| 摘要 |
PROBLEM TO BE SOLVED: To provide a uniform irradiation optical lens which can diffuse light of a light-emitting diode uniformly and can solve a problem that the luminance of a conventional light guide element is greatly attenuated from the center of the light emission face to the outside.SOLUTION: The uniform irradiation optical lens to be applied to a light source includes a light guide body 100 and a reflector 300. The light guide body 100 includes a side face 106, a light incident face 102, and a light emission face 104. The light incident face has a housing part 110, and the light emission face has a conical part 120. The reflector 300 is installed at the side face 106. When the light source 200 emits light, the light is refracted and transmitted to a second side wall 122 of the conical part 120 by a first side wall 112 of the housing part 110, and the light is further totally reflected by the second side wall 122. |
