G - Physics – 09 – F
Patent
G - Physics
09
F
345/8, 313/35.34
G09F 9/35 (2006.01) G02F 1/133 (2006.01) G02F 1/1341 (2006.01) H01J 29/89 (2006.01)
Patent
CA 1204811
ELECTRON BEAM ADDRESSED LIQUID CRYSTAL LIGHT VALVE AND METHOD FOR CONSTRUCTION THEREOF ABSTRACT An electron beam addressed liquid crystal light valve and method for construction. A twisted nematic liquid crystal cell comprises nematic liquid crystal material sandwiched between a transparent faceplate having a transparent electrode, and a transparent, dielectric target plate. A writing gun directs electrons at the target plate for writing thereon, a flood gun directs a cloud of electrons at the target for restoring the potential thereof, and a collector adjacent the target collects secondary emis- sion and free flood gun electrons, the writing gun, flood gun, and collector being disposed outside a field of view through the cell. Collector potential is slightly less than that required to produce a tar- get secondary emission ratio of 1 from flood gun elec- trons. A projection system utilizes polarizing mate- rial disposed in front of and behind the cell, and an optical system for directing light through the cell and polarizing materials. The cell is constructed by coating one side of a glass faceplate with a trans- parent electrode and forming alignment surfaces on the electrode and target plate. An inlet and an outlet through the faceplate are provided, the outlet being connected to a collection chamber. The target plate is placed over the transparent electrode, separated from the electrode by a spacer. The space within and surrounding the assembly is evacuated, after which thoroughly degassed liquid crystal material is forced by pressure through the inlet until the cell is en- tirely filled, at which point the inlet is sealed off. Thereafter, pressure on the outside of the target plate is increased until the target plate is substan- tially parallel to the faceplate, at which time the outlet tube is pinched off.
438423
Kirby Eades Gale Baker
Tektronix Inc.
LandOfFree
Electron beam addressed liquid crystal light valve and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electron beam addressed liquid crystal light valve and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron beam addressed liquid crystal light valve and... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1232207