Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1992-07-17
1994-02-08
Pascal, Robert J.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359288, 359240, 359 45, 359241, 353 31, 353 84, 430 20, 345 87, G02F 101, G02B 523
Patent
active
052852989
ABSTRACT:
A color image display apparatus includes: an image recording medium comprising a recording layer capable of selectively forming a light-scattering state and a transparent state, and a color filter having a pattern of plural color segments operatively associated with the recording layer, a light source, a viewing position, and display means for selectively sending to the viewing position a colored optical image composed of scattered light having passed through the recording layer. The display means may include direction means for directing light from the light source to be incident to the recording layer in a direction not normal to the recording layer.
REFERENCES:
patent: 4202010 (1980-05-01), Hareng et al.
patent: 4675699 (1987-06-01), Kan et al.
patent: 4726662 (1988-02-01), Cromack
patent: 4965591 (1990-10-01), Kurabayashi et al.
Hultquist "The Introduction of Negative Claim Limitations During Ex Parte Prosecution: 35 U.S.C. 112 and the Issue of Antecedent Support" JPTOS Mar. 1991 pp. 218-233.
Patent Abstracts of Japan, vol. 12, No. 162 (May, 1983) (P-703) (3010).
Isaka Kazuo
Kai Takashi
Kaneko Shuzo
Toshida Yomishi
Yoshinaga Kazuo
Canon Kabushiki Kaisha
Pascal Robert J.
Shingleton Michael B.
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