Patent ID: 7948550
Filing Date: 2011-05-24
Classification: G02B,G06T,H04N

Abstract:
1. An electro-optic imaging system comprising: a rotationally symmetric triplet lens characterized by an optical MTF; a detector subsystem positioned to capture an image formed by the triplet lens, the detector subsystem having an array of detectors that define a Nyquist frequency for the detector subsystem, the optical MTF remaining above 0.1 and below 0.75 for all frequencies between 0.20 and 1.00 times the Nyquist frequency and for all image plane positions through at least one wave of defocus on either side of a nominal image plane; and a digital image processing subsystem coupled to the detector subsystem, that for at least some of the pixels in the image captured by the detector subsystem, provides normalized gain of at least 1.3 to at least some of the frequencies between 0.20 and 0.80 times the Nyquist frequency.