Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1989-07-19
1991-05-14
Stephan, Steven L.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369100, 350421, G11B 708, G11B 7135
Patent
active
050162373
ABSTRACT:
Prism optics for changing the shape of a light beam, including a composite prism consisting of at least two types of prisms made of materials having different variations in the refractive index due to variations of the refractive index due to wavelength variations and to temperature variations, which materials are so chosen that the angle of the light beam exitting from the prism optics remains almost constant, independent of variations in the wavelength of the light beam and temperature, and an optical information processing apparatus using these prism optics.
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Arimoto Akira
Nakamura Shigeru
Takahashi Sadao
Watanabe Masateru
Hitachi , Ltd.
Stephan Steven L.
Young W. R.
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