Device and method for optically measuring the transmission and diffusion of ocular media
US8398237B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 8, 2009 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | May 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/4785
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical device for measuring the transmission and diffusion of a tissue of the front segment of an eye, includes: a light source; an optical collimation system for directing the collimated light beam towards a tissue of the front segment of an eye to be characterized; an optical mire placed on the optical path between the optical collimation system and the tissue; an optical imaging system capable of receiving a light beam transmitted by the mire and the tissue and capable of forming an image of the mire on an image detector; and an image processing system capable of calculating a modulation transfer function for the tissue from an image of the mire through the ocular medium. The optical mire includes a set of alternately light and dark angular sectors radially distributed from a central point. Different image processing methods for extracting a function representing the transmission and diffusion characteristics of the tissue are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.