New application of liquid crystal lens of active polarized filter for micro camera

Liquid-crystal (LC) lens with low-voltage (3.5V) driving is reported with the experimental results of lens power, wavefront aberration, storage test and also the imaging test. Optical quality can be estimated by interference pattern under two polarizer plates set with the crossed Nichol position, and the optical quality is certified by the measurement of wavefront aberration. Durable stability of over 1000 hours under continuous driving in high temperature (85°C) environment is also verified and obtained less-damaged interference patterns. Finally a new application of active polarized filter for micro camera with focus control function is reported with sufficient quality of images.