Correct and set the polarization axis angle for polarized sunglasses.
根据镜架前倾角(前倾)与面弯(包覆)计算倾斜诱导的柱镜与有效轴位变化
| 参数 | 标准范围 | 影响 |
|---|---|---|
| 前倾角 Pantoscopic | 8-12° | 过大诱发垂直柱镜、像差增大 |
| 面弯 Wrap | 0-5° | 过大诱发水平柱镜、周边棱镜 |
| 顶点距离 Vertex | 12-14mm | 影响有效度数 |
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Malus law | I = I_0 · cos^2(theta), where theta is the angle between polarization and the transmission axis | Malus EL (1809); Born M, Wolf E, Principles of Optics (7th ed.), Cambridge |
| Crossed polarizers | At theta = 90° the theoretical transmittance is zero, i.e. extinction | Born M, Wolf E, Principles of Optics (7th ed.) |
| Polarizing lens terminology | Axis and transmission axis definitions follow the ophthalmic optics vocabulary | ISO 13666:2019, Ophthalmic optics - Vocabulary |
| Transmittance requirement | Transmittance and classification of polarizing lenses follow the transmittance specification | ISO 8980-3:2013, Uncut finished spectacle lenses - Part 3: Transmittance specifications |
根据镜架前倾角与面弯计算倾斜诱导的柱镜与有效轴位变化,辅助运动眼镜与偏光镜配镜补偿。
偏光镜轴位校正器,根据镜架前倾角与面弯计算倾斜诱导的柱镜与有效轴位变化。。医疗专业工具,基于权威医学标准,仅供参考。