1
Ronald D Blum, Dwight P Duston, William Kokonaski, Joseph Thibodeau, Youval Katzman, Uzi Efron: Electro-optic lens with integrated components. E Vision, Hunton & Williams, March 29, 2005: US06871951 (65 worldwide citation)

A system in accord with the present invention includes a first optical lens having a first outer surface, a second outer surface, and an outer perimeter, an electro-active refractive matrix; and a conductor coupled to the electro-active matrix. An alternative system in accord with the present invent ...


2
Uzi Efron, Bernard H Soffer: Dual liquid-crystal cell-based visible-to-infrared dynamic image converter. Hughes Aircraft Company, V D Duraiswamy, V G Laslo, A W Karambelas, July 14, 1987: US04679910 (38 worldwide citation)

A visible to infrared dynamic image converter light valve includes two liquid crystal layers disposed on opposite sides of a photoconductive substrate. The two liquid crystal layers spatially modulate an incident infrared beam by polarization rotation. A voltage is applied across the two liquid crys ...


3
Uzi Efron, Shin Tson Wu, Tsung Yuan Hsu, Wayne Schoenmakers: Liquid crystal light valve goggles for eye protection. Hughes Aircraft Company, V D Duraiswamy, W K Denson Low, January 14, 1992: US05081542 (35 worldwide citation)

An eye protection device 10 comprising a liquid crystal light valve 20 for providing an image of a scene. The light valve images the field of view under observation in a spectral range which matches the human eye. It will automatically reject a laser threat by simply absorbing the energy therefrom i ...


4
Chungte W Chen, Uzi Efron, Arthur N Chester: Low-cost light-weight head-mounted virtual-image projection display with low moments of inertia and low center of gravity. Hughes Electronics, Leonard A Alkov, William C Schubert, Glenn H Lenzen Jr, October 13, 1998: US05822127 (34 worldwide citation)

A head-mounted display device (10) offers light weight, a low center of gravity, and low moments of inertia about the azimuthal and elevational axes of head movement. The display device (10) employs an angulated beam splitter mirror (16) disposed between a user's (22) eye (20) and an inner combiner ...


5
Ronald D Blum, Dwight P Dustin, Youval Katzman, Israel Grossinger, Uzi Efron, Dan Katzman: System, apparatus, and method for reducing birefringence. E Vision, Kenyon & Kenyon, December 10, 2002: US06491391 (30 worldwide citation)

An electro-active spectacle lens is disclosed. The disclosed lens includes a first lens optic. The disclosed lens also includes a first electro-active zone positioned in a cooperative relationship with the first lens optic. In certain embodiments, the electro-active lens includes a range finder posi ...


6
Ronald D Blum, Dwight P Duston, William Kokonaski, Joseph Thibodeau, Youval Katzman, Uzi Efron: Electro-optic lens with integrated components. PixelOptics, Peal Cohen Zedek Latzer, January 13, 2009: US07475984 (26 worldwide citation)

A system in accord with the present invention includes a first optical lens having a first outer surface, a second outer surface, and an outer perimeter, an electro-active refractive matrix; and a conductor coupled to the electro-active matrix. An alternative system in accord with the present invent ...


7
Uzi Efron, Paul O Braatz, Prahalad K Vasudev, Glenn D Robertson: Silicon-on-sapphire liquid crystal light valve and method. Hughes Aircraft Company, V D Duraiswamy, A W Karambelas, May 2, 1989: US04826300 (24 worldwide citation)

An LCLV is formed with a sapphire substrate base, a highly doped, thin silicon epitaxial layer forming an ohmic back contact on a smooth surface of the sapphire substrate, and a lightly doped, high resistivity silicon epitaxial layer in the range of about 20-60 microns thick on the back contact. The ...


8
Jan Grinberg, Raymond Balcerak, Chiung Sheng Wu, Uzi Efron, Paul O Braatz: Infrared transducer and goggles incorporating the same. Hughes Aircraft Company, The United States of America represented by the Secretary of the Defense, V D Duraiswamy, W K Denson Low, February 14, 1995: US05389788 (23 worldwide citation)

An infrared (IR) radiation transducer integrates an IR detector array with a liquid crystal (LC) readout. The IR detector is preferably a pixelized bolometer array, but other detectors such as pyroelectric materials are possible. To modulate the LC in response to detected IR radiation, a modulating ...


9
Uzi Efron, Murray S Welkowsky, Norman W Goodwin: Liquid crystal light valve with grooved microgrid and method of forming the same. Hughes Aircraft Company, V D Duraiswamy, P M Coble, W K Denson Low, April 3, 1990: US04913531 (19 worldwide citation)

A liquid crystal light valve is provided with a microgrid of grooves in the photoconductor surface to divide the photoconductor into high resolution pixels. The liquid crystals fill the grooves to seal them and contribute to a potential barrier at the grooves that prevents lateral charge migration b ...


10
Paul O Braatz, Uzi Efron: Double-schottky diode liquid crystal light valve. Hughes Aircraft Company, V D Duraiswamy, A W Karambelas, June 27, 1989: US04842376 (15 worldwide citation)

A double Schottky diode light valve (5) includes a liquid crystal (80) for locally modulating a beam (120) by polarization rotation to produce a modulated beam (121), and a photoconductor (40) located adjacent the liquid crystal (80) for receiving and absorbing a second beam (110). The photoconducto ...