Information processing apparatus and optical head incorporated t

Details Information processing apparatus and optical head incorporated t Information processing apparatus and optical head incorporated t

1990-12-05

1994-05-31

Psitos, Aristotelis

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 13, 369 772, 369 4414, 3692752, 360114, G11B 700

Patent

active

053175565

ABSTRACT:
There is provided a compact and thin optical disk unit as a memory unit suitable for a portable computer such as a book type computer and a portable recording/reproducing apparatus. In the optical disk unit, the diameter of an objective lens is limited and a beam shaping prism, a beam splitter, a mirror and a 1/4 wavelength plate are formed into a unitary structure to make easy the optical axis adjustment of an optical head and ensure highly accurate assembling.

REFERENCES:
patent: 4886959 (1989-12-01), Hoshi et al.
patent: 4984225 (1991-01-01), Ando
patent: 5031165 (1991-07-01), Fujita
patent: 5105408 (1992-04-01), Lee et al.
Nikkei Electronics Nov. 21, 1983, pp. 189-213.

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