CN201448749U

CN201448749U - Diffusing type big power LED optical lens

Info

Publication number: CN201448749U
Application number: CN2009200591824U
Authority: CN
Inventors: 卢金树
Original assignee: GUANGDONG KINGLONG ELECTRONIC TECH Ltd
Current assignee: GUANGDONG KINGLONG ELECTRONIC TECH Ltd
Priority date: 2009-06-25
Filing date: 2009-06-25
Publication date: 2010-05-05
Anticipated expiration: 2019-06-25

Abstract

The utility model discloses a diffusing type big power LED optical lens, which comprises a lens body, wherein the top portion of the lens body is provided with an inner concave portion, the bottom portion of the lens body is provided with an inner concave sinking platform, and the top surface of the sinking platform is uniformly distributed with a plurality of small spherical surfaces. The bottom portion of the lens body is provided with an LED incident end, and the surface of a lens body semi-spherical curved surface, and a conical curved surface on the side surface of the inner concave portion on the top portion and the plane on the bottom portion of the inner concave portion are commonly formed into a refraction end of an LED. The diffusing type big power LED optical lens is applied on a big power LED backlight source, the refraction end which is formed through using multi-spherical refraction end and multi-angle multi-curved surfaces of the lens body can effectively solve the phenomenon of overhigh central light strength of the LED, increases the luminance and the evenness of an LED light source, reduces the usage amount of the LED in the design of an LED backlight module, and reduces the cost.

Description

Diffusion type great power LED optical lens

Technical field

The utility model relates to a kind of lens technologies field, particularly diffusion type great power LED optical lens.

Background technology

Great power LED as backlight have power saving, luminous efficiency height, advantages such as reaction speed is fast, shatter-proof, the color color rendering is good, the life-span is long, volume is little, environmental protection, make LED will become following main backlight, what nowadays the backlight module industry was positive imports high-power LED light source in the backlight module.But, because the luminous directive property of LED, cause the LED central light strength to spend problems such as height, briliancy and the uniformity are low, and the briliancy and the uniformity of improving backlight module are directly proportional with the consumption of LED, the LED consumption improves, the uniformity is with regard to corresponding improve, but heat radiation also can relatedly increase with the cost problem.LED generally uses optical lens to carry out leaded light, is applied to the optical lens of backlight LED at present, exists the diffusivity effect undesirable, and defective such as briliancy, the uniformity are undesirable can not satisfy the requirement in LED-backlit source.

The utility model content

It is undesirable that the purpose of this utility model is to overcome existing optical lens diffusivity effect, and defective such as briliancy, the uniformity are undesirable provides a kind of diffusion type great power LED optical lens.

For achieving the above object, the utility model is achieved through the following technical solutions:

The utility model diffusion type great power LED optical lens comprises lens body, and the top of lens body is provided with inner fovea part, and the bottom of described lens body is provided with the indent heavy stand, and the end face of described heavy stand is a plurality of little spheres of distribution evenly.

The upper surface of described lens body is hemispherical curved surface.

The medial surface of described inner fovea part is coniform curved surface, and the bottom of inner fovea part is the plane.

The end face of described heavy stand is the different little sphere of a plurality of curvature of distribution evenly.

The bottom of described lens body is a LED incident end, and LED refraction end is formed on the plane of the coniform curved surface of the upper surface of the hemispherical curved surface of lens body, inner fovea part side, top and inner fovea part bottom jointly.

The utlity model has following beneficial effect is: the refraction end that the many curved surfaces of many spheres incident end of described lens body and multi-angle form, efficiently solve the LED central light strength and spend high phenomenon, in the LED-backlit modular design, can reduce the use amount of LED by this, reduce cost, also help to improve simultaneously the briliancy and the uniformity of led light source.

Description of drawings

Describe embodiment of the present utility model in detail below in conjunction with the drawings and specific embodiments.

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

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

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Referring to Fig. 1 and Fig. 2, the utility model diffusion type great power LED optical lens comprises lens body 7, lens body 7 is a dome lens, the top is an inner fovea part 2, inner fovea part 2 upper diameter are big, lower diameter is less, the medial surface 4 of inner fovea part 2 is coniform curved surface, inner fovea part 2 bottoms are that 5. described lens body, 7 bottoms, plane are the indent heavy stand, fixed placement great power LED in the heavy stand, heavy stand end face 6 is the different little spheres of equally distributed a plurality of curvature, the little sphere that described a plurality of curvature is different promptly is not common linear plane, sphere that neither be single.

Described lens body 7 bottoms are LED incident end 1, and described lens body 7 surfaces are the coniform curved surface 4 of hemispherical curved surface, top inner fovea part 2 sides and the plane 5 common LED of the composition refraction ends 3 of inner fovea part bottom.

Novel diffusion type LED optical lens described in the utility model adopts above-mentioned special distribution curve flux design, the emergent light of led light source is injected incident end 1, enter refraction end 3 again, in refraction end 3 diffusions of finishing emergent light, spend high phenomenon with effective solution LED central light strength, reduce the use amount of LED by this in the LED-backlit modular design, reduce cost, also help the lifting of the briliancy and the uniformity, can satisfy the requirement of LED-backlit source design and installation standard.

The utility model is not limited to the above-mentioned specific embodiment, and all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, and all are contained in the utility model patent claim.The utility model can design other embodiments in conjunction with concrete applicable cases according to described technical scheme.

Claims

1. a diffusion type great power LED optical lens comprises lens body, and it is characterized in that: the top of described lens body is provided with inner fovea part, and the bottom of described lens body is provided with the indent heavy stand, and the end face of described heavy stand is a plurality of little spheres of distribution evenly.

2. diffusion type great power LED optical lens according to claim 1 is characterized in that: the upper surface of described lens body is hemispherical curved surface.

3. diffusion type great power LED optical lens according to claim 1 is characterized in that: the medial surface of described inner fovea part is coniform curved surface, and the bottom of inner fovea part is the plane.

4. diffusion type great power LED optical lens according to claim 1 is characterized in that: the end face of described heavy stand is the different little sphere of a plurality of curvature of distribution evenly.