Holographic lenses with wide angular and spectral bandwidths for

Details Holographic lenses with wide angular and spectral bandwidths for Holographic lenses with wide angular and spectral bandwidths for

1995-06-06

1997-10-21

Dzierzynski, Paul M.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 19, 359 22, 349105, G02B 532, G03H 126, G02F 11335

Patent

active

056802315

ABSTRACT:
The angular and/or spectral bandwidth of a holographic lens assembly can be widened to accomodate highly diverging and/or wide spectral bandwidth illumination sources, respectively. Each lens in the lens assembly is comprised of a plurality of angularly customized holograms (an angularly customized hologram set). Each of the individual holograms in an angularly customized hologram set has an acceptance angle range that is centered on a discrete peak acceptance angle. The separation between the holograms' peak acceptance angles is chosen so that the acceptance angle ranges of the individual holograms overlap. The resulting cumulative acceptance angle range of each angularly customized hologram set provides a holographic lens assembly that has a wider angular bandwidth than prior holographic lenses. The spectral bandwidth of the lens assembly can be similarly widened by adding a spectrally customized hologram set to the lens assembly in which the spectral waveband of each of the individual spectrally customized holograms partially overlap. Specific applications to various types of displays are disclosed, as well as preferred fabrication techniques for the holographic lenses.

REFERENCES:
patent: 4728174 (1988-03-01), Grinberg et al.
patent: 4807978 (1989-02-01), Grinberg et al.
patent: 5506701 (1996-04-01), Ichikawa
patent: 5526145 (1996-06-01), Weber
"HDP-6000B Liquid Crystal Projector", Hughes Aircraft Company, Ground Systems Group Product Brochure, Jun. 1988.

Affiliated with

Also associated with

Rating

Holographic lenses with wide angular and spectral bandwidths for does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Holographic lenses with wide angular and spectral bandwidths for, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Holographic lenses with wide angular and spectral bandwidths for will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1011256