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    • 1. 发明申请
    • OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS
    • 光学扫描装置和图像形成装置
    • US20110286067A1
    • 2011-11-24
    • US13106209
    • 2011-05-12
    • Akihiro IWAMATSUKenichi YoshimuraKohei ShimizuTokiko InoueMitsuru Nakajima
    • Akihiro IWAMATSUKenichi YoshimuraKohei ShimizuTokiko InoueMitsuru Nakajima
    • G02B26/10
    • G02B26/127G02F1/29
    • An optical scanning device includes a light source; a scanning unit to deflect/scan a laser beam from the light source; an imaging optical system to focus the deflected and scanned laser beam to a scan-target surface; an electro-optic element to electrically change a refractive index thereof; a controller to control the refractive index of the electro-optic element to adjust deflection amount of the laser beam; and a positional shift detecting unit, disposed away from the light path, to detect a positional shift of the incident laser beam from an ideal position in a sub-scanning direction. The device further includes a beam splitting element, and the controller adjusts a deflection amount of the laser beam from the electro-optic element based on a detection result by the positional shift detecting unit and corrects a positional shift in the sub-scanning direction of the laser beam on the scan-target surface.
    • 光学扫描装置包括光源; 扫描单元,用于偏转/扫描来自光源的激光束; 成像光学系统,用于将偏转和扫描的激光束聚焦到扫描目标表面; 电光元件,用于电变化其折射率; 控制器,用于控制电光元件的折射率以调节激光束的偏转量; 以及位置偏移检测单元,其远离光路设置,以检测入射激光束在副扫描方向上的理想位置的位置偏移。 该装置还包括分束元件,并且控制器基于位置偏移检测单元的检测结果来调整来自电光元件的激光束的偏转量,并校正副扫描方向上的位置偏移 激光束在扫描目标表面上。
    • 3. 发明授权
    • Optical scanning device and image forming apparatus
    • 光学扫描装置和图像形成装置
    • US08179580B2
    • 2012-05-15
    • US13106209
    • 2011-05-12
    • Akihiro IwamatsuKenichi YoshimuraKohei ShimizuTokiko InoueMitsuru Nakajima
    • Akihiro IwamatsuKenichi YoshimuraKohei ShimizuTokiko InoueMitsuru Nakajima
    • G02B26/08
    • G02B26/127G02F1/29
    • An optical scanning device includes a light source; a scanning unit to deflect/scan a laser beam from the light source; an imaging optical system to focus the deflected and scanned laser beam to a scan-target surface; an electro-optic element to electrically change a refractive index thereof; a controller to control the refractive index of the electro-optic element to adjust deflection amount of the laser beam; and a positional shift detecting unit, disposed away from the light path, to detect a positional shift of the incident laser beam from an ideal position in a sub-scanning direction. The device further includes a beam splitting element, and the controller adjusts a deflection amount of the laser beam from the electro-optic element based on a detection result by the positional shift detecting unit and corrects a positional shift in the sub-scanning direction of the laser beam on the scan-target surface.
    • 光学扫描装置包括光源; 扫描单元,用于偏转/扫描来自光源的激光束; 成像光学系统,用于将偏转和扫描的激光束聚焦到扫描目标表面; 电光元件,用于电变化其折射率; 控制器,用于控制电光元件的折射率以调节激光束的偏转量; 以及位置偏移检测单元,其远离光路设置,以检测入射激光束在副扫描方向上的理想位置的位置偏移。 该装置还包括分束元件,并且控制器基于位置偏移检测单元的检测结果调整来自电光元件的激光束的偏转量,并校正副扫描方向上的位置偏移 激光束在扫描目标表面上。
    • 8. 发明授权
    • Laser radar device
    • 激光雷达设备
    • US09188674B2
    • 2015-11-17
    • US13930030
    • 2013-06-28
    • Shuichi SuzukiMitsuru NakajimaKenichi YoshimuraShigeaki ImaiTadashi NakamuraHiroyoshi Funato
    • Shuichi SuzukiMitsuru NakajimaKenichi YoshimuraShigeaki ImaiTadashi NakamuraHiroyoshi Funato
    • G01C3/08G01S17/02G01S7/481
    • G01S17/02G01S7/4817
    • Disclosed is a laser radar device including a modulated light beam generator that emits light beams to a target, a photodetector that receives reflected light; a reflected light condenser that condenses the reflected light; a rotator that rotates around a rotation axis; and mirrors included in the rotator that scan the light beams, and guide the reflected light to the reflected light condenser, wherein an angular detection range in a vertical direction is divided into a plurality of layers, wherein mirror surfaces of the mirrors are tilted by corresponding tilt angles relative to the rotation axis, the tilt angles being different from each other, wherein the modulated light beam generator emits the light beams in the vertical direction, the light beams having different emission angles, and wherein a difference between the emission angles corresponds to the angular detection range of one layer in the vertical direction.
    • 公开了一种激光雷达装置,其包括向目标发射光束的调制光束发生器,接收反射光的光电检测器; 聚光反射光的反射光聚光器; 围绕旋转轴旋转的旋转体; 以及包括在扫描光束的旋转体中的反射镜,并将反射光引导到反射光聚光器,其中垂直方向上的角度检测范围被分成多个层,其中反射镜的镜面被相应的 相对于旋转轴的倾斜角度,倾斜角度彼此不同,其中调制光束发生器沿垂直方向发射光束,光束具有不同的发射角,并且其中发射角之间的差对应于 垂直方向上一层的角度检测范围。