Acta Optica Sinica, Volume. 32, Issue 4, 422001(2012)
Mid-Infrared Zoom Optical System with Ratio of 25
For 320 pixel×240 pixel cooled staring focal plane array detector, a mid-infrared zoom optical system with ratio of 25 is designed. The system consists of a zoom system and a re-imaging system. The zoom system consists of two small zoom lenses, which can realize large zoom ratio; the re-imaging system can satisfy requirement of the cold shield efficiency, and the diameter of lens can be reduced because of it. The mid-infrared zoom optical system works in the range of 3.7~4.8 μm, it can realize 12~300 mm continuous zoom and satisfy requirement of 100% cold shield efficiency; F number of the system is 2.5. The zoom system has advantages such as a large zoom ratio, a large aperture, and short and smooth zoom paths.
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Zhou Hao, Liu Ying, Sun Qiang. Mid-Infrared Zoom Optical System with Ratio of 25[J]. Acta Optica Sinica, 2012, 32(4): 422001
Category: Optical Design and Fabrication
Received: Aug. 4, 2011
Accepted: --
Published Online: Mar. 17, 2012
The Author Email: Hao Zhou (89zhouhao@163.com)