Patent · US Active

Method and device for coupling out a partial beam having a very small beam percentage from an optical beam

US11402648B2 · kind B2 · utility

0Cited by

2References

4Claims

0Family size

Assignee

Jenoptik Optical Systems GmbH · DE

Inventors

Stephan Fahr · Jena, DE
Torsten Erbe · Jena, DE
Markus Augustin · Jena, DE

Key dates

Filing date	Nov 8, 2018
Grant date	Aug 2, 2022
Priority date	—
Expiry date	Sep 12, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG01J3/447
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to a device comprising a beam splitter and a method of using the device. The device comprises a beam emitting unit and a downstream beam splitter, which is formed by two adjacent planar plates of different materials. For a specified wavelength range of an optical beam from which a partial beam is to be coupled out by reflection, the material of the first planar plate has a minimum refractive index which is greater by a refractive index interval than the maximum ref ractive index of the material of the second planar plate. From the optical beam, which, collimated and linearly polarized parallel to a plane of incidence, impinges on the beam splitter at a certain angle of incidence, the partial beam having only a small summary percentage of the optical beam and a small spectral fluctuation range is coupled out.

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