Sharma K D
Appl Opt. 1979 Dec 1;18(23):3933-7. doi: 10.1364/AO.18.003933.
A new Cooke triplet derivative of a five-element configuration is proposed, in which both the front and the rear lenses of the triplet are split into two separated positive lenses. The designs of this new lens and the conventional Pentac lens have been developed for use as a 35-mm camera lens under identical conditions. The performance of the two lens systems is compared, and it is found that the aberrations of the new lens system are better corrected.
提出了一种新的五元件结构的库克三片式镜头衍生物，其中三片式镜头的前透镜和后透镜均被拆分为两个分离的正透镜。在相同条件下，已开发出这种新镜头和传统潘太康镜头的设计，用作35毫米相机镜头。比较了这两种镜头系统的性能，发现新镜头系统的像差得到了更好的校正。
