| 摘要 |
The present invention relates to a light diffusion lens for LED. The present invention relates to the light diffusion lens installed on the upper side of a light source to be mounted on a substrate including: a curved first light exit surface in a shape which disperses radially around a light shaft; and a plurality of plane second exit surfaces which extend from the peripheral part of the first exit surface, wherein the second exit surfaces are formed around the light shaft in a regular period. According to the present invention, the light diffusion lens makes uniform brightness distribution which is synthesized from an illumination surface by forming the brightness distribution in an irrotational symmetric form according to a two-dimensional arrangement of an LED light source based on an individual light source. |
