Microscopes including illumination field diaphragms
US11385447B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2019 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Oct 4, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0018
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Surgical microscopes are provided including at least one ocular, an objective lens; a collimated space between the at least one ocular and the objective lens; an illumination system optically coupled into the collimated space of the surgical microscope, wherein an illumination from the illumination system is directed along a path at least partially contained within the collimated space of the surgical microscope and through the objective lens; and one of a field diaphragm and obscuration mask positioned within the illumination system, and outside of a field of view of the at least one ocular, wherein the one of the field diaphragm and the obscuration mask blocks, attenuates or diverts rays from the illumination system that reflect from a surface of the objective lens such that the reflected rays are not visible through the at least one ocular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.