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Step-zoom dual-field-of-view infrared telescope

机译:步进变焦双视野红外望远镜

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The design of a dual-field-of-view telescope for an 8-12- mum imaging waveband is described. Preliminary calculations are made to determine the first-order parameters of the narrow- and the wide-field modes. To achieve a switchable dual-field-of-view system, one uses an optical configuration based on the axial motion of a single lens group along the optical axis. The same lens is also used for focusing at near objects and for athermalization by small axial movement. A total of six lenses with one conic surface are used in the design, making the telescope cost effective and lightweight. The final optical design is presented, along with the aberrations curves and modulation transfer function plots, showing excellent performance in both fields of view. (C) 2003 Optical Society of America. [References: 14]
机译:描述了用于8-12毫米成像波段的双视场望远镜的设计。进行了初步计算以确定窄场和宽场模式的一阶参数。为了实现可切换的双视野系统,人们使用了一种光学配置,该配置基于单个透镜组沿光轴的轴向运动。相同的透镜还用于聚焦在近处的物体以及通过较小的轴向移动进行消热。设计中总共使用了六个具有一个圆锥形表面的透镜,这使该望远镜既经济又轻便。提出了最终的光学设计,以及像差曲线和调制传递函数图,在两个视场中均显示了出色的性能。 (C)2003年美国眼镜学会。 [参考:14]

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