Hologram plate and its fabrication process

Details Hologram plate and its fabrication process Hologram plate and its fabrication process

2006-05-16

2006-05-16

Assaf, Fayez G. (Department: 2872)

Optical: systems and elements

Holographic system or element

Copying by holographic means

C359S025000, C359S015000, C359S022000, C359S900000, C430S001000

Reexamination Certificate

active

07046406

ABSTRACT:
The invention provides a hologram plate which is used with the double-focus replication process, and which is integrated with a spacer to impart marring resistance thereto, and is integrated with a light absorbing layer to allow zero-order light and first-order light to have substantially the same intensity. This hologram plate42comprises an array of collective element holograms for diffracting parallel light incident thereon at a specific wavelength and a specific incident angle in such a way that the light is converged onto a specific focal length position. The hologram plate42is a multilayer structure made up of a first transparent substrate31, a hologram layer32, an adhesive layer33and a second transparent substrate41. The second transparent substrate42defines a surface in contact with a hologram photosensitive material53during hologram replication.

REFERENCES:
patent: 6081354 (2000-06-01), Gambogi, Jr. et al.
patent: 6111670 (2000-08-01), Hattori et al.
patent: 6157474 (2000-12-01), Orr et al.
patent: 6309735 (2001-10-01), Ueda et al.
patent: 2002/0001109 (2002-01-01), Hamano et al.

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