Measurement of filter attenuation in the 10-um region

Malcolm J. Kent

doi:10.1117/12.373618

29 December 1999 Measurement of filter attenuation in the 10-μm region

Malcolm J. Kent

Proceedings Volume 4016, Photonics, Devices, and Systems; (1999) https://doi.org/10.1117/12.373618
Event: Photonics Prague '99, 1999, Prague, Czech Republic

Abstract

IR imaging sensors are generally designed to be as sensitive as possible. This makes them vulnerable to dazzle and damage by attack from in-band lasers. An obvious method of protecting these sensors is to include rejection filters in the optical system. The required rejection ratio may be many orders of magnitude. Of particular interest is the possible application of rejection filters to protect thermal imagers. Some difficulties have been experienced in the laboratory measurement of the rejection ratio of such filters. These problems are explained and methods to overcome them are discussed so leading to a reliable method of measurement.

Citation Download Citation

Malcolm J. Kent "Measurement of filter attenuation in the 10-μm region", Proc. SPIE 4016, Photonics, Devices, and Systems, (29 December 1999); https://doi.org/10.1117/12.373618

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