Stabilizing oscillation amplitude of torsion oscillator at predetermined frequency
US7952779B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 2008 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Aug 10, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A control method of stabilizing the oscillation amplitude of a torsion oscillator is described. The method includes the steps of: driving a torsion oscillator at a predetermined frequency with a drive energy level by a control module to generate a scanning angle of the incident light beam, wherein the drive energy level is associated with the predetermined frequency; comparing the scanning angle corresponding to the drive energy level with a designate scanning angle by the control module; and adjusting the drive energy level based on the comparison result until the scanning angle of the torsion oscillator is equal to the designate scanning angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.