1.
Appl Opt
; 38(4): 631-7, 1999 Feb 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-18305656
RESUMO
We present a new technique for measuring the modulation transfer function (MTF) of a focal plane array (FPA). The main idea is to project a periodic pattern of thin lines that are canted with respect to the sensor's columns. Practically, one aims the projection by using the self-imaging property of a periodic target. The technique, called the canted periodic target test, has been validated experimentally on a specific infrared FPA, leading to MTF evaluation to as great as five times the Nyquist frequency.