Patent ID: 9007586
Filing Date: 2015-04-14
Classification: G01J,G02B

Abstract:
1. A method, comprising: collecting a plurality of light bundles at a lens, each light bundle emanating from a different field point of an object plane and having a center ray at least substantially parallel to an optical axis of the lens; the lens directing the plurality of bundles of light such that the center ray of each of the plurality of light bundles is directed through an aperture stop and onto a pupil relay, the aperture stop positioned at or near a focal point of the lens and such that the directed plurality of light bundles overlap at a plane of the aperture stop; the pupil relay imaging the plane of the aperture stop onto a sensor array, wherein collecting comprises collecting, at the lens, a first plurality of light bundles emanating from a first sample positioned a first distance from the lens and then collecting, at the lens, a second plurality of light bundles emanating from a second sample positioned a second distance from the lens, the method further comprising: analyzing a first output of the sensor array corresponding to the first plurality of light bundles to identify a first color; and analyzing a second output of the sensor array corresponding to the second plurality of light bundles to identify a second color, the identified second color being substantially identical to the identified first color; wherein the second distance is less than the first distance and the first and second samples are of substantially the same color.