Narrow angle hologram device and method of manufacturing same

Details Narrow angle hologram device and method of manufacturing same Narrow angle hologram device and method of manufacturing same

2007-08-21

2007-08-21

Lavarias, Arnel (Department: 2872)

Optical: systems and elements

Holographic system or element

For reconstructing image

C359S025000, C359S015000, C283S086000

Reexamination Certificate

active

10949597

ABSTRACT:
A method of manufacturing a master for producing a hologram device. A first master is produced with a compensating angle. The second master is produced from the first master with an index matching material to reduce the interference pattern caused by internal reflections within the holographic plate of the master. The hologram device has a relatively narrow angle of reconstruction to provide visibility from a nearly perpendicular light source such as the headlight of an on-coming vehicle.

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Y. Taketomi, T. Kubota, ‘Deep image reconstruction of a reflection hologram using a fluorescent lamp’, Proc. SPIE, vol. 3293, 1998, pp. 196-204.

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