Uncooled multispectral detectors and their applications

Volkmar Norkus; Guenter Hofmann; Christian Schiewe

doi:10.1117/12.252079

25 September 1996 Uncooled multispectral detectors and their applications

Volkmar Norkus, Guenter Hofmann, Christian Schiewe

Proceedings Volume 2894, Detectors, Focal Plane Arrays, and Applications; (1996) https://doi.org/10.1117/12.252079
Event: Photonics China '96, 1996, Beijing, China

Abstract

The article describes the basic design and essential properties of developed multispectral detectors. The presented detector concept on the basis of lithium tantalate (LiTaO₃), a pyroelectric material, makes the parallel measurement possible in four spectral channels in the wavelength range of typically 1 - 25 micrometers . The detector consists of an optical unit with the beam splitter and interference filters for the spatial and spectral dispersion of the incident total radiation and the responsive elements with appropriate low-noise preamplifiers. The detector is a discrete and compact component in a TO 8 transistor casing (empty set 14 mm X 10 mm) with an aperture of typically empty set 2 mm. Essential properties of a four-channel detector for the gas analysis (CO; CO₂; HC; REF) are described and the influence of the beam splitter geometry on the overlap of the measuring spots in the spectral channels is discussed. As a detector application a novel multichannel pyrometer is presented by means of which the influence of the object emissivity on the measuring accuracy has been reduced considerably.

Citation Download Citation

Volkmar Norkus, Guenter Hofmann, and Christian Schiewe "Uncooled multispectral detectors and their applications", Proc. SPIE 2894, Detectors, Focal Plane Arrays, and Applications, (25 September 1996); https://doi.org/10.1117/12.252079

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available