Laser diode package having an optical power monitoring function
US5920585A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1997 |
| Grant date | Jul 6, 1999 |
| Priority date | — |
| Expiry date | Apr 18, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0683
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser diode package having an optical power monitoring function includes a monitor diode for monitoring an optical power of the light emitted from a laser diode. In the laser diode package, an optical member has a projection window for advancing the light emitted from the laser diode to a desired direction and a reflection surface from which the light emitted from the laser diode is reflected. The monitor diode receives the light reflected from the reflection surface of the optical member in order to monitor an optical power of the light emitted from the laser diode. A slot is installed on an area except for an optical path which is formed by the light projected via the projection window of the optical member, for shielding ambient light. Thus, the laser diode package having an optical power monitoring function prevents a mix-operation of the monitor diode due to the ambient light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.