Optical head

Abstract

Abstract PURPOSE:To attain the titled head small in sized, light in weight and capable of and high speed accessing by separating clearly the recording optical system and the reproducing optical system. CONSTITUTION:The head is composed of the first optical system 101 equipped with the first light source 1, the first collimator lens 2, the first beam splitter 3, and a four-divided light detecting device 5, the second optical system 102 equipped with the second light source 7, the second collimator lens 8, the second beam splitter 9, a composite element 10 and a two-divided light detecting device 11, a wavelength selecting mirror 12 and an objective lens 14. The objective lens 14 is arranged to the position opposite to a disk 15 and supported and driven by the focus track actuator.

Inventors

• 👤 Shigeru Arai
• 👤 茂 荒井

Bibliographic Details