Quantify spherical-aberration reduction of an aspheric surface versus a spherical one.
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Aspheric surface equation | z = ( y^2 / R ) / ( 1 + sqrt( 1 - (1 + K) · y^2 / R^2 ) ), where K is the conic constant | ISO 10110-12:2019, Optics and photonics - Preparation of drawings for optical elements - Part 12: Aspheric surfaces |
| Meaning of the conic constant | K = 0 sphere; K = -1 paraboloid; K < -1 hyperboloid; -1 < K < 0 prolate ellipsoid | ISO 10110-12:2019, Optics and photonics - Aspheric surfaces |
| Origin of spherical aberration | For a spherical lens the marginal and paraxial foci differ; longitudinal spherical aberration grows with aperture | Jenkins FA, White HE, Fundamentals of Optics (4th ed.), McGraw-Hill |
| Role of asphericity | Reshaping the surface cancels spherical aberration, allowing thinner and lighter lenses | ISO 10110-12:2019, Optics and photonics - Aspheric surfaces |
计算球面镜片的纵向球差与消除球差所需的非球面圆锥常数,辅助非球面镜片设计与教学。
非球面球差矫正计算器,计算镜片球差量、非球面系数(圆锥常数K),辅助非球面镜片设计。。医疗专业工具,基于权威医学标准,仅供参考。