发明名称 |
Systems for projecting images from diffractive phase plates |
摘要 |
A system for projecting images is provided having a group of diffractive phase plates each encoded with different image information which have phase shifts aligned to reconstruct visible images in a Fraunhofer diffraction region. The plates are arranged along a path, and may represent successive frames of animation. A light source illuminates the plates and provides, when multiple plates are illuminated, a composite image representing image information encoded in such multiple plates. This composite image is a coincident superposition of reconstructed images from the multiple plates. A mechanism is provided for moving the plates along their path such that images projected from the system in the Fraunhofer diffraction region represent the composite image from successively different illuminated multiple plates or the reconstructed image from a single plate. Both monochromatic and multi-color channel phase plates may be used in the system.
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申请公布号 |
US6466372(B1) |
申请公布日期 |
2002.10.15 |
申请号 |
US19970857815 |
申请日期 |
1997.05.16 |
申请人 |
MORRIS G. MICHAEL;BUNKENBURG JOACHIM |
发明人 |
MORRIS G. MICHAEL;BUNKENBURG JOACHIM |
分类号 |
G03H1/22;(IPC1-7):G02B5/18;G03H1/08 |
主分类号 |
G03H1/22 |
代理机构 |
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