Abstract: The design, manufacture and testing of a high aperture and wide field of view optical system is reported. Under specified constraints, the design is discussed in terms of aperture, studying its effects on the performance, the barrel length, the weight and the costs of the system. Some design criteria are detailed, and mounting techniques are outlined in order to obtain optimum position and alignment of the lenses. A f/1.8 objective is described in particular, and system tolerances are given. Interferometric tests on prototype systems are required, comparing the results with the design data.!6
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