A family of optically compensated zoom lenses.
Several optically compensated zoom projection lenses have been designed. These lenses, used in special purpose film viewers and simulators, have unique characteristics not met by commercially available lenses. Unusually high resolution, large formats, and large magnification ranges have been achieved. This paper describes optical characteristics, method of design and design optimization, and measured performance data. Unique illumination requirements have led to unusual condenser system designs which are discussed.
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