公开(公告)号：US5815222A

公开(公告)日：1998-09-29

申请号：US405602

申请日：1995-03-17

申请人： Takahiro Matsuda ,  Shin Eguchi ,  Yoshihiro Mizuno ,  Masato Nakashima ,  Manabu Ishimoto ,  Hirokazu Aritake ,  Noriko Sato

发明人： Takahiro Matsuda ,  Shin Eguchi ,  Yoshihiro Mizuno ,  Masato Nakashima ,  Manabu Ishimoto ,  Hirokazu Aritake ,  Noriko Sato

IPC分类号： G02B5/18 ,  G02B27/22 ,  G02F1/29 ,  G06K7/10 ,  G02F1/139 ,  G02F1/1335

CPC分类号： G06K7/10663 ,  G02B27/2228 ,  G02B5/1828 ,  G02F1/292 ,  G06K7/10594 ,  G06K2207/1015

摘要： An apparatus for deflecting light of the present invention comprises: (a) at least one pair of transference electrodes arranged facing one another; (b) a drive circuit which applies a voltage among the transference electrodes; and (c) a liquid crystal which is inserted among the transference electrodes, and whose parallel stripes that function as a diffraction grating when the voltage is applied among the transference electrodes are produced at a pitch corresponding to the applied voltage. The light can be scanned if a diffracted light by the apparatus for deflecting light is converted into a scanning light and a voltage value is changed temporally to apply the voltage among the transference electrodes. In a device for reading information, the scanning light is reflected in a bar code and the reflected light is detected by an apparatus for detecting light. In a device for stereoscopic display of the present invention, the apparatus for deflecting light is used as beam deflection means for deflecting the light beamed from a picture element which organizes the pictures of the picture display means.

公开(公告)号：US06339445B1

公开(公告)日：2002-01-15

申请号：US09098716

申请日：1998-06-17

申请人： Takahiro Matsuda ,  Shin Eguchi ,  Yoshihiro Mizuno ,  Masato Nakashima ,  Manabu Ishimoto ,  Hirokazu Aritake ,  Noriko Sato

发明人： Takahiro Matsuda ,  Shin Eguchi ,  Yoshihiro Mizuno ,  Masato Nakashima ,  Manabu Ishimoto ,  Hirokazu Aritake ,  Noriko Sato

IPC分类号： H04N718

CPC分类号： G06K7/10663 ,  G02B5/1828 ,  G02B27/2228 ,  G02F1/292 ,  G06K7/10594 ,  G06K2207/1015

摘要： An apparatus for deflecting light of the present invention comprises: (a) at least one pair of transference electrodes arranged facing one another; (b) a drive circuit which applies a voltage among the transference electrodes; and (c) a liquid crystal which is inserted among the transference electrodes, and whose parallel stripes that function as a diffraction grating when the voltage is applied among the transference electrodes are produced at a pitch corresponding to the applied voltage. The light can be scanned if a diffracted light by the apparatus for deflecting light is converted into a scanning light and a voltage value is changed temporally to apply the voltage among the transference electrodes. In a device for reading information, the scanning light is reflected in a bar code and the reflected light is detected by an apparatus for detecting light. In a device for stereoscopic display of the present invention, the apparatus for deflecting light is used as beam deflection means for deflecting the light beamed from a picture element which organizes the pictures of the picture display means.

摘要翻译： 本发明的偏转光装置包括：（a）至少一对彼此相对布置的传输电极; （b）在所述转移电极之间施加电压的驱动电路; 以及（c）插入在所述转移电极之间的液晶，并且以与所施加的电压相对应的间距产生在所述转移电极之间施加电压时用作衍射光栅的平行条纹。 如果通过用于偏转光的装置的衍射光被转换成扫描光并且电压值在时间上改变以在传送电极之间施加电压，则可以扫描光。 在用于读取信息的装置中，扫描光被反映在条形码中，并且用于检测光的装置检测反射光。 在本发明的立体显示装置中，用于偏转光的装置被用作用于使组装图像显示装置的图像的图像的光束偏转的光束偏转装置。

公开(公告)号：US5955720A

公开(公告)日：1999-09-21

申请号：US619244

申请日：1996-03-21

申请人： Duanfeng He ,  Richard Isaac ,  Mehul Patel ,  Daniel Brown

发明人： Duanfeng He ,  Richard Isaac ,  Mehul Patel ,  Daniel Brown

IPC分类号： G06K7/10

CPC分类号： G06K7/10603 ,  G06K7/10663 ,  G06K7/10693 ,  G06K7/10702 ,  G06K7/10801 ,  G06K2207/1015

摘要： A semi-retroreflective optical scanning system has an optical scanning element which directs a scanning light beam via a stationary holographic optical element in a scan path across indicia to be read. Light from the indicia is collected by an optical collector, such as a lens or a mirror, which focuses it onto a small optical detector via the scanning element. The field of view of the optical detector scans across the indicia in synchronization with the outgoing scanning beam from the holographic optical element. Since the incoming reflected light is not limited by the aperture of the scanning element, the signal-to-noise ratio remains high even when a small scanning element is used. In a further embodiment the light source, scanning element collector and detector are provided in a common plane, the collector and scanning element sharing a common optical axis and a light source being provided substantially off axis to allow reduction in the scanning element size. In a further aspect of the invention a solid state reader is provided capable of establishing the distance to the target by sensing the exact position on the detector at which the target is imaged. According to yet a further aspect of the invention the problem of specular blinding is overcome by providing a plurality of sensors activated in a dynamic on-off sequence, for example a random sequence.

摘要翻译： 半回光光学扫描系统具有光学扫描元件，其通过经过待读取的标记的扫描路径中的静止全息光学元件引导扫描光束。 来自标记的光由诸如透镜或反射镜的光学收集器收集，其通过扫描元件将其聚焦到小型光学检测器上。 光学检测器的视野与来自全息光学元件的输出扫描光束同步地扫描标记。 由于入射的反射光不受扫描元件的孔径的限制，即使使用小的扫描元件，信噪比也保持较高。 在另一个实施例中，光源，扫描元件收集器和检测器设置在公共平面中，集电器和扫描元件共享公共光轴，光源基本上设置在离轴上，以允许减小扫描元件尺寸。 在本发明的另一方面，提供了一种固态读取器，其能够通过感测检测器上目标物被成像的确切位置来建立与目标的距离。 根据本发明的另一方面，通过提供在动态开关序列（例如随机序列）中激活的多个传感器来克服镜面盲法的问题。

公开(公告)号：US5305125A

公开(公告)日：1994-04-19

申请号：US4116

申请日：1993-01-13

申请人： Ke-Ou Peng

发明人： Ke-Ou Peng

IPC分类号： G02B5/32 ,  G02B26/10 ,  G06K1/12 ,  G06K7/10 ,  G03H1/04

CPC分类号： G03H1/04 ,  G02B26/106 ,  G02B5/32 ,  G06K1/126 ,  G06K7/10663 ,  G03H2001/0439 ,  G06K2207/1013 ,  G06K2207/1015

摘要： A method of recording holograms for use in optical scanners comprises the steps of generating a reference beam by means of a reference source, generating an object beam by means of an object source, and illuminating a photosensitive surface with both said object beam and said reference beam, wherein said object beam is divergent in a first direction and non-divergent in a second direction.

摘要翻译： 记录用于光学扫描器的全息图的方法包括以下步骤：借助于参考源产生参考光束，通过物体源产生物体光束，并用所述物体光束和所述参考光束照射光敏表面 其中所述物体光束在第一方向上是发散的，而在第二方向上是非发散的。

公开(公告)号：US20020060659A1

公开(公告)日：2002-05-23

申请号：US09995569

申请日：2001-11-29

申请人： Fujitsu Limited

发明人： Takahiro Matsuda ,  Shin Eguchi ,  Yoshihiro Mizuno ,  Masato Nakashima ,  Manabu Ishimoto ,  Hirokazu Aritake ,  Noriko Sato

IPC分类号： G09G003/36

CPC分类号： G06K7/10663 ,  G02B5/1828 ,  G02B27/2228 ,  G02F1/292 ,  G06K7/10594 ,  G06K2207/1015

摘要： An apparatus for deflecting light of the present invention comprises: (a) at least one pair of transference electrodes arranged facing one another; (b) a drive circuit which applies a voltage among the transference electrodes; and (c) a liquid crystal which is inserted among the transference electrodes, and whose parallel stripes that function as a diffraction grating when the voltage is applied among the transference electrodes are produced at a pitch corresponding to the applied voltage. The light can be scanned if a diffracted light by the apparatus for deflecting light is converted into a scanning light and a voltage value is changed temporally to apply the voltage among the transference electrodes. In a device for reading information, the scanning light is reflected in a bar code and the reflected light is detected by an apparatus for detecting light. In a device for stereoscopic display of the present invention, the apparatus for deflecting light is used as beam deflection means for deflecting the light beamed from a picture element which organizes the pictures of the picture display means.

公开(公告)号：US6154260A

公开(公告)日：2000-11-28

申请号：US98713

申请日：1998-06-17

申请人： Takahiro Matsuda ,  Shin Eguchi ,  Yoshihiro Mizuno ,  Masato Nakashima ,  Manabu Ishimoto ,  Hirokazu Aritake ,  Noriko Sato

发明人： Takahiro Matsuda ,  Shin Eguchi ,  Yoshihiro Mizuno ,  Masato Nakashima ,  Manabu Ishimoto ,  Hirokazu Aritake ,  Noriko Sato

IPC分类号： G02B5/18 ,  G02B27/22 ,  G02F1/29 ,  G06K7/10 ,  G02F1/139

CPC分类号： G06K7/10663 ,  G02B27/2228 ,  G02B5/1828 ,  G02F1/292 ,  G06K7/10594 ,  G06K2207/1015

摘要： An apparatus for deflecting light of the present invention comprises: (a) at least one pair of transference electrodes arranged facing one another; (b) a drive circuit which applies a voltage among the transference electrodes; and (c) a liquid crystal which is inserted among the transference electrodes, and whose parallel stripes that function as a diffraction grating when the voltage is applied among the transference electrodes are produced at a pitch corresponding to the applied voltage. The light can be scanned if a diffracted light by the apparatus for deflecting light is converted into a scanning light and a voltage value is changed temporally to apply the voltage among the transference electrodes. In a device for reading information, the scanning light is reflected in a bar code and the reflected light is detected by an apparatus for detecting light. In a device for stereoscopic display of the present invention, the apparatus for deflecting light is used as beam deflection means for deflecting the light beamed from a picture element which organizes the pictures of the picture display means.

摘要翻译： 本发明的偏转光装置包括：（a）至少一对彼此相对布置的传输电极; （b）在所述转移电极之间施加电压的驱动电路; 以及（c）插入在所述转移电极之间的液晶，并且以与所施加的电压相对应的间距产生在所述转移电极之间施加电压时用作衍射光栅的平行条纹。 如果通过用于偏转光的装置的衍射光被转换成扫描光并且电压值在时间上改变以在传送电极之间施加电压，则可以扫描光。 在用于读取信息的装置中，扫描光被反映在条形码中，并且用于检测光的装置检测反射光。 在本发明的立体显示装置中，用于偏转光的装置被用作用于使组装图像显示装置的图像的图像的光束偏转的光束偏转装置。