Apparatus for recording on master optical disc

摘要

A master optical disc recording apparatus in need of only little maintenance and allowing easy optical axis adjustment despite its simplified construction. The master optical disc recording apparatus outputs an outgoing light having a converted wavelength ranging from 0.3 to 0.36 mu m by a non-linear optical process of a non-linear optical element enclosed within a laser light generating portion 1. The outgoing light is modulated by a light modulator 3 in accordance with recording information from outside to produce an exposing light which is converged by a recording lens 4 on the master optical disc 7 coated with a photosensitive material. The master optical disc 7, kept in rotation, is scanned with light from the recording lens 4 for writing the recording information. The recording lens 4 includes an automatic focusing mechanism including a bi-acid actuator 5 for servo adjustment.