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    • 1. 发明授权
    • Optical scanning device and image forming apparatus
    • 光学扫描装置和图像形成装置
    • US08848009B2
    • 2014-09-30
    • US13624182
    • 2012-09-21
    • Naoto WatanabeToshiaki TokitaKohji SakaiNobuaki Kubo
    • Naoto WatanabeToshiaki TokitaKohji SakaiNobuaki Kubo
    • B41J2/385B41J2/435B41J15/14B41J27/00G02B26/08G02B26/10G02B26/12B41J2/47G02B27/00
    • G02B26/123B41J2/473G02B27/0018
    • An optical scanning device scanning scan target surfaces in a first direction with light includes: a light source emitting first and second light beams corresponding to two of the scan target surfaces; an optical deflector including a reflection surface on which the emitted first and second light beams are obliquely incident while being separated from each other in a second direction perpendicular to the first direction, and deflecting the first and second light beams; a scanning lens disposed on respective optical paths of the deflected first and second light beams; and a branching optical element transmitting therethrough most of the first light beam transmitted through the scanning lens, and reflecting most of the second light beam transmitted through the scanning lens. The deflected first and second light beams intersect between the optical deflector and the branching optical element, when projected on a plane perpendicular to the first direction.
    • 用光扫描第一方向的扫描目标表面的光扫描装置包括:发射对应于两个扫描目标表面的第一和第二光束的光源; 光偏转器,其包括反射面,发射的第一光束和第二光束在垂直于第一方向的第二方向上彼此分离并倾斜入射,并且偏转第一和第二光束; 设置在偏转的第一和第二光束的相应光路上的扫描透镜; 以及分支光学元件,透射通过扫描透镜的第一光束的大部分,并且反射透过扫描透镜的大部分第二光束。 当投影在垂直于第一方向的平面上时,偏转的第一和第二光束在光学偏转器和分支光学元件之间相交。
    • 4. 发明授权
    • Optical scanning device and image forming apparatus
    • 光学扫描装置和图像形成装置
    • US08922863B2
    • 2014-12-30
    • US13608216
    • 2012-09-10
    • Toshiaki TokitaNobuaki KuboNaoto WatanabeKohji Sakai
    • Toshiaki TokitaNobuaki KuboNaoto WatanabeKohji Sakai
    • G02B26/08B41J2/47G03G15/043G02B26/12G02B3/00G02B5/30
    • B41J2/473G02B3/0075G02B5/3058G02B26/123G03G15/0435
    • An optical scanning device separately scanning plural scan target surfaces in a first direction with light includes: a light source unit configured to emit first and second light beams mutually different in polarization state; an optical deflector configured to rotate around an axis parallel to a second direction perpendicular to the first direction, and deflect the emitted light beams; an imaging optical element provided on respective optical paths of the deflected light beams; a polarization adjustment element provided on the optical paths of the light beams transmitted through the imaging optical element, and configured to correct respective changes in polarization state of the light beams occurring during the transmission of the light beams through the imaging optical element; and a polarization separation element provided on the optical paths of the light beams emitted from the polarization adjustment element, and configured to separate the light beams from each other.
    • 利用光分别在第一方向上扫描多个扫描目标表面的光学扫描装置包括:光源单元,被配置为发射极化状态彼此不同的第一和第二光束; 光学偏转器,被配置为围绕平行于与第一方向垂直的第二方向的轴线旋转,并偏转发射的光束; 设置在偏转光束的相应光路上的成像光学元件; 偏振调节元件,设置在通过成像光学元件透射的光束的光路上,并且被配置为校正在通过成像光学元件的光束透射期间发生的光束的偏振状态的变化; 以及偏振分离元件,设置在从偏振调节元件发射的光束的光路上,并且被配置为将光束彼此分离。
    • 7. 发明申请
    • OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS
    • 光学扫描装置和图像形成装置
    • US20130076851A1
    • 2013-03-28
    • US13624182
    • 2012-09-21
    • Naoto WATANABEToshiaki TokitaKohji SakaiNobuaki Kubo
    • Naoto WATANABEToshiaki TokitaKohji SakaiNobuaki Kubo
    • B41J2/435G02B26/08
    • G02B26/123B41J2/473G02B27/0018
    • An optical scanning device scanning scan target surfaces in a first direction with light includes: a light source emitting first and second light beams corresponding to two of the scan target surfaces; an optical deflector including a reflection surface on which the emitted first and second light beams are obliquely incident while being separated from each other in a second direction perpendicular to the first direction, and deflecting the first and second light beams; a scanning lens disposed on respective optical paths of the deflected first and second light beams; and a branching optical element transmitting therethrough most of the first light beam transmitted through the scanning lens, and reflecting most of the second light beam transmitted through the scanning lens. The deflected first and second light beams intersect between the optical deflector and the branching optical element, when projected on a plane perpendicular to the first direction.
    • 用光扫描第一方向的扫描目标表面的光扫描装置包括:发射对应于两个扫描目标表面的第一和第二光束的光源; 光偏转器,其包括反射面,发射的第一光束和第二光束在垂直于第一方向的第二方向上彼此分离并倾斜入射,并且偏转第一和第二光束; 设置在偏转的第一和第二光束的相应光路上的扫描透镜; 以及分支光学元件,透射通过扫描透镜的第一光束的大部分,并且反射透过扫描透镜的大部分第二光束。 当投影在垂直于第一方向的平面上时,偏转的第一和第二光束在光学偏转器和分支光学元件之间相交。