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公开(公告)号：US4556950A
公开(公告)日：1985-12-03
申请号：US528942
申请日：1983-09-02
申请人： Anthony M. Tai , Carl C. Aleksoff
发明人： Anthony M. Tai , Carl C. Aleksoff
CPC分类号： G06E3/003
摘要： An optical signal processor operating on interferometric principles serves to perform real time Fourier transformations on the intensity distribution of one-dimensional incoherent input light sources.
摘要翻译： 以干涉测量原理工作的光信号处理器用于对一维非相干输入光源的强度分布进行实时傅里叶变换。
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公开(公告)号：US4478481A
公开(公告)日：1984-10-23
申请号：US348461
申请日：1982-02-12
摘要： An apparatus for the production of a holographic image of a subject disposed at a subject plane includes a source of coherent light divided by a beamsplitter into a reference beam and a subject beam. The subject beam is directed towards the subject through a beamsplitter and a quarter-wave plate. The front surface of an opaque subject or a mirror behind a transparent subject reflects the subject beam back through the quarter-wave plate to the beamsplitter where it is deflected towards a photo-sensitive recording medium through an imaging lens. The reference beam is simultaneously directed toward the recording medium at a predetermined angle of incidence. After exposure and development of the medium, it is illuminated from the conjugate direction by the redirected reference beam. Image rays exactly retrace their original paths back through the optical system and provide a three-dimensional real-image reconstruction at the subject plane. The images produced may be microscopically examined or studied through optical processing and interferrometric techniques. A method utilizing the above-described apparatus is also disclosed.
摘要翻译： 用于制造设置在被摄体平面处的被摄体的全息图像的装置包括由分束器分割成参考光束和被摄体光束的相干光源。 被摄体束通过分束器和四分之一波片指向对象。 不透明物体的前表面或透明物体后面的反射镜将被摄体光束反射回四分之一波片到分束器，在那里它通过成像透镜偏转到光敏记录介质。 参考光束以预定的入射角同时朝向记录介质。 在介质的曝光和显影之后，通过重定向的参考光束从共轭方向照射。 图像光线正好通过光学系统回溯其原始路径，并在主体平面上提供三维实像重建。 所产生的图像可以通过光学加工和干涉测量技术进行微观检查或研究。 还公开了利用上述装置的方法。
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公开(公告)号：US3867639A
公开(公告)日：1975-02-18
申请号：US36115673
申请日：1973-05-17
申请人： TURLABOR AG
CPC分类号： G02B27/46 , G06E3/003 , Y10T428/24273
摘要： Optical correlator for comparing a test sample with a standard object in which a diffractive image of the sample is projected on a holographic filter by a beam of coherent light. The light beam being diffracted by the filter is subsequently conveyed through an apertured diaphragm into a light-measuring apparatus generating an electrical signal proportionate to the intensity of the received light. An auxiliary filter is positioned either forwardly or rearwardly of the holographic filter, and is either a black-white or phase-reversing filter transmitting either one or both halves, respectively, of each of the diffraction orders generated by the standard object.
摘要翻译： 用于将测试样本与标准物体进行比较的光学相关器，其中通过相干光束将样品的衍射图像投影在全息滤光器上。 被滤光器衍射的光束随后通过孔径光阑传送到光测量装置中，产生与接收光的强度成比例的电信号。 辅助过滤器位于全息滤光器的前方或后方，并且分别是透射由标准物体产生的每个衍射级的一个或两半的黑白或相位反转滤光片。
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公开(公告)号：US3816647A
公开(公告)日：1974-06-11
申请号：US24131772
申请日：1972-04-05
申请人： NORTHROP CORP
发明人： CHANG M , MCCRICKERD J
摘要： A light beam is generated by means of a narrow band collimated light source, and this light beam is modulated in accordance with an electrical input signal to be identified. The light beam is then optically scanned at a predetermined scanning rate to produce an optical image of the input signals against a time base. Light from this optical image is passed through a holographic reference transparency, which is a spatial filter corresponding to the Fourier transform of the image of known electrical signals, the light passing through the transparency being fed to a detector. Successive reference transparencies are utilized until correlation between the transparency and the input signal to be identified is indicated by a peaking of the detector output which is sensed by a correlation indicator.
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公开(公告)号：US3802762A
公开(公告)日：1974-04-09
申请号：US24912772
申请日：1972-05-01
申请人： SIEMENS AG
发明人： KIEMLE H
摘要： A coherent optical multichannel correlator for identifying an object to be investigated by permeating the object with a beam of coherent radiation which is received by a transformation element and projected on a filter hologram which reconstructs a reference wave received by an optical sensor when the object to be identified is correlated with a filter hologram characterized by a Fourier transformation element comprising a plurality of lenses arranged in a raster with each lens having a focal point separated from a focal point of adjacent lenses, and by the filter hologram comprising a plurality of filter holograms with each of the plurality of filter holograms associated with a separate lens of the raster. The raster of lenses may be a raster of Fresnel zone lenses. The optical sensing element may be a single element which receives the reconstructed waves from each of the filter holograms or it may be subdivided into a plurality of sensing elements with each of the elements associated to receive the reconstructed reference wave of a single hologram filter. The lenses of the raster may be arranged with the focal point of each of the lenses lying in a single plane extending vertically to the optical axis of the beam or can be arranged with the focal points lying in a plurality of different parallel planes which extend vertical to the optical axis and preferably the filter holograms are located at the focal point for its respective lens.
摘要翻译： 一种相干光多通道相关器，用于通过用相干辐射束透过物体来识别待研究的物体，所述相干光束由变换元件接收并投射在过滤器全息图上，当滤光片全息图重建由光学传感器接收的参考波时 识别的滤波器全息图与傅里叶变换元件相关联，所述傅里叶变换元件包括布置在光栅中的多个透镜，每个透镜具有与相邻透镜的焦点分离的焦点，并且包括多个滤色器全息图， 多个滤光片全息图中的每一个与光栅的单独透镜相关联。 透镜的光栅可以是菲涅耳带透镜的光栅。 光学传感元件可以是接收来自每个滤光片全息图的重构波的单个元件，或者它可以被细分为多个感测元件，其中每个元件相关联以接收单个全息图滤光器的重建的参考波。 光栅的透镜可以布置成每个透镜的焦点位于垂直于光束的光轴延伸的单个平面中，或者可以将焦点布置在多个不同的平行平面中，该平行平面垂直延伸 并且优选地，滤光片全息图位于其相应透镜的焦点处。
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公开(公告)号：US3785736A
公开(公告)日：1974-01-15
申请号：US3785736D
申请日：1972-01-13
申请人： THOMSON CSF
摘要： The present invention relates to double-diffraction optical correlators. According to the invention there is provided a multi-channel optical correlator for shape recognition wherein the lenses and the filters are all constituted by patterns of fringes ; each channel is fed from a quasi-monochromatic and quasi-punctiform light source, which may be spatially incoherent.
摘要翻译： 本发明涉及双衍射光学相关器。
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47.发明授权Optical correlator having a dye amplifier for amplifying correlating portions of signals 失效具有用于放大信号相关部分的DYE放大器的光学相关器
公开(公告)号：US3779631A
公开(公告)日：1973-12-18
申请号：US3779631D
申请日：1971-12-27
申请人： BENDIX CORP
发明人： SHUPE D
CPC分类号： G06E3/003 , H01S3/094034 , H01S3/2308 , H01S3/2358
摘要： An optical correlator in which a Fourier transform signal representing one image, and a Fourier transform holographic interference signal representing another image are projected onto an organic dye cell amplifier. The dye cell amplifier records, or in other words absorbs energy from the holographic interference signal and utilizes the absorbed energy to differentially amplify the Fourier transform signal. The amount of amplification provided to the various portions of the Fourier transform signal is proportional to the degree of correlation between the various portions of the two images.
摘要翻译： 其中表示一个图像的傅里叶变换信号和表示另一图像的傅立叶变换全息干涉信号的光学相关器被投影到有机染料单元放大器上。 染料单元放大器记录或换句话说，从全息干涉信号中吸收能量，利用所吸收的能量对傅立叶变换信号进行差分放大。 提供给傅立叶变换信号的各个部分的放大量与两个图像的各个部分之间的相关程度成正比。
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48.发明授权
公开(公告)号：US3644889A
公开(公告)日：1972-02-22
申请号：US3644889D
申请日：1970-04-23
申请人： THOMSON CSF
摘要： An optical multiplier, such as a fly''s eye lens projects a symbol to be recognized on a plurality of masks, which are subdivided into strips, each strip of the mask having predetermined transparencies and transmitting elementary sections of the image to associated photoelectric transducers which are connected to logic circuits identifying those of the transducers associated with any one strip which, conjointly, have an extreme (e.g., maximum) output signal. Preferably, optical or electrical weighting elements are interposed to optimize the outputs of the transducers associated with the various masks.
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公开(公告)号：US3211898A
公开(公告)日：1965-10-12
申请号：US14628361
申请日：1961-10-19
申请人： TRW INC
发明人： FOMENKO SERGEI M
IPC分类号： G06E3/00
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公开(公告)号：US2664243A
公开(公告)日：1953-12-29
申请号：US14264750
申请日：1950-02-06
申请人： HYMAN HURVITZ
发明人： HYMAN HURVITZ
IPC分类号： G06E3/00
CPC分类号： G06E3/003
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