Method and apparatus for aligning diffraction grating
US7030983B2 · kind B2 · utility
0Cited by
6References
14Claims
0Family size
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Key dates
| Filing date | Jun 27, 2003 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Oct 29, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and an apparatus for aligning the longitudinal direction of grooves of a diffraction grating to a predetermined direction. The method and apparatus detect a diffracted light pattern sent from the diffraction grating, and displace the diffraction grating such that the direction of an arranging direction obtained from the diffracted light pattern is aligned in the predetermined direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.