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1. 发明申请

WO1988007701A1 LIGHT VALVE SYSTEM AND METHOD WITH PULSED READOUT 审中-公开
标题翻译：具有脉冲读数的光阀系统和方法
公开(公告)号：WO1988007701A1
公开(公告)日：1988-10-06
申请号：PCT/US1988000471
申请日：1988-02-16
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , LITTLE, Michael, J. , EFRON, Uzi , BRAATZ, Paul, O. , SCHWARTZ, Robert, N. , OWECHKO, Yuri , WELKOWSKY, Murray, S.
IPC分类号： G02F01/135
CPC分类号： G02F1/133348 , G02F1/135
摘要： A pulsed readout technique is described for liquid crystal light valves which eliminates the problem of readout beam leakage through the light valve mirror. The readout beam is pulsed on only when the light valve's semiconductor layer is out of a depletion state. This can occur during an accumulation state or, in certain applications, during a specially inserted quiescent period in the light valve voltage cycle. The invention is applicable to light valves with various types of modulating inputs, and can be used with either dielectric or metal matrix mirrors.

2. 发明申请

WO1984003176A1 SELF-COMPENSATING HYDROSTATIC FLATTENING OF SEMICONDUCTOR SUBSTRATES 审中-公开
标题翻译：自我补偿半导体衬底的静电弛豫
公开(公告)号：WO1984003176A1
公开(公告)日：1984-08-16
申请号：PCT/US1983001989
申请日：1983-12-16
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , LITTLE, Michael, J. , BROWN, Roger, H. , EFRON, Uzi , HOBERG, Clarence, P.
IPC分类号： H01L31/02
CPC分类号： H01L21/0201 , G01B11/26 , H01L31/0203
摘要： A semiconductive substrate (1), such as a silicon wafer, is mounted on a baseplate (3), for inclusion in an optical device such as a liquid crystal light valve. An optical flat (9) presses the top surface of the silicon wafer toward the baseplate and against a ring seal (5) surrounding a fluid adhesive (7). The fluid adhesive hydrostatically distributes the force of compression to guarantee optical flatness and self-compensation for the amount fluid adhesive surrounded by the O-ring. The optical flatness of the semiconductor substrate is limited only by the flatness of the optical flat against which it is compressed. Parallel alignment of the optical flat (9), the substrate (1) and the baseplate (3) is achieved by reflecting a laser beam (20) through the semiconductive substrate and observing the interference fringes therein, while adjusting the relative alignment so as to maximize the distance between fringes.
摘要翻译：诸如硅晶片的半导体基板安装在基板上以包含在诸如液晶光阀的光学装置中。光学平面将硅晶片的顶表面压向底板并且抵靠围绕流体粘合剂的O形圈密封件。流体粘合剂可以流体分配压缩力，以保证由O形环包围的流体粘合剂的光学平面度和自我补偿。半导体衬底的光学平面度仅受到被压缩的光学平面的平坦度的限制。通过将激光束反射通过半导体基片并观察其中的干涉条纹，同时调整相对对准以使条纹之间的距离最大化，来实现光学平面，基底和基板的平行对准。

3. 发明申请

WO1989012249A2 OPTICAL LIGHT VALVE SYSTEM FOR PROVIDING PHASE CONJUGATED BEAM OF CONTROLLABLE INTENSITY 审中-公开
标题翻译：光控阀系统，用于提供可控强度的相控束
公开(公告)号：WO1989012249A2
公开(公告)日：1989-12-14
申请号：PCT/US1989001686
申请日：1989-04-24
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , EFRON, Uzi , OWECHKO, Yuri
IPC分类号： G02F01/35
CPC分类号： G02F1/3538 , G02F1/135
摘要： An optical light valve system (10) for providing an amplified phase conjugated replica (S1*) of a potentially low intensity phase aberrated optical signal beam (S1) is disclosed herein. The optical light valve system (10) of the present invention includes a reference beam source (17) for providing a coherent reference beam (R) having first and second components of first and second polarization states, respectively. Further included is a signal beam source (15) for providing a coherent signal beam (S) of the first polarization state. An improved optical light valve (20) phase conjugates the second component of the reference beam in response to the aberrated beam (S1*).

4. 发明申请

WO1989001174A1 SILICON-ON-SAPPHIRE LIQUID CRYSTAL LIGHT VALVE AND METHOD 审中-公开
标题翻译： SILICON-ON-SAPPHIRE液晶水晶灯和方法
公开(公告)号：WO1989001174A1
公开(公告)日：1989-02-09
申请号：PCT/US1988002034
申请日：1988-06-16
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , EFRON, Uzi , BRAATZ, Paul, O. , VASUDEV, Prahalad, K. , ROBERTSON, Glenn, D.
IPC分类号： G02F01/135
CPC分类号： G02F1/1354
摘要： An LCLV is formed with a sapphire substrate (20) base, a highly doped, thin silicon epitaxial layer (2) forming an ohmic back contact on a smooth surface of the sapphire substrate, and a lightly doped, high resistivity silicon epitaxial layer (4) in the range of about 20-60 microns thick on the back contact. The use of a sapphire substrate provides a better surface quality and higher resolution than previously available with the semiconductor substrates. Lattice defects in the thin back contact are reduced by the formation of a buried amorphous layer adjacent the sapphire substrate, and subsequent recrystallization thereof using the unamorphized portions of the back contact as recrystallization seeds. The application of the invention to both MOS and Schottky diode LCLVs is discussed.

5. 发明申请

WO1988005555A1 NIPI REFRACTIVE INDEX MODULATION APPARATUS AND METHOD 审中-公开
标题翻译： NIPI折射率调制装置和方法
公开(公告)号：WO1988005555A1
公开(公告)日：1988-07-28
申请号：PCT/US1987003304
申请日：1987-12-14
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , SCHULMAN, Joel, N. , EFRON, Uzi
IPC分类号： G02F01/015
CPC分类号： G02F1/017 , B82Y20/00 , G02F1/01716 , G02F2001/0151
摘要： Various optical modulation systems and methods which are based upon modulating the refractive index of a nipi structure. The refractive index modulation is accomplished by applying a controlled voltage differential across the n-doped and p-doped layers of the structure. Staggered contacts to the layers are formed by conductive elements which extend through the structure. One of the elements establishes ohmic contacts with the n layers, and the other with the players. When implemented as an optical spatial phase modulator, one of the nipi contacts is provided as a grid which divides the structure into a matrix of pixel elements, with the other contact comprising separate wires extending through each pixel. A spatial voltage pattern is applied to the pixel wires to inject charge into their corresponding layers, and thereby modulate the refractive indices of the pixels. This imposes a desired spatial phase modulation onto a readout beam transmitted through the nipi structure. Various guided wave applications are also disclosed in which a beam is transmitted through a nipi structure parallel to the n and p layers. The nipi structure is not divided into pixels, but rather has a common voltage differential between its n and p layers. The structure's refractive index is spatially modulated by varying this voltage differential, whereby the spatial voltage modulation is transferred onto the beam.

6. 发明申请

WO1988000358A2 NEAR BANDGAP RADIATION MODULATION SPATIAL LIGHT MODULATORS 审中-公开
标题翻译：近距离辐射调制空调光调制器
公开(公告)号：WO1988000358A2
公开(公告)日：1988-01-14
申请号：PCT/US1987001193
申请日：1987-05-26
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , EFRON, Uzi , GRINBERG, Jan
IPC分类号： G02F01/015
CPC分类号： B82Y20/00 , G02F1/0126 , G02F1/017 , G02F1/01716 , G02F2203/12
摘要： A near bandgap radiation modulation spatial light modulator (NBRM-SLM) using multiple quantum wells (MQWs) (34). Generally, the MQW NBRM SLM of the present invention comprises a MQW optical modulator (34) and driver means for driving the MQW optical modulator. The MQW NBRM SLMs of the present invention can be configured in a plurality of configurations. The driver and MQW optical modulator may be configured in hybrid or monolithic configurations. The MQW optical modulator can be operated in either transverse or longitudinal electric field modes. The MQW NBRM SLM structures can be operated using either electroabsorption or electrorefraction effects, and in transmissive or reflective modes. The structures are operable with different addressing and write-in mechanisms, including photo-activation and electronic addressing. Alternate embodiments have special features such as cascaded heterojunction MQWs and pixelized submicron metal mirror. The disclosed invention provides an improved, high speed, high resolution, semiconductor drive-compatible, spatial light modulator using multiple quantum wells.

7. 发明申请

WO1987000642A1 DOUBLE-SCHOTTKY DIODE LIQUID CRYSTAL LIGHT VALVE 审中-公开
标题翻译：双肖特基二极管液晶灯
公开(公告)号：WO1987000642A1
公开(公告)日：1987-01-29
申请号：PCT/US1986001394
申请日：1986-07-03
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , BRAATZ, Paul, O. , EFRON, Uzi
IPC分类号： G02F01/135
CPC分类号： G02F1/1354
摘要： 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 photoconductor (40) controls the polarization responsively to the optical content of the second beam (110). The photoconductor (40) includes a semiconductor substrate and a pair of Schottky diodes (60/40, 30/40) disposed on opposing sides of the substrate. The absorption of the second beam (110) by the substrate (40) produces photogenerated majority carriers. The pair of Schottky diodes (60/40, 30/40) maintains the substrate (40) substantially depleted of such carriers and also reflects the modulated beam back through the liquid crystal.

8. 发明申请

WO1989002613A1 SINGLE-SCHOTTKY DIODE LIQUID CRYSTAL LIGHT VALVE AND METHOD 审中-公开
标题翻译：单肖特基二极管液晶灯和方法
公开(公告)号：WO1989002613A1
公开(公告)日：1989-03-23
申请号：PCT/US1988003100
申请日：1988-08-30
申请人： HUGHES AIRCRAFT COMPANY
发明人： HUGHES AIRCRAFT COMPANY , EFRON, Uzi , BRAATZ, Paul, O. , GRINBERG, Jan
IPC分类号： G02F01/135
CPC分类号： G02F1/1354
摘要： A single-Schottky liquid crystal is disclosed in which a series of Schottky contacts are made on one side of a photoconductor substrate by a metal matrix mirror, with a doped semiconductor back contact electrode on the other side of the substrate. The light valve offers several operational advantages over MOS devices, and is easier to fabricate than double-Schottky light valves. It can be operated either in an AC mode or, by doping the liquid crystal ions, in a DC mode.
摘要翻译：公开了一种单肖特基液晶，其中通过金属矩阵反射镜在感光体基板的一侧上形成一系列肖特基接触，在基板的另一侧上具有掺杂的半导体背接触电极。光阀比MOS器件提供了几个操作优势，比双肖特基光阀更容易制造。它可以在AC模式下或通过在DC模式下掺杂液晶离子来操作。

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