Radiation imagery chemistry: process – composition – or product th – Combined
Patent
1993-12-17
1997-04-08
McPherson, John A.
Radiation imagery chemistry: process, composition, or product th
Combined
4304951, 430962, 359240, 359241, 359244, 359260, G02F 101
Patent
active
056186541
ABSTRACT:
A rhodopsin family protein is inserted into an etalon type cavity having partially reflecting mirrors as principal components having a reflectivity of 50% to less than 100% for light having a wavelength in the 650-800 nm region and a transmissivity of 30% or more for light having a wavelength in the 400-600 nm region to form a photo-controlled spatial modulator. By utilizing a change in the refractive index by light of the photo-sensitive protein, near infrared light of a stronger intensity can be controlled by weaker visible light, and the information contained in the light signal on a two-dimension plane can be rapidly controlled by a light signal of weaker intensity of another two-dimension plane by using an optical switch of a simple construction.
REFERENCES:
patent: 4834511 (1989-05-01), Bennion et al.
patent: 5346789 (1994-09-01), Lewis et al.
Biophys. J. entitled "Surface-Induced Lamellar Orientation of Multilayer Membrane Arrays" by N. Clark, K. Rothschild, D Luippold and B. Simon, vol. 31, Jul. 1980, pp .65-96.
Encyclopedia of Lasers and Optical Technology by R. Heyers, Ed. Academic Press, Inc., 1991, pp. 397-400.
Quarterly Reviews of Biophysics entitled "Bacteriorhodopsin: a biological material for information processing", 24, 4 (1991), pp. 425-478.
"Biopolymers for Real-Time Optical Processing", Bazhenov et al. pp. 103-144 (1989).
Shimizu Norio
Takei Hiroyuki
Hitachi , Ltd.
McPherson John A.
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