Patent ID: 8111319

Claim:
A digital-optical imaging system comprising: imaging optics and a sensor array, the imaging optics positioned to produces images on the sensor array; the imaging optics characterized by between approximately 2 and 8 waves of third order spherical aberration W 040 ; the sensor array characterized by an undersampling factor U in the range of approximately 0.05 to 0.30 where U is the ratio of the Nyquist frequency of the sensor array divided by the diffraction-limited frequency of the imaging optics; and an image processor coupled to the sensor array, the image processor applying a space-invariant FIR filter to the images captured by the sensor array, the space-invariant FIR filter having at least N 0 rows and N 0 columns but not more than N 1 rows, where N 0 =max{3 ,X} N 1 =2 N 0 +1 X=a 1 U 2 +a 2 W 040 2 +a 3 UW 040 +b 1 U+b 2 W 040 +c a 1 =−172.4 , a 2 =−0.25 , a 3 =2.5 , b 1 =101.0 , b 2 =4.35 and c=− 18.2.