Patent ID: 7106510
Filing Date: 2006-09-12
Classification: G02B

Abstract:
1. Imaging apparatus for imaging an object onto a detector, comprising: a lens structure disposed between the object and the detector and configured for producing transverse ray intercept curves which are substantially straight, sloped lines; a wavefront coding element disposed between the object and the detector and configured for affecting a phase of light directed through tbe wavefront coding element such that a modulation transfer function of the lens structure and the wavefront coding element, combined, has reduced variation, over a range of spatial frequencies and caused, at least in part, by aberrations of the lens structure, as compared to a modulation transfer function of the lens structure, alone, without the wavefront coding element; and a post-processor configured for post-processing data from the detector to generate an image with an improved modulation transfer function, over the range of spatial frequencies, as compared to the modulation transfer function of the lens structure and the wavefront coding element.