Coretronic Corporation

Li-Lun Hu

Chuan-Te Cheng

Tao-Hung Kuo

Ching-Chuan Wei

Meng-Feng Chung

A zoom projection lens with eleven lens elements is provided. The zoom projection lens sequentially includes a first lens group, a second lens group, a third lens group, an aperture stop, a fourth lens group and a fifth lens group along an optical axis from a screen side to an image source side. The first lens group has a negative refractive power and includes three lens elements. The second lens group has a positive refractive power and includes one lens element. The third lens group has a positive refractive power and includes one lens element. The fourth lens group has a negative refractive power and includes four lens elements. The fifth lens group has a positive refractive power and includes two lens elements. A first lens element in the first lens group is an aspheric lens made of plastic.

Growing community of inventors

Hsin-Chu, Taiwan

Li-Lun Hu