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首页> 外文会议>Conference on Optical Design and Testing; 20071112-15; Beijing(CN) >Design of Infrared Zoom System with Rotating Lens Group
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Design of Infrared Zoom System with Rotating Lens Group

机译：带旋转透镜组的红外变焦系统设计

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摘要

In surveillance applications there is a need for infrared zoom systems which give two fields of view. For such systems long operation range is the most critical parameter which is bound up with focal length and transmittance of systems. In this paper the design of an infrared zoom system with rotating lens group is described. Different from the conventional axially moving zoom systems, this system is based on a rotating mechanism consisting of two separated lenses. The system achieves dual FOVs due to different magnifications. In narrow field of view mode, the system has long focal length and higher transmittance because the rotating lens group is outside the optical path. The final design is an infrared zoom system operating in 3μm～5μm, with a F number of 4.0, EFL of 250mm/62.5mm. This paper contains the calculation of first-order parameter, the optimum design of rotating motion, the analysis of aberrations, MTF, and Narcissus, This designed system has diffraction limited image quality of in both FOVs.
机译：在监视应用中，需要提供两个视野的红外变焦系统。对于这样的系统，长的操作范围是最关键的参数，其与系统的焦距和透射率有关。在本文中，描述了具有旋转透镜组的红外变焦系统的设计。与传统的轴向移动变焦系统不同，该系统基于由两个分离的镜头组成的旋转机构。由于放大倍数不同，该系统可实现双重视场。在狭窄的视野模式下，该系统具有长焦距和更高的透射率，因为旋转透镜组在光路之外。最终设计是一个红外变焦系统，工作在3μm〜5μm，F值为4.0，EFL为250mm / 62.5mm。本文包含一阶参数的计算，旋转运动的最佳设计，像差，MTF和水仙的分析。此设计的系统在两个FOV中均具有衍射受限的图像质量。

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