CN201000488Y

CN201000488Y - High power LED lens

Info

Publication number: CN201000488Y
Application number: CNU2007200471344U
Authority: CN
Inventors: 李博
Original assignee: DONGGUAN HONGLEIDA ELECTRONIC AND PLASTIC Co Ltd
Current assignee: Guangdong Hongleida Optoelectric Technology Co., Ltd.
Priority date: 2007-01-05
Filing date: 2007-01-05
Publication date: 2008-01-02
Anticipated expiration: 2017-01-05

Abstract

The utility model relates to a lens technical field, in particular to a high-power LED lens, which comprises a lens main body, the lens main body is a round table shaped cup body, a concave part is molded on the lower part of the lens main body, the top part of the concave part is a lower spherical surface concave towards the concave part, the top part of the lens main body is concave downwards, the relative position of the top part of the lens main body and the lower spherical surface is an convex spherical surface, and the upper spherical surface is convex towards the lens main body; the outer surface of the lens main body is composed of a plurality of spherical surfaces with different curvature; the inside surface of the upper spherical surface connecting with the top part of the lens main body is composed of a plurality of spherical surfaces with different curvature. The utility model has the advantages that the multi spherical surface design adopted by the utility model makes the light from the high-power LED positioned in the concave part emerge within the required angle, and the emerged light spot can achieve the even effect.

Description

High-power LED lens

Technical field:

The utility model relates to lens technologies field, particularly high-power LED lens.

Background technology:

Continuous development along with science and technology, high-power, high-brightness LED has been widely used in the daily life as light source, as cup lamp, shot-light, auto lamp or the like, in use, the focused beam that the bright dipping of requirement LED has definite shape, such focused beam must dispose custom-designed optical lens at light-emitting window and could form.The existing lens that are used for great power LED, general glass or the highly hard transparent resins material of adopting, and they, incidence surface and exiting surface generally adopt smooth flat or smooth surface, they are all undesirable to rising angle and the hot spot uniformity coefficient of LED.

The utility model content:

The purpose of this utility model is to provide high-power LED lens at the deficiencies in the prior art, satisfies the rising angle of LED and the requirement of hot spot uniformity coefficient.

For achieving the above object, the utility model adopts following technical scheme:

It comprises lens body, lens body is the truncated cone-shaped cup, the bottom of lens body forms inner fovea part, the top of inner fovea part is the lower peripheral surface of inside recess convex, the lens body top is recessed, and the top of lens body and lower peripheral surface relative position are the last sphere of evagination, and last sphere is towards lens body top evagination.

The lateral surface of described lens body is made of the different sphere of a plurality of curvature.

The described sphere of going up is made of the different sphere of a plurality of curvature with the medial surface that the lens body top connects.

The beneficial effects of the utility model are: adopted above-mentioned many spheres design, make be positioned over inner fovea part the light that sends of great power LED, can outgoing in required angle, and the hot spot of outgoing can reach effect of uniform.

Description of drawings:

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 is a cross-sectional schematic of the present utility model;

Fig. 2 is a perspective view of the present utility model.

Embodiment:

See accompanying drawing 1,2, the utility model comprises lens body 10, and lens body 10 is the truncated cone-shaped cup, and the exit end diameter is big on the lens body 10, lower diameter is less; The bottom of lens body 10 forms inner fovea part 12, and inner fovea part 12 internal fixation are placed great power LED; The top of inner fovea part 12 is the lower peripheral surface 14 of inside recess 12 convexes, lens body 10 tops are recessed, and the top of lens body 10 and lower peripheral surface 14 relative positions are the last sphere 16 of evagination, last sphere 16 is towards lens body 10 top evaginations, to lens body 10 tops, can find out that from cut-open view last sphere 16 and lower peripheral surface 14 constitute convex lens structures.

The lateral surface 18 of described lens body 10 is made of the different sphere of a plurality of curvature, and promptly lateral surface 18 is not common linear plane, sphere that neither be single.

The described sphere 16 of going up is made of the different sphere of a plurality of curvature with the medial surface 20 that lens body 10 tops connect, and medial surface 20 is the same with lateral surface 18, neither common linear plane, sphere that neither be single.

Inner fovea part 12 fixed placement great power LEDs, when LED was luminous, its light can be known by the optical principle of convex lens mainly through lower peripheral surface 14 incidents and go up sphere 16 outgoing, can form uniform hot spot by the light of last sphere 16 outgoing; The side light that LED sends can increase the shooting angle of LED light effectively through lateral surface 18 reflections, medial surface 20 outgoing, also can guarantee by the light of medial surface 20 outgoing very even simultaneously.

Claims

1, high-power LED lens, it comprises lens body (10), lens body (10) is the truncated cone-shaped cup, the bottom of lens body (10) forms inner fovea part (12), it is characterized in that: the top of inner fovea part (12) is the lower peripheral surface (14) of inside recess (12) convex, lens body (10) top is recessed, and the top of lens body (10) and lower peripheral surface (14) relative position be the last sphere (16) of evagination, and last sphere (16) is towards lens body (10) top evagination.

2, high-power LED lens according to claim 1 is characterized in that: the lateral surface (18) of lens body (10) is made of the different sphere of a plurality of curvature.

3, high-power LED lens according to claim 1 and 2 is characterized in that: go up sphere (16) and be made of the different sphere of a plurality of curvature with the medial surface (20) that lens body (10) top connects.