Eye length measurement apparatus
US7800759B2 · kind B2 · utility
9Cited by
10References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 11, 2007 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Mar 23, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B2290/35
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An interferometric axial eye length measurement apparatus having a light source adapted to produce a beam of partially coherent light, a first mirror and a second mirror disposed in the reference arm, and a processor adapted to control at least the second mirror such that a corneal interference peak and a second interference peak have a non-zero separation. There is at least one variable delay optical element having a delay signal, wherein the delay signal corresponding to a region between the corneal interference peak and second interference peak is substantially linear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.