Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1995-01-12
1997-05-13
Epps, Georgia Y.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369 94, 369 4437, 369122, 3692751, 369280, 372 24, G11B 700
Patent
active
056299176
ABSTRACT:
An integrated optical pick-up device includes a laser source which emits incoherent laser consist of varied wavelength in wide spectrum, and an optical filter which eliminates improper ranges of the laser's spectrum and transmits only preferred wavelength domains. Therefore, a focus grating which is positioned to intercept the laser can produce several focal points dependent upon selected wavelength by the optical filter. Then another grating deflects each reflected laser from different points on the optical medium at certain angle and transmits to specific photo-detector.
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Chu Kim-Kwok
Epps Georgia Y.
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