Coherent light image generation
First Claim
Patent Images
1. A coherent light imaging arrangement comprising:
- means for generating a coherent light image, including,at least one reflective mode liquid crystal display cell having a liquid crystal layer that is sandwiched between an electroded transparent front plate and a backing plate which includes a semiconductor layer provided with a matrix array of semiconductor gates and a matrix array of reflective electrodes situated at said liquid crystal layer to define respective picture elements in the latter and individually connected to said gates to be addressed thereby, anda laser operative for directing coherent radiation on said reflective mode liquid crystal display cell; and
means for driving said generating means, includinga drive circuitry connected with said gates and operative for so processing an input video signal as to modulate the optical properties of selected ones of said picture elements in dependence on their positions by developing a selected electric field distribution between the electroded front plate and the individual electrodes of the backing plate in accordance with the information contents of said input video signal, said drive circuitry being operative for repetitively addressing each of the reflective electrodes of the matrix array via the associated gate, and, after each addressing, to close the gate for a predetermined period, and then reopen at least once to discharge a reflective electrode and reclose the gate before refreshing said reflective electrode with its next addressing with data.
3 Assignments
0 Petitions
Accused Products
Abstract
A coherent light image generator for signal processing such as image correlation directs laser light onto a specularly reflecting matrix addressed dyed nematic liquid crystal display device having a liquid crystal layer sandwiched between a transparent electroded front plate and an active single crystal silicon wafer incorporating NMOS circuitry.
27 Citations
12 Claims
-
1. A coherent light imaging arrangement comprising:
-
means for generating a coherent light image, including, at least one reflective mode liquid crystal display cell having a liquid crystal layer that is sandwiched between an electroded transparent front plate and a backing plate which includes a semiconductor layer provided with a matrix array of semiconductor gates and a matrix array of reflective electrodes situated at said liquid crystal layer to define respective picture elements in the latter and individually connected to said gates to be addressed thereby, and a laser operative for directing coherent radiation on said reflective mode liquid crystal display cell; and means for driving said generating means, including a drive circuitry connected with said gates and operative for so processing an input video signal as to modulate the optical properties of selected ones of said picture elements in dependence on their positions by developing a selected electric field distribution between the electroded front plate and the individual electrodes of the backing plate in accordance with the information contents of said input video signal, said drive circuitry being operative for repetitively addressing each of the reflective electrodes of the matrix array via the associated gate, and, after each addressing, to close the gate for a predetermined period, and then reopen at least once to discharge a reflective electrode and reclose the gate before refreshing said reflective electrode with its next addressing with data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification