1984-12-21
1989-03-28
Arnold, Burce Y.
350320, G02B 532, G03H 102
Patent
active
048158003
ABSTRACT:
A holographic recording medium is treated to reduce or eliminate unwanted extraneous diffraction and flare. Regions adjacent surfaces of the medium are desensitized to reduce contrast in the holographic fringe pattern along the surfaces, thereby eliminating planar phase grating effects. Treatments include applying a burst of gas or vapor to the surfaces of the medium, irradiating the surfaces with highly absorbed incoherent light, thermally treating the medium as it is built up from sequentially applied layers, building up layers of different concentrations of light-sensitive matrial, and developing diffusion regions at interfaces of layers within the holographic recording medium.
REFERENCES:
patent: 2947626 (1960-08-01), Famely et al.
patent: 3012886 (1961-12-01), Lerner
patent: 3940204 (1976-02-01), Withrington
Beesley M. J. et al., "The Use of Photoresist as a Holographic Recording Medium." Applied Optics, vol. 9 No. 12, Dec. 1970 pp. 2720-2724.
Applied Physics, vol. 10, No. 1, May 1976, S. Case et al.: "Index Modulation and Spatial Harmonic Generation in Dichromated Gelatin Films", pp. 41-51.
Proceedings of the SPIE, vol. 215, "Recent Advances in Holography", 1980, Published by SPIE (Palos Verdes, Cal., U.S.), S. McGrew: "Color Control in Dichromated Gelatin Reflection Holograms", pp. 24-31.
Optics and Laser Technology, vol. 5, No. 4, Aug. 1973; R. McPhedran: "Profile Formation in Holographic Diffraction Gratings", pp. 166-171.
Applied Optics, vol. 10, No. 3, Mar. 1971, K. Biedermann: "Attempts to Increase the Holographic Exposure Index of Photographic Materials" pp. 584-595.
Optics Communications, vol. 43, No. 2, Sep. 1982, R. Syms et al. "Noise Gratings in Photographic Emulsions", pp. 107-110.
Photographic Science and Engineering, vol. 28, No. 5, Oct. 1984 (Easton, Pa., U.S.), S. Sjolinder. "Swelling of Dichromated Gelatin Film", pp. 180-184.
IEEE Journal of Quantum Electronics, vol. QE-4, No. 11, Nov. 1968; A Mikaelian et al.: "Holograms on Photochromic Films", pp. 757-762.
Applied Optics, vol. 18, No. 14, Jul. 15, 1979, B. Chang et al.: "Dichromated Gelatin for the Fabrication of Holographic Optical Elements", pp. 2407-2417.
Nouvelle Revue d'Optique, vol. 4, No. 5, Dec. 1973; J. J. Clair et a.: "Etude Experimentale des Proprietes Optiques des Photoresines; Etude et Analyse de Phenomenes Lies a la preexposition", pp. 353-355.
Chern Mao-Jin J.
Wreede John E.
Alkov Leonard A.
Arnold Burce Y.
Hughes Aircraft Company
Karambelas A. W.
LandOfFree
Flare reduction in holograms does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flare reduction in holograms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flare reduction in holograms will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1654437