Apparatus for driving a semiconductor laser for use in a laser-beam
printer
    1.
    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。

    Optical scanning system
    2.
    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。

    Laser recorder with piezoelectric bimorph focal length vibrator
    5.
    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。

    Two-beam scanning optical system
    8.
    发明授权
    Two-beam scanning optical system 失效
    双光束扫描光学系统

    公开(公告)号:US4525024A

    公开(公告)日:1985-06-25

    申请号:US438772

    申请日:1982-11-03

    摘要: A two-beam scanning optical system comprising two laser beams each having a polarization characteristic, a first polarization beam splitter for compounding the two laser beams into one laser beam, a rotary polygonal mirror for scanning the compounded laser beam, a second polarization beam splitter for separating the compounded laser beam into two laser beams, and a lens system for focusing the separated laser beams onto a surface of a sensitive drum of a laser printer and onto a surface of an original document to be read, respectively, so that said two separated laser beams scan the respective surfaces of the sensitive drum and the original document.

    摘要翻译: 一种双光束扫描光学系统,包括两个具有偏振特性的激光束,用于将两个激光束复合成一个激光束的第一偏振分束器,用于扫描复合激光束的旋转多面镜,用于扫描复合激光束的第二偏振分束器 将复合激光束分离成两束激光束,以及透镜系统,用于将分离的激光束分别聚焦到激光打印机的感光鼓的表面上并分别到待读取的原稿的表面上,使得所述两个分离的激光束 激光束扫描感光鼓和原稿的各个表面。

    Optical integrated device, semiconductor laser module and optical transmitter
    9.
    发明授权
    Optical integrated device, semiconductor laser module and optical transmitter 失效
    光学集成器件,半导体激光器模块和光发射机

    公开(公告)号:US06678432B2

    公开(公告)日:2004-01-13

    申请号:US09785451

    申请日:2001-02-20

    IPC分类号: G02B613

    摘要: To resolve a problem in which in an optical output and wavelength monitor integrated type semiconductor laser module monolithically integrated in parallel with a plurality of semiconductor lasers, since light emitting positions of the respective semiconductor lasers differ, an allowable range of an optical incident position of the monitor is exceeded, the optical incident position of the monitor is confined in the allowable range by integrating backward optical waveguides for guiding backward beam of the respective semiconductor lasers to a narrow range at a backward end of a semiconductor chip along with the semiconductor lasers, whereby there can be easily realized a semiconductor laser module with a built-in optical monitor even in the case of the chip integrated with the plurality of semiconductor lasers and can be realized an inexpensive optical module having high function.

    摘要翻译: 为了解决在与多个半导体激光器并联地单片集成的光输出和波长监视器集成型半导体激光器模块中的问题,由于各个半导体激光器的发光位置不同,所以光入射位置的允许范围 监视器被超过,通过将反射光波导集成在半导体激光器的半导体芯片的后端,将各个半导体激光器的反向光束集成到窄范围内,将监视器的光学入射位置限制在允许范围内,由此 即使在与多个半导体激光器集成的芯片的情况下,也可以容易地实现具有内置光学监视器的半导体激光器模块,并且可以实现具有高功能的便宜的光学模块。

    Laser diode module
    10.
    发明授权
    Laser diode module 失效
    激光二极管模块

    公开(公告)号:US06597712B2

    公开(公告)日:2003-07-22

    申请号:US09934562

    申请日:2001-08-23

    IPC分类号: H01S313

    摘要: In a wavelength locking optical system, a resonator is formed between a wavelength deviation detection device and a facet of the laser diode, which makes a control signal unstable. A solution to this problem is to arrange polarization controlling elements between a wavelength deviation detection filter and a laser diode to stabilize the deviation signal, and to perform wavelength-locking with the stabilizer signal.

    摘要翻译: 在波长锁定光学系统中,在波长偏差检测装置和激光二极管的刻面之间形成谐振器,这使得控制信号不稳定。 该问题的解决方案是在波长偏差检测滤波器和激光二极管之间布置偏振控制元件以稳定偏差信号,并且利用稳定器信号执行波长锁定。