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长春光学精密机械与物... [1]
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会议论文 [1]
发表日期
2011 [1]
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Design of reimaging F/1.0 long-wavelength infrared optical system (EI CONFERENCE)
会议论文
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
Zhang X.
;
Liu B.
;
Jia H.-G.
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提交时间:2013/03/25
A reimaging F/1.0 long-wavelength infrared optical system is proposed. The design has a flexible opto-mechanical layout. The design process is as follows. Firstly
the catadioptric reimaging system consists of two reflecting mirrors and a relay lenses. Two reflecting mirrors make up of the first imaging system and are therefore free of chromatic aberrations
while low dispersion lenses were used in the reimaging system
so the optical system do not need achromatic design for a high image quality. Then
to correct high-order aberrations resulting from large relative aperture
more parameters need to be used with aspheric or diffractive surfaces due to modern optic technology development. Here
aspheric is selected for easily manufacture. Finally
the design is completed with the help of ZEMAX software. The effective focal length of the objective is 120mm and the field of view (FOV) is 4. The simulated final design shows adequate image quality and the modulation transfer function (MTF) is close to diffraction limit. The effect of the surrounding environmental temperature is analyzed using the concept of thermal defocusing
and the thermal compensation is discussed. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
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