Design and implementation of an integrated and rapidly assembled infrared three-band optical system  

作　　者：Shuanglong Tan Yulin Wang Guangwei Shi Shuaiwei Mu Xin Zhang Lin Ma 

机构地区：[1]Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Jilin 130033,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]State Key Laboratory of Advanced Manufacturing of Optical Systems,Jilin 130033,China

出　　处：《Astronomical Techniques and Instruments》2025年第2期88-99,共12页天文技术与仪器(英文)

基　　金：National Natural Science Foundation of China(12073028,12473084).

摘　　要：Continuing advancement in astronomy,space exploration,and scientific detection,has increased demand for infrared multi-band detection systems.Traditional three-band optical systems,designed to simultaneously image at infrared short-wave,mid-wave,and long-wave bands typically rely on dispersive elements,leading to bulky sizes,complex system architectures,low efficiency,and challenges in rapid assembly.To overcome these obstacles,in combination with the latest third-generation infrared detectors,we propose a design for a compact and lightweight three-band optical system,with infrared capabilities in all three required bands.The core of this approach is an integrated design philosophy that emphasizes the high steepness of mirror surfaces.This design achieves uniform correction and optimization of chromatic aberration and off-axis aberration across the spectral range.We introduce a novel integration of optical and mechanical elements to replace traditional assembly,reducing manufacturing and assembly errors,and degrees of freedom,associated with high-power optical elements.Confirming the effectiveness through a combination of simulations and experimental comparisons,the measured mid-wave full-field transfer function exceeds 0.405 at 17 lp/mm,satisfying the imaging requirements of the system.The optical system is lightweight and compact,with a total mass under 408 g and a compact volume of justΦ112 mm×117 mm.This serves as a valuable reference for the engineering application of high-performance,compact multi-band infrared composite detection systems for astronomy and space exploration.

关 键 词：Three-band infrared INTEGRATED Rapid assembly Modulation Transfer Function(MTF) 

分 类 号：P111[天文地球—天文学]