Light detecting circuit, laser distance measuring circuit and light detecting method
US7701556B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2007 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Jun 13, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light detecting circuit includes a power source circuit, an optoelectronic component, a switch and a Trans Impedance Amplifier (TIA) circuit. The power source circuit provides an electric signal. When the optoelectronic component is biased at a bias voltage, the optoelectronic component generates a corresponding current according to the received light density. The switch has a trigger receiver. After the trigger receiver receives a trigger signal, the switch turns on and the optoelectronic component is biased at the bias voltage. The TIA circuit transforms the corresponding current to a corresponding voltage and then calculates the corresponding voltage to obtain the light density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.