A kind of LED optical concentration lens
[technical field]
The utility model relates to a kind of LED optical lens.
[background technology]
The advantages such as light-emitting diode luminous efficiency is high, power consumption is few, long service life are widely used and lighting field, but because its light sending comparatively disperses, therefore all can adopt lens to improve light-gathering.Existing optical lens structure is complicated, and light-gathering is poor.
[utility model content]
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of simple in structure, LED optical concentration lens that light-gathering is good are provided.
In order to address the above problem, the utility model by the following technical solutions:
A kind of LED optical concentration lens, comprise tapered lens body, described tapered lens body, the described little end surface of tapered lens body is provided with LED light trough, it is characterized in that: it is polygonal arc convex that described tapered lens body big end surface is provided with a plurality of bottom surfaces, the bottom surface of adjacent described arc convex adjoins each other.
A kind of LED optical concentration lens as above, is characterized in that: the diapire of described arc convex is hexagon, and described arc convex is covered with whole big end surface.
A kind of LED optical concentration lens as above, is characterized in that: described LED light trough is back taper, the axis of described LED light trough and the dead in line of tapered lens body, and described LED light trough diapire is plane.
A kind of LED optical concentration lens as above, is characterized in that: described tapered lens body is provided with the Elastic buckle upwards vertically extending from described tapered lens body stub end excircle.
A kind of LED optical concentration lens as above, it is characterized in that: described tapered lens body major part one end face is provided with the step cutting pattern that diameter is greater than tapered lens body major part one end diameter, described step cutting pattern is provided with the exiting surface step that diameter is less than step cutting pattern, and described arc convex is located on exiting surface step end face.
The beneficial effects of the utility model have: tapered lens body adopt a plurality of bottom surfaces be polygonal arc convex as exiting surface, the bottom surface of arc convex adjoins each other, its light-gathering is good, optically focused angle is probably in 30 about degree.
[accompanying drawing explanation]
Fig. 1 is stereogram of the present utility model;
Fig. 2 is upward view of the present utility model;
Fig. 3 is front view of the present utility model;
Fig. 4 is main cutaway view of the present utility model;
Fig. 5 is light distribution analogous diagram of the present utility model.
[specific embodiment]
Below in conjunction with accompanying drawing and the specific embodiment, the utility model is described in further detail:
As shown in Figures 1 to 5, a kind of LED optical concentration lens, comprise tapered lens body 1, tapered lens body 1, the little end surface of tapered lens body 1 is provided with LED light trough 2, and LED light trough 2 is back taper, the dead in line of the axis of LED light trough 2 and tapered lens body 1, the large opening of LED light trough 2 is upper, and LED light trough 2 diapires are plane.It is polygonal arc convex 3 that tapered lens body 1 big end surface is provided with a plurality of bottom surfaces, the bottom surface of adjacent arc convex 3 adjoins each other, the diapire of arc convex 3 is hexagon, arc convex 3 is covered with whole big end surface, be similar to cellular, by arc convex 3, as light-emitting area, can provide light-gathering, the lighting angle of light is probably 30 ° of left and right.Tapered lens body 1 major part one end face is provided with the step cutting pattern 11 that diameter is greater than tapered lens body 1 major part one end diameter, step cutting pattern 11 is provided with the exiting surface step 12 that diameter is less than step cutting pattern 11, arc convex 3 is located on exiting surface step 12 end faces, by two steps are set, make lens easy for installation, elegant in appearance.Tapered lens body 1 is provided with the Elastic buckle 4 upwards vertically extending from tapered lens body 1 stub end excircle, by Elastic buckle 4, tapered lens body 1 is snapped onto in shell.This optical lens structure is simple, and light-gathering is good, and its optically focused angle is probably 30 ° of left and right, and optically focused light is even.