| 摘要 |
<p>An IR detector with a calibration source assembly (104) includes a cold cavity assembly tube (106) providing an internal vacuum (108), the tube (106) having a first end (110) providing a cold stop (112) and a second end (114) providing an IR focal plane (116) oriented towards the first end (110). The IR detector with a calibration source assembly (104) also includes a rotatable spectral filter wheel (118) optically coupled to an IR focal plane (116) of the detector, the filter wheel (118) having a plurality of areas (120) each of at least a minimum size, at least one area being a calibration area (120A). The calibration area includes: a substrate (122) having a first side (124) facing the IR focal plane (116) and a second side (126) opposite from the first side (124); a light transmitting edge section (128) disposed between the first side (124) and the second side (126); and, at least one light redirector (130) disposed at least partially within the substrate (122), the light redirector (130) structured and arranged to receive light from the edge (128) and to redirect the light out the first side (124). The IR detector with a calibration source assembly (104) also includes a light source (132) optically coupled to the edge section (128).</p> |
