Apparatus and method for determining a position of an eye
US7478908B2 · kind B2 · utility
20Cited by
33References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2006 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Sep 27, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2009/00872
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for determining a position of a subject's cornea, comprising a camera, a first illumination apparatus adapted to provide a first beam of light and a first diffuse portion of light that are coincident, and a second illumination apparatus adapted to provide a second beam of light and a second diffuse portion of light, that are coincident. In some embodiments, the first, second, third and fourth images are disposed on the midpoints of a square, when a cornea is located along an optical axis of camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.