Optical viewing device
US6819485B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2001 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Sep 25, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device for controlling the brightness of an optical signal overlaid on a specimen image includes: a main light source configured to illuminate a specimen with a main light source illumination; a main objective, configured to generate the specimen image in a viewer beam path; and a beam splitter configured to reflect the optical signal into the viewer beam path, where the optical signal is generated by a display, and an illumination of the display is selectable among the main light source illumination, a secondary light source illumination, and both, and where the secondary light source illumination is adjustable as a function of the main light source illumination. The device may be a surgical microscope. The illumination of the display by the main light source illumination may be indirect, where the display is illuminated substantially by light reflections of the main light source illumination from the specimen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.