Dynamic range extension techniques for a wavefront sensor including use in ophthalmic measurement
US6550917B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2000 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Jan 30, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/027
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ophthalmic error measurement system includes a projecting optical system delivering light onto a retina of an eye, a pre-correction system which compensates a light beam to be injected into the eye for aberrations in the eye, the pre-correction system being positioned in between the projecting optical system and the eye, an imaging system which collects light scattered by the retina, and a detector receiving light returned by the retina from the imaging system. Use of the pre-correction system allows the end-to-end aberrations of the ocular system to be analyzed. The use of a pre-correction system also allows use of a minimized spot size on the retina, and all of its attendant advantages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.