A Study of Optical Design on 9× Zoom Ratio by Using a Compensating Liquid Lens

Abstract

This paper proposes using a liquid lens as a compensating lens and applying intermediate optics to achieve a 9× zoom ratio. The droplet shape and location of the liquid lens can be adjusted reversibly, enabling the focal length and position of the lens to be tuned by varying the voltage applied to a set of electrodes. Therefore, liquid lenses can replace complex lenses to reduce the total length of optomechanical systems. The CODE V built-in optimization method was used to determine the optimal liquid lens parameters at various zoom ratios. Several general optical aberrations were considered. Compared with a standard intermediate optics system featuring 9× zoom and no compensating lens, the proposed lens improved the Petzval surface curvature (PTZ) and modulation transfer function (MTF). Simulation results revealed that the PTZ decreased 10.92% and the MTF increased 3988% in 40 1p/mm.

Active lens and mirror technology through tailored thermal expansion

“…Traditional optical systems can only alter lens distances while the here described active optics can be used to dynamically change lens shapes and hence focus and aberration correction to create the best optical image. 1 This same idea can be taken across various types of optical components that can be made active, examples of these include electrically tunable lenses, 2 and piezo stack driven deformable mirrors. 3 The application range for active optics varies from complex camera lenses to laboratory equipment for shaping wavefronts to exact specifications.…”