Pal Sourav, Hazra Lakshminarayan
Department of Applied Optics and Photonics, University of Calcutta, Kolkata, India.
Appl Opt. 2013 Aug 10;52(23):5611-8. doi: 10.1364/AO.52.005611.
A procedure for thin lens structural design of a new class of pupil stabilized zoom systems is presented. This is facilitated by an implementation of evolutionary programming that searches a multivariate hyperspace formed by design variables, namely, powers of individual components and intercomponent separations. Two coupled components in the lens system act as the variator for the zoom system, and another component in the system acts as the compensator. A fixed axial location of the image plane is achieved by moving the coupled variator and the compensator nonlinearly, while the entrance and the exit pupils are allowed small shifts in their axial locations over the zooming range. The latter relaxation opens up the possibility for effective two-conjugate zoom systems with only two independent component movements. Illustrative examples for thin lens structures of two-conjugate zoom systems are presented.
提出了一种新型光瞳稳定变焦系统的薄透镜结构设计方法。通过实施进化规划来实现这一目标，该规划搜索由设计变量形成的多元超空间，这些设计变量即各个组件的光焦度和组件间的间隔。透镜系统中的两个耦合组件充当变焦系统的变倍器，系统中的另一个组件充当补偿器。通过非线性移动耦合变倍器和补偿器，可实现像平面在轴向上的固定位置，同时在变焦范围内允许入瞳和出瞳在其轴向位置上有小的偏移。后一种放宽条件为仅通过两个独立组件移动的有效双共轭变焦系统开辟了可能性。给出了双共轭变焦系统薄透镜结构的示例。
