微型平像场近红外光谱仪的消杂散光设计  

Suppression of stray light in micro flat-field near-infrared spectrometer

作　　者：陈万英[1,2] 唐玉国[1] 巴音贺希格[1] 崔继承[1] 冯树龙[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院研究生院,北京100039

出　　处：《中国光学与应用光学》2010年第3期263-267,共5页Chinese Optics and Applied Optics Abstracts

基　　金："十一五"国家科技支撑计划重大项目(No.2006BAK03A02);国家创新方法工作专项项目(No.2008IM040700);国家重大科研装备研制项目(No.ZBYZ2008-1);中国科学院重大科研装备研制项目(No.YZ200804);吉林省科技发展计划项目(No.20070523;No.20086013);长春市应用技术研究计划项目(No.08Y307)

摘　　要：设计和研制了结构紧凑、杂散光低的微型平像场近红外光谱仪。在分光系统设计中不采用附加杂散光遮挡装置的常规方法,而是在准直物镜前设置一块直径为8.5 mm的平面反射镜,通过调节平面反射镜改变入射光束的空间角,使光束全部被准直镜接收,不再产生旁光,从而有效地消除系统内的杂散光,使仪器整体杂散光水平降低了1.13%。另外,该光谱仪选择线阵CCD作为探测器件,不再设置冷却系统也避免了平面光栅带有扫描旋转机构。由于使用CCD作探测器和新的消杂散光设计方法,该光谱仪实现了微型化。A micro flat-field near-infrared spectrometer with simple structures and lower stray light was designed and developed. By comparing with the conventional method in which a additional installment was taken as a dispersion system to suppress the stray light, this method installed a plane mirror with a diameter of 8.5 mm in front of the collimation mirror to control the incident light. By adjusting the mirror, the angle of the incident light was changed and the light could be received by the collimation mirror totally without bypass light. Using this method, the stray light of the system has been reduced approximately by 1. 13%. Furthermore, a linear array CCD detector was chosen as a receiving component to avoid the cooling system and scanning rotary mechanism of plane grating. By using the CCD detector and new stray light suppressing method, the flat-field near-infrared spectrometer has been microminiaturized.

关 键 词：微型平像场 近红外光谱仪 消杂散光设计 

分 类 号：TH744.1[机械工程—光学工程]