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    • 5. 发明授权
    • Phased array for optical beam control
    • 光束控制相控阵
    • US5151814A
    • 1992-09-29
    • US673175
    • 1991-03-18
    • Jan GrinbergThomas R. O'MearaYuri OwechkoMelvin E. PedinoffBernard H. Soffer
    • Jan GrinbergThomas R. O'MearaYuri OwechkoMelvin E. PedinoffBernard H. Soffer
    • G02F1/1343G02F1/1347G02F1/139G02F1/29
    • G02B27/0087G02F1/292G02F1/134336G02F1/1347G02F1/1393G02F2203/01G02F2203/02G02F2203/24
    • An optical beam scanner incorporating an array of beam deflection elements commonly controlled to steer an optical beam impingent on the array is described. The beam steering elements are arranged in the array as individually controlled elements and the deflection of the beam is accomplished by setting the phase tilt and the phase offset of each element according to a calculation which removes modulo 2.pi. phase shift from the required position relative to a flat plane. Thus, the array elements can be thin and need only supply about 2 radians of phase shift. These elements may be incorporated in a planar array using beam deflection elements such as liquid crystal beam deflectors by choosing a drive scheme representing either a blazed array or a flat piston array. Operation may be designed for a large range of light wavelengths and the system may efficiently accommodate a combination of the blazed and flat piston techniques to obtain beam deflection characteristics otherwise unavailable by the exclusive use of each individual technique. By use of the liquid crystal phased array approach, rapid, high accuracy, large area beam deflection is possible without the necessity of any moving parts and with low power drive requirements. Phased arrays of the type described above may be arranged in successive parallel planes with a common beam axis to provide two-dimensional beam deflection.
    • 描述了一种光束扫描器,其包括通常被控制以引导照射在阵列上的光束的光束偏转元件阵列。 光束操纵元件作为独立控制的元件布置在阵列中,并且通过根据计算来设置每个元件的相位倾斜和相位偏移来实现光束的偏转,该计算从相对于所需位置移除模2π相移 平面飞机 因此,阵列元件可以是薄的,并且仅需要提供约2弧度的相移。 通过选择表示闪耀阵列或平坦活塞阵列的驱动方案,这些元件可以使用诸如液晶束偏转器的光束偏转元件并入平面阵列中。 操作可以设计用于大范围的光波长,并且系统可以有效地适应闪耀和平坦活塞技术的组合以获得否则不能通过各自独占技术的独占使用而获得光束偏转特性。 通过使用液晶相位阵列方法,可以快速,高精度,大面积的光束偏转,而不需要任何移动部件和低功率驱动要求。 上述类型的相控阵列可以布置在具有共同波束轴的连续平行平面中,以提供二维波束偏转。
    • 7. 发明授权
    • Method and apparatus for ultra high frequency spectrum analysis
    • 用于超高频谱分析的方法和装置
    • US4871232A
    • 1989-10-03
    • US130032
    • 1987-12-07
    • Jan GrinbergEmanuel MaromBernard H. SofferThomas R. O'MearaAdrian E. Popa
    • Jan GrinbergEmanuel MaromBernard H. SofferThomas R. O'MearaAdrian E. Popa
    • G01R23/17
    • G01R23/17
    • A high frequency spectral analysis system and method operates by modulating an optical beam with a high frequency signal to be analyzed, and sampling the beam simultaneously at periodically spaced locations along its length. The sampled portions are then focused to a spectral mapping. In the preferred embodiment a beam is directed in a zigzag pattern through a plate, one surface of which is totally reflective and the opposite surface of which is partially reflective. Periodic parallel samples are obtained from the minor portions of the beam which are transmitted out of the plate through the partially reflective surface. The totally reflective surface is preferably formed as a series of cylindrical surfaces which focus the beam to small spots at the partially reflective surface, thereby permitting a higher spatial density of samples without overlapping. The plate thickness is selected so that the beam is sampled at the Nyquist rate for the highest frequency contained in the signal of interest.
    • 高频谱分析系统和方法通过用待分析的高频信号调制光束并且沿其长度在周期性间隔的位置同时采样光束来操作。 然后将采样的部分聚焦到光谱映射。 在优选实施例中,光束以锯齿形图案通过板,其一个表面是完全反射的,其相对表面是部分反射的。 从束的少部分获得周期性的平行样品,其通过部分反射表面从板上传出。 全反射表面优选地形成为将光束聚焦在部分反射表面处的小斑点的一系列圆柱形表面,从而允许更高的样品空间密度而不重叠。 选择板厚度使得以包含在感兴趣信号中的最高频率的奈奎斯特速率采样波束。
    • 8. 发明授权
    • Optical intensity-to-position mapping and light deflector apparatus and
method
    • 光强对位置映射和光偏转装置及方法
    • US4958914A
    • 1990-09-25
    • US198018
    • 1988-05-24
    • Yuri OwechkoBernard H. Soffer
    • Yuri OwechkoBernard H. Soffer
    • G02F1/135G02F1/29
    • G02F1/135G02F1/292
    • A light deflector apparatus and method is disclosed which provides an optical intensity-to-position mapping as well as optical switching capabilities. An array of voltage gradient modules (24, 26, 28) are provided in a layer of electro-optic material (52), such as liquid crystals, by establishing variable spatial voltage gradients and accompanying electric fields in a direction transverse to input light (58). The voltage gradients are varied in accordance with the optical intensities at corresponding locations in the received light (58), resulting in optical outputs which vary in direction in accordance with the voltage gradient locations. The directional outputs are then focused to produce a positional mapping (64, 66, 68) of the input light intensities. The voltage gradients are preferably established by an interdigitated electrode array (50) and a counter electrode (54) on opposite sides of the liquid crystal (52). Reflective and transmissive light valve embodiments are described in which the voltage gradient modules form voltage dividers with an underlying photoconductive layer (56). A fiber optic switch is also described. Also described is a system in which the refractive indices of an array of small variable refraction modules are varied in accordance with the spatial optical intensities at corresponding locations in an input beam to produce as output, optical intensity-to-position mapping.
    • 公开了一种光偏转器装置和方法,其提供光强度到位置映射以及光学切换能力。 通过在横向于输入光的方向上建立可变的空间电压梯度和伴随的电场,将电压梯度模块(24,26,28)的阵列设置在诸如液晶的电光材料层(52)中 58)。 电压梯度根据接收光(58)中对应位置处的光强度而变化,导致根据电压梯度位置在方向上变化的光输出。 然后将方向输出聚焦以产生输入光强度的位置映射(64,66,68)。 电压梯度优选通过在液晶(52)的相对侧上的叉指电极阵列(50)和对电极(54)来建立。 描述了反射和透射光阀实施例,其中电压梯度模块与下面的光电导层(56)形成分压器。 还描述了光纤开关。 还描述了一种系统,其中根据输入光束中的相应位置处的空间光学强度改变小可变折射模块阵列的折射率以产生作为输出光强度到位置映射的系统。
    • 10. 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。