Device for measuring temperature without contact

US6234669A · kind A · utility

Assignee

• Raytek GmbH · US

Inventors

• Ulrich Kienitz · Berlin, DE
• Volker Schmidt · Lexington, US
• Uwe Klonowski · Berlin, DE

Key dates

• Filing date: Aug 21, 1998
• Grant date: May 22, 2001
• Expiry date: Aug 21, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S33/21
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Device for contactless temperature measurement of an object with an optical system which images into the finite and a detector, wherein an image of the detector is imaged by the optical system along an optical axis onto a measurement spot on the object in such a way that the image of the detector reduces from the optical system to a sharp point measurement spot and then enlarges, and also with a sighting arrangement which identifies the outer limit of the measurement spot by means of visible sighting rays. Each sighting ray is aligned obliquely with respect to the optical axis in such a way that each sighting ray can be used both before and also after the sharp point measurement spot to identify the measurement spot.