Patent ID: 6166784
Filing Date: 2000-12-26
Classification: A61B,G02B,G02F

Abstract:
An imaging optical system comprising an optical member including a first body consisting of a substantially transparent birefringent liquid crystal member, a second body consisting of a substantially transparent birefringent liquid crystal member, and at least a pair of electrodes for adding an electric field or a magnetic field onto the first body and the second body, a rear face of the first body being aligned perpendicular to a front face of the second body, and the difference of birefringence .DELTA.n of the liquid crystal and the absolute value .vertline.R.vertline. of radius of curvature of the first body and the second body satisfy the following relation:0.005.ltoreq..DELTA.n/.vertline.R.vertline..ltoreq.0.1.