COLD RADIATION SHIELDS FOR MULTIELEMENT IR DETECTOR ARRAYS

Recently Sclar [N. Sclar, Infrared Phys. 28, 173 (1988); Ref. (1)] has compared the applicability of off-axis and integral cold shield designs to the multielement IR detector arrays. It was concluded that integral cold shields are more desirable for front-side illuminated arrays, whereas an off-axis cold shield design may be preferred for back-side illuminated arrays, because of the technological difficulties involved in the implementation of integral cold shield design in the latter. The present communication is an extension of Sclar's paper with supplementary information on cold radiation shield design for multielement IR detector arrays.