The Collins formula (1970) contacts the diffract integral of optical system complex with ABCD matrix and provides a mathematics tool for studying laser beams passing through paraxial ABCD optical system.

• 1970年Collins将复杂光学系统的衍射积分与ABCD矩阵元联系起来，推导出了Collins公式，为研究光束通过近轴ABCD光学系统的传输与变换提供了一个有效的工具。