G - Physics – 02 – F
Patent
G - Physics
02
F
345/56
G02F 1/01 (2006.01) G02F 1/03 (2006.01)
Patent
CA 1262180
14 ABSTRACT The invention relates to an optical relay com- prising a target of an electrically insulating material, and transmitting light in dependence on the electric field parallel to the direction of propagation of the light, means for scanning a first face of the target by means of an electron beam, an anode which collects the secondary electrons emitted by the beam, an optically transparent and electrically conducting plate arranged at the second face of the target, the target receiving the electric video information signal, thereby forming a control electrode, the target being constituted of a material which becomes ferroelectric below a certain temperature, called the Curie temperature in the proxi- mity of which the optical relay operates. The target is characterized in that, in order to keep the target at the required operating temperature the optical relay is provided with a heat exchanger which acts on the target, such that in normal operation the target is formed of a useful central area where the target exhibits a single domain ferroelectric phase and a neutral peripheral area at a temperature which is higher than the Curie tempera- ture, where the target exhibits a paraelectric phase. The optical relay is used for the production of televi- sion pictures on a large screen.
518577
Fetherstonhaugh & Co.
N.v. Philips Gloeilampenfabrieken
Polaert Remy
LandOfFree
Optical relay whose target operates ferroelectrically 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 relay whose target operates ferroelectrically, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical relay whose target operates ferroelectrically will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1305533