Patent · US Expired

Electromagnetically driven oscillating mirror

US4738500A · kind A · utility

47Cited by

7References

4Claims

0Family size

Assignee

Carl Zeiss Stiftung · DE

Inventors

Manfred Grupp · Königsbronn, DE
Horst Stacklies · Greding, DE

Key dates

Filing date	Oct 29, 1986
Grant date	Apr 19, 1988
Priority date	—
Expiry date	Oct 29, 2006

Classification

Technology area (CPC G)Physics
CPC primaryG02B26/08
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An electromagnetic drive system drives the oscillating secondary mirror or wobble mirror of a reflecting telescope. The driving force of the drive system is directly proportional to the current and the drive system is digitally controllable. By incorporating a tachometer generator and a contactless operating position measuring unit, it is possible to select such function curves for the leading and trailing edges of the wobble function which will permit a jolt-free drive of the mirror.

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