Surgical microscope apparatus
US4878746A · kind A · utility
9Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1988 |
| Grant date | Nov 7, 1989 |
| Priority date | — |
| Expiry date | Apr 7, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A surgical microscope apparatus provided with a failure detecting device for conducting an initial examination and an ordinary examination of an illumination device and a failure detecting device for conducting the ordinary examination of an electric magnification and focusing device, in order to make it possible to self-examine what is defective and indicate the result when failure is caused. The failure of the illumination device is immediately indicated by the self examination of the failure detecting device when a power source is turned on for use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.