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1. 发明授权

US4516743A Scanning beam beamrider missile guidance system 失效
标题翻译：扫射梁光束导弹引导系统
公开(公告)号：US4516743A
公开(公告)日：1985-05-14
申请号：US486127
申请日：1983-04-18
申请人： Donald W. Sweeney , Neal C. Gallagher , Charles R. Christensen
发明人： Donald W. Sweeney , Neal C. Gallagher , Charles R. Christensen
IPC分类号： F41G7/26
CPC分类号： F41G7/26
摘要： A beamrider guidance system for missiles wherein a laser beam is given two circular motions around the boresight axis to produce amplitude and phase modulation on the signal received at the missile. The information on distance from boresight is contained in the amplitude modulation and the angular information is contained as phase modulation. A laser optical system with a spinning holographic element provides one of the circular motions for the beam. The other circular motion is provided by a low frequency, circular scanning mirror.
摘要翻译：用于导弹的光束引导系统，其中激光束被给予围绕视轴的两个圆周运动，以对在导弹上接收的信号产生振幅和相位调制。与视轴距离的信息包含在幅度调制中，并且角度信息被包含为相位调制。具有旋转全息元件的激光光学系统为光束提供圆形运动之一。另一个圆周运动由低频圆形扫描镜提供。

2. 发明授权

US4277137A Coherent optical correlator 失效
标题翻译：相干光相关器
公开(公告)号：US4277137A
公开(公告)日：1981-07-07
申请号：US949325
申请日：1978-10-06
申请人： Juris Upatnieks , Charles R. Christensen , Bobby D. Guenther
发明人： Juris Upatnieks , Charles R. Christensen , Bobby D. Guenther
IPC分类号： F41G7/22 , F41G7/34 , F42B15/02
CPC分类号： F41G7/343 , F41G7/2226 , F41G7/2246 , F41G7/2253 , F41G7/2293
摘要： Reference scenes stored in a filter set containing an array of sets of suimposed, holographic, matched filters are optically correlated with input images displayed on an optically-addressed, liquid crystal, light modulator 34. In operation, a selected laser diode is energized to direct a polarized light beam through the collimating lens L1 to the reflecting surface of a polarizing beam splitter 35. After reflecting off the beamsplitter surface, the beam is expanded by positive lens L2 and passed to the liquid crystal modulator. There it is modulated by the input image and reflected; after which it is recollimated by positive lens L2, transmitted by the beamsplitter, and directed to a particular array location of the filter set dependent upon which particular laser diode is energized. The filter set is positioned to be in the back focal plane of lens L4 so that the Fourier-transform of the input image is incident on the particularly located, superimposed matched filter at 31. If the Fourier transformed input image corresponds to one of the superimposed matched filters the incident light beam is diffracted by that particular hologram matched filter to form a spot of light at a predetermined array location of a detector array. The optical correlator finds use as a terminal guidance system in guiding a missile to its target.
摘要翻译：存储在包含叠加的，全息的匹配滤光器的阵列的滤波器组中的参考场景与在光寻址的液晶，光调制器34上显示的输入图像光学相关。在操作中，选择的激光二极管被激励以引导通过准直透镜L1的偏振光束到偏振光束分离器35的反射面。在反射分束器表面之后，光束被正透镜L2扩展并传递到液晶调制器。它由输入图像调制并反射; 之后，由分束器传输的正透镜L2重新记录，并且取决于特定的激光二极管被激励而被引导到滤波器组的特定阵列位置。滤波器组被定位在透镜L4的后焦平面中，使得输入图像的傅立叶变换在31处入射到特定位置的重叠匹配滤波器上。如果傅里叶变换输入图像对应于叠加的入射光束的匹配滤光器被特定的全息图匹配滤光片衍射，以在检测器阵列的预定阵列位置处形成光点。光相关器用作将导弹引导到目标的终端引导系统。

3. 发明授权

US4277127A Dopler extended depth of field imaging system with coherent object illumination 失效
标题翻译： Dopler扩展了具有相干对象照明的景深成像系统
公开(公告)号：US4277127A
公开(公告)日：1981-07-07
申请号：US99262
申请日：1979-12-03
申请人： James L. Smith , Charles R. Christensen
发明人： James L. Smith , Charles R. Christensen
IPC分类号： G03H1/10 , G03H1/14
CPC分类号： G03H1/10
摘要： A packageable system employs principles of Doppler holography on near-field objects to produce images from which photographs, transparencies or video reproductions can be made with simultaneous improvements in depth of field, foreground-backregion exposure ratio, and resolution (where degraded by the object medium). The apparatus consists of two units: a main unit containing a laser and optics, and an external platform that rotates at an appropriate angular velocity, through a very small arc, during image recording of an object on the platform.
摘要翻译：可封装的系统采用近场物体上的多普勒全息术原理来产生图像，从而可以同时改善景深，前景 - 背景曝光率和分辨率（由物体介质降解），从而可以进行照片，透明胶片或视频再现）。该装置包括两个单元：包含激光器和光学元件的主单元以及在平台上的对象的图像记录期间以适当的角速度通过非常小的弧旋转的外部平台。

4. 发明授权

US3954322A Holographic Doppler-spread imaging of moving objects 失效
标题翻译：移动物体的全息多普勒成像
公开(公告)号：US3954322A
公开(公告)日：1976-05-04
申请号：US554340
申请日：1975-02-28
申请人： Carl C. Aleksoff , Charles R. Christensen
发明人： Carl C. Aleksoff , Charles R. Christensen
IPC分类号： G02B27/58 , G03H1/10 , G03H1/14
CPC分类号： G03H1/10 , G02B27/58
摘要： The Doppler frequency shift of coherent light reflected from moving objects is used to obtain resolution much greater than the classical limit for imaging systems. The Doppler information is processed by using the temporal and spatial filtering properties of modulated reference wave holograms formed with a reference wave having a range of frequencies across it matching the Doppler frequencies received from the moving object.
摘要翻译：使用从移动物体反射的相干光的多普勒频移来获得比成像系统的经典极限更大的分辨率。多普勒信息通过使用调制的参考波全息图的时间和空间滤波特性来处理，所述参考波全息图由具有与从移动对象接收的多普勒频率相匹配的频率范围的参考波形成。

5. 发明授权

US5907401A Device and method for performing an optical hall test 失效
标题翻译：用于执行光学霍尔测试的装置和方法
公开(公告)号：US5907401A
公开(公告)日：1999-05-25
申请号：US937250
申请日：1997-09-03
申请人： Frederick W. Clarke , Joseph K. McDonald , Charles R. Christensen , John A. Grisham
发明人： Frederick W. Clarke , Joseph K. McDonald , Charles R. Christensen , John A. Grisham
IPC分类号： G01N21/21 , G01N21/35 , G01B9/02
CPC分类号： G01N21/21 , G01N21/3563 , G01N2021/3595
摘要： The device and method for performing an optical Hall test provide means foron-destructive measurement of free carrier concentration or effective mass in semiconductor materials using Faraday rotation spectra. A beam emitted by a Fourier transform infrared (FTIR) spectrometer is transmitted through the sample that is mounted between a polarizer and analyzer and the opposite poles of a magnet before finally being incident on a detector. The ratio of the samples's transmission spectrum with the magnetic field on to that with the magnetic field off is converted, through a suitable mathematical formula, to Faraday rotation. The rotation is, then, plotted versus the square of the wavelength. The slope of the graph at longer wavelengths is directly proportional to the carrier concentration and the effective mass. With one known, the other can be easily determined.
摘要翻译：用于执行光学霍尔测试的装置和方法提供了使用法拉第旋转光谱对半导体材料中的自由载流子浓度或有效质量进行非破坏性测量的装置。由傅里叶变换红外（FTIR）光谱仪发射的光束通过安装在偏振器和分析仪之间的样品和最后入射到检测器上的磁体的相反极之间传输。将样品的透射光谱与磁场的关系与通过磁场的透射光谱的比率通过适当的数学公式转换为法拉第旋转。然后，相对于波长的平方来绘制旋转。图中较长波长的斜率与载流子浓度和有效质量成正比。有一个已知的，另一个可以很容易地确定。

6. 发明授权

US5210417A Modulated high sensitivity infrared polarimeter 失效
标题翻译：调制高灵敏度红外光谱仪
公开(公告)号：US5210417A
公开(公告)日：1993-05-11
申请号：US839627
申请日：1992-02-24
申请人： John A. Grisham , Frederick W. Clarke , Charles R. Christensen , John L. Stensby
发明人： John A. Grisham , Frederick W. Clarke , Charles R. Christensen , John L. Stensby
IPC分类号： G01N21/21
CPC分类号： G01N21/21 , G01N2021/1719 , G01N2021/1727
摘要： A modulated Faraday rotation signal is produced by passing a linearly polarized laser beam through a semiconductor wafer sample in a modulated magnetic field that is induced in an electromagnet by a sine wave generator and driver coupled thereto. The rotation signal is normalized by dividing by a transmission signal produced by modulating the beam with a chopper that operates at a different frequency from the frequency of the driver. The result is a Faraday rotation measurement with high signal-to-noise ratio and compensation for laser drift in intensity.
摘要翻译：调制的法拉第旋转信号通过使线性偏振的激光束通过半导体晶片样品在由正弦波发生器和耦合到其的驱动器在电磁体中感应的调制磁场中而产生。旋转信号通过除以由与驱动器的频率不同的频率操作的斩波器调制波束而产生的发送信号而被归一化。结果是具有高信噪比的法拉第旋转测量和强度激光漂移的补偿。

7. 发明授权

US4575192A Method of bragg angle adjustments for copying holograms 失效
标题翻译：复制全息图的布拉格角调整方法
公开(公告)号：US4575192A
公开(公告)日：1986-03-11
申请号：US540949
申请日：1983-10-11
申请人： Joseph G. M. Duthie , Charles R. Christensen , Carl D. Leonard
发明人： Joseph G. M. Duthie , Charles R. Christensen , Carl D. Leonard
IPC分类号： G03H1/20
CPC分类号： G03H1/202 , G03H2001/0417 , G03H2260/10 , Y10S359/90
摘要： A method of copying a thick hologram, recorded at wavelength .lambda..sub.1, so that the copy can be efficiently read out with a beam .lambda..sub.3 at the same incident angle as used to efficiently read out the original. The method involves copying the hologram using wavelength .lambda..sub.2 at a predetermined incident angle, which incident angle provides fringe angles in the copy to yield maximum diffraction efficiency of the read-out beam .lambda..sub.3.
摘要翻译：复制以波长λ1记录的厚全息图的方法，使得能够以与用于有效读出原稿相同的入射角的光束λ3有效地读出该拷贝。该方法涉及以预定的入射角度使用波长λ2复制全息图，该入射角度在拷贝中提供边缘角度以产生读出光束λ3的最大衍射效率。

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