Method and electronic circuit for controlling of a supply voltage of a laser diode
US7599412B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2004 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | May 29, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0683
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a method for initializing a control of a supply voltage of a light source, such as a laser diode, the light source being arranged in a first circuit configuration having an associated first reference voltage level or the light source being arranged in an alternative second circuit configuration having an associated alternative second reference voltage level, the method comprising the steps of gradually changing the supply voltage into the direction of the first reference voltage, measuring a light emission of the light source while gradually changing the supply voltage, if no light emission is measured: starting the control of the supply voltage of the light source after the first reference voltage has been reached and if a light emission is measured gradually changing the supply voltage into the direction of the second reference voltage and starting the control of the supply voltage of the light source after the second reference voltage has been reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.