Patent ID: 8988590
Filing Date: 2015-03-24
Classification: G01J,G02B,G03B,G06K,H04N

Abstract:
1. An imaging apparatus having a solid state auto-focus, the apparatus comprising: a broadband light source configured to illuminate an object to be imaged; an objective lens module configured to focus the broadband light reflected from the object, wherein the objective lens module has a chromatic aberration that separates focal planes of different wavelengths of light; a two-dimensional image sensor configured to capture image data of the object; a two-dimensional color filter array configured to filter light reflected from the object before reaching the image sensor, wherein the filtering comprises transmitting only one band of wavelengths at certain positions in the array, and at least two bands of wavelengths are transmitted over the array; a range finder configured to determine a distance of the object from the image sensor; and, a processor configured to construct a luminance plane containing an image of the object by adding weighted high and low spatial frequency contributions from the image data for each of the bands of wavelengths, wherein the weighting of the contributions is based at least upon the distance of the object from the image sensor.