Photometer
US6404488B1 · kind B1 · utility
1Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 6, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Sep 6, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/44
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Photometer comprising a photo diode, arranged for producing an electric current, proportional to the intensity of picked-up light, the photo diode being linked by the intermediate of a resistance to an operational amplifier equipped with a bandpass filter, the value of the resistance is sized in such way as to level the resonance peak in the pass-band of the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.