Laser beam scanning type eye fundus observing device
US5088811A · kind A · utility
6Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1991 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Apr 8, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/1025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A laser beam scanning type eye fundus observing device has a scanning optical system for scanning and illuminating an eye fundus with a laser beam spot and an observation image of the eye fundus is built up in accordance with a reflecting light of the scanning laser beam from various portions of the eye fundus. The laser beam scanning type eye fundus observing device further has an output level regulator for automatically regulating an output level of an image signal in accordance with a light quantity information of the various portions of the eye fundus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.