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Multiconfiguration afocal freeform telescopes
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DOI：10.1364/OE.516961.png)
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An approach to designing multiconfiguration afocal telescopes is developed and demonstrated. Freeform surfaces are used to maximize the achievable diffraction -limited zoom ratio while staying in a compact volume for a two -position multiconfiguration afocal optical system. The limitations of these systems with three -mirror beam paths are discussed and subsequently overcome by introducing an additional degree of freedom. In a four -mirror beam path system, the goal of a 5x zoom ratio is achieved with a compensated exit pupil and diffraction -limited performance. A significant benefit in optical performance when using freeform surfaces is shown compared to more conventional surface types. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Keyword:
SYSTEMS
DESIGN
期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
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引用论文
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