Mirror driving apparatus for optical disk drive

Details Mirror driving apparatus for optical disk drive Mirror driving apparatus for optical disk drive

1993-04-06

1995-06-27

Shafer, Ricky D.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359213, 359224, 310 75R, G02B 2608

Patent

active

054284732

ABSTRACT:
A mirror driving apparatus includes a rotary mirror, a support member for rotatably supporting the rotary mirror, a driving section for rotating the rotary mirror, a rotary electrode mounted on the rotary mirror or the support member, a fixed electrode disposed close to the rotary electrode and generally parallel thereto, a fixing section to which the support member and the fixed electrode are mounted, and a detecting section for detecting electrostatic capacity or a variation thereof between the rotary electrode and the fixed electrode. A mechanical vibration system, formed by the rotary mirror and the rotary mirror support member, is controlled based on the amount of rotary movement of the rotary mirror detecting as a change in capacity between the electrodes to suppress resonance of the rotary mirror. Additionally, by superposing an additional high frequency component outside the control band onto the rotary mirror control signal, the rotary mirror can be moved in fine increments. Thus, a dead band region (hysteresis characteristic) of the mechanical vibration system is limited.

REFERENCES:
patent: 4264809 (1981-04-01), Fearnside
patent: 4330880 (1982-05-01), Van Dijk
patent: 4423496 (1983-12-01), Opheij et al.
patent: 4466088 (1984-08-01), Trethewey
patent: 4556964 (1985-12-01), Trethewey
patent: 4564757 (1986-01-01), LaBudde et al.

Affiliated with

Also associated with

Rating

Mirror driving apparatus for optical disk drive does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mirror driving apparatus for optical disk drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mirror driving apparatus for optical disk drive will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-291243