发明名称 |
Computer-generated hologram fabrication process, and hologram-recorded medium |
摘要 |
The invention relates to a computer-generated hologram fabrication process that can reduce loads on computation of interference fringes for an original image including micro-characters. A visually perceivable original image 11 and a visually unperceivable original image 12 (micro-characters) are defined, and sample point sources of light P are defined at a low density on the original image 11 and at a high density on the original image 12 . Interference fringes of object light coming from the point light sources on the original image 11 and reference light R are found on each computation point within an area alpha1 on a recording surface 20 , and interference fringes of object light coming from point light sources on the original image 12 and reference light R are found on each computation point within an area alpha2 on the recording surface 20 . The light sources that become samples are defined at a given pitch on sectional lines obtained by cutting the original images 11 and 12 by a multiplicity of sections (parallel with an XZ plane) located at a given spacing. The section-to-section spacing for the original image 12 is made narrows than that for the original image 11.
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申请公布号 |
US2005225816(A1) |
申请公布日期 |
2005.10.13 |
申请号 |
US20050146031 |
申请日期 |
2005.06.07 |
申请人 |
DAI NIPPON PRINTING CO., LTD. |
发明人 |
KITAMURA MITSURU;HAMANO TOMOHISA |
分类号 |
G03H1/26;G03H1/08;G11C13/04;G11C17/00;(IPC1-7):G03H1/08 |
主分类号 |
G03H1/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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