Accession Number : ADA266291


Title :   Description of an Infrared Zoomcollimator (Beschrijving van een Infrarood Zoomcollimator)


Descriptive Note : Final rept.


Corporate Author : FYSISCH EN ELEKTRONISCH LAB TNO THE HAGUE (NETHERLANDS)


Personal Author(s) : De Jong, A N


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a266291.pdf


Report Date : Mar 1993


Pagination or Media Count : 15


Abstract : The performance of thermal imagers is generally tested by means of test targets, put in the focal plane of a collimator. For MRTD measurements bar targets are used with a certain frequency and variable temperature contrast. The zoomcollimator, described in this report provides a variable spatial frequency, which is more comparable to the range variation of a target in the terrain with certain size and temperature contrast. In the focal plane also a line source and a circular source with variable temperature contrast can be used, in order to measure the MRTD in an objective way conform the method, developed at TNO-FEL


Descriptors :   *TARGET DETECTION , *THERMAL IMAGES , *COLLIMATORS , *ZOOM LENSES , INFRARED DETECTION , TEMPERATURE , FOCAL PLANES , RANGE FINDING , TERRAIN


Subject Categories : Infrared Detection and Detectors
      Optics


Distribution Statement : APPROVED FOR PUBLIC RELEASE