Infrared focal-plane design for the comet rendezvous/asteroid flyby and Cassini visible and infrared ma

摘要

Abstract: A focal plane assembly combining hybrid electronic components with passive optical components within a single hermetically sealed package has been designed by Cincinnati Electronics to meet the performance requirements imposed by the Comet Rendezvous/Asteroid Flyby (CRAF) and Cassini Visible and Infrared Mapping Spectrometers (VIMSs). A single line array of 256 InSb photodiodes, accessed by two 1 $MUL 128 multiplexers, provides continuous spectral coverage from 0.85 to 5.1 $mu@m. Intrinsic field-of-view apertures and a unique order sorting filter require critical optical alignment within the hybrid. FPA performance requirements, design approach, and critical issues are discussed.!