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Chapter 1:
Optical Bench Measurements on Imaging Systems
In this chapter we examine methods used in testing imaging systems, e.g., a multi-element photographic objective. We will consider a specific scenario. Suppose we are given the prototype aerial reconnaissance lens shown in Fig. 1.1. Our job is to run the lens through a battery of tests. We have to measure all basic parameters. Our results will help determine if its performance is sufficient to merit production and deployment to reconnaissance squadrons. Parameters that we wish to measure are the system focal length, f-number, axial color, field curvature, distortion, transmission, relative illumination falloff, veiling glare, and thermal response. This work will continue in Chapter 2 with measurements on spherical aberration, astigmatism, coma, system resolution, and modulation transfer function.
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