Patent · US Active

Standard for wavelength and intensity for spectrometers

US8836938B2 · kind B2 · utility

0Cited by

4References

17Claims

0Family size

Assignee

Carl Zeiss Microscopy GmbH · DE

Inventors

Wilhelm Schebesta · Jena, DE
Nico Correns · Weimar, DE
Lutz Freytag · Jena, DE
Michael Rode · Vancouver, US

Key dates

Filing date	May 19, 2008
Grant date	Sep 16, 2014
Priority date	—
Expiry date	May 19, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/359
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The description relates to a standard for wavelength and intensity for spectrometers, particularly for calibrating and testing measurement heads in spectrometers which are usable primarily in the near infrared region (NIR) of the spectrum. The standard comprises a holder and a plate body arranged in the holder. The plate body is made of transparent plastic with high strength and dimensional stability over a large temperature range. The plastic has distinct absorption bands throughout the entire NIR range and has a chemical structure and composition ensuring an extensive moisture barrier against water absorption and water release in a reliable and stable manner over time. The plate body advantageously comprises an amorphous, transparent copolymer based on cyclic and/or linear olefins.

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