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

本文研究高屈光度镜消除离轴像散的非球面化模式。

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面的实际可范围。

Concentric spheres are parallel.

同心球面是平行的。

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球锥过环壳的球面舱壁的结构组成、受力工况、强度与稳定要求,有限元方法各参数进行了强度优化与稳定优化。

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.

本文证明了球面有限点集的伪可以完全由其特征多项式的根来刻画，并得到了在度量加运算下伪具有封闭.