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    • 71. 发明申请
    • MULTI-PITCHING ANGLE SUSPENDED 3D DISPLAY DEVICE WITH 360-DEGREE FIELD OF VIEW
    • 具有360度视场的多点望远镜3D显示设备
    • US20140204185A1
    • 2014-07-24
    • US13808564
    • 2011-09-05
    • Xu Liuxinxing XiaYifan PengHaifeng LiZhenrong Zheng
    • Xu Liuxinxing XiaYifan PengHaifeng LiZhenrong Zheng
    • H04N13/04
    • H04N13/351G02B5/1823G02B5/1828G02B5/203G02B5/32G02B26/0875G02B27/2214G02B27/2292H04N13/302H04N13/305H04N13/346H04N13/354H04N13/363H04N13/365H04N2213/001
    • This invention discloses a multi-pitching angle suspended space 3D display device with 360° FOV, comprising: a transmitted composite deflective diffusing screen, a high speed projector, an image generator, a detecting module and a rotating drive mechanism. The high speed projector projects the composite images of the 3D objects of different pitching angles and horizontal 360° views to the composite deflective diffusing screen that rotates at a high speed. The composite deflective diffusing screen is able to control the vertical deflecting and scattering angles and horizontal diffusing angle for incident rays with different angles, allowing the surrounding viewers at different height levels to see the images corresponding to their viewpoints, making the displayed 3D objects suspended over the composite deflecting scattering screen, of which the position does not change as the height of the viewpoint changes. The multi-pitching angle suspended space 3D display device with 360° FOV allows watching by multiple persons at multiple pitching angles and horizontal 360° FOV in naked eyes, realizing space occlusion, exploration and interaction.
    • 本发明公开了一种具有360°FOV的多俯仰角悬浮空间3D显示装置,包括:透射复合偏转漫射屏,高速投影仪,图像发生器,检测模块和旋转驱动机构。 高速投影机将不同俯仰角和水平360度视图的3D对象的合成图像投射到高速旋转的复合偏转漫射屏幕。 复合偏转扩散屏能够以不同的角度控制入射光线的垂直偏转和散射角度以及水平扩散角度,允许不同高度的周围观看者看到对应于其视点的图像,使显示的3D对象暂停 复合偏转散射屏幕,其位置不随着视点的高度而改变。 具有360°FOV的多俯仰角悬浮空间3D显示装置允许肉眼观察多个俯仰角度和水平360°FOV的多人,实现空间闭塞,探索和相互作用。
    • 72. 发明授权
    • Optical pickup and optical disc device including the same
    • 光拾取器和包括其的光盘装置
    • US08477583B2
    • 2013-07-02
    • US13704700
    • 2012-04-03
    • Seiji Nishiwaki
    • Seiji Nishiwaki
    • G11B7/00
    • G11B7/1353G02B5/1823G02B5/1895G11B7/1367G11B7/1374G11B7/13922G11B2007/0006
    • In an embodiment, an optical pickup includes at least one light source for selectively emitting three light beams having blue, red, and infrared wavelengths, respectively, and an objective lens arranged so that each of the three light beams enters thereto. The objective lens includes a first grating, and a second grating formed in the same plane as the first grating. The first and second gratings each have phase steps arranged concentrically around a center axis of a lens in a region in which all the three light beams pass, and are different in phase step positions. The first grating diffracts the three light beams having the blue, red, and infrared wavelengths in a 2nd order, a 1st order, and the 1st order, respectively. On the other hand, the second grating diffracts the three light beams having the blue, red, and infrared wavelengths in the 1st order, the 1st order, and the 1st order, respectively. As a result, the three light beams having the blue, red, and infrared wavelengths, which have been transmitted through the first grating and the second grating, are diffracted in a 3rd order, the 2nd order, and the 2nd order, respectively.
    • 在一个实施例中,光学拾取器包括分别用于选择性地发射具有蓝色,红色和红外波长的三个光束的至少一个光源,以及布置成使得三个光束中的每一个进入其中的物镜。 物镜包括第一光栅和形成在与第一光栅相同的平面中的第二光栅。 第一和第二光栅各自具有在所有三个光束通过的区域中同心地围绕透镜的中心轴布置的相位步长,并且在相位步长位置上是不同的。 第一光栅分别衍射出具有蓝色,红色和红外波长的三个光束,分别为二阶,一阶和一阶。 另一方面,第二光栅分别以1级,1级,1级衍射具有蓝色,红色和红色波长的三个光束。 结果,已经通过第一光栅和第二光栅传输的具有蓝色,红色和红色波长的三个光束分别以三阶,二阶和二阶衍射。
    • 74. 发明申请
    • EYEPIECE SYSTEM AND OPTICAL DEVICE
    • 眼睛系统和光学设备
    • US20100254005A1
    • 2010-10-07
    • US12817582
    • 2010-06-17
    • Miho MATSUMOTO
    • Miho MATSUMOTO
    • G02B25/00G02B27/42
    • G02B5/1842G02B5/1823G02B25/001G02B27/0037G02B27/4211
    • An eyepiece system has a lens group S1 in which a lens L1 having a negative refractive index and refractive power and a lens L2 having a positive refractive index and refractive power are joined, so that the lens group S1 as a whole has a positive refractive index and refractive power; and a multi-layer (stacked) diffraction optical element PF. In an optical system positioned between an image surface I and an eye point EP, the position of a diffraction plane on the optical axis is between EF in FIG. 1. In FIG. 1, EF is the range in which the value ra of the ratio between a distance (DH2) between the diffraction plane (C) and a principal point (H2) near the diffraction plane and a distance (DH1H2) between principal points is 0.5 or less in both directions from the principal points H1, H2.
    • 目镜系统具有透镜组S1,其中具有负折射率和折光力的透镜L1和具有正折射率和屈光力的透镜L2接合,使得透镜组S1整体具有正折射率 和屈光力; 和多层(堆叠)衍射光学元件PF。 在位于图像表面I和眼点EP之间的光学系统中,光轴上的衍射平面的位置在图3中的EF之间。 在图1中。 在图1中,EF是衍射面(C)与衍射面附近的主点(H2)之间的距离(DH2)与主点之间的距离(DH1H2)之间的比值的值ra的范围, 在主点H1,H2的两个方向上较少。
    • 75. 发明申请
    • Optical pulse shaping method and apparatus
    • 光脉冲成形方法及装置
    • US20100103489A1
    • 2010-04-29
    • US12460060
    • 2009-07-13
    • Christophe MoserFrank Havermeyer
    • Christophe MoserFrank Havermeyer
    • G02B5/32
    • G02B27/0927G02B5/1823G02B5/32G02B27/0944
    • The invention disclosed here teaches methods and apparatus for altering the temporal and spatial shape of an optical pulse. The methods correct for the spatial beam deformation caused by the intrinsic DC index gradient in a volume holographic chirped reflective grating (VHCRG).The first set of methods involves a mechanical mean of pre-deforming the VHCRG so that the combination of the deflection caused by the DC index gradient is compensated by the mechanical deformation of the VHCRG. The second set of methods involves compensating the angular deflection caused by the DC index gradient by retracing the diffracted beam back onto itself and by re-diffracting from the same VHCRG. Apparatus for temporally stretching, amplifying and temporally compressing light pulses are disclosed that rely on the methods above.
    • 这里公开的发明教导了用于改变光脉冲的时间和空间形状的方法和装置。 该方法校正了体积全息啁啾反射光栅(VHCRG)中由本征DC指数梯度引起的空间光束变形。 第一组方法涉及到使VHCRG预变形的机械平均值,使得由DC指数梯度引起的偏转的组合由VHCRG的机械变形补偿。 第二组方法包括通过将衍射光束回射回自身并通过从相同的VHCRG重新衍射来补​​偿由DC折射率梯度引起的角度偏转。 公开了依赖于上述方法的用于暂时拉伸,放大和时间压缩光脉冲的装置。