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http://dx.doi.org/10.3807/KJOP.2015.26.3.162

Development of a MTF Measurement System for an Infrared Optical System  

Son, Byoung-Ho (Department of Measurement Science, University of Science and Technology)
Lee, Hoi-Yoon (Center for Space Optics, Korea Research Institute of Standards and Science)
Song, Jae-Bong (Center for Space Optics, Korea Research Institute of Standards and Science)
Yang, Ho-Soon (Department of Measurement Science, University of Science and Technology)
Lee, Yun-Woo (Department of Measurement Science, University of Science and Technology)
Publication Information
Korean Journal of Optics and Photonics / v.26, no.3, 2015 , pp. 162-167 More about this Journal
Abstract
In this paper, we developed a MTF (Modulation Transfer Function) measurement system using a knife-edge scanning method for infrared optics. It consists of an objective part to generate the target image, a collimator to make the beam parallel, and a detector to analyze the image. We used a tungsten filament as the light source and MCT (Mercury Cadmium Telluride) to detect the mid-infrared(wavelength $3-5{\mu}m$) image. We measured the MTF of a standard lens (f=5, material ZnSe) to test this instrument and compared the result to the theoretical value calculated using the ZEMAX commercial software. It was found that the difference was within ${\pm}0.035$ at the cut-off frequency (50 1/mm). Also, we calculated the A-type measurement uncertainty to check the reliability of the measurement. The result showed only 0.002 at 20 1/mm in spatial frequency, which means very little variation in the MTF measurement under the same conditions.
Keywords
Optics; Infrared Imaging; Optical standard and testing;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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