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    Method and apparatus for stabilizing the phase of radiation
    2.
    发明授权
    Method and apparatus for stabilizing the phase of radiation 失效
    用于稳定辐射相的方法和装置

    公开(公告)号：US3632214A

    公开(公告)日：1972-01-04

    申请号：US3632214D

    申请日：1969-06-23

    Applicant: IBM

    Inventor： CHANG DAVID C ,  SCHOOLS RODMAN S ,  SINCERBOX GLENN T ,  TAO TIEN-YU

    IPC: G01B9/021 ,  G03H1/04 ,  H01S3/136 ,  G01B9/02 ,  G02B

    CPC classification number: G03H1/0248 ,  G03H2001/0489 ,  H01S3/136

    Abstract: Stabilization of the phase of the radiation utilized in a plural beam interferometric-type system is accomplished. Monitoring of the intensity of the interfering beams of radiation is performed so that a correction signal is generated. By applying the correction signal to control means, the speed of propagation of at least one of the radiation beams is altered to maintain a constant phase relationship.

    Abstract translation: 实现了在多光束干涉式系统中使用的辐射的相位的稳定化。 执行辐射干扰光束的强度的监视，从而产生校正信号。 通过将校正信号应用于控制装置，改变至少一个辐射束的传播速度以保持恒定的相位关系。

    Beam motion compensation in optical image transfer systems having moving parts
    4.
    发明授权
    Beam motion compensation in optical image transfer systems having moving parts 失效
    具有移动部件的光学图像传输系统中的光束运动补偿

    公开(公告)号：US3636838A

    公开(公告)日：1972-01-25

    申请号：US3636838D

    申请日：1969-04-04

    Applicant: IBM

    Inventor： CHANG DAVID C ,  LIPP JAMES

    IPC: B23K26/08 ,  G02B26/12 ,  G02B27/00 ,  H04N3/08 ,  B41B17/12

    CPC classification number: H04N3/08 ,  B23K26/08 ,  B23K2201/007 ,  G02B26/127 ,  G02B27/0025 ,  G02B27/0031

    Abstract: A static electro-optic crystal deflection element, subject to electrical control of refraction, is used as an inertialess compensating element in mechanically controlled projection systems for laser beams. Electrical signals derived from the moving parts of the control mechanism are applied to the crystal to produce compensating refractions of the laser coordinated with short increments of movement of the mechanism. In one application blurring effects associated with continuous rotation of a multifaceted deflection mirror in a photographic tracing system are nullified by electro-optic compensation. In another application distortion due to relative motion between a sensing laser and a rotating drum containing a series of hologram records is cancelled by electro-optic effects coordinated with individual record movements.

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