Patent ID: 9535245
Date: 2017-01-03
CPC Classifications: G01J,G02B,G06K,H01L

Claim:
1. An optical system comprising: a structured relay optic configured to receive electromagnetic radiation representing a source image volume, the electromagnetic radiation including an interrogation beam from an interrogating device, the structured relay optic further configured to slice the source image volume into a plurality of image slices and to reimage the plurality of image slices onto a tilted image plane that is tilted relative to an optical axis of the optical system; foreoptics configured to direct the electromagnetic radiation to the structured relay optic; an imaging detector aligned with the tilted image plane and configured to reconstruct a an image from the plurality of image slices, and to reflect the interrogation beam off-axis with respect to the optical axis, the imaging detector having a first signature; a reflector configured to receive and reflect a portion of the interrogation beam to provide a retro-reflection, the reflector further configured to encode the retro-reflection with a second signature different from the first signature; and a beamsplitter positioned in an optical path between the foreoptics and the structured relay optic, the beamsplitter configured to direct the portion of the interrogation beam to the reflector, and to return the retro-reflection to the interrogating device.