All commercial off-the-shelf optical and optomechanical assembly design for spaceborne low to medium resolution cameras

Abstract

We design a lens assembly derived from commercial off-the-shelf (COTS) optical and optomechanical components. The optical system is a Cooke triplet constructed using achromatic doublets. Numerically derived modulation transfer function (MTF) calculations show that the resulting Cooke triplet can resolve at 113 lp/mm, which is the Nyquist frequency of the detector. Finite element analyses (FEA) on the optomechanical assembly show that the assembly may survive launch and operational environment provided that the space craft resonant frequency and the assembly's resonant frequency do not match.