System and method for fabricating components of precise optical path length
US6459487B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Sep 4, 2001 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | Sep 4, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29358
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical components, particularly microoptic glass components used in synthesizing birefringence in filter systems based on polarization interferometer techniques, are fabricated using systems and methods which provide accurate frequency periodicity measurements. These measurements are derived from differential delays induced by in-process glass elements between beam components in a polarization interferometer unit and from progressive wavelength scanning across a wavelength band of interest. The consequent sinusoidal output variation has peak to peak spacings which are measured to provide frequency periodicity values from which precise length corrections for the optical elements can be calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.