Optical range-finding system using a single-image sensor with liquid crystal display aperture

Opt Lett. 2016 Nov 15;41(22):5154-5157. doi: 10.1364/OL.41.005154.

Abstract

This Letter presents an optical range-finding camera using a liquid crystal display (LCD) to generate multiple, off-axis color-filtered apertures in a flexible manner. The disparity between the different color channels is measured from a pair of stereo images acquired by two off-axis apertures, and the distance of a scene point from the camera is then estimated from the pre-specified relationship between the color disparity and distance.