| US 7,522,274 B2 | ||
| Radiometers | ||
| Neil A Salmon, Malvern (United Kingdom) | ||
| Assigned to QinetiQ Limited, Farnborough, Hants (United Kingdom) | ||
| Filed on Dec. 21, 2006, as Appl. No. 11/642,741. | ||
| Application 11/642741 is a division of application No. 10/467798, abandoned, previously published as PCT/GB02/00745, filed on Feb. 21, 2002. | ||
| Claims priority of application No. 0104206.8 (GB), filed on Feb. 21, 2001. | ||
| Prior Publication US 2007/0121103 A1, May 31, 2007 | ||
| Int. Cl. G01J 1/56 (2006.01) | ||
| U.S. Cl. 356—216 [356/218] | 6 Claims |
| 1. A scanning imaging radiometer comprising:
scanner components,
a detector, and
a control processor adapted to control the operation of the scanner components; wherein the scanner components comprise:
a focussing element adapted in use to focus radiation onto the detector and having an optical axis,
a detector field of view director comprising a rotatable inclined reflector plate whose normal is adapted to rotate at an
angle inclined to the optical axis, and
a quarter wave plate disposed between the reflector plate and the focussing element; and wherein the detector has a detector
feed provided disposed between the focussing element and the reflector plate.
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