讨论了红外光纤传像束的学术意义和制备工艺，制备了一种硫系玻璃红外光纤传像束并进行了专门的性能测试。选用As40S58Se2、As40S60作为芯棒和皮管玻璃组分，采用管棒法拉制成纤，利用人机结合的排丝工艺制备出了单丝直径为50 μm，纤芯直径为40 μm，576元正方形排列的红外光纤传像束。搭建了相应的实验测试平台， 对光纤束排列规则度、断丝率、光学效率及传像束引起系统调制传递函数（MTF）下降量等指标进行了测试。测试表明，传像束断丝率为2.7%，衰减损耗低于0.5 dB/m，光学效率约为31%，在红外光纤传像系统中光纤传像束引起的MTF下降量小于10%。最后，利用研制的红外传像束完成了红外成像实验，结果表明，红外光纤传像束能够实现良好的红外成像。

利用口径150mm、视场±0.17°、接收波长974 nm的光学天线望远系统原理样机，搭建了试验装置并进行了实测，测量结果显示光学天线在0.35°附近及1°附近出现了两个原路回波杂光峰值.通过对两个杂光峰值的仿真分析，提出了在主镜内部增加二次斜光阑及临时挡光环的措施，消除望远系统前向散射杂光.通过分析主次镜焦距分配对光学天线望远系统杂光的影响，指出在设计中缩小主镜焦距可降低系统原路回波杂光，这对光学天线消回波杂光设计具有指导意义.

针对推扫式红外遥感成像技术在高分辨对地观测领域的重要地位, 结合我国红外遥感技术发展现状和长线阵红外探测器技术水平, 研究了利用线面转换的异型红外光纤传像束线阵端实现推扫, 面阵端与成熟的小面阵红外探测器耦合以获得高分辨红外遥感图像的光纤传像系统.分析了该红外光纤传像系统前置物镜和耦接镜设计中的主要问题, 并针对一种入射端为4 000×6元线阵, 出射端为160×150元面阵的红外光纤传像束设计了前置物镜系统和后继耦接镜系统.引入平均传递函数的方法对整体光学系统的MTF进行了模拟评价, 模拟结果显示整体光学系统成像良好, 两系统的成像性能皆达到衍射极限, 满足光纤传像系统的特殊要求, 可为该类光纤传像系统的设计提供参考.

To ameliorate the disadvantages of imaging system coupled with imaging fiber bundle, a method by adding square aperture microlens arrays at both entrance and exit ends of the imaging fiber bundle is proposed to increase the system’s coupling efficiency. The expressions for solving the parameters of both ends’ microlens units are deducted particularly. The microlens arrays used for an infrared imaging fiber bundle with the single fiber diameter of 100 μm and core diameter of 70 μm are designed by this method. The simulation results show that compared with the system without microlens arrays, the fill factor of the imaging fiber bundle coupled microlens arrays system is increased from 44.4% to more than 90%, and the coupling efficiency is doubled too. So the design method is correct, and the introduction of microlens arrays into imaging fiber bundle coupled system is feasible and superior.

A novel element for collimating LED light is designed based on non-imaging optics. It is composed of a refraction lens and a reflector. The upper surface of the lens is freeform and calculated by geometrical optics and iterative process. The lens makes the rays in the range of 0°-45° from the optical axis collimated. The rays in the range of 45°-90° from the optical axis are collimated by the reflector. The inner surface of the reflector is parabolic with its focus located in the LED chip. The designed element is applicable to LED source of any emitting type. For a certain application, the simulation results of the designed element in Tracepro show that it has a very compact structure and good collimating performance. Just investigating the loss in the lens surfaces, this element has high light output efficiency of nearly 99%. Most lighting area radii are no more than 20 mm when the illuminated plane is 5 m away from the LED source.