Optical: systems and elements – Holographic system or element – For synthetically generating a hologram
Reexamination Certificate
2006-05-16
2006-05-16
Boutsikaris, Leonidas (Department: 2872)
Optical: systems and elements
Holographic system or element
For synthetically generating a hologram
C359S022000, C359S032000
Reexamination Certificate
active
07046405
ABSTRACT:
A computer-generated hologram fabrication process which reduces loads on computation of interference fringes for an original image including micro-characters. A visually perceivable original image and a visually unperceivable original image (micro-characters) are defined, and sample point sources of light are defined at a low density on the original image and at a high density on the original image. Interference fringes of object light are found on each computation point within a first area on a recording surface, and interference fringes of object light are found on each computation point within a second area on the recording surface. 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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Hamano Tomohisa
Kitamura Mitsuru
Boutsikaris Leonidas
Dai Nippon Printing Co. Ltd.
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