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围绕环境温度对光学系统性能的影响及其解决方法,分析了温度效应的三个方面的因素:光学元件的折射率、曲率半径和中心厚度以及光学元件之间的空气间隔,并讨论了这三个因素与温度变化之间的关系。提出使用无热设计来消除温度效应对光学系统的影响,并且比较了当前三种无热技术之间的优缺点。最后给出了一个红外光学系统作为例子予以分析,在设计过程中使用了机械主动式无热技术,以补偿温度变化所产生的影响,通过比较使用无热设计前后系统的成像质量,说明了无热设计可以消除光学系统中温度效应的影响,使系统在较大的温度范围内保持较好的成像质量。
Focusing on the influence of ambient temperature on the performance of the optical system and its solution, three factors of temperature effect are analyzed: the refractive index, the radius of curvature and the center thickness of the optical element and the air gap between the optical elements, and the three The relationship between the factors and temperature changes. The non-thermal design was proposed to eliminate the effects of temperature effects on the optical system and to compare the advantages and disadvantages of the three current nonthermal technologies. Finally, an infrared optical system is given as an example to analyze. In the design process, a mechanical active non-thermal technology is used to compensate for the influence of temperature changes. By comparing the imaging quality of the system without using thermal design, Thermal design eliminates the effects of temperature effects in the optical system and allows the system to maintain good image quality over a wide temperature range.