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Optical Engineering

Compact MWIR zoom camera with 20:1 zoom range and automatic athermalization
Author(s): Hyun Sook Kim; Chang Woo Kim; Seok-Min Hong
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Paper Abstract

A compact mid-wavelength infrared zoom camera with a zoom range of 20:1 and automatic athermalization has been developed. The moving groups for a wide zoom range are only two lens groups and the loci of zoom are very simple, which allows easy access of optomechanical and electromechanical design. In addition, the microscanning technique was introduced to improve resolving power. We acquired increased resolving power of 7.6 cycles/mrad, superior to the original Ny- quist frequency of 4.5 cycles/mrad. The temperature range, being -30 to + 55°C, in which the camera is to operate, is rather wide. The minimum resolvable temperature difference of the zoom camera is 0.3°C at 6 cycles/mrad.

Paper Details

Date Published: 1 July 2002
PDF: 7 pages
Opt. Eng. 41(7) doi: 10.1117/1.1481048
Published in: Optical Engineering Volume 41, Issue 7
Show Author Affiliations
Hyun Sook Kim, Agency for Defence Development (South Korea)
Chang Woo Kim, Agency for Defence Development (South Korea)
Seok-Min Hong, Agency for Defense Development (South Korea)

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