Ophthalmic wavefront sensor operating in parallel sampling and lock-in detection mode
US8777413B2 · kind B2 · utility
14Cited by
41References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2012 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | May 23, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J9/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
One embodiment of the present invention is an ophthalmic wavefront sensor for use with an ophthalmic microscope to provide continuous measurements of the refractive state of an eye. The wavefront sensor operates in both parallel sampling and lock-in detection mode by synchronizing the pulsing of the light source with a multiple number of position sensing devices/detectors used for detecting the centroid position of the sampled sub-wavefronts. Other embodiments include a beam scanner to sample selected portions of the wavefront and a live image sensor and a tracking deflector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.