Wang Wei, Zhong Xing, Liu Jiang, Wang Xiaoheng
Appl Opt. 2019 Feb 1;58(4):892-903. doi: 10.1364/AO.58.000892.
Chromatic aberration is an important artifact that influences image quality. Thus, it should be optimized during lens design. However, the typical combination and selection method of glass materials for the visible band can hardly satisfy the apochromatic requirements of short-wave infrared (SWIR) lenses. Therefore, we propose a method of glass selection for apochromatic lens design in the SWIR band through vector operation based on the Buchdahl model and third-order aberration theory. The proposed method overcomes limitations of traditional methods and unstable calculation results of special material properties. A design example is presented, which indicates that the proposed method can correct the secondary spectrum in the SWIR band and simplify the design using ordinary mass-produced glasses.
色差是影响图像质量的重要伪像。因此，在透镜设计过程中应进行优化。然而，可见光波段玻璃材料的典型组合和选择方法很难满足短波红外（SWIR）透镜的复消色差要求。因此，我们基于布赫达尔模型和三阶像差理论，提出了一种通过矢量运算进行SWIR波段复消色差透镜设计的玻璃选择方法。该方法克服了传统方法的局限性以及特殊材料特性计算结果不稳定的问题。给出了一个设计实例，表明该方法可以校正SWIR波段的二级光谱，并使用普通量产玻璃简化设计。
