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    • 2. 发明授权
    • Infrared transducer and goggles incorporating the same
    • 红外线传感器和护目镜结合在一起
    • US5389788A
    • 1995-02-14
    • US166790
    • 1993-12-13
    • Jan GrinbergRaymond BalcerakChiung-Sheng WuUzi EfronPaul O. Braatz
    • Jan GrinbergRaymond BalcerakChiung-Sheng WuUzi EfronPaul O. Braatz
    • G01J5/04G01J5/20G02F1/135H01L27/146G02F1/136
    • H01L27/146G02B23/125G02F1/1354H04N5/3651H04N5/33
    • 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 section is provided that includes a charge injection structure which injects electrical charge in response to the detected IR radiation, and a charge transfer structure that transfers the injected charge to the LC readout section. During its active phase the charge transfer layer is depleted of majority charge carriers, and the charge injection and transfer mechanism operates in a manner analogous to a bipolar transistor. A visible readout is obtained by directing readout light through the LC, where it is modulated in accordance with the detected IR image. The transducers are small and light weight enough to be incorporated into a pair of goggles, for which no separate cooling is required.
    • 红外(IR)辐射传感器将IR检测器阵列与液晶(LC)读数器集成。 IR检测器优选地是像素化的测辐射热计阵列,但是其他检测器如热电材料也是可能的。 为了响应于检测到的IR辐射来调制LC,提供了调制部分,其包括响应于检测到的IR辐射而注入电荷的电荷注入结构,以及将注入的电荷传送到LC读出部分的电荷转移结构。 在其活性阶段期间,电荷转移层耗尽多数电荷载流子,并且电荷注入和转移机制以类似于双极晶体管的方式工作。 通过将读出光引导通过LC获得可见读出,其中根据检测到的IR图像进行调制。 传感器体积小巧,重量轻,可以并入一副护目镜,不需要单独的冷却。
    • 4. 发明授权
    • Double-schottky diode liquid crystal light valve
    • 双肖特基二极管液晶光阀
    • US4842376A
    • 1989-06-27
    • US758917
    • 1985-07-25
    • Paul O. BraatzUzi Efron
    • Paul O. BraatzUzi Efron
    • G02F1/135G02F1/136G02F1/1365H01L31/108H01L31/14
    • G02F1/1354
    • 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 (46) 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) maintain the substrate (40) substantially depleted of such carriers and also reflects the modulated beam back through the liquid crystal.
    • 双肖特基二极管光阀(5)包括用于通过偏振旋转来局部调制光束(120)以产生调制光束(121)的液晶(80)和位于液晶(80)附近的光电导体(40) 用于接收和吸收第二光束(110)。 光电导体(40)响应于第二光束(110)的光学内容来控制极化。 光电导体(46)包括半导体衬底和设置在衬底的相对侧上的一对肖特基二极管(60/40,30/40)。 基板(40)对第二光束(110)的吸收产生光生多数载流子。 这对肖特基二极管(60/40,30/40)保持了基本上耗尽这种载流子的衬底(40),并且还将经调制的光束反射回液晶。
    • 7. 发明授权
    • Double-Schottky diode liquid crystal light valve
    • 双肖特基二极管液晶光阀
    • US4881110A
    • 1989-11-14
    • US194352
    • 1988-05-16
    • Paul O. BraatzUzi Efron
    • Paul O. BraatzUzi Efron
    • G02F1/015G02F1/135G02F1/17
    • G02F1/1354G02F1/015G02F1/17
    • 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 (46) 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 carriers. The pair of Schottky diodes (60/40, 30/40) maintain the substrate (40) substantially depleted of such carriers and also reflects the modulated beam back through the liquid crystal.
    • 双肖特基二极管光阀(5)包括用于通过偏振旋转局部调制光束(120)以产生调制光束(121)的液晶(80)和位于液晶(80)附近的光电导体(40) 用于接收和吸收第二光束(110)。 光电导体(40)响应于第二光束(110)的光学内容来控制极化。 光电导体(46)包括半导体衬底和设置在衬底的相对侧上的一对肖特基二极管(60/40,30/40)。 基板(40)对第二光束(110)的吸收产生光生载流子。 这对肖特基二极管(60/40,30/40)保持了基本上耗尽这种载流子的衬底(40),并且还将经调制的光束反射回液晶。
    • 8. 发明授权
    • Near bandgap radiation modulation spatial light modulators
    • 近带隙辐射调制空间光调制器
    • US4828368A
    • 1989-05-09
    • US880217
    • 1986-06-30
    • Uzi EfronJan Grinberg
    • Uzi EfronJan Grinberg
    • H01L27/148G02F1/01G02F1/015G02F1/017G02F1/17H01L31/0264H01L31/14
    • B82Y20/00G02F1/017G02F1/0126G02F1/01716G02F2203/12
    • A near bandgap radiation modulation spatial light modulator (NBRM SLM) using multiple quantum wells (MQWs) is disclosed. Generally, the MQW NBRM SLM of the present invention comprises a MQW optical modulator 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 photoactivation 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 driver-compatible, spatial light modulator using multiple quantum wells.
    • 公开了使用多个量子阱(MQW)的近带隙辐射调制空间光调制器(NBRM SLM)。 通常,本发明的MQW NBRM SLM包括用于驱动MQW光调制器的MQW光调制器和驱动器装置。 本发明的MQW NBRM SLM可以配置为多种配置。 驱动器和MQW光调制器可以配置为混合或单片配置。 MQW光调制器可以在横向或纵向电场模式下工作。 MQW NBRM SLM结构可以使用电吸收或电折射效​​应以及透射或反射模式进行操作。 该结构可通过不同的寻址和写入机制进行操作,包括光激活和电子寻址。 替代实施例具有特殊特征,例如级联异质结MQW和像素化亚微米金属镜。 所公开的发明提供了使用多个量子阱的改进的高速度,高分辨率,半导体驱动器兼容的空间光调制器。