Optical: systems and elements – Holographic system or element – For synthetically generating a hologram
Reexamination Certificate
2006-10-17
2006-10-17
Boutsikaris, Leonidas (Department: 2872)
Optical: systems and elements
Holographic system or element
For synthetically generating a hologram
C359S022000
Reexamination Certificate
active
07123392
ABSTRACT:
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 image11and a visually unperceivable original image12(micro-characters) are defined, and sample point sources of light P are defined at a low density on the original image11and at a high density on the original image12. Interference fringes of object light coming from the point light sources on the original image11and reference light R are found on each computation point within an area α1on a recording surface20, and interference fringes of object light coming from point light sources on the original image12and reference light R are found on each computation point within an area α2on the recording surface20. The light sources that become samples are defined at a given pitch on sectional lines obtained by cutting the original images11and12by a multiplicity of sections (parallel with an XZ plane) located at a given spacing. The section-to-section spacing for the original image12is made narrows than that for the original image11.
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Hamano Tomohisa
Kitamura Mitsuru
Boutsikaris Leonidas
Dai Nippon Printing Co. Ltd.
Sughrue & Mion, PLLC
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