General Electric Spryte Automatic Lens Correction Program. Part II. Wide Angle Optical Projection System

摘要

An optical design study was undertaken with the objective of conceiving and proving feasibility of an optical system which would provide a 25 degree binocular field of view for a typical head-up aircraft cockpit display. Preliminary work in evaluation of several novel concepts showed that a system using two concave ellipsoidal reflectors with a common focus and several refracting elements showed considerable promise. Existing computer programs were not adequate to evaluate the image-forming capability of such a system. Therefore, it was necessary to devise a new computer program which would permit the design, utilizing automatic correction and the evolution of this complex type optical system. (Author)