MICRO-OSCILLATING MEMBER, LIGHT-DEFLECTOR, AND IMAGE-FORMING APPARATUS
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Abstract
The present invention provides a resonance type micro-oscillating member capable of retraining a fluctuation of angular velocity, and specifically provides a micro-oscillating member, which is a nested micro-oscillating member, wherein there exist a reference oscillation mode which is the characteristic oscillation mode of a reference frequency, and an even numbered oscillation mode which is the characteristic oscillation mode of a frequency being approximate even number times the reference frequency.
18 Citations
21 Claims
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1-10. -10. (canceled)
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11. An oscillating apparatus, comprising:
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a movable system comprising a plurality of movable elements and a plurality of torsion springs, the movable system having a plurality of isolated characteristic oscillation modes; a support portion for supporting the movable system; a driver for oscillating the movable system; and a driving controller for controlling the driver, wherein the driving controller controls the driver such that the movable system simultaneously oscillates in at least a first characteristic oscillation mode of a reference frequency and a second characteristic oscillation mode of a frequency being approximately an even number times the reference frequency. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. An oscillating member, comprising:
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a movable system comprising a plurality of movable elements and a plurality of torsion springs, the movable system having a plurality of isolated characteristic oscillation modes; and a support portion for supporting the movable system, wherein the movable system has at least a first characteristic oscillation mode of a reference frequency and a second characteristic oscillation mode of a frequency being approximately an even number times the reference frequency. - View Dependent Claims (21)
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21-1. The oscillating member according to claim 20, wherein the frequency of the second characteristic oscillation mode is 1.98 times or more to 2.02 times or less of the reference frequency.
Specification