Optical scanning system
    1.
    发明授权
    Optical scanning system 失效
    光学扫描系统

    公开(公告)号:US4620768A

    公开(公告)日:1986-11-04

    申请号:US494076

    申请日:1983-05-12

    摘要: An optical scanning system wherein a light beam from a laser source is reflected by a rotating polygonal mirror and focused by a scanning lens into a scanning beam spot on the drum surface. A cylindrical lens disposed between the scanning lens and the drum for correcting the unevenness of the scanning line pitch caused by the incline of the each facet of the polygonal mirror has a curvature in the scanning direction of the beam so that optimal focal points of the scanning beam spot align on a straight line.

    摘要翻译: 一种光学扫描系统,其中来自激光源的光束被旋转的多面镜反射并被扫描透镜聚焦到鼓表面上的扫描光束点中。 设置在扫描透镜和滚筒之间的柱面透镜,用于校正由多面镜的每个面的倾斜引起的扫描线间距的不均匀性,在该光束的扫描方向上具有曲率,使得扫描的最佳焦点 光束点在直线上对齐。

    Apparatus for driving a semiconductor laser for use in a laser-beam
printer
    2.
    发明授权
    Apparatus for driving a semiconductor laser for use in a laser-beam printer 失效
    用于驱动用于激光束打印机的半导体激光器的装置

    公开(公告)号:US4513300A

    公开(公告)日:1985-04-23

    申请号:US504380

    申请日:1983-06-14

    CPC分类号: G06K15/1214

    摘要: An apparatus for driving a semiconductor laser for use in a laser-beam printer, in which a laser beam from the laser is deflected so as to scan a light-sensitive drum and a light-sensitive detector placed in the vicinity of one edge of the drum, comprises a first device for determining the operation level for the laser when it scans the drum to record information thereon, a second device for determining the operation level for the laser when it scans the detector to provide a scanning start pulse signal and a controller for controlling the first and second devices so that they are alternately enabled to determine the intensity of the laser beam depending upon whether the drum or the detector is scanned, whereby the intensity of the laser beam is allowed to be adjusted in accordance with the varying light-sensitivity of the drum without fluctuating the instant of generation of the scanning start pulse signal.

    摘要翻译: 一种用于驱动用于激光束打印机的半导体激光器的装置,其中来自激光器的激光束被偏转,以扫描感光鼓和感光探测器,该感光鼓位于该激光束的一个边缘附近 鼓,包括第一装置,用于当扫描滚筒以在其上记录信息时确定激光器的操作电平;第二装置,用于当扫描激光器扫描检测器以提供扫描开始脉冲信号时确定激光器的操作电平;以及控制器 用于控制第一和第二装置,使得它们交替地能够根据鼓或检测器是否被扫描来确定激光束的强度,从而允许根据变化的光来调整激光束的强度 鼓的灵敏度,而不会产生扫描开始脉冲信号的瞬间。

    Wavelength scanning interferometry and interferometer employing laser
diode
    4.
    发明授权
    Wavelength scanning interferometry and interferometer employing laser diode 失效
    采用激光二极管的波长扫描干涉仪和干涉仪

    公开(公告)号:US4759628A

    公开(公告)日:1988-07-26

    申请号:US826341

    申请日:1986-02-05

    CPC分类号: G01J9/04 G01J3/45

    摘要: In an interferometry wherein a light beam from a light source is divided in two, one of which is used as a reference beam and the other beam is used as an inspecting beam, and the two beams are projected again on an identical plane so as to form an interference pattern; a wavelength scanning type laser diode interferometry characterized in that a laser diode is employed as the light source, and that an injection current of the laser diode is modulated thereby to scan a wavelength of the laser diode and to change an intensity distribution of the interference pattern.

    摘要翻译: 在其中来自光源的光束被分成两部分的干涉测量中,其中一个用作参考光束,另一个光束用作检查光束,并且两个光束再次投射在相同的平面上,以便 形成干扰模式; 波长扫描型激光二极管干涉测量法,其特征在于使用激光二极管作为光源,并且调制激光二极管的注入电流,从而扫描激光二极管的波长并改变干涉图案的强度分布 。

    Laser recorder with piezoelectric bimorph focal length vibrator
    6.
    发明授权
    Laser recorder with piezoelectric bimorph focal length vibrator 失效
    激光记录仪采用压电双压电晶片振镜

    公开(公告)号:US4274101A

    公开(公告)日:1981-06-16

    申请号:US76427

    申请日:1979-09-17

    摘要: In a laser beam recording apparatus comprising a laser source, an optical modulator for modulating the intensity of the laser beam from the laser source in response to an electrical signal, an optical scanner for deflecting the modulated laser beam, a recording medium on which the deflected laser beam is recorded, and a optical system for guiding the emitted laser beam from the laser source to recording medium, an automatic focusing device is provided for vibrating a lens or mirror in the optical system in synchronism with the scanning provided by the optical scanner, thereby converging the deflected laser beam into a small spot at any position on the recording medium.

    摘要翻译: 在包括激光源的激光束记录装置中,响应于电信号调制来自激光源的激光束的强度的光调制器,用于偏转调制的激光束的光学扫描器,其上偏转的记录介质 记录激光束,并且提供用于将发射的激光束从激光源引导到记录介质的光学系统,自动聚焦装置用于与由光学扫描器提供的扫描同步地在光学系统中振动透镜或反射镜, 从而将偏转的激光束会聚到记录介质上的任何位置的小斑点。