Optical characteristics switching mechanism optical head and opt

Details Optical characteristics switching mechanism optical head and opt Optical characteristics switching mechanism optical head and opt

1998-05-21

2000-11-14

Edun, Muhammad

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 4414, 369 4417, G11B 712

Patent

active

061479543

ABSTRACT:
The present invention relates to an optical characteristics switching mechanism for switching optical characteristics of an optical system by selectively locating an optical element in an optical path of the optical system. The optical characteristics switching mechanism of the present invention comprises optical characteristics switching element for selectively arranging a holder holding the optical element at either of a first position at which the optical element exists in the optical path and a second position at which the optical element is out of the optical path, by rotating the holder with use of a magnetic force.

REFERENCES:
patent: 5815328 (1998-09-01), Makita
patent: 5986984 (1999-11-01), Nakamura et al.

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