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    • 2. 发明授权
    • Lens controlling device and method for lens system with variable focal
length
    • 具有可变焦距的透镜系统的镜头控制装置和方法
    • US5887202A
    • 1999-03-23
    • US921320
    • 1997-08-29
    • Motoyuki OhtakeKoichi Ohshita
    • Motoyuki OhtakeKoichi Ohshita
    • G03B3/10G02B7/08G02B7/10G02B7/28G03B13/34G03B13/36
    • G02B7/102
    • A position controlling device in a lens system with a variable focal length with high-precision focusing having a small amount of required recorded information, even when there are large number of divisions of the object distance and of the focal length includes a distance measuring device that detects the object position and transmits photographic distance information. A detecting device detects the movement amount from a standard position of the movable lens group of the lens system when the focal length of the lens system changes. A calculating device calculates the required movement of the focusing lens unit of the lens system, based on the photographic distance information and the movement amount of the movable lens unit. Finally, a controlling device drives the focusing lens unit and performs focusing, based on the required movement calculated by the calculating device. The movable lens unit moves monotonically to the object side or to an image side when the focal length of the lens system is changed. In this manner, the focusing movement required increases monotonically and gradually when the focal length of the lens system changes from the wide-angle end to the telephoto end for a given photographic distance.
    • 具有可变焦距的具有可变焦距的透镜系统中的位置控制装置,具有少量所需记录信息的高精度对焦,即使当对象距离和焦距的分割数量大时,也包括距离测量装置, 检测物体位置并发送摄影距离信息。 当透镜系统的焦距变化时,检测装置从透镜系统的可移动透镜组的标准位置检测移动量。 计算装置基于拍摄距离信息和可移动透镜单元的移动量来计算透镜系统的聚焦透镜单元所需的移动。 最后,控制装置根据由计算装置计算的所需运动来驱动聚焦透镜单元并进行聚焦。 当透镜系统的焦距改变时,可移动透镜单元单调地移动到物体侧或图像侧。 以这种方式,当对于给定的摄影距离,当透镜系统的焦距从广角端到远摄端改变时,所需的聚焦运动单调递增地逐渐增加。
    • 4. 发明授权
    • Focusing method and apparatus for camera
    • 相机的聚焦方法和装置
    • US5875359A
    • 1999-02-23
    • US820752
    • 1997-03-19
    • Motoyuki OhtakeKoichi Ohshita
    • Motoyuki OhtakeKoichi Ohshita
    • G03B13/36G02B7/08G02B7/09G02B7/28G03B13/12G03B13/10
    • G02B7/28
    • In a camera comprising a phototaking lens system and a viewfinder lens system having a different optical axis from that of the phototaking lens system, the camera comprises a drive means, for simultaneously zooming the phototaking lens system and the viewfinder lens system, which simultaneously shifts at least one of the lens groups of the phototaking lens system and at least one of the lens groups of the viewfinder lens system. The drive means simultaneously focuses the phototaking lens system and the viewfinder lens system on an object by simultaneously shifting at least one of the lens groups of the phototaking lens system and at least one of the lens groups of the viewfinder lens system based on the position data of the object.
    • 在包括具有与摄像透镜系统的光轴不同的光轴的摄影透镜系统和取景器透镜系统的相机中,照相机包括驱动装置,用于同时变焦拍摄透镜系统和取景器透镜系统,其同时在 摄影透镜系统的透镜组中的至少一个以及取景器透镜系统的至少一个透镜组。 驱动装置通过基于位置数据同时移动摄影透镜系统的透镜组中的至少一个和取景器透镜系统的透镜组中的至少一个,同时将拍摄透镜系统和取景器透镜系统对焦于物体上 的对象。
    • 5. 发明授权
    • Illumination device
    • 照明装置
    • US5390084A
    • 1995-02-14
    • US247231
    • 1994-05-23
    • Motoyuki OhtakeKoichi Ohshita
    • Motoyuki OhtakeKoichi Ohshita
    • F21V13/04
    • F21V13/04
    • An illumination device of this invention includes a flash light source for radiating flash light, a reflector, arranged on a side opposite to an object with respect to the flash light source, for reflecting a light beam radiated from the flash light source, and a refractor for projecting a light beam directly radiated from the flash light source and a light beam reflected by the reflector toward the object. The refractor adopts a Fresnel lens having a rotation-symmetrical shape with respect to its lens optical axis, a surface, on the object side, of the Fresnel lens is a flat surface perpendicular to the lens optical axis, and the other surface of the Fresnel lens is a Fresnel surface. The optical axes of the flash light source and the reflector are coaxial with each other, and define the reference optical axis of the illumination device. The lens optical axis is tilted at a predetermined angle from the reference optical axis, and the lens center of the Fresnel lens is shifted by a predetermined distance from a lens intersection as an intersection between the reference optical axis and the Fresnel lens.
    • 本发明的照明装置包括用于辐射闪光的闪光灯源,设置在与闪光光源相对的物体的一侧的反射器,用于反射从闪光光源辐射的光束,以及折射器 用于将从闪光光源直接辐射的光束和由反射器反射的光束投射到物体。 折射器采用相对于其透镜光轴具有旋转对称形状的菲涅尔透镜,菲涅尔透镜的物体侧的表面是与透镜光轴垂直的平坦表面,菲涅耳的另一个表面 镜头是菲涅耳表面。 闪光光源和反射器的光轴彼此同轴,并限定照明装置的基准光轴。 透镜光轴从参考光轴倾斜预定角度,并且菲涅尔透镜的透镜中心作为基准光轴和菲涅尔透镜之间的交点从透镜交点偏移预定距离。
    • 6. 发明授权
    • Camera capable of panorama phototaking
    • 相机能够进行全景拍摄
    • US5436683A
    • 1995-07-25
    • US305760
    • 1994-09-14
    • Koichi OhshitaAtsushi ShibayamaSusumu Sato
    • Koichi OhshitaAtsushi ShibayamaSusumu Sato
    • G03B37/00G02B15/16G03B1/50G03B17/28
    • G02B15/161G03B1/50G03B37/00G03B2217/248
    • In a phototaking lens with the focal length variable from a predetermined value at the wide-angle end position to another predetermined value at the telephoto end position, a part of lens elements constituting the phototaking lens is rendered movable relative to other lens components. There is provided means for converting the lens, by the relative movement of a part of the lens elements, to a panorama state with a focal length even shorter than that at the wide-angle end position. The phototaking lens is a zoom lens having a first lens group of a positive refractive power and a second lens group of a negative refractive power in the order from the object side, wherein the focal length is varied by a change in the distance between the first and second lens groups, and the panorama state is obtained by a relative movement of the first lens group relative to the second lens group.
    • 在焦距从广角端位置的预定值变化到望远端位置处的另一预定值的摄像透镜中,构成摄像透镜的透镜元件的一部分能够相对于其他透镜部件移动。 提供了用于通过一部分透镜元件的相对运动将透镜转换成具有比广角端位置处的焦距更短的焦距的全景状态的装置。 感光透镜是具有正屈光力的第一透镜组和物镜侧的次数的负屈光力的第二透镜组的变焦透镜,其中焦距通过第一和第二像素之间的距离的变化而变化 和第二透镜组,并且通过第一透镜组相对于第二透镜组的相对运动获得全景状态。
    • 7. 发明授权
    • Finder optical system
    • Finder光学系统
    • US5245375A
    • 1993-09-14
    • US985491
    • 1992-11-30
    • Koichi Ohshita
    • Koichi Ohshita
    • G03B13/08G03B17/20
    • G03B13/08G03B17/20
    • In a finder optical system wherein a field frame and a field lens are placed near an objective lens and a real image plane made by the objective lens and a prism having a reflecting surface is disposed between the field frame and an eyepiece, a transmitting surface substantially perpendicular to the optical axis of reflected light reflected by the reflecting surface of the prism is provided on the reflecting surface of the prism or by cutting away the reflecting surface, and an information display system for displaying desired information through that transmitting surface is provided. The information display system is provided at a position optically symmetrical with the field frame.
    • 在场景框架和场透镜放置在物镜附近并且由物镜制成的实像和具有反射面的棱镜设置在场框和目镜之间的取景器光学系统中,基本上 垂直于棱镜的反射面反射的反射光的光轴被设置在棱镜的反射面上,或者通过切除反射面而形成,通过该透射面显示期望的信息的信息显示系统。 信息显示系统设置在与场帧光学对称的位置。
    • 9. 发明授权
    • Keplerian finder optical system
    • 开普勒取景器光学系统
    • US5061054A
    • 1991-10-29
    • US319293
    • 1989-03-06
    • Koichi Ohshita
    • Koichi Ohshita
    • G03B13/06G02B5/04G02B17/04G02B17/08G02B23/14G03B13/02
    • G02B23/14G02B17/045G02B5/04G02B23/145
    • A Keplerian finder optical system composed of, in succession from the object side, an objective lens of a positive refractive power, a field lens of a positive refractive power positioned in the vicinity of the focal plane of the objective lens, and an eyepiece lens for observing an image of the object formed on the focal plane of the objective lens, comprises a field diaphragm positioned in the vicinity of the focal plane of the objective lens, a first reflecting device with two reflecting faces positioned in the optical path between the objective lens and the field diaphragm, and second reflecting device with two other reflecting faces, positioned between the field diaphragm and the eyepiece lens.
    • 开普勒式取景器光学系统,其从物体侧连续地构成正屈光力的物镜,位于物镜的焦平面附近的正折光力的场透镜,以及用于 观察形成在物镜的焦平面上的物体的图像,包括位于物镜的焦平面附近的场光膜,具有位于物镜之间的光路中的两个反射面的第一反射装置 和场隔膜,以及具有位于场隔膜和目镜之间的另外两个反射面的第二反射装置。
    • 10. 发明授权
    • Variable magnification optical zoom lens system
    • 可变倍率光学变焦镜头系统
    • US06124984A
    • 2000-09-26
    • US990063
    • 1997-12-12
    • Atsushi ShibayamaKoichi Ohshita
    • Atsushi ShibayamaKoichi Ohshita
    • G02B15/177G02B27/14G02B15/14G02B3/02
    • G02B15/177
    • A variable magnification zoom lens system comprising: in order from the object side, a first lens group having a negative refractive power and a focal length f1; a second lens group having a positive refractive power; and a third lens group having a positive refractive power and a focal length f3 with the first and second lens group arranged to be driven together such that when zooming is performed from the maximum wide-angle state to the maximum telephoto state of the zoom lens system, the first lens group and the second lens group move such that the distance between the first lens group and the second lens group is decreased, and at the same time, the distance between second lens group and the third lens group is increased and with the following condition being fulfilled: 0.4
    • 一种可变倍率变焦透镜系统,包括:从物体侧起依次具有负折射力和焦距f1的第一透镜组; 具有正屈光力的第二透镜组; 以及具有正折射力的第三透镜组和焦距f3,其中第一和第二透镜组被布置成被驱动在一起,使得当从变焦透镜系统的最大广角状态到最大远摄状态执行变焦时 第一透镜组和第二透镜组移动使得第一透镜组和第二透镜组之间的距离减小,并且同时第二透镜组和第三透镜组之间的距离增加,并且与 满足以下条件:0.4