior downward sloping.

Further, the annular bulges are sequentially connected in an inner-outer mode.

Further, the outer optical surface is perpendicular to the surface of the light-transmitting plate body.

Further, the top of the annular bulge is rounded.

Further, the cross sections of the annular protrusions are the same.

A manufacturing mold having a shape suitable for manufacturing a novel sawtooth optical structure by molding a mold.

Compared with the prior art, the surface of the light-transmitting plate main body is provided with the annular protrusions, the cross sections of the annular protrusions are arranged in a zigzag manner, the outer sides of the annular protrusions are provided with outer optical surfaces which incline downwards from inside to outside, the inner sides of the annular protrusions are provided with inner optical surfaces which incline downwards from outside to inside, the cross section of each sawtooth is symmetrical about the center, the sawteeth rotate around the central axis by 360 degrees to form a sawtooth optical structure for annular diffused light, the inclination angle of each inner optical surface is adjusted according to the diffusion degree of light actually required according to the rotational symmetry relation, the larger the inclination angle is, the larger the diffusion angle formed by emitted light is, and the smaller the diffusion angle is otherwise; the cross sections of the annular protrusions can be equal or unequal, a good light diffusion angle effect can be achieved, meanwhile, the light extraction efficiency is higher than that of a traditional bead surface microstructure, formed residual light is less, and waste and glare of light energy are reduced. The annular light-diffusing sawtooth optical structure can be applied to a light-mixing sheet lens, and the novel sawtooth optical structure can be used as a light-emitting surface, a light-entering surface and a light-emitting surface of a TIR lens.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a novel sawtooth optical structure for annular light diffusion according to the present invention;

FIG. 2 is a schematic longitudinal cross-sectional view of a novel sawtooth optical structure for annular light diffusion according to the present invention;

fig. 3 is an enlarged view of a portion a of fig. 2.

In the figure: 1-a light-transmitting plate body; 2-an annular projection; 3-an outer optical surface; 4-inner optical surface; 5-round corner.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, the novel sawtooth optical structure of annular diffused light of the present invention includes a light transmission plate main body 1, a plurality of annular protrusions 2 are disposed on a surface of the light transmission plate main body 1, cross sections of the annular protrusions 2 are arranged in a sawtooth shape, an outer optical surface 3 inclined downward from inside to outside is disposed on an outer side of the annular protrusions 2, and an inner optical surface 4 inclined downward from outside to inside is disposed on an inner side of the annular protrusions 2. The surface of the light transmission plate main body 1 is provided with a plurality of annular protrusions 2, the cross sections of the annular protrusions 2 are arranged in a zigzag manner, the outer sides of the annular protrusions 2 are provided with outer optical surfaces 3 which are inclined downwards from inside to outside, the inner sides of the annular protrusions 3 are provided with inner optical surfaces 4 which are inclined downwards from outside to inside, the cross section of each sawtooth is symmetrical about the center, the sawtooth rotates 360 degrees around the central axis to form a sawtooth optical structure for annular diffused light, the inclination angle of each inner optical surface 3 is adjusted according to the diffusion degree of light to the actual requirement according to the rotational symmetry relation, the larger the inclination angle is, the larger the diffusion angle formed by the emitted light is, and the smaller the diffusion angle is otherwise; the cross sections of the annular protrusions 2 can be equal or unequal, a good light diffusion angle effect can be achieved, meanwhile, the light extraction efficiency is higher than that of a traditional bead surface microstructure, formed residual light is less, and waste and glare of light energy are reduced. The annular light-diffusing sawtooth optical structure can be applied to a light-mixing sheet lens, and the novel sawtooth optical structure can be used as a light emergent surface, a light incident surface and a light emergent surface of a TIR lens.

The annular bulges 2 are sequentially connected internally and externally, so that the effect of the angle of diffused light is improved.

The outer optical surface 3 is perpendicular to the surface of the light transmission plate main body 1, and the light diffusion area of the inner optical surface 3 is increased.

The top of annular protrusion 2 is chamfered with fillet 5, makes things convenient for annular protrusion 2 to process, makes the light diffusion transition even simultaneously.

As a specific embodiment, the cross sections of the annular protrusions 2 are the same, so that the light diffusion is more uniform, and in specific embodiments, the cross sections of the annular protrusions 2 may be different.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.

Claims

1. A novel sawtooth optical structure of annular diffusion light is characterized in that: including the light-passing board main part, the surface of light-passing board main part is equipped with a plurality of annular arch, the bellied transversal cockscomb structure setting of personally submitting of annular, the bellied outside of annular is equipped with the outer optical surface of from interior to exterior downward sloping, the bellied inboard of annular is equipped with the interior optical surface of from exterior to interior downward sloping.

2. The novel ring-shaped light-diffusing sawtooth optical structure of claim 1, wherein: the annular bulges are sequentially connected with each other.

3. The novel ring-shaped light-diffusing sawtooth optical structure of claim 1, wherein: the outer optical surface is perpendicular to the surface of the light-transmitting plate main body.

4. The novel ring-shaped light-diffusing sawtooth optical structure of claim 1, wherein: the top of the annular bulge is rounded.

5. The novel ring-shaped light-diffusing sawtooth optical structure of claim 1, wherein: the cross sections of the annular bulges are the same.

6. A manufacturing mold, characterized in that: it has a shape suitable for manufacturing the novel saw tooth optical structure according to any one of claims 1 to 5 by molding.