-
公开(公告)号：US5274716A
公开(公告)日：1993-12-28
申请号：US755308
申请日：1991-09-05
摘要： In a joint transform correlator, a technique that performs a correlation processing between two-dimensional images by using a coherent beam, this invention forms a feedback system in which two-dimensional correlation coefficients between at least one reference image and at least one signal image obtained as a result of a correlation processing are input to a linear or non-linear transfer function and in which the intensities of light passing through the reference images corresponding to the correlation coefficients are virtually changed according to the output of the transfer function. And then in this condition a similar correlation processing is performed. This loop of processing is repeated. In this case, when, in addition to an expression of the transfer function, other items--which include a dynamic range of the transfer function and a non-linear transfer function are used, the threshold values are changed according to such conditions as the number and kind of reference images and the distribution of correlation coefficients.
-
公开(公告)号：US5800033A
公开(公告)日：1998-09-01
申请号：US548455
申请日：1995-10-26
CPC分类号： H04N9/3105
摘要： An image projecting apparatus comprises a light source for emitting light, a spatial light modulating element, an illuminating optical system for irradiating a light from the light source to the spatial light modulating element, and a projecting optical system for projecting an image of the spatial light modulating element. The illuminating optical system or the projecting optical system comprises a telecentric optical system and a light shielding frame disposed at a focus position of the telecentric optical system for controlling an angular component of a luminous flux of light emitted by the light source or the spatial light modulating element, respectively, to adjust the quality of the projected image.
摘要翻译： 图像投影装置包括用于发光的光源，空间光调制元件，用于将来自光源的光照射到空间光调制元件的照明光学系统，以及用于投影空间光的图像的投影光学系统 调制元件。 照明光学系统或投影光学系统包括远心光学系统和设置在远心光学系统的焦点位置处的遮光框架，用于控制由光源发射的光的光束的角分量或空间光调制 元素，分别调整投影图像的质量。
-
公开(公告)号：US5175775A
公开(公告)日：1992-12-29
申请号：US734275
申请日：1991-07-22
申请人： Tadao Iwaki , Yasuyuki Mitsuoka
发明人： Tadao Iwaki , Yasuyuki Mitsuoka
CPC分类号： G06K9/748
摘要： An optical pattern recognition method which can be applied to a joint transform correlator operative to effect correlation processing between a plurality of reference images and at least a single object image to produce correlation peaks corresponding to the respective reference images. The joint transform correlator is provided with a feedback system effective to regulate the intensity of the respective reference images according to the corresponding correlation peak value so as to noise-shape the correlation peaks to discriminate most-correlated reference images. The pattern recognition method is carried out in the correlator sequentially by first preparing a plurality of initial groups each containing a given number of individual reference images and carrying out the pattern recognition of the object image with respect to each of the initial groups to discriminate each of the most-associated reference images having a maximum correlation coefficient in each initial group. Next, the discriminated most-associated reference images are regrouped into new groups, the number of groups is less than that of the initial groups, and the pattern recognition of the object image with respect to the new groups is again carried out so as to enable next regrouping. Then, the regrouping is repeatedly carried out so as to reduce the number of the groups to thereby form a final group and carrying out the pattern recognition of the object image using the final group of reference images to thereby determine a particular reference image corresponding to the object image.
摘要翻译： 一种光学图案识别方法，其可以应用于联合变换相关器，其用于实现多个参考图像与至少一个对象图像之间的相关处理，以产生对应于各个参考图像的相关峰值。 联合变换相关器设置有反馈系统，其有效地根据对应的相关峰值来调节各个参考图像的强度，以便对相关峰值进行噪声形状以区分最相关的参考图像。 通过首先准备多个初始组，每个包含给定数量的各个参考图像并执行相对于每个初始组的对象图像的模式识别，分别在相关器中进行模式识别方法 最相关的参考图像在每个初始组中具有最大相关系数。 接下来，将所识别的最相关的参考图像重新分组为新组，组的数量小于初始组的组数，并且再次执行相对于新组的对象图像的模式识别，以便能够 下一次重组。 然后，重复进行重组，以便减少组的数量，从而形成最终组，并使用最终的参考图像组来执行对象图像的模式识别，从而确定对应于 对象图像。
-
4.发明授权Optically addressed spatial light modulating system bias light source and method for driving the system 失效光学寻址空间光调制系统偏光源和驱动系统的方法
公开(公告)号：US5555115A
公开(公告)日：1996-09-10
申请号：US954316
申请日：1992-09-30
申请人： Yasuyuki Mitsuoka , Tadao Iwaki , Nobuyuki Kasama
发明人： Yasuyuki Mitsuoka , Tadao Iwaki , Nobuyuki Kasama
CPC分类号： G02F1/135
摘要： An optically addressed spatial light modulating system comprises a spatial light modulator using a liquid crystal material. A writing light irradiation device irradiates a writing light which records an image onto the spatial light modulator. A reading out light irradiation device irradiates a reading out light which is used to read out the recorded image from the spatial light modulator. A bias light irradiation device irradiates a bias light onto the spatial light modulator, and a bias light adjustment device changes at least one of the irradiation time and the light intensity of the bias light. A driving device supplies writing voltage signals to the spatial light modulator. The irradiation time of the write light and the irradiation time of the bias light overlap with the application time of the write voltage of the spatial light modulator for a predetermined amount of time for adjusting the sensitivity of the spatial light modulator. Thus, the changing of the recording sensitivity of the optically addressed spatial light modulator is facilitated. It is also possible to write data into the spatial light modulator operating at a high speed by changing the threshold of the write image and to record an image with low write light intensity.
摘要翻译： 光学寻址的空间光调制系统包括使用液晶材料的空间光调制器。 书写光照射装置将记录图像的写入光照射到空间光调制器上。 读出光照射装置照射用于从空间光调制器读出记录图像的读出光。 偏置光照射装置将偏光照射到空间光调制器上，偏置光调节装置改变偏光的照射时间和光强度中的至少一个。 驱动装置向空间光调制器提供写入电压信号。 写入光的照射时间和偏光的照射时间与用于调整空间光调制器的灵敏度的预定时间量的空间光调制器的写入电压的施加时间重叠。 因此，有助于光学寻址的空间光调制器的记录灵敏度的改变。 也可以通过改变写入图像的阈值并以低写入光强度记录图像来将数据写入高速操作的空间光调制器。
-
公开(公告)号：US5132811A
公开(公告)日：1992-07-21
申请号：US545913
申请日：1990-06-28
申请人： Tadao Iwaki , Yasuyuki Mitsuoka , Shuhei Yamamoto
发明人： Tadao Iwaki , Yasuyuki Mitsuoka , Shuhei Yamamoto
CPC分类号： G06E3/005 , G03H1/16 , G03H1/22 , G03H1/2294 , G03H2001/0088 , G03H2222/56 , G03H2225/25 , G03H2226/11 , H04Q2011/002 , H04Q2011/0035
摘要： A holographic apparatus has an inferometer for concurrently irradiating an image recording medium by a writing reference light of spherical or plane wave form and a signal light containing image information which interfere with each other to form a hologram, and means for irradiating the hologram by a reading reference light in the opposite direction of the reference light to thereby reconstruct the image information. The image recording medium is comprised of a photoconductive layer, an optical reflective layer, a pair of liquid crystal alignment layers, a ferroelectric liquid crystal layer having bistable memory characteristic between its optical reflectivity and an applied voltage, means for applying the voltage and a pair of transparent substrates. The interferometer is preferably of the Mach-Zehnder type which includes along its signal light forming path an optical shutter, means for entering image information and an imagery optical system for optionally optically Fourier transforming the input image information and then enlarging the same to form the image on an otpical writing face of the light addressed liquid crystal light valve. By such construction, an extremely small holographic apparatus can be obtained to record and read the hologram in real time.
摘要翻译： 全息装置具有用于通过球面或平面波形的写入基准光和包含彼此干涉以形成全息图的图像信息的信号光同时照射图像记录介质的推测器，以及用于通过读取照射全息图的装置 在参考光的相反方向上参考光，从而重建图像信息。 图像记录介质包括光电导层，光反射层，一对液晶取向层，在其光反射率和施加电压之间具有双稳态存储特性的铁电液晶层，用于施加电压和一对的装置 的透明基板。 干涉仪最好是马赫 - 曾德尔（Mach-Zehnder），它包括沿其信号光形成路径的光学快门，用于输入图像信息的装置和用于可选地光学傅立叶变换输入图像信息并且然后将其放大以形成图像的成像光学系统 在光寻址液晶光阀的口头写字面上。 通过这样的结构，可以获得极小的全息装置来实时记录和读取全息图。
-
公开(公告)号：US5854707A
公开(公告)日：1998-12-29
申请号：US611738
申请日：1996-03-06
IPC分类号： G02B5/30 , G02B27/28 , G02F1/1335 , G02F1/13357 , G03B21/00 , H04N5/74
CPC分类号： G02F1/13362 , G02B27/28 , G02B27/283 , H04N5/7441 , G02F1/133536 , G02F2001/13355
摘要： A polarizing type optical apparatus has a first polarizing element disposed in a path of an incident luminous flux produced by a light source and a second polarizing element disposed in the path of a luminous flux reflected from the first polarizing element. The first polarizing element has a p polarized light component transmitting characteristic which varies less with respect to an incident angle of a luminous flux than that of the second polarizing element and has a p polarized light component transmittance which is higher than that of the second polarizing element, and the second polarizing element has an s polarized light component transmitting characteristic which varies less with respect to an incident angle of a luminous flux than that of the first polarizing element and has an s polarized light component transmittance which is lower than that of the first polarizing element, such that the incident luminous flux produced by the light source is irradiated onto the first polarizing element, the luminous flux reflected by the first polarizing element consists mainly of an s polarized light component, and the luminous flux reflected by the second polarizing element consists of a substantially pure s polarized light component.
摘要翻译： 偏振型光学装置具有设置在由光源产生的入射光束的路径中的第一偏振元件和设置在从第一偏振元件反射的光束的路径中的第二偏振元件。 第一偏振元件具有相对于第二偏振元件的光通量的入射角变化较小的偏振光分量透射特性，并且具有比第二偏振元件高的偏振光分量透射率， 第二偏振元件具有相对于光通量的入射角比第一偏振元件的入射角变化较小的s偏振光分量透射特性，并且具有比第一偏振元件低的s偏振光分量透射率 使得由光源产生的入射光束照射到第一偏振元件上，由第一偏振元件反射的光束主要由s偏振光分量组成，并且由第二偏振元件反射的光束由 基本上纯的s偏振光分量。
-
7.发明授权
公开(公告)号：US5694182A
公开(公告)日：1997-12-02
申请号：US439195
申请日：1995-05-11
申请人： Yasuyuki Mitsuoka , Tadao Iwaki , Nobuyuki Kasama
发明人： Yasuyuki Mitsuoka , Tadao Iwaki , Nobuyuki Kasama
CPC分类号： G02F1/135
摘要： An optically addressed spatial light modulation system includes a ferroelectric liquid crystal spatial light modulator. A writing light source irradiates a writing light for recording an image onto the spatial light modulator. A read-out light source irradiates a bias light for adjusting the sensitivity of the spatial light modulator and a read-out light for reading a recorded image from the spatial light modulator. An adjusting circuit is used to adjust the bias light intensity or irradiation time in synchronism with the writing light to increase the sensitivity of the spatial light modulator. A driving circuit supplies writing voltage signals to the spatial light modulator. The irradiation times of the write light and the bias light overlap with the application of the writing voltage signals for a predetermined time for adjusting the sensitivity of the spatial light modulator.
摘要翻译： 光学寻址的空间光调制系统包括铁电液晶空间光调制器。 写入光源将用于将图像记录的写入光照射到空间光调制器上。 读出光源照射用于调整空间光调制器的灵敏度的偏置光和用于从空间光调制器读取记录图像的读出光。 调整电路用于与写入光同步地调整偏光强度或照射时间，以增加空间光调制器的灵敏度。 驱动电路向空间光调制器提供写入电压信号。 写入光和偏置光的照射时间与施加写入电压信号预定时间重叠，以调整空间光调制器的灵敏度。
-
公开(公告)号：US5309523A
公开(公告)日：1994-05-03
申请号：US931893
申请日：1992-08-18
申请人： Tadao Iwaki , Yasuyuki Mitsuoka
发明人： Tadao Iwaki , Yasuyuki Mitsuoka
IPC分类号： G06E3/00 , G06K9/74 , G06F15/336 , G06K9/64
摘要： In a joint transform correlator utilizing a spatial optic modulator, depending on the light intensity of each correlation peak obtained from optical correlation processing between at least one reference image and at least one input image, the light intensity passing through each reference image corresponding to each correlation peak is substantially adjusted so as to constitute a feedback system. By such construction, when processing a relatively large number of input or reference images, the correlator can avoid failure of recognition due to the reduction of light intensity of the correlation peaks and can avoid erroneous recognition to enable fast pattern recognition.
摘要翻译： 在利用空间光学调制器的联合变换相关器中，根据从至少一个参考图像和至少一个输入图像之间的光学相关处理获得的每个相关峰值的光强度，通过对应于每个相关性的每个参考图像的光强度 基本上调整峰值以构成反馈系统。 通过这样的结构，当处理相对大量的输入或参考图像时，相关器可以避免由于相关峰值的光强度的降低导致的识别失败，并且可以避免错误识别以实现快速模式识别。
-
9.发明授权Optical pattern recognition system method of ferroelectric liquid crystal spatial light modulator 失效铁电液晶空间光调制器的光学图案识别系统方法
公开(公告)号：US5600485A
公开(公告)日：1997-02-04
申请号：US282076
申请日：1994-07-28
申请人： Tadao Iwaki , Yasuyuki Mitsuoka
发明人： Tadao Iwaki , Yasuyuki Mitsuoka
CPC分类号： G06K9/748 , G02F1/135 , G06E3/005 , G09G3/3651 , G09G2310/061 , G09G2310/065 , G09G3/2007 , G09G3/2011
摘要： An high-speed, high-resolution optical pattern recognition system which automatically recognizes or measures a specified pattern from two-dimensional images comprises an image display device for displaying at least one reference image including at least one target and at least one input image, a device including a laser diode having an oscillation wavelength less than 900 nm for converting the at least one reference image and the at least one input image into a coherent image, a Fourier transform lens for optically Fourier transforming the coherent image to produce a joint Fourier-transformed image, an optically addressed ferroelectric liquid crystal spatial light modulator having no light reflection layer, a device for converting the joint Fourier-transformed image into an intensity distribution image and displaying the intensity distribution image on the optically addressed spatial light modulator, and a device including a laser diode having an oscillation wavelength longer than 660 nm for reading the intensity distribution image displayed on the optically addressed spatial light modulator. The Fourier transform lens also Fourier transforms the intensity distribution image to produce a two-dimensional correlation image distribution of the reference image and the input image and a detector detects the correlation peak intensity of the reference image and the input image contained in the correlation image distribution and outputs a corresponding electrical signal.
摘要翻译： 从二维图像自动识别或测量指定图案的高速，高分辨率光学图案识别系统包括用于显示包括至少一个目标和至少一个输入图像的至少一个参考图像的图像显示装置， 包括具有振荡波长小于900nm的激光二极管的装置，用于将所述至少一个参考图像和所述至少一个输入图像转换成相干图像;傅里叶变换透镜，用于对所述相干图像进行光学傅里叶变换，以产生联合傅立叶 - 变形图像，不具有光反射层的光学寻址铁电液晶空间光调制器，用于将联合傅里叶变换图像转换为强度分布图像并在光学寻址空间光调制器上显示强度分布图像的装置，以及装置 包括具有长于660的振荡波长的激光二极管 用于读取在光学寻址的空间光调制器上显示的强度分布图像。 傅立叶变换透镜还对强度分布图像进行傅里叶变换，以产生参考图像和输入图像的二维相关图像分布，并且检测器检测参考图像和包含在相关图像分布中的输入图像的相关峰值强度 并输出相应的电信号。
-
公开(公告)号：US5577826A
公开(公告)日：1996-11-26
申请号：US548456
申请日：1995-10-26
CPC分类号： H04N9/3105 , G02B27/283
摘要： To effectively utilize a luminous flux from a light source thereby realizing a reflecting type color image projecting apparatus having a high brightness. The apparatus includes three sheets of reflecting type optical writing liquid crystal light valves, means for writing images of respective color components to the respective reflecting type optical writing liquid crystal light valves, a polarized beam splitter for splitting a light source luminous flux into polarized light illuminating luminous fluxes, means for separating only a green component of one of the polarized light illuminating luminous fluxes, means for separating the other one of the polarized light illuminating luminous fluxes into a red component and a blue component and a projecting lens. A back focus from the projecting lens to the reflecting type optical writing liquid crystal light valves can be shortened and utilization efficiency of a luminous flux from a light emitting source can more be enhanced than a conventional reflecting type color image projecting apparatus.
摘要翻译： 为了有效地利用来自光源的光通量，从而实现了具有高亮度的反射型彩色图像投影装置。 该装置包括三片反射型光写入型液晶光阀，用于将各种颜色分量的图像写入各反射型光写入型液晶光阀的装置，用于将光源光束分解为偏振光的偏振分束器 光通量，用于仅分离偏振光照射光束中的一个的绿色分量的装置，用于将偏振光照射光束中的另一个分离为红色分量和蓝色分量的装置以及投影透镜。 可以缩短从投影透镜到反射型光写入型液晶光阀的后焦距，与传统的反射型彩色图像投影装置相比，可以更加提高来自发光源的光通量的利用效率。
-
-
-
-
-
-
-
-
-
搜索结果
36 条记录 (耗时 0.019 秒)
