Stereomicroscope for making transparent media visible and method therefor
US5619372A · kind A · utility
8Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1994 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Aug 10, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B90/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Phase-contrasting elements are arranged in the viewing beam paths of a stereomicroscope to make transparent media visible with rich contrast such as in the area of ophthalmologic surgery. The phase-contrasting elements make the transparent media visible as phase objects in the amplitude contrast. The phase-contrasting elements are selected in dependence upon the light source diaphragm which is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.