Curved focal plane arrays (FPAs) coupled with ball lenses can reduce spherical aberration, increase the field of view (FOV), and reduce the weight and cost of optical systems. These improvements over flat FPAs promise major upgrades for military systems. The Institute for Defense Analyses (IDA) has been investigating the potential applications of curved FPAs that are being developed in the Defense Advanced Research Projects Agency (DARPA) Hemispherical Array Detector for ...
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