公开(公告)号：WO1993001514A1

公开(公告)日：1993-01-21

申请号：PCT/US1992005465

申请日：1992-06-25

申请人： EASTMAN KODAK COMPANY

发明人： EASTMAN KODAK COMPANY ,  RODDY, James, E. ,  NARAYAN, Badhri ,  CUFFNEY, Robert, H. ,  KLEES, Kevin, J. ,  VOCI, Laurie, L.

IPC分类号： G02B26/10

CPC分类号： G02B7/182 ,  G02B26/106

摘要： A three-color laser scanner using a holographically-generated plane linear grating disk (hologon). The disk includes peripherally-arranged facets having identical multiplexed diffraction gratings. Each multiplexed grating is formed from plural superimposed interference patterns accumulated by multiple exposures to light from a single monochromatic laser beam source. The multiplexed grating is optimized to diffract certain light wavelengths in a single, multichromatic (plural wavelength) input laser beam. The diffracted output beam comprises respective wavelength beam components that simultaneously scan in collinear fashion. Modulation of the plural wavelength components in the incident beam allows the output beam to scan expose a multicolor image at the image plane.

公开(公告)号：WO1992015028A1

公开(公告)日：1992-09-03

申请号：PCT/US1992001261

申请日：1992-02-14

申请人： HOLOGRAPHIX, INC.

发明人： HOLOGRAPHIX, INC. ,  CLAY, Burton, R. ,  ROWE, David, M.

IPC分类号： G02B05/32

CPC分类号： G02B26/106

摘要： A system that provides a structure which makes use of a recording geometry in which no significant Seidel induced aberrations arise. The recording geometry results in a pattern recorded on a photosensitive surface (11), thereby creating the hologram on the scanning disc (11a). Reconstruction of the recorded object may be made by exposing the scanning disc (11a) to substantially monochromatic light (13). The hologram on the scanning disc (11a) not only directs the reconstruction beam, but also focuses it. An optical element (95) may be used during reconstruction to correct for bow and linearity, and also optimize flatness of the focal plane. Reconstruction also involves achromatization, or correction of beam placement because of mode hops or drift in laser frequency. The reconstruction comprises both pre-scan holograms (108) and post-scan holograms (101). Recording of the post-scan hologram (101) is achieved with a plurality of lenses (11, 12) which possess different collimating properties in the vertical and horizontal planes. Further, a method is provided in which a scanning disc (183) may be replicated on various transparent materials.

公开(公告)号：WO1992005515A1

公开(公告)日：1992-04-02

申请号：PCT/US1991006608

申请日：1991-09-12

申请人： METROLOGIC INSTRUMENTS, INC.

发明人： METROLOGIC INSTRUMENTS, INC. ,  ROCKSTEIN, George, B. ,  WILZ, David, M., Sr. ,  BUBNOSKI, David, P. ,  KNOWLES, Carl, H.

IPC分类号： G06K07/10

CPC分类号： G06K7/10871 ,  G02B26/106 ,  G06K7/10 ,  G06K7/10564 ,  G06K7/10584 ,  G06K7/10594 ,  G06K7/10603 ,  G06K7/10663 ,  G06K7/10673 ,  G06K7/10693 ,  G06K7/10702 ,  G06K7/10792 ,  G06K7/10801 ,  G06K7/10811 ,  G06K7/10851 ,  G06K7/10861 ,  G06K7/10881 ,  G06K7/10891 ,  G06K7/109 ,  G06K7/14 ,  G06K7/1443 ,  G06K17/0022 ,  G06K2207/1012 ,  G06K2207/1016 ,  G06K2207/1017 ,  G06K2207/1018

摘要： An automatic bar code symbol reading system comprising components for carrying out object detection (2), scanning (3), photoreceiving (4), A/D conversion (6), bar code presence detection (5), symbol decoding (7), data format conversion (8), data storage (9) and data transmission functions (10). In general, the bar code symbol reading device includes a control system having a plurality of control centers (11), (12), (13) that control the operation of the system components in accordance with preselected system control operations. Each of the control centers are responsive to control activation signals generated by certain of the system components upon the occurrence of predefined conditions. Certain of the control centers are capable of overriding other control centers to provide diverse control capabilities which facilitates execution of intelligent operations and power consumption, during bar code symbol reading.

公开(公告)号：WO1985000667A1

公开(公告)日：1985-02-14

申请号：PCT/US1984001201

申请日：1984-07-30

申请人： NCR CORPORATION

发明人： NCR CORPORATION ,  FERRANTE, Ronald, A.

IPC分类号： G02B05/20

CPC分类号： G02B27/0927 ,  G02B5/205 ,  G02B5/32 ,  G02B26/106 ,  G02B27/09 ,  G02B27/0944

摘要： A method for producing a coherent light beam of uniform intensity wherein a photographic film (50), positioned at a predetermined distance (d) from a light source (52), is exposed to a beam of coherent light of nonuniform intensity and varying from point to point over its cross-sectional area in accordance with a predetermined Gaussian function, emitted from said source (52). The film is then developed and reinserted at said predetermined distance (d) from the light source (52) to act as a filter selectively absorbing portions of the light passing therethrough. Such light beam of uniform intensity is advantageously used for producing holograms utilized in hologram scanning apparatus.

摘要翻译： 一种用于制造均匀强度的相干光束的方法，其中定位在距光源（52）预定距离（d）的照相胶片（50）暴露于不均匀强度的一束相干光并且从点 根据从所述源（52）发射的预定高斯函数指向其横截面积。 然后将膜从光源（52）以所述预定距离（d）显影并重新插入，以充当选择性地吸收通过其中的光的部分的滤光器。 这种均匀强度的光束有利地用于制造全息扫描装置中使用的全息图。