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非制冷热成像长波红外两档变焦光学系统
Design of uncooled LWIR thermal imager Switch-Zoom Optical System
【摘要】 与红外连续变焦光学系统相比,红外两档变焦光学系统具有结构简单、装调容易、透射比高等优点。研究了红外两档变焦光学系统的设计方法并给出了具体设计实例,该系统采用轴向移动式变焦方式,设计结果表明,在-20℃~40℃的温度范围内,空间频率14 lp/mm处,宽视场和窄视场都具有良好的成像质量。
【Abstract】 Compared with the infrared continuous zoom optical system,infrared switch-zoom system has many advantages,suan as simple structure,easy fixing,high transmission and so on.The principle of infrared switch-zoom optical system is analyzed,and a example has been presented.The optical configuration is based on the axial motion of a lens group along the optical axis.When spatial frequency is 14 lp/mm,both the wide-FOV and narrow-FOV show high image quality in the temperature range-20℃~ 40℃.
【基金】 国家自然科学基金资助课题(编号:60808028,40301031)
- 【文献出处】 红外技术 ,Infrared Technology , 编辑部邮箱 ,2009年03期
- 【分类号】TH74
- 【被引频次】9
- 【下载频次】451