COMPOSITE OBJECTIVE LENS, DIFFRACTION ELEMENT, OPTICAL HEAD DEVICE, OPTICAL INFORMATION DEVICE, OBJECTIVE LENS DRIVING METHOD AND CONTROL DEVICE

PROBLEM TO BE SOLVED: To use a serration diffraction element that records or reproduces conventional optical disks such as a DVD or CD in an optical head device that records or reproduces a high density optical disk using an objective lens with a large of NA (numerical aperture). SOLUTION: Steps, wh...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YAMASAKI FUMITOMO, TANAKA TOSHIYASU, KANEUMA YOSHIAKI
Format:	Patent
Sprache:	eng
Schlagworte:	INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!