Patent ID: 8570522

Claim:
A system, comprising: a compound lens comprising at least two lenses disposed in a manner that provides for a first focal plane at a first end of the compound lens and a second focal plane at a second end of the compound lens; a first light source configured to direct light toward the first focal plane, a light beam from the first light source having an angle of bias from an optical center axis of the compound lens of greater than or equal to zero degrees and less than or equal to forty-five degrees; a second light source configured to direct light toward the first focal plane, a light beam from the second light source having an angle of bias from the first focal plane of less than or equal to forty-five degrees and greater than or equal to zero degrees; and an image capture device disposed at the second end and configured to capture light that, before being captured by the image capture device, is directed through at least part of the compound lens before being reflected from the first focal plane and directed, from the first focal plane, toward the image capture device via a first lens and a second lens comprised in the compound lens, where the first light source is between the first lens and the second lens.