Zhisheng Yun,Yee Loy Lam,Yan Zhou Nanyang Technological Univ. (Singapore) Yulin Li Xi'an Institute of Optics and Fine Mechanics (China) Zhongben L. Liu Xi'an Institute of Optics and Precision Mechanics (China) Jian Liu Nanyang Technological Univ. (Singapore)
A simple method to measure the aspherical surface of test elements by immersing them in a liquid crystal container is presented. The theory of the method is given and the experimental results of two lenses, one made of a plane surface and a spherical surface and the other with a spherical surface and an aspherical surface, are demonstrated.