Search International and National Patent Collections

1. (WO2018107296) METHOD AND APPARATUS FOR DYNAMICALLY VARIABLE ELECTRICAL CONTROL OF LIGHT BEAM REFLECTIVE LIQUID CRYSTAL DEVICES

Pub. No.:    WO/2018/107296    International Application No.:    PCT/CA2017/051518
Publication Date: Fri Jun 22 01:59:59 CEST 2018 International Filing Date: Fri Dec 15 00:59:59 CET 2017
IPC: G02B 27/18
F21S 10/00
G02B 17/00
G02B 27/09
G02F 1/13
G02F 1/29
F21V 7/05
Applicants: UNIVERSITÉ LAVAL
Inventors: GALSTIAN, Tigran
Title: METHOD AND APPARATUS FOR DYNAMICALLY VARIABLE ELECTRICAL CONTROL OF LIGHT BEAM REFLECTIVE LIQUID CRYSTAL DEVICES
Abstract:
A variable reflection mode optical device for controlling properties of reflected light is described. The device includes a light reflecting surface of an array of controllable mirror elements, a layer of dynamically controllable material and an excitation source for generating an excitation field acting on the layer of dynamically controllable material. An electrical drive signal applied to the excitation source causes a change of optical properties in the layer of dynamically controllable material to provide a spatially varying change in light reflection having at least one of a desired phase curvature and a desired amplitude modulation profile.