Intraocular substance measuring apparatus
US5885224A · kind A · utility
Inventor
Key dates
| Filing date | Oct 30, 1996 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Oct 30, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/6821
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The direction of an optical axis of an excitation optical system is so set that the same intersects with an optical axis of a photoreceiving optical system on a cornea and an excitation light beam is not incident upon a crystalline lens through a pupil. The photoreceiving optical system comprises a one-dimensional solid-state image pickup device as a photodetector, and a slit is arranged on a light incidence side of the one-dimensional solid-state image pickup device for distinguishing measuring light generated from the cornea from that generated from other eyeball portions and introducing the same into the one-dimensional solid-state image pickup device. Raman scattered light or fluorescence generated from the cornea can be detected by that of photoelectric conversion elements of the one-dimensional solid-state image pickup device positioned on the optical axis of the photoreceiving optical system, so that an intraocular substance is obtained on the basis of its detected value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.