Light output control device
US6975813B1 · kind B1 · utility
11Cited by
12References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2000 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Feb 17, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/06825
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Using a switching signal from a coarse/fine switching and operation mode switching circuit, the width of change of a counter control value during power up is increased, and the width of change is reduced once a steady state is reached. In the steady state, the frequency of updating is limited by a control signal from an update permit control circuit. In the steady state, the frequency band of a current source in an LD driving circuit is reduced in width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.