Optical device for recording and reproducing information

Details Optical device for recording and reproducing information Optical device for recording and reproducing information

1990-10-19

1991-12-10

Envall, Jr., Roy N.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4411, 369 4414, 359831, G11B 700, G11B 712

Patent

active

050724363

ABSTRACT:
An optical pickup device that comprises a laser source for emitting a laser beam, an objective lens for converging the laser beam to a surface of an optical information recording medium to write optical information thereon, an optical signal detection system for detecting light reflected from the medium surface to read the information written on the medium and a deflection member disposed between the laser source and the objective lens for deflecting the laser beam to the lens. The deflection member has a deflection point where the laser beam is reflected toward the objective lens. The deflection member is arranged universally rotatable about the deflection point.

REFERENCES:
patent: 4719614 (1988-01-01), Leterme et al.
Mitsuroh Moriya et al., "CMF Actuator and High Speed Access System" of Nat'l Technical Report, vol. 35, No. 2, pp. 67-73, 04/89.

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