Method and apparatus for wavefront sensing
US6452145B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | May 26, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/0825
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A wavefront sensor for detecting the wavefront produced by light waves from a light source comprises optically refractory or reflective means for receiving the light waves from the light source and producing two defocused pupil images at two different locations along an optical axis. A detector is positioned at a location spaced from the two locations of the two focused pupil images for the detector means to receive and detect two equally and oppositely defocused pupil images. A computer with appropriate software processes the characteristics of the two defocused pupil images from the detector to determine the curvature of the wavefront based on the light intensities with Dirichlet's boundary conditions for the light waves received by the wavefront sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.