Corneal measurement apparatus and a method of using the same
US7648241B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2007 |
| Grant date | Jan 19, 2010 |
| Priority date | — |
| Expiry date | Dec 12, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/135
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for measuring a subject's cornea, comprising (A.) a slit projection subsystem comprising a light source, (B.) a mask subsystem disposed in a path of light from the light source, comprising a first slit mask defining a plurality of apertures, (C.) a movement apparatus adapted to move at least a portion of the slit projection subsystem, the movement apparatus configured and arranged such that, by moving the portion of the slit projection subsystem, portions of the light can be selectively transmitted through an aperture of the plurality of apertures toward the cornea, (D.) an imaging element configured and arranged to image at least one of the plurality of apertures onto the cornea, and (E.) an image capture subsystem arranged to capture images of the portions of light after the light impinges on the cornea.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.