Eye characteristic measuring apparatus
US7249852B2 · kind B2 · utility
3Cited by
3References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2003 |
| Grant date | Jul 31, 2007 |
| Priority date | — |
| Expiry date | Jul 6, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/1015
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Measurement of an eye characteristic is performed more accurately and at high speed by setting a measurement condition of a light receiving optical system with a long focal point or high sensitivity on the basis of an optical characteristic measured by a light receiving optical system with a short focal point or low sensitivity or high density. The optical characteristic of the subject eye is obtained on the basis of an output of a first light receiving part and/or a second light receiving part, and a change direction of the beam is estimated on the basis of an output signal from the second light receiving part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.