Scanning near field optical microscope based on the use of polarized
light
    71.
    发明授权
    Scanning near field optical microscope based on the use of polarized light 失效
    基于使用偏振光扫描近场光学显微镜

    公开(公告)号:US6046448A

    公开(公告)日:2000-04-04

    申请号:US82508

    申请日:1998-05-21

    摘要: An optical fiber probe which has a minute opening on the top of a sharpened tip is allowed to get close to a sample, and the probe is moved by a piezo actuator along x- and y-axis directions so that a minute spot beam emanating from the minute opening can scan over the sample. For circular polarization modulation to be incorporated in the process, a beam, before it is incident on the optical fiber probe, is given an optical delay changing at a frequency of p (Hz) by means of a piezo-optical modulator. A minute spot beam emanating from the minute opening passes through the sample to be received after the passage through an analyzer by a light receiving element. The output from the light receiving element is fed to a lock-in amplifier, p- and 2p-components are separated through lock-in rectification, and they are rendered images by a controller.

    摘要翻译: 在尖锐尖端顶部具有微小开口的光纤探针被允许靠近样品,并且探针通过压电致动器沿x轴和y轴方向移动,使得从 分钟打开可以扫描样品。 对于要纳入该过程的圆偏振调制,光束在其入射到光纤探针之前被给予通过压电光调制器以p(Hz)的频率改变的光学延迟。 从分钟开始发出的微小光束通过受光元件通过分析器后通过样品被接收。 来自光接收元件的输出被馈送到锁定放大器,p和2p分量通过锁定整流分离,并且它们由控制器渲染成图像。

    Optical pattern recognition apparatus
    72.
    发明授权
    Optical pattern recognition apparatus 失效
    光学图案识别装置

    公开(公告)号:US5309523A

    公开(公告)日:1994-05-03

    申请号:US931893

    申请日:1992-08-18

    CPC分类号: G06K9/748 G06E3/005

    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。

    Optical recording/reproducing method, recording medium used for optical recording and reproduction, and optical recording/reproducing apparatus
    73.
    发明授权
    Optical recording/reproducing method, recording medium used for optical recording and reproduction, and optical recording/reproducing apparatus 失效
    光学记录/再现方法,用于光学记录和再现的记录介质,以及光学记录/再现装置

    公开(公告)号:US06614746B1

    公开(公告)日:2003-09-02

    申请号:US09486690

    申请日:2000-06-07

    IPC分类号: G11B700

    摘要: High density data storage device has a support substrate and one or more different types of phosphors contained at each of plural regularly arranged microscopic regions of the support substrate. Each of the different types of phosphors has a fluorescence characteristic that may be faded by incident light having a different predetermined wavelength. The use of near-field light facilitates a reduction in size of the space required for each data bit. By providing a plurality of different types of phosphors at each of the microscopic regions, the amount of information storable at each bit space is rendered multi-valued to enable higher density recording.

    摘要翻译: 高密度数据存储装置具有支撑衬底和一个或多个不同类型的荧光体,其包含在支撑衬底的多个规则布置的微观区域中的每一个处。 每种不同类型的荧光体具有可以由具有不同预定波长的入射光褪色的荧光特性。 使用近场光有助于减小每个数据位所需的空间的大小。 通过在微观区域的每一个处提供多种不同类型的荧光体,可将存储在每个位空间的信息量多值化以实现更高密度的记录。

    Optical pattern recognition using multiple reference images
    74.
    发明授权
    Optical pattern recognition using multiple reference images 失效
    使用多个参考图像的光学图案识别

    公开(公告)号:US5175775A

    公开(公告)日:1992-12-29

    申请号:US734275

    申请日:1991-07-22

    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。

    Coordinate reader and method of detecting coordinates
    75.
    发明授权
    Coordinate reader and method of detecting coordinates 失效
    坐标读取器和坐标检测方法

    公开(公告)号:US5693913A

    公开(公告)日:1997-12-02

    申请号:US437550

    申请日:1995-05-09

    CPC分类号: G06F3/046

    摘要: A coordinate reader comprises a coordinate detector body having at least one excitation line, at least one detection line, an exciting circuit connected to the excitation line for supplying an exciting signal, a signal processing circuit connected to the detection line for receiving an induction signal generated in the detection line and outputting a signal containing amplitude information of the induction signal, and a control circuit for receiving the signal outputted by the signal processing unit and outputting an excitation control signal to the exciting circuit. A coordinate indicator indicates position information obtained from the induction signal induced in the detection line. A phase detecting circuit detects a phase difference between the excitation signal and the induction signal generated in the detection line. By this structure, an induction signal component due to the direct electromagnetic coupling between the excitation line and the detection line is eliminated, the required accuracy in calculation of the coordinates is ensured, and the read invalid region can be further reduced.

    摘要翻译: 坐标读取器包括具有至少一个激励线,至少一个检测线,连接到用于提供激励信号的激励线的激励电路的坐标检测器主体,连接到检测线的信号处理电路,用于接收产生的感应信号 在检测线上输出含有感应信号的振幅信息的信号,以及控制电路,用于接收由信号处理单元输出的信号,并向励磁电路输出励磁控制信号。 坐标指示器指示从在检测线中感应的感应信号获得的位置信息。 相位检测电路检测在检测线中产生的激励信号和感应信号之间的相位差。 通过这种结构,消除了由于激励线和检测线之间的直接电磁耦合引起的感应信号分量,从而确保了坐标计算所需的精度,并且可以进一步减小读取的无效区域。

    Optical pattern recognition system method of ferroelectric liquid
crystal spatial light modulator
    76.
    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

    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。

    Optical pattern recognition apparatus with coordinate conversion function
    77.
    发明授权
    Optical pattern recognition apparatus with coordinate conversion function 失效
    具有坐标转换功能的光学图案识别装置

    公开(公告)号:US5528702A

    公开(公告)日:1996-06-18

    申请号:US886331

    申请日:1992-05-20

    IPC分类号: G06E3/00 G06K9/74 G06K9/76

    CPC分类号: G06K9/748 G06E3/005

    摘要: An optical pattern recognition apparatus has an optical coordinate converter unit which simultaneously and in parallel converts an entered reference image and an entered input image from an entered coordinate system to a desired coordinate system to produce a coordinate-converted reference image and a coordinate-converted input image. A joint transform correlator receives the coordinate-converted reference image and the coordinate-converted input image and generates a correlation coefficient between the coordinate-converted reference image and the coordinate-converted input image so that a correlation between each entered reference and each entered input image is obtained to effect pattern recognition in real time. A feedback circuit normalizes the generated correlation coefficient between the coordinate-converted reference image and the coordinate-converted input image with a maximum correlation coefficient. The feedback circuit changes a subsequently generated correlation coefficient between the coordinate-converted reference image and the coordinate-converted input image depending on the normalized correlation coefficient so that, if the coordinate-converted reference image is obtained from a plurality of entered reference images, a particular entered reference image having the highest correlation with the entered input image is systematically obtained.

    摘要翻译: 光学图案识别装置具有光学坐标转换器单元,其同时且并行地将输入的参考图像和输入的输入图像从输入的坐标系转换为期望的坐标系,以产生坐标转换参考图像和坐标转换输入 图片。 联合变换相关器接收坐标变换参考图像和坐标转换输入图像,并且生成坐标变换参考图像与坐标转换输入图像之间的相关系数,使得每个输入的参考和每个输入的输入图像之间的相关性 获得实时模式识别。 反馈电路以坐标转换的参考图像和坐标转换的输入图像之间的相关系数最大化相关系数归一化。 反馈电路根据归一化相关系数改变坐标变换参考图像与坐标转换输入图像之间随后产生的相关系数,使得如果从多个输入的参考图像获得坐标转换的参考图像,则 系统地获得与输入的输入图像具有最高相关性的特定输入的参考图像。

    Optical correlator
    78.
    发明授权
    Optical correlator 失效
    光耦合器

    公开(公告)号:US5150229A

    公开(公告)日:1992-09-22

    申请号:US404325

    申请日:1989-09-07

    CPC分类号: G06E3/005

    摘要: An optical correlator according to the present invention generates a cross-correlation peak of two patterns of pictorial information to be compared. It generates pictorial patterns of a sum of the two patterns of pictorial information and of a difference between the two patterns of pictorial information by a phase conjugate waveform, transforms the pictorial patterns into first Fourier transform images, generates a pictorial pattern of a difference between an intensity distribution of the first Fourier transform images by the phase conjugate waveform, and transforms the pictorial pattern of a difference between an intensity distribution of the first Fourier transform images into second Fourier transform images. The optical correlator detects a cross-correlation peak of the two patterns of pictorial information for comparison at a high S/N ratio.