Patent · US Expired

Illuminating arrangement for a surgical microscope

US5973829A · kind A · utility

6Cited by

7References

5Claims

0Family size

Assignee

Carl Zeiss Stiftung · DE

Inventors

Gerhard Moller · Aalen, DE
Joachim Steffen · Lauchheim, DE
Christian Lucke · Oberkochen, DE

Key dates

Filing date	Sep 8, 1998
Grant date	Oct 26, 1999
Priority date	—
Expiry date	Sep 8, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG02B21/082
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention is directed to an illuminating arrangement (5) for a surgical microscope (1) having an illuminating beam path (7) which runs essentially coaxially to the optical axis (9) of the surgical microscope. The illuminating arrangement (5) includes an optical ancillary element (15) having a positive refractive power. The ancillary element (15) can be selectively pivoted into and out of the illuminating beam path. The illuminating aperture in the region of the optical axis (9) of the surgical microscope (1) is increased by pivoting the optical ancillary element (15) into the illuminating beam path (7). This is done without changing the viewing focal intercept of the surgical microscope (1).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.