Achromatic polarization rotator
    9.
    发明授权
    Achromatic polarization rotator 失效
    高精度偏振旋转器

    公开(公告)号:US3574441A

    公开(公告)日:1971-04-13

    申请号:US3574441D

    申请日:1968-11-22

    Applicant: IBM

    CPC classification number: G02F1/0136 G02F1/0322

    Abstract: Apparatus is provided for effecting controlled alterations in the polarization of a multiwavelength beam of radiation. Plural stress responsive elements are arranged in cascade to receive the radiation from a source; the elements being arranged in differing predetermined directions with respect to the polarization of the radiation. Dependent on the stress applied to the elements, the apparatus is tunable for bandwidth response. When stress is applied, the apparatus operates to provide a second state of operation.

    Optical logic device for position-encoding a light beam
    10.
    发明授权
    Optical logic device for position-encoding a light beam 失效
    用于位置编码光束的光学逻辑器件

    公开(公告)号:US3554634A

    公开(公告)日:1971-01-12

    申请号:US3554634D

    申请日:1965-12-23

    Applicant: IBM

    CPC classification number: G02F1/31 G02F3/00

    Abstract: A LIGHT BEAM IS DIGITALLY DEFLECTED TO SELECTED ONES OF A PLURALITY OF DISCRETE POSITIONS IN ACCORDANCE WITH A LOGICAL FUNCTION WHICH CONTROLS THE OPERATION OF THE BEAM DEFLECTING MEANS. OPTICAL ENCODING MEANS UNIQUELY ENCODE A CHARACTERISTIC OF THE BEAM FOR EACH DISCRETE POSITION. WHEN THE LIGHT BEAM IS POLYCHROMATIC, THE LIGHT BEAM IS PASSED THROUGH A DIFFERENT COMBINATION OF FILTERS AT EACH DISCRETE POSITION SO THAT THE BEAM CONTAINS A UNIQUE COMBINATION OF WAVELENGTHS AT EACH POSITION. WHEN

    THE LIGHT BEAM IS MONOCHROMATIC, THE BEAM MAY BE SPLIT INTO A UNIQUE COMBINATION OF PATHS FOR EACH DISCRETE POSITION AND THEN INTENSITY-ENDODED BY MASKS IN THE PATHS. A MONOCHROMATIC BEAM MAY ALSO BE DIRECTED TO A PROCESSED LIPPMANN FILM WHICH WILL REFLECT THE BEAM AT UNIQUE COMBINATIONS OF BRAGG ANGLES CORRESPONDING TO EACH DISCRETE POSITION.

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