Method and apparatus for optical information recording

Abstract

Abstract PURPOSE:To attain high density recording of information by varying the light beam output to a recording medium in response to the recording information and varying the optical characteristic of the recorded part in response to the information. CONSTITUTION:In receiving a laser beam from a light source 21 onto a record ing layer 31 of a disk 30, a part with a different optical characteristic from that of the non-radiated part is formed to the radiated part and the optical characteristic of the radiated part varies with the output of the laser beam. Then the laser beam whose output is modulated by a modulator 22 in response to the information signal is collected and radiated via a condenser lens 28 and the recorded part 33 having an optical characteristic in response to the laser beam output is formed.

Inventors

• 👤 Toshio Kudo
• 👤 Toshiaki Niitsu

Bibliographic Details