1
Alexander D Jacobson, Jan Grinberg, Donald E Sprotbery, Donald D Boswell: High brightness full color image light valve projection system. Hughes Aircraft Company, Donald C Keaveney, W H MacAllister, November 28, 1978: US04127322 (188 worldwide citation)

There is disclosed an electro-optical system for real time projection of very high brightness, full color pictorial images from television or other program sources onto a large display screen from a set of three reflection type AC driven field effect mode birefringent liquid crystal light valves eac ...


2
Michael K Barnoski, Howard R Friedrich, Robert J Morrison: Fiber optics access coupler. Hughes Aircraft Company, Donald C Keaveney, W H MacAllister, October 18, 1977: US04054366 (75 worldwide citation)

There is disclosed a fiber optic coupler for use in single strand fiber systems comprising a device to allow optical access to a single fiber by means of a second fiber which has been attached to it by fusing the glass cladding of the two fibers as by application of heat by a laser. The resulting ac ...


3
Jan Grinberg, Leroy J Miller: Circularly polarized light source. Hughes Aircraft Company, Donald C Keaveney, W H MacAllister, February 14, 1978: US04073571 (59 worldwide citation)

There is disclosed a circularly polarized light source including a circular light polarizer using cholesteric liquid crystal material in an arrangement such that substantially 100% of the unpolarized light input may be utilized in a circularly polarized output in either a narrow band or wide band co ...


4
Donald D Boswell, Jan Grinberg, Alexander D Jacobson, Gary D Myer: Reflective liquid crystal light valve with hybrid field effect mode. Hughes Aircraft Company, Donald C Keaveney, W H MacAllister, April 26, 1977: US04019807 (57 worldwide citation)

There is disclosed a high performance reflective mode liquid crystal light valve suitable for general image processing and projection and particularly suited for application to real-time coherent optical data processing. A preferred example of the device uses a CdS photoconductor, a CdTe light absor ...


5
Stephen C Su, Ronald M Finnila: Bucket background subtraction circuit for charge-coupled devices. Hughes Aircraft Company, Donald C Keaveney, W H MacAllister, July 13, 1976: US03969634 (38 worldwide citation)

There is disclosed a circuit for removing the DC or background representing charge component of a signal to be passed through a charge coupled device shift register without degrading the information carried by the AC component of the signal. Such a circuit may, for example, be used to remove the con ...


6
Jan Grinberg, Emanuel Marom: Optical subtraction of images in real time. Hughes Aircraft Company, Donald C Keaveney, W H MacAllister, November 7, 1978: US04124278 (37 worldwide citation)

There is disclosed a system capable of subtracting in real time the intensities of two incoherently illuminated scenes and providing the sign of the subtracted information. The system utilizes two birefringent devices such as liquid crystal light valves, onto which the two images to be subtracted ar ...


7
Lewis M Fraas, William P Bleha Jr: Charge storage diode with graded defect density photocapacitive layer. Hughes Aircraft Company, Donald C Keaveney, W H MacAllister, August 24, 1976: US03976361 (30 worldwide citation)

In a light actuated device such as an alternating current driven light valve or other display device requiring the photocapacitance of a light responsive layer in a photodiode to be modulated in response to changes in incident or writing light, sensitivity is an important factor, especially when a c ...


8
Gary R Noyes: Long-wave infrared afocal zoom telescope. Hughes Aircraft Company, W H MacAllister, Donald C Keaveney, March 30, 1976: US03947084 (29 worldwide citation)

There is disclosed an afocal zoom lens attachment of variable magnification which is intended for use with a prime imaging lens of fixed focal length and which is particularly suited for systems using radiation having a wavelength in the infrared region of the spectrum. The attachable zoom lens syst ...


9
Jan Grinberg, Lewis M Fraas, William P Bleha Jr, Paul O Braatz: Silicon single crystal charge storage diode. Hughes Aircraft Company, Donald C Keaveney, W H MacAllister, June 28, 1977: US04032954 (27 worldwide citation)

There is disclosed a silver doped silicon single crystal charge storage photodiode substrate suitable for use in an alternating current driven liquid crystal light valve. The gain capability of the charge storage photodiode makes it possible to construct a single crystal substrate ac light valve ver ...


10
William P Bleha Jr, Jan Grinberg: Visible-to-infrared converter light valve. Hughes Aircraft Company, Donald C Keaveney, W H MacAllister, September 19, 1978: US04114991 (26 worldwide citation)

There is disclosed a reflective type liquid crystal light valve means for converting a visible wavelength dynamic image to an infrared wavelength dynamic image. The device employs an infrared reflecting and visible transmitting indium-tin-oxide film which is external to the liquid crystal layer and ...