In this paper, model of aspherisation for higher-dioptry spectacle lens is investigated.

本文研究高屈光眼用透镜消除离轴像散的非球化模式。

The convex aspheric surface has self-aplanatic capability.The range that can be utilized in practice was studied.

分析了自消球差方法检验凸二次非球的实际可用范围。

Concentric spheres are parallel.

同心球行的。

In the article we analyse the structure compose,the endure force status,the request of strength and stability on the domed bulkhead with nonaxisymmetry sphere-conical transitional annulated shell.

系统分析了带有非轴对称球锥过环壳的球舱壁的结构组成、受力工况、稳定性要求,用有限元方法对各参数进行了优化稳定性优化。

In this paper, we show that the Pseudo-Symmetric property of spherical point set can be characterized by the eigen values of eigenpolynomial and it has the closeness under the metric sum operation.

本文证明了球有限点集的伪对称性可以完全由其特征多项式的根来刻画，并得到了在量加运算下伪对称性具有封闭性.