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2楼: Originally posted by slimmy at 2015-08-27 21:23:51
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The design of MWIR/LWIR multiple FOV optical system.
Infrared zoom optical system design based on 480x6 focal plane array.

The design of MWIR/LWIR multiple FOV optical system

Zhang, Liang1 ; Mao, Xin1; Wang, He-Long1

Source: Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves, v 32, n 3, p 254-258+264, June 2013; Language: Chinese;  ISSN: 10019014;  DOI: 10.3724/SP.J.1010.2013.00254; Publisher: Chinese Optical Society

Author affiliation:
1 The Electro-Optical Equipments Institute of AVIC, Luoyang 471023, China

Abstract:
The design of an infrared multiple FOV optical system with a MWIR/LWIR dual-band staring focal plane array detector was introduced. Wide medium narrow FOV was realized by inserting different sets of lens groups in narrow optical path. The harmonic diffraction theory and aspheric design method were used in the aberration balance. The operating wavelength region is 3 to 5 μm and 7.7 to 9.5 μm, F-number is 3, and zoom ratio is 18:1. The results indicate that the modulation transfer functions (MTF) of all FOV are approaching to diffraction limit, 70 percent medium-wave infrared encircled energy and 60 percent long-wave infrared encircled energy are concentrated in one pixel of detector. Moreover, it could obtain well optical performance in all temperature range. The dual-band optical system could be widely applied in military and civilian opto-electronic detective fields.(10 refs)

Main heading: Optical systems
Controlled terms: Diffraction
Uncontrolled terms: Aberration balance  -  Diffraction limits  -  Dual-band  -  Focal plane array detector  -  Multiple FOV  -  Operating wavelength  -  Optical performance  -  Temperature analysis
Classification Code: 741.1 Light/Optics -  741.3 Optical Devices and Systems

Database: Compendex，