Laser apparatus with control circuit for stabilizing laser output
US4580044A · kind A · utility
32Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1983 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | Jun 1, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0683
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser light source device in which the intensity of laser light emitted from a laser diode is detected, the detected value of the light intensity is compared with a predetermined value to generate a binary signal, the binary signal is used to control the count mode of an up/down counter, and a current for driving the laser diode is controlled on the basis of the output of the up/down counter, to prevent the intensity of laser light from decreasing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.