Industrial Technology Research Institute

Hsuen-Chih Chang

Hung-Lieh Hu

Chen-Kun Chen

Sheng-Pan Huang

Chiu-Ling Chen

An illumination apparatus including a light-emitting unit and a lens module is described. The light-emitting unit is used for generating a light and has a light exit axis. The lens module has a light exit surface with a plurality of curved surfaces. The lens module receives the light and outputs the light from the curved surfaces. Further, the curved surfaces have at least two curvatures, each for adjusting a illumination range of the light output from the corresponding curved surface.

Growing community of inventors

Changhua, Taiwan

Hsuen-Chih Chang