论文部分内容阅读
本文回顾了红外热成象技术中并联扫描体制和串联扫描体制的发展及其优缺点,认为串并扫描体制是光机扫描热成象当前的发展方向。根据目前国内探测器的发展水平,提出了两种能够达到或接近电视扫描制式的方案,并就设计原理和可行性作了具体分析。第一种方案是从串扫为主,光学系统选用折反式混合系统。行转鼓采用反射式金属镜或玻璃镜,场转鼓和其它透镜组都选用锗或硅单晶。场镜鼓选取六面棱镜,而行镜鼓选取十二面反射棱镜,场镜鼓配置在前,行镜鼓配置在后。这样既可以得到较大的垂直视场并增加行扫描线,又可以减小行镜鼓的尺寸即减小风阻,以减小系统功耗。如果行镜鼓和外转子电机组装成一体进行高精度动平衡,就可以实现更高转速、高稳定性、低振动、低噪声和低功耗的要求。
This paper reviews the development and advantages and disadvantages of parallel scanning system and tandem scanning system in infrared thermography, and thinks that the tandem scanning system is the current development direction of optical scanning thermal imaging. According to the current development level of detectors in our country, two schemes that can reach or approach the TV scanning standard are put forward. The principle and feasibility of the design are analyzed concretely. The first program is mainly from the string scan, the optical system used folding hybrid system. Row drum using reflective metal mirror or glass mirror, field drum and other lens groups are selected germanium or silicon single crystal. Field mirror selection of six-sided prism prism, and the line mirror selection of 12 side of the prism prism, field mirror configuration in front of the mirror, line mirror configuration in the rear. This can not only get a larger vertical field of view and increase the line scan lines, but also can reduce the size of the line of the mirror drum to reduce wind resistance, in order to reduce system power consumption. High-speed balancing, high stability, low vibration, low noise and low power consumption can be achieved if the line drum and the outer rotor motor are integrated into one high-precision dynamic balance.