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    • 2. 发明公开
    • Hologram information forming method
    • Verfahren zum Erzeugen von holographischer信息。
    • EP0593300A1
    • 1994-04-20
    • EP93308211.7
    • 1993-10-14
    • FUJITSU LIMITED
    • Ueda, Akihiko, c/o FUJITSU LimitedMonzen, Hirokuni, c/o FUJITSU LimitedAritake, Hirokazu, c/o FUJITSU LimitedKato, Masayuki, c/o FUJITSU LimitedNakashima, Masato, c/o FUJITSU Limited
    • G03H1/08
    • 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 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 every sampling points, and the calculated 1-dimensional hologram phase distributions are added every same 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括目标的虚拟空间中。 每个切片平面获得与多边形相交的线段。 检测出的线段根据需要进行分割或剪辑,最后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,只能从 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,在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与每个相同的切片平面相加 。
    • 3. 发明公开
    • COMPUTER-GENERATED HOLOGRAM
    • VERFAHREN ZUM BERECHNEN EINES COMPUTERGENERIERTEN HOLOGRAMMS
    • EP1612624A1
    • 2006-01-04
    • EP04725514.6
    • 2004-04-02
    • DAI NIPPON PRINTING CO., LTD.
    • KITAMURA, Mitsuru, c/o DAI Nippon Printing Co. Ltd
    • G03H1/08
    • G03H1/08G03H1/265G03H1/268G03H2001/0423G03H2001/226G03H2001/2273G03H2210/30G03H2210/441
    • For the purpose of preparing a computer-generated hologram, which has very high resolution and many numbers of parallaxes, the present invention provides a computer-generated holographic stereogram, wherein a virtual point light source group (11) is set up spatially on a side opposite to the observation side of the hologram (12), luminance angular distribution A WLci (θ xz , θ yz ) of divergent light diverged from each of the virtual point light sources of said virtual point light source group toward observation side is divided by angular division, and within the divided angle, among the multiple images positioned on the plane of said virtual point light source group (11), a divergent light to be equal to the divergent light diverged from a point of amplitude equal to the density of pixel of the image corresponding to each of divided angle or equal to a value in a certain fixed relation with the density of the images at the position of the virtual point light source is recorded as the object light (1) at one of the positions on the observation side of the virtual point light source group.
    • 为了制备具有非常高的分辨率和许多视差的计算机生成的全息图,本发明提供了一种计算机生成的全息立体图,其中虚拟点光源组(11)在空间上设置在一侧 与全息图(12)的观察侧相对,从所述虚拟点光源组的每个虚拟点光源向观察侧发散的发散光的亮度角分布A WLci(¸xz,¸yz)被角度 并且在分割角度内,在位于所述虚拟点光源组(11)的平面上的多个图像之中,发射光等于从等于等于像素的像素密度的振幅点发散的发散光 对应于每个分割角度的图像或等于与虚拟点光源的位置处的图像的浓度成一定固定关系的值的图像被记录为 e物体光(1)在虚拟点光源组的观察侧的位置之一处。
    • 8. 发明公开
    • Method and apparatus for creating a holographic stereogram
    • Verfahren und Vorrichtung zur Erzeugung eines holographischen Stereogramms
    • EP0816952A2
    • 1998-01-07
    • EP97401487.0
    • 1997-06-26
    • SONY CORPORATION
    • Kihara, NobuhiroShirakura, AkiraBaba, Shigeyuki
    • G03H1/26
    • G03H1/268G03H1/041G03H2001/0423G03H2001/2685G03H2001/2695G03H2210/22G03H2223/14
    • A method and an apparatus for creating a holographic stereogram are provided for offering an optically equivalent effect to that obtained by locating a mask on a hologram recording medium, without having to locate the mask on the hologram recording medium, and thereby realizing a high-quality hologram without having to complicate the area around the hologram recording medium. The creating method is executed to display an image at a co-ordinate location of the hologram recording medium (30) on a display unit (41), condense a laser beam transmitted through the display unit on the co-ordinate location of the hologram recording medium as an object beam and apply part of the laser beam before transmission through the display means onto the hologram recording medium as a reference beam, and sequentially form the stripped or dotted holographic elements on the hologram recording medium. In this method, a diffuser panel (42) is located close to the display unit for diffusing the beam. A mask (43) having an opening (43a) is located downstream of the display unit and the diffuser panel. The opening corresponds to each holographic element. The object beam is condensed and then is transmitted through the mask (43). Then, the transmitted beam is re-condensed through an optical system (45, 46) and is applied onto the hologram recording medium.
    • 提供了一种用于产生全息立体图的方法和装置,用于提供与通过将全息图记录介质上的掩模定位而获得的光学等效效果,而不必将掩模定位在全息图记录介质上,从而实现高质量 全息图,而不必使全息图记录介质周围的区域复杂化。 执行创建方法以在显示单元(41)上的全息记录介质(30)的坐标位置处显示图像,将在全息图记录的坐标位置上透过显示单元的激光束进行冷凝 介质作为物体光束,并将激光束的一部分通过显示装置传输到作为参考光束的全息图记录介质上,并在全息图记录介质上依次形成剥离或点状的全息元件。 在该方法中,扩散板(42)位于靠近显示单元处以扩散光束。 具有开口(43a)的掩模(43)位于显示单元和扩散板的下游。 开口对应于每个全息元件。 目标光束被冷凝,然后透过掩模(43)。 然后,透射光束通过光学系统(45,46)再凝结,并被施加到全息图记录介质上。
    • 10. 发明公开
    • Computer-generated hologram
    • Computerzeugtes全息图
    • EP2587319A1
    • 2013-05-01
    • EP12183795.9
    • 2004-04-02
    • Dai Nippon Printing Co., Ltd.
    • Kitamura, Mitsuru
    • G03H1/08G03H1/26
    • G03H1/08G03H1/265G03H1/268G03H2001/0423G03H2001/226G03H2001/2273G03H2210/30G03H2210/441
    • For the purpose of preparing a computer-generated hologram reproducing a plurality of images, which has very high resolution and many numbers of parallaxes, the present invention provides a computer-generated holographic stereogram, wherein a virtual point light source group (11) is set up spatially on a side opposite to the observation side of the hologram (12), luminance angular distribution A WLci ( θ xz , θ yz ) of divergent light diverged from each of the virtual point light sources (Q i ) of said virtual point light source group toward observation side is divided by angular division, and within the divided angle, among the multiple images positioned on the plane of said virtual point light source group (11), a divergent light to be equal to the divergent light diverged from a point of Amplitude equal to the density of pixel of the image corresponding to each of divided angle or equal to a value in a certain fixed relation with the density of the images at the position of the virtual point light source is recorded as the object light (1) at one of the positions on the observation side of the virtual point light source group.
    • 为了制备计算机生成的全息图,其再现具有非常高的分辨率和许多视差的多个图像,本发明提供一种计算机生成的全息立体图,其中设置虚拟点光源组(11) 在与全息图(12)的观察侧相反的一侧的空间上,从所述虚拟点光源的每个虚拟点光源(Q i)发散的发散光的亮度角分布A WLci(¸xz,¸yz) 朝向观察侧的源组被分割,并且在分割角度内,位于所述虚拟点光源组(11)的平面上的多个图像之中,发散光等于从点 幅度等于与分割角度对应的图像的像素的密度,或者等于与vi位置处的图像的密度成一定固定关系的值 将虚点光源作为对象光(1)记录在虚拟点光源组的观察侧的位置之一处。