Patent ID: 9024253
Filing Date: 2015-05-05
Classification: G01J

Abstract:
1. A calibration system for a detector, the calibration system comprising: a plurality of radiation sources configured to emit electromagnetic radiation; a positioning mechanism disposed opposite the plurality of radiation sources, having a single degree of freedom with respect to the plurality of radiation sources; a source housing disposed adjacent the positioning mechanism; and a single mirror coupled to the positioning mechanism, and configured to rotate to a plurality of calibration positions outside the source housing, the single mirror in each of the plurality of calibration positions being configured to receive the electromagnetic radiation from a corresponding radiation source and to reflect the electromagnetic radiation to the detector, wherein the single mirror is the only mirror incorporated within the calibration system, wherein the single mirror and the detector form an optical path, wherein the positioning mechanism is configured to move the single mirror to a non-calibration position, in which the single mirror is stowed inside the source housing, outside of the optical path, and in which the single mirror does not reflect electromagnetic radiation to the detector, and wherein the source housing is configured to provide a protective environment for the single mirror in the non-calibration position.