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    • 11. 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。
    • 14. 发明授权
    • Numerical division of two arrays by optical processing
    • 通过光学处理对两个阵列进行数值分割
    • US4686647A
    • 1987-08-11
    • US645573
    • 1984-08-29
    • Bernard H. SofferUzi EfronEmanuel Marom
    • Bernard H. SofferUzi EfronEmanuel Marom
    • G06E3/00G06G9/00
    • G06E3/005
    • Apparatus for performing a division of a dividend intensity array by a divisor intensity array on a pixel-by-pixel basis, to yield a quotient intensity array, wherein optical feedback principles are utilized in conjunction with two spatial radiation modulators, so that analog division is achieved. Specifically, a fraction of the output array of a first spatial radiation modulator is provided as the readout array to a second spatial radiation modulator, whose input is the divisor intensity array. The output array of the second image converter is then added to the dividend array and provided as the input to the first spatial radiation modulator, whereupon the output of the first spatial radiation modulator is the pixel-by-pixel quotient array resulting from division of the dividend array by the divisor array.
    • 用于通过除数强度阵列逐像素地执行除数强度阵列的划分的装置,以产生商强度阵列,其中光学反馈原理与两个空间辐射调制器结合使用,使得模拟除法 实现了 具体地,第一空间辐射调制器的输出阵列的一部分作为读出阵列被提供给第二空间辐射调制器,其第二空间辐射调制器的输入是除数强度阵列。 然后将第二图像转换器的输出阵列添加到除数阵列,并作为第一空间辐射调制器的输入提供,由此第一空间辐射调制器的输出是逐个像素商数组, 除数数组的除数数组。
    • 18. 发明授权
    • Nipi refractive index modulation apparatus and method
    • 尼泊尔折射率调制装置及方法
    • US4784476A
    • 1988-11-15
    • US7298
    • 1987-01-27
    • Joel N. SchulmanUzi Efron
    • Joel N. SchulmanUzi Efron
    • G02F1/015G02F1/017G02F1/01G02F1/03
    • G02F1/017B82Y20/00G02F1/01716G02F2001/0151
    • Various optical modulation systems and methods are disclosed 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 p-layers. 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 sturcture 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.
    • 公开了基于调制nipi结构的折射率的各种光学调制系统和方法。 通过在结构的n掺杂和p掺杂层上施加受控电压差来实现折射率调制。 与层交错的触点由延伸穿过结构的导电元件形成。 元素之一与n层建立欧姆接触,而与p层建立欧姆接触。 当实现为光学空间相位调制器时,钳位触点之一被提供为格栅,其将结构分成像素元件的矩阵,而另一个触点包括延伸穿过每个像素的单独的线。 将空间电压图案施加到像素线以将电荷注入其相应的层中,从而调制像素的折射率。 这对通过nipi结构传输的读出光束施加了期望的空间相位调制。 还公开了各种导波应用,其中波束通过平行于n和p层的钳位结构传输。 钳口结构不分为像素,而是在其n层和p层之间具有公共的电压差。 通过改变该电压差来对结构的折射率进行空​​间调制,从而将空间电压调制转移到光束上。