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    • 6. 发明申请
    • VIRTUAL IMAGE DISPLAY APPARATUS
    • 虚拟图像显示设备
    • US20130222896A1
    • 2013-08-29
    • US13773058
    • 2013-02-21
    • SEIKO EPSON CORPORATION
    • Akira KOMATSUTakahiro TOTANITakashi TAKEDAToshiaki MIYAOMasayuki TAKAGI
    • G02B27/01
    • G02B27/0172G02B17/0848G02B17/086G02B27/0101G02B27/017G02B2027/0123
    • An intermediate image is formed inside a prism by a projection lens and the like. Image light, totally reflected, in the order of a third surface, a first surface and a second surface, on two or more surfaces thereof, reaches an eye of an observer after passing through the first surface. Thus, it is possible to decrease the thickness of the prism and to reduce the size and weight of the entire optical system. Further, it is possible to realize a bright high-performance display with a wide viewing angle. With respect to external light, it is possible to pass the external light through the first surface and the third surface, for example, for observation. Further, by setting diopter at this time to about 0, it is possible to reduce defocusing or warp of the external light when the external light is observed in a see-through manner.
    • 通过投影透镜等在棱镜内部形成中间图像。 在其两个或多个表面上以第三表面,第一表面和第二表面的顺序全反射的图像光在通过第一表面之后到达观察者的眼睛。 因此,可以减小棱镜的厚度并减小整个光学系统的尺寸和重量。 此外,可以实现具有宽视角的明亮的高性能显示。 对于外部光,可以使外部光穿过第一表面和第三表面,例如用于观察。 此外,通过将此时的屈光度设定为约0,当以观察方式观察外部光时,可以减少外部光的散焦或翘曲。
    • 8. 发明授权
    • Imaging optical system and image reading apparatus using the same
    • 成像光学系统和使用其的图像读取装置
    • US07903301B2
    • 2011-03-08
    • US11961727
    • 2007-12-20
    • Takeyoshi Saiga
    • Takeyoshi Saiga
    • H04N1/04
    • H04N1/03G02B17/0848H04N1/0303H04N1/0305
    • An imaging optical system for imaging imagewise information provided on a surface of an original, upon a surface of an image pickup device such that the imagewise information is read based on signals from the image pickup device, the imaging optical system including four off-axial reflection surfaces which are asymmetric within a sub-scan section, wherein, when a combined power, in a main-scan direction, of two off-axial reflection surfaces of said four off-axial reflection surfaces which are optically close to an original side is denoted by Mf and a combined power, in the main-scan direction, of two off-axial reflection surfaces of the four off-axial reflection surfaces which are optically close to an image pickup device side is denoted by Mr, relations −0.3
    • 一种成像光学系统,用于对提供在原件表面上的图像信息进行成像,在图像拾取装置的表面上,使得基于来自图像拾取装置的信号读取图像信息,成像光学系统包括四个离轴反射 在副扫描部分内不对称的表面,其中当在主扫描方向上组合功率表示所述四个偏轴反射表面的光学上接近原始侧的两个偏轴反射表面时 通过Mf和在主扫描方向上的光学上靠近图像拾取装置侧的四个偏轴反射表面的两个偏轴反射表面的组合功率表示为Mr,关系-0.3
    • 9. 发明授权
    • Imaging system with mirror group
    • 镜像组成像系统
    • US07712905B2
    • 2010-05-11
    • US11578098
    • 2005-03-22
    • David ShaferAurelian DodocAlexander EppleHans-Juergen Mann
    • David ShaferAurelian DodocAlexander EppleHans-Juergen Mann
    • G02B5/08
    • G02B17/0804G02B17/0808G02B17/0812G02B17/0816G02B17/0836G02B17/0844G02B17/0848G02B17/086G02B17/0892G03F7/70058G03F7/70225G03F7/70275G03F7/70341
    • An imaging system for imaging an off-axis object field arranged in an object surface of the imaging system onto an off-axis image field arranged in an image surface of the imaging system while creating at least one intermediate image has: an optical axis; an in-line mirror group having an object side mirror group entry, an image side mirror group exit and a mirror group plane aligned transversely to the optical axis and arranged geometrically between the mirror group entry and the mirror group exit, the mirror group including: a first mirror having a first mirror surface for receiving radiation coming from the object surface in a first reflecting area asymmetric to the optical axis; at least one second mirror having a second mirror surface facing the first mirror surface for receiving radiation coming from the first mirror in a second reflecting area asymmetric to the optical axis; at least one of the first and second mirrors being a concave mirror having a concave mirror surface defining a mirror axis on the optical axis; wherein the mirrors of the mirror group are arranged such that radiation coming from the mirror group entry passes at least four times through the mirror group plane and is reflected at least twice on a concave mirror surface of the mirror group prior to exiting the mirror group at the mirror group exit. A strong overcorrection of image field curvature can be effected in an axially compact design.
    • 用于将布置在成像系统的物体表面中的离轴对象场成像到设置在成像系统的图像表面中的离轴图像场同时创建至少一个中间图像的成像系统具有:光轴; 具有对象侧反射镜组入口的直列式反射镜组,横向于所述光轴排列的像侧反射镜组出射和反射镜组平面,并且几何地布置在所述反射镜组入口和所述镜子组出口之间,所述镜组包括: 第一反射镜,具有第一反射镜表面,用于在与光轴不对称的第一反射区域中接收来自物体表面的辐射; 至少一个第二反射镜,具有面向第一镜面的第二镜面,用于在不对称于光轴的第二反射区域中接收来自第一反射镜的辐射; 所述第一和第二反射镜中的至少一个是凹面镜,所述凹面镜具有在光轴上限定反射镜轴的凹面镜面; 其中反射镜组的反射镜被布置成使得来自反射镜组入口的辐射通过镜组平面至少四次,并且在离开镜组之前在镜组的凹面镜表面上反射至少两次 镜组退出。 可以在轴向紧凑的设计中实现图像场曲率的强过度校正。
    • 10. 发明授权
    • Image-forming optical system
    • 成像光学系统
    • US07542211B2
    • 2009-06-02
    • US12015904
    • 2008-01-17
    • Takayoshi Togino
    • Takayoshi Togino
    • G02B27/14G02B17/00
    • G02B17/086G02B17/0848H04N5/2254H04N5/23293H04N2005/2255
    • A high-performance image-forming optical system made compact and thin by folding an optical path using reflecting surfaces arranged to minimize the number of reflections. The image-forming optical system has a single prism. When image-side three surfaces of the prism are defined as a surface A, a surface B and a surface C in order from the image plane side thereof, at least one of the surfaces B and C has a rotationally asymmetric curved surface configuration that gives a power to a light beam and corrects aberrations due to decentration. The optical system leads light rays from an object to the image plane without forming an image in the prism and has a pupil in the prism. The surface A is a transmitting surface through which rays exit from the prism. The surfaces B and C are internally reflecting surfaces, which are positioned to face each other to form a Z-shaped optical path.
    • 高性能的成像光学系统通过使用反射表面折叠光路而变得紧凑和薄型,以使反射次数最小化。 图像形成光学系统具有单个棱镜。 当棱镜的图像侧三面被定义为表面A,表面B和表面C时,从其像面侧开始,表面B和C中的至少一个具有旋转非对称的曲面构型,其给出 光束的功率和纠正由于偏心造成的像差。 光学系统将来自物体的光线引导到图像平面,而不在棱镜中形成图像,并且在棱镜中具有瞳孔。 表面A是射线从棱镜射出的透射面。 表面B和C是内部反射表面,其被定位成彼此面对以形成Z形光路。