Resonant optical scanner using vibrating body with optimized...

Details Resonant optical scanner using vibrating body with optimized... Resonant optical scanner using vibrating body with optimized...

2006-09-26

2009-12-29

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

By moving a reflective element

C359S198100, C359S199100

Reexamination Certificate

active

07639413

ABSTRACT:
An apparatus for use in optical scanning is disclosed which vibrates at least a part of a vibrating body having a light-reflective surface, to thereby allow light, upon entry, to be reflected from the light-reflective surface in varying directions. The vibrating body includes: (a) a reflective mirror having the light-reflective surface; and (b) an integral spring extending from the reflective mirror and being excited to generate at least a torsional vibration. The vibrating body has vibrational characteristics in which whether or not a resonant frequency of the torsional vibration and a resonant frequency of a disturbing vibration are equal to each other depends upon a shape-defining parameter for defining a shape of the integral spring extending lengthwise. The shape-defining parameter is pre-set to fall within a range allowing the resonant frequency of the torsional vibration and the resonant frequency of the disturbing vibration to be different from each other.

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