Microscope with a camera and automatic color temperature balance
US5022744A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1989 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Apr 26, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/361
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A microscope is disclosed having an illumination device that includes a color temperature regulating device and a color temperature measurement device. The color temperature regulating device includes a light guide and two conversion filters that are disposed on a carrier and are adjustable in a motor-driven manner. Moreover, a color temperature control device is provided, which compares the color temperature determined in the measurement device with a predetermined theoretical value and supplies a corresponding signal to the color temperature regulating device. Furthermore, a measurement or regulating device for the intensity of illumination or light intensity is provided, which compensates the change of light intensity by a motor-controllable diaphragm in the illumination beam path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.