SECOND OBJECTIVE LENS FOR OPTICAL PICKUP DEVICE

PROBLEM TO BE SOLVED: To provide an optical pickup device for commonising an optical system even while presenting stable performance for a long period for recording and/or reproducing information to and from different optical information recording media, and to provide an objective lens to be used f...

Full description

Saved in:
Bibliographic Details
Main Author NOMURA EIJI
Format Patent
LanguageEnglish
Published 29.03.2012
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To provide an optical pickup device for commonising an optical system even while presenting stable performance for a long period for recording and/or reproducing information to and from different optical information recording media, and to provide an objective lens to be used for the optical pickup device.SOLUTION: Since a second objective lens part OBJ2 is made of resin raw material having an ultraviolet resistance effect, even when luminous flux of wave length λ1 is reflected from a first raising mirror M1, deterioration due to the luminous flux is suppressed, and stable optical performance can be presented for a long period.
Bibliography:Application Number: JP20110287157