Diffractive monitor and system
US6591043B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2002 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Jun 10, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/183
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A monitor for a light beam creates a monitor beam by deflecting a portion of the application beam and further manipulating the monitor beam and/or the application beam to allow more efficient use thereof. For example, the monitor beam may be collimated to allow an increase in spacing between the device outputting the light beam and a detector for sensing the monitor beam. Alternatively or additionally, the monitor beam may be focused to allow use of a smaller detector and of a smaller percentage of the application beam. The diffractive element deflecting the beam may be either transmissive or reflective. The additionally manipulation of the monitor beam and/or the application beam may be provided by the same diffractive element which deflects the beam, which is particularly useful when the diffractive element is reflective, and/or by additional optical elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.