Radiation imagery chemistry: process – composition – or product th – Retrieving image made using radiation imagery
Patent
1994-09-08
1998-07-28
Angebranndt, Martin
Radiation imagery chemistry: process, composition, or product th
Retrieving image made using radiation imagery
430945, 43027013, G11B 700
Patent
active
057861170
ABSTRACT:
An optical information recording medium includes a base, a reflecting layer formed on the base, a second layer formed parallel to the first reflecting layer at a predetermined distance from the same, and a recording layer formed between the first and second reflecting layers. The recording layer has an array of a plurality of cells having different refractive indices which are changed when irradiated with a light beam. The intensity of the light beam is modulated according to information. Irradiating the recording layer with the modulated light beam causes changes in the refractive index according to the intensity of the light beam. In another aspect, the wavelength of the light beam is changed within a predetermined range including at least one wavelength at which multiple interference occurs between the first and second reflecting layers with respect to each cell. The wavelength of light which has effective reflecting multiple interference is detected. The information recorded in the cell is reproduced in accordance with the wavelength detected. The medium may be used in an apparatus for recording and reproducing information.
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Hoshi Hiroaki
Matsumura Susumu
Morishima Hideki
Yamaguchi Eiji
Yamamoto Masakuni
Angebranndt Martin
Canon Kabushiki Kaisha
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