Radiation imagery chemistry: process – composition – or product th – Post imaging processing – With structural limitation
Patent
1994-12-08
1995-11-14
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Post imaging processing
With structural limitation
430494, 430533, 430950, 430944, 355 71, 355 77, 359240, 359290, 359489, G03C 176, G03C 508, G03B 2772, G03B 2732
Patent
active
054665647
ABSTRACT:
A photographic optical system for substantially eliminating non-contact interference fringes in a photographic film comprises: (a) a source of polarized electromagnetic radiation, the radiation being characterized by a wavelength and an incident polarization angle; and (b) a photographic film capable of optical communication with the source and serving to transmit or reflect a portion of the radiation, the film comprising a silver halide emulsion layer on a birefringent support, the support being characterized by a thickness, an emulsion layer interface, an air interface, and birefringence that is dependent on the wavelength of the radiation; wherein the radiation wavelength and incident polarization angle and the support thickness and birefringence are selected such that radiation which penetrates the film and reflects from the air interface exits the support at the emulsion layer interface polarized at an angle substantially perpendicular to the incident polarization angle; whereby the photographic film may be imaged by the source of polarized electromagnetic radiation substantially without formation of non-contact interference fringes. In a process for eliminating non-contact interference fringes, a film that includes a support having a selected thickness and birefringence is exposed by polarized light characterized by a wavelength and an incident polarization angle. Photographic development processing of the exposed film produces an image substantially without fringes.
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patent: 5225319 (1993-07-01), Fukazawa
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Serway, Physics: For Scientists and Engineers, Saunders College Publishing, Philadelphia, 1982, pp. 823-827.
Shurcliff and Ballard, Polarized Light, Van Nostrand, Princeton, N.J., pp. 42-49, 55.58.
Tsou et al., U.S. patent Ser. No. 08/098,488, filed Jul. 27, 1993 for Polyethylene Terephthalate Photographic Film Base.
Blazey Richard N.
Tsou Andy H.
Eastman Kodak Company
Noval William F.
Schilling Richard L.
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