Patent · US Active

Phase filters for a scanning microscope

US9250429B2 · kind B2 · utility

0Cited by

3References

19Claims

0Family size

Assignee

LEICA MICROSYSTEMS CMS GMBH · DE

Inventors

Hilmar Gugel · Dossenheim, DE
Arnold Giske · Sandhausen, DE
Marcus Dyba · Wetzlar, DE
Roland Seifert · Heidelberg, DE
Bernd Widzgowski · Dossenheim, DE

Key dates

Filing date	Jun 1, 2012
Grant date	Feb 2, 2016
Priority date	—
Expiry date	May 28, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG02B21/248
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical device includes: a focusing optic that focuses a light beam in a focal plane; at least two phase filters for selectively focusing the light beam and effecting a phase shift of the light beam; and a filter wheel supporting the at least two phase filters which are individually introducible along an optical axis of the light beam, where the filter wheel is rotationally adjusted in relation to the optical axis by a stepper motor and linearly adjusted in an r-direction along a plane of the filter wheel by a linear adjustment mechanism.

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