Optical head with flying lens

Optical head with improved tracking and focusing error capabilit

Optical head with light receiving element surfaces divided...

Optical head with provision for tracking and focussing control

Optical head with spherical aberration correction and method...

Optical head with spherical aberration correction and method...

Optical head with tracking error detecting system

Optical head, an optical disk device and an integrated circuit

Optical head, diffraction device, objective lens, and...

Optical head, information storage apparatus, optical head...

Optical head, lazer diode module and optical...

Optical head, light-emitting/receiving device, and apparatus...

Optical head, optical information storage apparatus, and...

Optical head, optical recording and/or reproducing...

Optical head, optical recording/reproducing apparatus and...

Optical head, photodetector, optical information recording...

Optical high density data reproducing apparatus using interferen

Optical information apparatus and method of recording and erasin

Optical information apparatus employing two different tracking e

Optical information output device