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1. (WO2013123592) OPTICAL FILTER WITH LIGHT SOURCE

Pub. No.:    WO/2013/123592    International Application No.:    PCT/CA2013/000176
Publication Date: Fri Aug 30 01:59:59 CEST 2013 International Filing Date: Sat Feb 23 00:59:59 CET 2013
IPC: G02F 1/01
B60J 3/04
B60K 37/00
E06B 5/00
G02B 5/23
G02C 7/10
Applicants: SWITCH MATERIALS INC.
Inventors: BRANDA, Neil Robin
FINDEN, Jeremy Graham
LAM, Duhane
SARGENT, Jonathan Ross
SHIPPAM, Cynthia Elizabeth
WIGGIN, Douglas Malcolm
Title: OPTICAL FILTER WITH LIGHT SOURCE
Abstract:
An apparatus comprising a switchable optical filter comprising a layer of switchable material, the switchable material comprising a photochromic/thermochromic, a photochromic/photochromic, or a photochromic/electrochromic compound; a first light source providing light of a wavelength that causes the switchable material to transition from a faded state to a dark state, or a dark state to a faded state; and a switch for controlling activation of the first light source