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    • 1. 发明申请
    • A METHOD OF WRITING A COMPOSITE 1-STEP HOLOGRAM
    • 一种编写复合一步法的方法
    • WO03065129A2
    • 2003-08-07
    • PCT/GB0300345
    • 2003-01-27
    • XYZ IMAGING INCBROTHERTON-RATCLIFFE DAVIDRODIN ALEXEYHRYNKIW LYNNE
    • BROTHERTON-RATCLIFFE DAVIDRODIN ALEXEYHRYNKIW LYNNE
    • G03H1/04G03H1/26G06K19/06G11B7/0065G03H1/00
    • G03H1/26
    • A method of writing a single or double parallax composite 1-step hologram is disclosed. Digital data is acquired from a real or virtual object and is described by a luminous intensity tensor. A single mathematical transformation is performed to convert the luminous intensity tensor into a mask tensor. The single mathematical transformation transforms the digital data whilst integrally correcting the digital data for the finite distortion of an optical objective. Corrected data, described by the mask tensor, is written on to a spatial light modulator. A laser beam is directed on to the spatial light modulator so that at least a portion of the laser beam is spatially modulated to form a spatially modulated laser beam. The spatially modulated laser beam is then passed through an optical objective having a finite distortion and in combination with a reference recording beam forms a composite hologram.
    • 公开了一种写入单视差复合1步全息图的方法。 数字数据从实际或虚拟对象获取,并由发光强度张量来描述。 执行单个数学变换以将发光强度张量转换成掩模张量。 单个数学变换转换数字数据,同时整体校正光学物镜的有限失真的数字数据。 由掩模张量描述的校正数据被写入空间光调制器。 激光束被引导到空间光调制器,使得至少一部分激光束被空间调制以形成空间调制的激光束。 然后空间调制的激光束通过具有有限失真的光学物镜并与参考记录光束组合形成复合全息图。
    • 8. 发明专利
    • AT277369T
    • 2004-10-15
    • AT00985497
    • 2000-12-08
    • XYZ IMAGING INC
    • BROTHERTON-RATCLIFFE DAVIDVERGNES FLORIAN MICHEL ROBERTRODIN ALEXEYGRICHINE MIKHAIL
    • B41J2/44G02B13/00G02B13/22G03H1/12G03H1/16G03H1/24G03H1/26
    • A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. In one embodiment the data are generated entirely by a computer as a 3-D (animated) model. In another embodiment the data are generated from multiple 2-D camera images taken of a real 3-D (moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser, which avoids the usual vibration problems encountered at high rates of production and the installation in normal working environments, is used to record composite holograms on an holographic emulsion using a special optical design. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods to produce full or single colour rainbow white-light transmission holograms, achromatic white-light transmission holograms or single or full-colour white-light reflection holograms. Alternatively the same invention and apparatus permits the direct writing of full or single colour rainbow white-light transmission composite holograms, achromatic white-light transmission composite holograms or single or full-colour white-light reflection composite holograms without the need to pass through the intermediate stage of the H1 transmission hologram. The present invention allows the creation of a compact rugged machine that is capable of producing holograms covering a large size range. In addition the invention produces holograms that can be tiled together to form composite holograms much larger than the component panels.