Patent · US Expired

Microscope objective

US7643216B2 · kind B2 · utility

7Cited by

3References

15Claims

0Family size

Assignee

Carl Zeiss Micromanaging GmbH · DE

Inventors

Johannes Winterot · Jena, DE
Dirk Jahn · Twistringen, DE
Renhu Shi · Göttingen, DE
Ingo Fahlbusch · Göttingen, DE

Key dates

Filing date	Sep 28, 2005
Grant date	Jan 5, 2010
Priority date	—
Expiry date	Sep 28, 2025

Classification

Technology area (CPC G)Physics
CPC primaryG02B21/02
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention is directed to an objective, particularly for telescope-type stereomicroscopes. The objective comprises two lens groups, a first lens group and a second lens group. The first lens group, which faces the object plane, has a positive refractive power and comprises a plurality of lenses of which at least two form a cemented component. The second lens group, which is on the image side, has a negative refractive power and comprises a collecting cemented component and a diverging lens. The objective is characterized in that the following conditions B1 and B2 are met:where DAP represents the diameter of the exit pupil of the objective and ω1 represents the maximum field angle.

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