电光与控制, 2012, 19 (5): 87, 网络出版: 2012-05-11
红外系统变倍机构研究与分析
Study on Varifocal Mechanism Design for Infrared System
红外系统 变倍机构 光学系统 连续变焦 红外热像仪 infrared system varifocal mechanism optical system continuous zoom infrared thermal imager
摘要
红外系统具有成像质量好、探测灵敏度高、信噪比高、抗干扰能力强以及探测距离远等优点,在**、民用等各个领域得到广泛应用。红外系统对目标进行搜索与探测时,对多视场或连续变焦光学系统的需求日益增强,其中一个措施就是改变两个或两个以上透镜在光学系统中的位置,从而改变光学系统的焦距。从机械设计的角度出发,对几种变倍机构的构型、工作方式及设计要点进行较详细的说明,给出其各自的适用范围和优缺点,为红外热像仪的工程设计提供参考和依据。
Abstract
Since infrared (IR) system has some advantages such as good image qualiltyhigh signaltonoise ratio (SNR)strong antijamming ability and long distance detectionit has found a wide application in a lot of areas.When the IR system is used for target search and detectionthere is an increasing demand for multiple FOVs or zoom lens optical system.One method is changing two or more lenss location in order to change focal length in optical system.Based on the mechanical designthe configurationworking mode and design of the several varifocal mechanisms are introduced in detail.The applicable rangeadvantages and disadvantages of them are givenwhich may supply a reference for engineering design of the infrared thermal imager.
李运动, 孙树旺, 何磊. 红外系统变倍机构研究与分析[J]. 电光与控制, 2012, 19(5): 87. LI Yundong, SUN Shuwang, HE Lei. Study on Varifocal Mechanism Design for Infrared System[J]. Electronics Optics & Control, 2012, 19(5): 87.