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    • 13. 发明授权
    • Stereoscopic display apparatus and method
    • 立体显示装置及方法
    • US5617225A
    • 1997-04-01
    • US479838
    • 1995-06-07
    • Hirokazu AritakeMasayuki KatoManabu IshimotoNoriko SatoMasato Nakashima
    • Hirokazu AritakeMasayuki KatoManabu IshimotoNoriko SatoMasato Nakashima
    • G03H1/08G03H1/26H04N13/00
    • G03H1/08G03H1/268
    • A plurality of 2-dimensional images of different visual directions, when an object to be displayed is seen from different directions, are inputted to an input section by photographing an object using cameras. The 2-dimensional images are then subjected to enlargement, reduction, and movement of the coordinate position, thereby adjusting the size and position of the solid image. A phase distribution at a hologram forming surface is then calculated by a phase calculating section. The phase distribution is calculated from a plurality of 2-dimensional images of red, green, and blue components, and the reproduction light of each color is irradiated, thereby displaying a color solid image. The calculated phase distribution is expressed on a hologram forming surface of a phase expressing section using a display. A reproduction light is then irradiated and converted into an optical wave front, to thereby display a solid image. The 2-dimensional images obtained by photographing can be also formed by interpolating calculations from the two 2-dimensional images which were acctually photographed.
    • 当从不同的方向看待要显示的对象时,不同的视觉方向的多个二维图像通过使用照相机拍摄对象被输入到输入部分。 然后对二维图像进行放大,缩小和坐标位置的移动,从而调整实心图像的大小和位置。 然后,通过相位计算部计算全息图形成面的相位分布。 从多个红色,绿色和蓝色成分的二维图像计算相位分布,照射各颜色的再现光,由此显示彩色立体图像。 所计算的相位分布在使用显示器的相位表示部分的全息图形成表面上表示。 然后照射再现光并将其转换成光波前面,从而显示实心图像。 通过拍摄获得的二维图像也可以通过内插来自被摄影的两个二维图像的计算来形成。
    • 15. 发明授权
    • Stereoscopic display apparatus and method
    • 立体显示装置及方法
    • US5760933A
    • 1998-06-02
    • US807813
    • 1997-02-26
    • Hirokazu AritakeMasayuki KatoManabu IshimotoNoriko SatoMasato Nakashima
    • Hirokazu AritakeMasayuki KatoManabu IshimotoNoriko SatoMasato Nakashima
    • G03H1/08G03H1/26H04N15/00G03H1/28G03H1/30
    • G03H1/08G03H1/268
    • In a method and apparatus for displaying a stereoscopic image, a plurality of 2-dimensional images having parallaxes in only horizontal directions are obtained and inputted when an object to be displayed is seen from different positions in the horizontal direction. The 2-dimensional image is divided in the vertical direction into 1-dimensional line images which are elongated in the horizontal direction. A phase distribution of a corresponding hologram segment is calculated from the pixels of the line image. The calculated phase distribution is displayed on a hologram forming surface of a phase displaying section using a display. A reproduction light is irradiated and converted into an optical wave front and is further enlarged in the vertical direction, thereby displaying a solid image. The 2-dimensional images are inputted by photographing the object by a plurality of cameras arranged in the horizontal direction. The 2-dimensional images can be also produced by interpolating calculations from two 2-dimensional images which were actually photographed. The 2-dimensional images which are used in the phase calculations are subjected to a process such as enlargement, reduction, or movement of the coordinate position, thereby adjusting the size and position of a solid image.
    • 在用于显示立体图像的方法和装置中,当从水平方向上的不同位置看到要显示的对象时,获得具有仅在水平方向上具有视差的多个2维图像。 二维图像在垂直方向上被划分为在水平方向上延伸的一维线图像。 从行图像的像素计算相应全息图段的相位分布。 所计算的相位分布使用显示器显示在相位显示部分的全息图形成表面上。 再现光被照射并转换为光波前,并在垂直方向上进一步放大,从而显示实心图像。 通过在水平方向上布置的多个摄像机拍摄对象来输入二维图像。 二维图像也可以通过实际拍摄的两个二维图像的内插计算来产生。 在相位计算中使用的二维图像经受诸如放大,缩小或坐标位置移动的处理,从而调整实心图像的尺寸和位置。
    • 18. 发明授权
    • Hologram information forming method
    • 全息信息形成方法
    • US5400155A
    • 1995-03-21
    • US134825
    • 1993-10-12
    • Akihiko UedaHirokuni MonzenHirokazu AritakeMasayuki KatoMasato Nakashima
    • Akihiko UedaHirokuni MonzenHirokazu AritakeMasayuki KatoMasato Nakashima
    • G03H1/08G03H1/26
    • G03H1/08G03H1/2294G03H2001/0423G03H2001/085G03H2210/36G03H2210/452G03H2210/454G03H2225/32G03H2240/62
    • A hologram surface to express a phase distribution, a visual field in which a solid image can be seen; and a stereoscopic display limit are set in a virtual space. A target to be stereoscopically displayed is subsequently expressed in the virtual space by a set of micro polygons. A plurality of slice planes which are parallel with the horizontal plane are set into the virtual space including the target. The line segments which intersect the polygons are obtained for every slice plane. The detected line segment is divided or clipped as necessary and is finally divided into the portion which can be always seen from the whole region of the visual field and a portion which is obstructed by another line segment and can be seen from only a part of the visual field, thereby extracting the line segment. In the calculation of a phase distribution, sampling points are set onto the extracted line segment, a 1-dimensional hologram phase distribution on the hologram surface is calculated for every sampling point, and the calculated 1-dimensional hologram phase distributions are added to every slice plane.
    • 表示相位分布的全息图表面,可以看到实心图像的视野; 并且在虚拟空间中设置立体显示限制。 立体显示的目标随后通过一组微多边形在虚拟空间中表示。 将与水平面平行的多个切片平面设置在包含目标的虚拟空间中。 对于每个切片平面获得与多边形相交的线段。 检测到的线段根据需要被划分或剪辑,并且最终被划分为从视野的整个区域总是可以看到的部分和被另一个线段阻挡的部分,并且可以仅从 视野,从而提取线段。 在相位分布的计算中,将采样点设置在提取的线段上,针对每个采样点计算全息图表面上的一维全息图相位分布,并将计算出的一维全息图相位分布添加到每个切片 飞机
    • 19. 发明授权
    • Method of manufacturing light beam scanning apparatus and fixed hologram
plate and rotatable hologram and light distributing apparatus
    • 制造光束扫描装置和固定全息板以及可旋转全息图和光分布装置的方法
    • US5861964A
    • 1999-01-19
    • US453669
    • 1995-05-30
    • Shinya HasegawaShigeo KayashimaSatoshi MaedaShigetake IwataFumio YamagishiMasato NakashimaHirokazu AritakeMamoru Hokari
    • Shinya HasegawaShigeo KayashimaSatoshi MaedaShigetake IwataFumio YamagishiMasato NakashimaHirokazu AritakeMamoru Hokari
    • G02B5/32G02B26/10G03H1/12G02B5/18G02B26/08
    • G02B5/32G02B26/106G03H1/0005
    • A high-resolution light-beam scanning apparatus utilizing only mass-producible holograms instead of utilizing auxiliary optical systems, and capable of compensating for disadvantages. The light-beam scanning apparatus including diffraction gratings for minimizing either: a sum total of values obtained by weighting a square of an optical path length difference between an optical path of a light flux measured along a principal axis of a light beam incident on and diffracted by a first diffraction grating of a rotatable hologram, and incident on and diffracted by a second diffraction grating of a fixed plate to conduct a scanning and converging on a scanning point on an image formation surface, and an optical path of a light flux measured along a marginal ray distanced from the principal axis or an absolute value of the optical path difference thereof; or a sum total of values obtained by weighting a square of a sum obtained by adding an amount of displacement of a light-beam convergent on a scanning point on the image formation surface, to an amount of displacement of the same light. The displacement measured with respect to the principal axis of a phase recorded on the diffraction grating when the light flux is incident on the fixed plate or by weighting an absolute value of the sum. The weighting is conducted at every scanning position of an image formation surface.
    • 高分辨率的光束扫描装置仅利用大量生产的全息图而不是利用辅助光学系统,并且能够补偿缺点。 所述光束扫描装置包括用于最小化以下的衍射光栅:通过对沿着入射和衍射的光束的主轴测量的光通量的光路之间的光程长度差的平方加权而获得的值的总和 通过可旋转全息图的第一衍射光栅,入射并由固定板的第二衍射光栅衍射,以对扫描点进行扫描和会聚,并且沿着图像形成表面测量的光通量的光路 与主轴相距的边缘光线或其光程差的绝对值; 或通过将在图像形成表面上的扫描点上收敛的光束的位移量相加而获得的和的平方加权到相同光的位移量而获得的值的总和。 当光束入射到固定板上时,相对于记录在衍射光栅上的相位的主轴测量的位移或通过加权的绝对值。 加权在图像形成表面的每个扫描位置进行。