Electronic control system for an optical assembly
US5744721A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 25, 1995 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Oct 25, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0131
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electronic control system that accurately maintains oscillation of an optical assembly at resonance. In the preferred embodiment, a signal control circuit delivers an input signal to an optical assembly. A resonance detector detects the difference in phase between the input signal and a feedback signal from the optical assembly. The phase difference is used to determine whether the optical assembly is at resonance. The signal control circuit is responsive to the resonance detector and modifies the frequency of the input signal to oscillate the optical assembly at its resonant frequency. The electronic control system can also maintain multiple optical assemblies at resonance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.