Current to voltage converter with optical gain mechanism
US6710317B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 27, 2002 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Nov 1, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/45973
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention creates a current to voltage conversion system, comprised of an operational amplifier, which obtains a feedback current from an optical detector. The output of the operational amplifier controls the intensity of a light source whose optical energy is transmitted through an optical intensity reduction mechanism, to generate the feedback current. A separate light intensity measurement system is constructed to measure the output of the light source directly, bypassing the effects of the optical intensity reduction mechanism. By measuring the light source, the magnitude of the input current can be determined. The increased illumination created by using an optical reduction mechanism within the operational amplifier's feedback loop allows the separate light source intensity measurement system to be easily constructed using conventional technologies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.