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http://dx.doi.org/10.3807/KJOP.2011.22.1.016

Modulation Transfer Function System for a Mid-infrared Lens by Knife-edge Scanning Technique  

Song, Se-Yong (Department of Applied Optics and Electromagnetics, Hannam University)
Jo, Jae-Heung (Department of Applied Optics and Electromagnetics, Hannam University)
Hong, Sung-Mok (Center for Space Optics, Korea Research Institute of Standards and Science)
Lee, Hoi-Youn (Center for Space Optics, Korea Research Institute of Standards and Science)
Lee, Yun-Woo (Center for Space Optics, Korea Research Institute of Standards and Science)
Publication Information
Korean Journal of Optics and Photonics / v.22, no.1, 2011 , pp. 16-22 More about this Journal
Abstract
We fabricate a measuring system to measure the modulation transfer function (MTF) of a mid-infrared imaging silicon lens by using the knife-edge scanning technique. In particular, we measure on-axial tangential MTF of the silicon lens with the focal length of 50 mm and F-number F/4 in the wavelength band of mid-infrared between $3\;{\mu}m$ and $5\;{\mu}m$. In order to obtain the infinite object, the off-axial parabolic reflector with the focal length of 2.545 m is utilized. In the comparison with measured MTF data and designed MTF values curve, we find that the tolerance of measured MTF data below the spatial frequency of 7 lp/mm is within 2%.
Keywords
Modulation transfer function; Edge spread function; Mid-infrared lens; Infrared MTF system;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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