Method and apparatus for illuminating and imaging eyes through eyeglasses using multiple sources of illumination
US6055322A · kind A · utility
116Cited by
3References
16Claims
0Family size
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Key dates
| Filing date | Dec 1, 1997 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Dec 1, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/156
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A reliable method of illuminating and imaging an eye through eyeglasses uses a carefully selected subset of multiple monochromatic light sources, a camera with an imager that exhibits minimal blooming, and a narrow-bandwidth optical bandpass filter to filter out most of the ambient illumination while passing most of the light from the system's own illuminator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.