公开(公告)号：US4962982A

公开(公告)日：1990-10-16

申请号：US318259

申请日：1989-03-03

申请人： Kenichi Takanashi

发明人： Kenichi Takanashi

IPC分类号： G02B26/10 ,  G02B13/00 ,  G02B26/12

CPC分类号： G02B26/125

摘要： Rays of light emitted from a light source are converged into a light beam by a converging optical system. The converged light beam is focused in one direction by a first focusing optical system into a linear image having a longitudinal direction corresponding to a main scanning direction in a light beam scanning device. A light deflector for deflecting the light beam has a deflecting surface disposed near a point where the linear image is focused by the first focusing optical system. The deflected light beam is focused as a light spot on a scanned surface by a light beam scanning lens serving as a second focusing optical system. The focused light spot scans a surface at a substantially constant speed. the light beam scanning lens comprises a single-element lens having a cylindrical surface facing the light deflector and a toric surface facing the surface which is scanned by the focussed light spot.

摘要翻译： 从光源发射的光的光线通过会聚光学系统会聚成光束。 会聚光束通过第一聚焦光学系统在一个方向上聚焦成在光束扫描装置中具有对应于主扫描方向的纵向方向的线性图像。 用于偏转光束的光偏转器具有设置在线性图像被第一聚焦光学系统聚焦的点附近的偏转表面。 偏转的光束作为第二聚焦光学系统的光束扫描透镜被聚焦成扫描的表面上的光点。 聚焦光点以基本恒定的速度扫描表面。 光束扫描透镜包括具有面向光偏转器的圆柱形表面的单元件透镜和面向由被聚焦的光斑扫描的表面的复曲面。

公开(公告)号：US4859011A

公开(公告)日：1989-08-22

申请号：US207719

申请日：1988-06-16

申请人： Kenichi Takanashi

发明人： Kenichi Takanashi

IPC分类号： G02B13/00 ,  G02B26/10 ,  G02B26/12 ,  G02B27/00

CPC分类号： G02B27/0031 ,  G02B26/125

摘要： A light scanning device includes a light source unit, a first focusing optical system for focusing a light beam from the light source unit as a linear image in a position, a rotating polygon having a reflecting surface near the position for deflecting the light beam at a constant angular velocity, and a second focusing optical system for focusing the light beam deflected by the rotating polygon as a spot on a surface being scanned. The second focusing optical system includes a lens having a toric surface and coupling the reflecting surface and the scanned surface in substantially conjugate relationship with respect to an auxiliary scanning direction. The axis of the deflected light beam and the optical axis of the second focusing optical system deviate by .DELTA. from each other in a light deflecting plane, where the deflected light beam is parallel to the optical axis of the second focusing optical system, with the second focusing optical system having a focal length fM in the light deflecting plane, the amount of deviation .DELTA. being in the range: 0.0066 fM

摘要翻译： 一种光扫描装置，包括光源单元，用于将来自光源单元的光束作为线性图像聚焦在一个位置的第一聚焦光学系统，具有在用于将光束偏转的位置附近的反射表面的旋转多边形 恒定的角速度和第二聚焦光学系统，用于将由旋转多边形偏转的光束作为斑点聚焦在被扫描的表面上。 第二聚焦光学系统包括具有复曲面的透镜，并且将反射表面和扫描表面以相对于辅助扫描方向基本共轭的关系耦合。 偏转光束的轴线和第二聚焦光学系统的光轴在光偏转平面中彼此偏斜DELTA，其中偏转的光束平行于第二聚焦光学系统的光轴，第二 在光偏转平面中具有焦距fM的聚焦光学系统，偏差量DELTA在0.0066fM

公开(公告)号：US5459601A

公开(公告)日：1995-10-17

申请号：US178409

申请日：1994-04-11

申请人： Seizoh Suzuki ,  Kenichi Takanashi ,  Hiromichi Atsuumi

发明人： Seizoh Suzuki ,  Kenichi Takanashi ,  Hiromichi Atsuumi

IPC分类号： G02B26/12 ,  G02B26/08 ,  G02B1/10

CPC分类号： G02B26/12

摘要： In an optical scanner for reducing shading, a semiconductor laser or a semiconductor laser array is set to a light source and a laser beam from the light source is deflected by a light deflector having a deflecting reflecting face and is converged by a lens for scanning as a light spot on a scanned face to perform an optical scanning operation. The optical scanner has an antireflection coating film disposed on only a refractive face for providing a largest change in incident angle in the deflection of the laser beam with respect to faces of optical elements arranged on an optical path from the light deflector to the scanned face to transmit the laser beam through the optical elements. The optical scanner may have an antireflection coating film disposed on one or more lens faces of the scanning lens such that transmittance of the scanning lens is gradually increased from an optical axis thereof toward both end portions in a main scan-corresponding direction.

摘要翻译： 在用于减少阴影的光学扫描器中，将半导体激光器或半导体激光器阵列设置为光源，并且来自光源的激光束被具有偏转反射面的光偏转器偏转并且被用于扫描的透镜会聚 扫描面上的光斑进行光扫描。 光学扫描器具有仅在折射面上设置的抗反射涂膜，用于在激光束相对于布置在从偏光板到扫描面的光路上的光学元件的面部的偏转中提供最大的入射角变化， 将激光束透过光学元件。 光学扫描器可以具有设置在扫描透镜的一个或多个透镜面上的抗反射涂膜，使得扫描透镜的透光率从主轴扫描对应方向的光轴向两端部逐渐增大。

公开(公告)号：US5029956A

公开(公告)日：1991-07-09

申请号：US467507

申请日：1990-01-19

申请人： Kenichi Takanashi ,  Akihisa Itabashi

发明人： Kenichi Takanashi ,  Akihisa Itabashi

IPC分类号： G02B26/08 ,  G02B26/12 ,  H04N1/113

CPC分类号： H04N1/1135 ,  G02B26/0875 ,  G02B26/125

摘要： An optical scanner comprises a light source device; a linear image forming device for forming an approximately parallel light beam from the light source device as a linear image extending in a main scanning corresponding direction; a rotary polygon mirror having a deflection-reflecting face in the vicinity of the image forming position of the linear image; and an image forming optical system arranged between the rotary polygon mirror and a scanned face and setting the scanned face and a deflecting start point of the deflection-reflecting face in an approximately conjugate relation in geometrical optics with respect to a secondary scanning direction, the image forming optical system forming the deflected light beam from the deflection-reflecting face as an image of a light spot on the scanned face. The linear image forming device has a transparent elastic parallel plate, a cylindrical lens, a deforming device for flexing the elastic parallel plate in the shape of an arc by applying a deforming force thereto to change a radius of curvature of a face of the elastic parallel plate, and a controller for controlling the application of the deforming force in synchronization with an optically scanning operation by the deflected light beam. The linear image forming device may have other constructions.

摘要翻译： 光学扫描仪包括光源装置; 线性图像形成装置，用于形成来自光源装置的近似平行的光束，作为在主扫描对应方向上延伸的线性图像; 旋转多面镜，其在所述线状图像的图像形成位置附近具有偏转反射面; 以及设置在所述旋转多面镜和扫描面之间的图像形成光学系统，并且将所述偏转反射面的扫描面和偏转起始点相对于副扫描方向设置为几何光学中的近似共轭关系，所述图像 形成从偏转反射面形成偏转光束的光学系统作为扫描面上的光点的图像。 线性图像形成装置具有透明弹性平行板，圆柱形透镜，用于通过施加变形力使弹性平行板弯曲成弧形的变形装置，以改变弹性平行面的曲率半径 板和用于通过偏转的光束与光学扫描操作同步地控制变形力的应用的控制器。 线性图像形成装置可以具有其他结构。

公开(公告)号：US4863227A

公开(公告)日：1989-09-05

申请号：US208081

申请日：1988-06-17

申请人： Kenichi Takanashi

发明人： Kenichi Takanashi

IPC分类号： G02B26/10 ,  G02B26/12 ,  G02B27/00 ,  H04N1/113

CPC分类号： G02B26/12 ,  G02B27/0031

摘要： A light scanning device includes a light source unit, a first focusing optical system for focusing a light beam from the light source unit as a linear image onto a position, a rotating polygon having a reflecting surface near the position for deflecting the light beam at a constant angular velocity, a housing sealingly accommodating the rotating polygon and having a window, a second focusing optical system for focusing the light beam deflected by the rotating polygon as a spot on a surface being scanned, and a transparent plane-parallel plate fitted in the window of the housing and disposed between the reflecting surface of the rotating polygon and the first and second focusing optical systems. The plane-parallel plate is arranged to meet:.theta.max

摘要翻译： 一种光扫描装置，包括光源单元，用于将来自光源单元的光束作为线性图像聚焦到位置上的第一聚焦光学系统，具有在用于使光束偏转的位置附近的反射表面的旋转多边形 恒定角速度，密封地容纳旋转多边形并具有窗口的壳体;第二聚焦光学系统，用于将由旋转多边形偏转的光束聚焦在被扫描的表面上的点上;以及透明平面平行板， 窗口，并且设置在旋转多边形的反射表面与第一和第二聚焦光学系统之间。 平面平行板被布置成满足：θmax <α/ pi / 2（pi +θmax-α）/ 2 <γ/ pi / 2其中α是在光轴之间形成的角度 施加到第二聚焦光学系统的旋转多边形和光轴的光束θmax是第二聚焦光学系统的有效最大场角，γ是平面平行板与光轴的光轴之间形成的角度 第二聚焦光学系统。 鉴于平面平行板来校正第二聚焦光学系统的曲率。

公开(公告)号：US4779964A

公开(公告)日：1988-10-25

申请号：US928856

申请日：1986-11-10

申请人： Toshiro Ozawa ,  Yoshio Fukushima ,  Kenichi Takanashi

发明人： Toshiro Ozawa ,  Yoshio Fukushima ,  Kenichi Takanashi

IPC分类号： G02B7/10 ,  G02B15/16 ,  G02B15/14 ,  G02B7/02 ,  G03B17/04 ,  G03B19/02

CPC分类号： G02B7/10 ,  G02B15/161

摘要： A zoom lens has at least a first group lens and a second group lens which are spaced a greater distance from each other in one of telephoto setting and wide angle setting than the other setting, and a mechanism for moving the first group lens from said one setting toward an image formation plane.

摘要翻译： 变焦透镜具有至少第一组透镜和第二组透镜，在第一组透镜和第二组透镜中，在长焦设置和广角设置中的一个距离彼此间隔更大的距离，以及用于使第一组透镜从所述一个透镜移动的机构 朝向图像形成平面。