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1.发明授权
公开(公告)号：US5617203A
公开(公告)日：1997-04-01
申请号：US581224
申请日：1995-12-29
IPC分类号： G01N21/956 , G01N21/00 , G02B27/42
CPC分类号： G01N21/95623
摘要： In an optical detector, a light source irradiates coherent light onto an objective. A Fourier transform lens receives the light diffracted and scattered at the objective and Fourier transforms the light to generate a Fourier image, the Fourier image having a high intensity spectral component corresponding to the periodic pattern on the objective and a low intensity spectral component corresponding to the abnormal portion. In an optically-addressed spatial light modulator, each of the optically-addressing part and the light modulating part receives the Fourier image at the corresponding portions. A threshold driving controller controls the spatial light modulator in its threshold operation so as to change a state in the light modulating part at a region where the high intensity spectral component of the Fourier image is incident while preventing the state from being changed in the light modulating part at a region where the low intensity spectral component of the Fourier image is incident, the changed state in the light modulating part modulating the high intensity spectral component of the Fourier image incident in the light modulating part. Thus, the modulated high intensity spectral component is separated from the unmodulated low intensity spectral component.
摘要翻译： 在光学检测器中，光源将相干光照射到物镜上。 傅立叶变换透镜接收在物镜处衍射和散射的光，并且傅立叶变换光以产生付里叶图像，具有对应于物镜上的周期性图案的高强度光谱分量的傅里叶图像和对应于物镜的低强度光谱分量 异常部分。 在光寻址空间光调制器中，光寻址部分和光调制部分中的每一个在相应部分处接收付里叶图像。 阈值驱动控制器在其阈值操作中控制空间光调制器，以便改变在傅立叶图像的高强度频谱分量入射的区域中光调制部分中的状态，同时防止光调制中的状态改变 部分在傅里叶图像的低强度光谱分量入射的区域，调制部分调制入射在光调制部分中的傅立叶图像的高强度光谱分量的光调制部分中的改变状态。 因此，调制的高强度光谱分量与未调制的低强度光谱分量分离。
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公开(公告)号：US5841489A
公开(公告)日：1998-11-24
申请号：US99548
申请日：1993-07-30
申请人： Narihiro Yoshida , Naohisa Mukohzaka , Haruyoshi Toyoda , Terushige Hori , Yuji Kobayashi , Tsutomu Hara
发明人： Narihiro Yoshida , Naohisa Mukohzaka , Haruyoshi Toyoda , Terushige Hori , Yuji Kobayashi , Tsutomu Hara
CPC分类号： G06E3/005 , G02F1/135 , G03H1/2294 , G03H2225/25 , G03H2225/32
摘要： In a spatial light modulator of the present invention, a photoconductive layer formed of photoconductive material receives write light having a spatial distribution in its intensity and changes resistivity of the photoconductive material dependently on the spatial distribution in the intensity of the received write light. A liquid crystal layer formed of liquid crystal molecules of nematic phase receives read light and presents birefringence with respect to the received read light. An electric voltage is applied through the photoconductive layer and the liquid crystal layer to thereby produce an electric field in the liquid crystal layer. The photoconductive layer changes the electric field produced in the liquid crystal layer in accordance with the resistivity of the photoconductive material so as to electrically control the birefringence of the liquid crystal molecules. The liquid crystal layer modulates the received read light in accordance with the birefringence which is electrically controlled in accordance with the spatial distribution in the intensity of the write light received by the photoconductive layer.
摘要翻译： 在本发明的空间光调制器中，由感光材料形成的光电导层接收具有其强度空间分布的写入光，并且依赖于所接收的写入光的强度的空间分布来改变光电导材料的电阻率。 由向列相的液晶分子形成的液晶层接收读取的光并相对于所接收的读取光呈现双折射。 通过光电导层和液晶层施加电压，从而在液晶层中产生电场。 光电导层根据光电导材料的电阻率改变在液晶层中产生的电场，从而电控制液晶分子的双折射。 液晶层根据根据由光电导层接收的写入光的强度的空间分布进行电控制的双折射来调制接收到的读取光。
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3.发明授权
公开(公告)号：US5546181A
公开(公告)日：1996-08-13
申请号：US316478
申请日：1994-10-03
CPC分类号： G01N21/95623
摘要： In an optical detector, a light source irradiates coherent light onto an objective. A Fourier transform lens receives the light diffracted and scattered at the objective and Fourier transforms the light to generate a Fourier image, the Fourier image having a high intensity spectral component corresponding to the periodic pattern on the objective and a low intensity spectral component corresponding to the abnormal portion. In an optically-addressed spatial light modulator, each of the optically-addressing part and the light modulating part receives the Fourier image at the corresponding portions. A threshold driving controller controls the spatial light modulator in its threshold operation so as to change a state in the light modulating part at a region where the high intensity spectral component of the Fourier image is incident while preventing the state from being changed in the light modulating part at a region where the low intensity spectral component of the Fourier image is incident, the changed state in the light modulating part modulating the high intensity spectral component of the Fourier image incident in the light modulating part. Thus, the modulated high intensity spectral component is separated from the unmodulated low intensity spectral component.
摘要翻译： 在光学检测器中，光源将相干光照射到物镜上。 傅立叶变换透镜接收在物镜处衍射和散射的光，并且傅立叶变换光以产生付里叶图像，具有对应于物镜上的周期性图案的高强度光谱分量的傅里叶图像和对应于物镜的低强度光谱分量 异常部分。 在光寻址空间光调制器中，光寻址部分和光调制部分中的每一个在相应部分处接收付里叶图像。 阈值驱动控制器在其阈值操作中控制空间光调制器，以便改变在傅立叶图像的高强度频谱分量入射的区域中光调制部分中的状态，同时防止光调制中的状态改变 部分在傅里叶图像的低强度光谱分量入射的区域，调制部分调制入射在光调制部分中的傅立叶图像的高强度光谱分量的光调制部分中的改变状态。 因此，调制的高强度光谱分量与未调制的低强度光谱分量分离。
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4.发明授权Optical deformation measuring apparatus by double-writing speckle images into a spatial light modulator 失效光学变形测量装置通过将散斑图像双重写入空间光调制器
公开(公告)号：US5166742A
公开(公告)日：1992-11-24
申请号：US748884
申请日：1991-08-23
CPC分类号： G01B9/02094 , G01B11/162 , G01B9/02047 , G01B9/025
摘要： An object is typically illuminated by laser light, and reflected light carrying a speckle pattern is amplified by an image intensifier. First and second speckle patterns representing the object before and after its deformation, respectively are written by double writing into a ferroelectric liquid crystal spatial light modulator (FLC-SLM). The double-written image is read out from the FLC-SLM, and converted by a Fourier transform optical system into an output optical image, i.e., Young's fringe. The output optical image is detected by a photoelectric converter, and analyzed by an image processing device to determine a deformation of the object.
摘要翻译： 物体通常由激光照射，并且携带斑点图案的反射光被图像增强器放大。 分别通过双写写入铁电液晶空间光调制器（FLC-SLM）中的表示其变形前后物体的第一和第二散斑图案。 双写图像从FLC-SLM读出，并通过傅立叶变换光学系统转换为输出光学图像，即杨氏边缘。 输出光学图像由光电转换器检测，并由图像处理装置分析，以确定物体的变形。
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公开(公告)号：US06560001B1
公开(公告)日：2003-05-06
申请号：US10088199
申请日：2002-03-15
IPC分类号： G02F103
CPC分类号： G02F1/135 , G02F1/133362 , G03H1/2294 , G03H2225/22 , G03H2225/25 , G03H2225/60
摘要： A spatial light modulating device includes: an electrically-addressed type element for being addressed by electric signals representing information to be written, the electrically-addressed type element including an image display portion having a pixel structure, the electrically-addressed type element being inputted with write light; an optically-addressed type spatial light modulator including a thin film material portion and a pair of substrates, the thin film material portion being provided between the pair of substrates, the thin film material portion having an optical addressing layer and a light modulation layer which are provided one on the other, the optically-addressed type spatial light modulator being inputted with read light; and a compensation layer having a predetermined thickness and provided between the image display portion and the thin film material portion.
摘要翻译： 空间光调制装置包括：用于由表示要写入的信息的电信号寻址的电寻址型元件，电寻址型元件包括具有像素结构的图像显示部分，电寻址型元件被输入 写光; 包括薄膜材料部分和一对基板的光学寻址型空间光调制器，薄膜材料部分设置在该对基板之间，薄膜材料部分具有光寻址层和光调制层，它们是 光拾取型空间光调制器输入了读取光; 以及具有预定厚度并且设置在图像显示部分和薄膜材料部分之间的补偿层。
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公开(公告)号：US06348990B1
公开(公告)日：2002-02-19
申请号：US09719777
申请日：2000-12-18
IPC分类号： G02F103
CPC分类号： G02F1/135 , G02F2203/12
摘要： A signal image is transmitted by write light from a transmission type liquid crystal element 4 to an optically-addressed type parallel-aligned nematic-liquid-crystal spatial light modulator 6. The numerical aperture NAL of a relay lens 5, the pitch P of the pixel structure of the transmission type liquid crystal element 4, and the wavelength &lgr; of light from the write light source 1 are set with the condition 1/2P
摘要翻译： 信号图像通过写入光从透射型液晶元件4传输到光寻址型并行向列型液晶空间光调制器6.中继透镜5的数值孔径NAL，间距P 透射型液晶元件4的像素结构和来自写入光源1的光的波长长度被设置为条件1 / 2P
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7.发明授权Spatial light modulation device capable of arbitrarily selecting an input/output characteristic 失效能够任意选择输入/输出特性的空间光调制装置
公开(公告)号：US5170281A
公开(公告)日：1992-12-08
申请号：US682260
申请日：1991-04-08
申请人： Yuji Kobayashi , Tsutomu Hara , Haruyoshi Toyoda
发明人： Yuji Kobayashi , Tsutomu Hara , Haruyoshi Toyoda
IPC分类号： G02F1/03
CPC分类号： G02F1/0333
摘要： A spatial light modulator includes an electro-optic crystal plate and a mesh electrode for capturing secondary electrons emitted from the crystal plate. Primary electrons carrying an image corresponding to an input optical image are incident on the front surface of the crystal plate to write a charge pattern thereon. In a writing operation, a dc voltage and a ramp voltage is applied to the mesh electrode and the back surface of the crystal plate, respectively. The dc voltage and a variation range of the ramp voltage are shifted to obtain a desired input/output characteristic of the device. Alternatively, a decreasing rate of the ramp voltage is changed to obtain a desired characteristic.
摘要翻译： 空间光调制器包括电光晶体板和用于捕获从晶体板发射的二次电子的网状电极。 携带与输入光学图像相对应的图像的一次电子入射到晶体板的前表面上以在其上写入电荷图案。 在写入操作中，直流电压和斜坡电压分别施加到网状电极和晶体板的背面。 直流电压和斜坡电压的变化范围被移动以获得设备的期望的输入/输出特性。 或者，改变斜坡电压的减小率以获得期望的特性。
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公开(公告)号：US5815598A
公开(公告)日：1998-09-29
申请号：US974674
申请日：1997-11-19
申请人： Tsutomu Hara , Yuji Kobayashi , Haruyoshi Toyoda
发明人： Tsutomu Hara , Yuji Kobayashi , Haruyoshi Toyoda
IPC分类号： G06K17/00 , G06F21/20 , G06K9/00 , G06K9/74 , G06K19/10 , G06T7/00 , G06K9/76 , G02F1/03 , G02F1/135
CPC分类号： G06K9/748 , G06K9/00087
摘要： In an individual identification apparatus, a hologram 11 recorded on a card is irradiated with laser light to read out a fingerprint image of a specific person. A finger of an arbitrary person to be identified with the specific person is irradiated with laser light to obtain a fingerprint image. Thus obtained fingerprint images are jointly written in a first SLM. Then, the joint image is read out and Fourier transformed to obtain a Joint Fourier Transform image, which is then written in a second SLM. The Joint Fourier Transform image is then read out and Fourier transformed to obtain a pair of output correlation peaks. A photodetector detects the intensity of the output correlation peaks and outputs a signal indicative of the intensity. A threshold processor compares the value of the signal with a predetermined threshold value to positively or negatively identify the arbitrary person with the specific person.
摘要翻译： 在个人识别装置中，用激光照射记录在卡上的全息图11，以读出特定人物的指纹图像。 用特定人物识别的任意人的手指用激光照射以获得指纹图像。 这样获得的指纹图像被共同写在第一SLM中。 然后，读出联合图像并进行傅立叶变换以获得联合傅立叶变换图像，然后将其写入第二SLM。 然后读出联合傅里叶变换图像，进行傅里叶变换，得到一对输出相关峰值。 光检测器检测输出相关峰的强度，并输出表示强度的信号。 阈值处理器将信号的值与预定的阈值进行比较，以肯定或否定地识别具体人的任意人。
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公开(公告)号：US07093123B1
公开(公告)日：2006-08-15
申请号：US10088631
申请日：2000-09-20
申请人： Teruo Hiruma , Tsutomu Hara , Haruyoshi Toyoda , Yasunori Igasaki
发明人： Teruo Hiruma , Tsutomu Hara , Haruyoshi Toyoda , Yasunori Igasaki
IPC分类号： G06F11/30
CPC分类号： G06E3/003
摘要： Predetermined hologram images 7a, 7b formed by three-dimensionally arranging a plurality of data items constituting data group information are read out from hologram devices 6a, 6b, and an image correlation calculation between the hologram images 7a, 7b is carried out by a Fourier transform optical system constituted by Fourier transform lenses 8, 13 and an optical address type SLM 9, whereby a correlation value of data groups is detected by a photodetector 14.
摘要翻译： 通过三维排列构成数据组信息的多个数据项形成的预定全息图像7 a，7 b从全息图装置6a，6b读出，并且全息图像7a，7b之间的图像相关计算是 由傅立叶变换透镜8,13和光地址型SLM 9构成的傅里叶变换光学系统进行，由此由光电检测器14检测数据组的相关值。
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公开(公告)号：US07057788B2
公开(公告)日：2006-06-06
申请号：US10415184
申请日：2001-10-30
IPC分类号： G02B26/00 , G02F1/03 , G02F1/01 , G02F1/1335
CPC分类号： G02B5/0833 , G02B26/06 , G02F1/133553 , G02F1/135 , G02F2001/1352 , G02F2203/26
摘要： A chirp compensation dielectric multilayer film mirror (10) reflects an incident light in a predetermined wavelength range and has group delay characteristics that prevent at least one of the dielectric multilayer film mirror (10) and a light transmission portion from applying a phase disturbance to an incident light within the predetermined wavelength range. Therefore, all the wavelength components of the incident light in the predetermined wavelength range are reflected by the chirp compensation dielectric multilayer-film mirror (10), and no additional undesired phase disturbance occurs by the dielectric multilayer film mirror (10) and the light transmission portion. Accordingly, a spatial light modulator (1) enables a desired modulation only by a liquid crystal layer without giving an additional undesired phase disturbance to an output light.
摘要翻译： 啁啾补偿电介质多层膜反射镜（10）将预定波长范围内的入射光反射，并且具有防止电介质多层膜反射镜（10）和光透射部分中的至少一个对至少一个电介质多层膜反射镜 入射光在预定波长范围内。 因此，预定波长范围内的入射光的所有波长分量被啁啾补偿电介质多层膜反射镜10所反射，并且电介质多层膜反射镜（10）和光传输 一部分。 因此，空间光调制器（1）仅通过液晶层实现期望的调制，而不会对输出光产生额外的不期望的相位干扰。
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