G - Physics
02
F
G02F 1/21 (2006.01) G02B 5/24 (2006.01) G02F 1/141 (2006.01)
Patent
CA 2161633
An electrically-controllable liquid crystal filter device comprises two partially-reflecting substrate structures (1 and 2) mounted substantially parallel to each other with a space therebetween to form a Fabry-Perot filter. A layer of ferroelectric liquid crystal material (10) is disposed in the space, the liq- uid crystal material (10) being switchable, by appli- cation of an electric field, between different refrac- tive index values whereby the device is switchable between transmissive and reflective states for light of a particular narrow wavelength band. The spac- ing of the substrate structures (1 and 2) is selected in relation to the wavelength of light to be transmit- ted, such that the Fabry-Perot filter operates in a low order state, which may be the first order.
Taylor Gregory Stuart
Wiltshire Michael Charles Keogh
Kirby Eades Gale Baker
Marconi Data Systems Inc.
Videojet Systems International Inc.
LandOfFree
Optical devices does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical devices will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1781844