Compute spherical aberration of an aspheric surface from curvature and conic constant.
非球面相对球面像差的修正项:球面贡献为 (n−1)h²/(2nR),再乘以 (1+k/n²);k=0 退化为球面,k=−n² 为最佳补偿。
纵轴 = 相对口径 (hᵢ/h),横轴 = 横向像差 TRA (μm),蓝色为球面(K=0),橙色为当前锥面(K)
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Aberration versus aperture | Third-order longitudinal spherical aberration scales with the square of the semi-aperture | Jenkins FA, White HE, Fundamentals of Optics (4th ed.), McGraw-Hill |
| Wavefront aberration | Primary spherical aberration in wavefront terms scales with the fourth power of aperture | Malacara D, Optical Shop Testing (3rd ed.), Wiley |
| Best focus | The circle of least confusion lies between the marginal and paraxial foci | Jenkins FA, White HE, Fundamentals of Optics (4th ed.) |
| Choice of the conic constant | Choose K so that marginal and paraxial rays share a common focus | ISO 10110-12:2019, Optics and photonics - Aspheric surfaces |
输入折射率、曲率半径、通光半口径与锥面常数,计算单折射面的三级纵向球差、最佳锥面常数、边缘矢高及非球面偏离量,并展示不同口径位置的矢高表与横向像差曲线。