Optical data recording/reproduction apparatus for use with semic

Details Optical data recording/reproduction apparatus for use with semic Optical data recording/reproduction apparatus for use with semic

1993-07-13

1994-08-09

Young, W. R.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4423, 369122, G11B 700

Patent

active

053373022

ABSTRACT:
An optical data recording and reproduction apparatus which uses a semiconductor laser as a light source is disclosed. The half angle of light issuing from the laser in a junction direction of the laser and the focal length of a condenser lens adapted to focus a laser beam from the laser are adequately selected in such a manner as to satisfy a particular condition.

REFERENCES:
patent: 4397527 (1983-08-01), Geyer
patent: 4532619 (1985-07-01), Sugiyama et al.
"Disc-Type Still-Video Recorder" by Kanamaru et al. of National Technical Report, vol. 28, No. 3, Jun. 1982, pp. 87-98.
"Semiconductor Laser and Usage thereof" by Kunio Aiki of O plus E, Feb. 1984, pp. 89-97.

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