Compact mid-wavelength infrared zoom camera with 20:1 zoom range and automatic athermalization

被引：28

作者：

Kim, HS ^{[1
]}

Kim, CW ^{[1
]}

Hong, SM ^{[1
]}

机构：

[1] Agcy Def Dev, Taejon 305600, South Korea

来源：

OPTICAL ENGINEERING | 2002年 / 41卷 / 07期

关键词：

zoom camera; mid-wavelength infrared; athermalization; minimum resolvable temperature difference; microscanning;

D O I：

10.1117/1.1481048

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 Nyquist frequency of 4.5 cycles/mrad. The temperature range, being -30 to +55degreesC, in which the camera is to operate, is rather wide. The minimum resolvable temperature difference of the zoom camera is 0.3degreesC at 6 cycles/mrad. (C) 2002 Society of Photo-Optical Instrumentation Engineers.

引用

页码：1661 / 1667

页数：7

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