Proceedings PaperNon-Image-Forming Optical Components
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In this paper we review the geometrical characteristics of optical components such as plane-parallel plates, flat mirrors, and prisms that serve extremely useful purposes in optical instruments, but nominally do not contribute optical power and, hence, cannot form images by themselves. The principal uses of such components as windows; filters; reticles; beam-folding optics; beamsplitters/combiners; image erectors, rotators and scanners; etc. are addressed. Representative configurations for these components and typical designs for mounting them into common types of instruments also are described.