Chang Yu-Shan, Hsu Long, Huang Kuang-Lung
Appl Opt. 2018 Jul 1;57(19):5514-5522. doi: 10.1364/AO.57.005514.
When UV-curable material is used with a spherical glass lens, it is classified as a hybrid lens and can provide a new degree of freedom in designing a lens system. This method is used to explore the optical limitation of an ultrawide-angle imaging system of a folded structure, which is utilized to achieve a compact volume. The f-number and field of view of the system are 2.0 and 190°, respectively. Diffraction-limited performance is achieved within a field of view of 80° with Strehl ratios greater than approximately 80%. Even at the maximum field of view of 190°, the Strehl ratio is nearly 75%. The lens configuration is NNPNN, where N and P denote negative and positive optical power, respectively; this configuration uses only two aspherical hybrid lens surfaces. Comparisons of different optimizations are also provided.
当将可紫外线固化材料与球面玻璃透镜一起使用时，它被归类为混合透镜，并且可以在设计透镜系统时提供新的自由度。此方法用于探索折叠结构的超广角成像系统的光学限制，该系统用于实现紧凑的体积。该系统的f数和视场分别为2.0和190°。在80°的视场内实现了衍射极限性能，斯特列尔比大于约80%。即使在190°的最大视场下，斯特列尔比也接近75%。透镜配置为NNPNN，其中N和P分别表示负光焦度和正光焦度；此配置仅使用两个非球面混合透镜表面。还提供了不同优化的比较。
