Compute the blue-light (415–455 nm) transmittance of tinted or coated spectacle lenses from spectral data.
Compute the blue-light (415–455 nm) transmittance of tinted or coated spectacle lenses from spectral data.
| 波段(nm) | 分类 | 建议透射比 | 说明 |
|---|---|---|---|
| 380-415 | 紫光 | <10% | 能量高,应阻隔 |
| 415-455 | 有害蓝光 | <40% | 视网膜色素上皮损伤风险 |
| 455-465 | 过渡区 | 40-70% | 兼顾防护与色觉 |
| 465-495 | 有益蓝光 | >80% | 调节昼夜节律,应保留 |
| 495-500 | 青光 | >90% | 正常可见光 |
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Transmittance | tau = Phi_t / Phi_i, the ratio of transmitted to incident luminous flux | ISO 13666:2019, Ophthalmic optics - Vocabulary |
| Lens transmittance specification | Transmittance requirements and test methods for finished lenses follow the lens standard | ISO 8980-3:2013, Uncut finished spectacle lenses - Part 3: Transmittance specifications and test methods |
| Blue-light hazard weighting | Effective radiance L_B = sum L_lambda · B(lambda) · delta_lambda, with B(lambda) the blue-light hazard function | IEC 62471:2006, Photobiological safety of lamps and lamp systems |
| Risk groups | Sources are grouped as exempt, low risk, moderate risk and high risk | IEC 62471:2006, Photobiological safety of lamps and lamp systems |
根据截止波长与滤光陡度,估算蓝光各波段透射比、有害蓝光阻隔率与有益蓝光保留率。
防蓝光截止波长透射比计算器,根据截止波长计算蓝光各波段透射比与有害蓝光阻隔率。。医疗专业工具,基于权威医学标准,仅供参考。
工作与生活中的相关计算与查询。
防蓝光透射比=透过的蓝光比例;比率越低阻断越多。普通镜片约透 90%+,防蓝光镜片可降至 60–80%(按波段与标准不同)。
评估屏幕/眼镜蓝光削减程度;过度削减会偏色、影响色彩工作。
不同标准(如 ISO 过滤波段)口径不一;非医疗防护,护眼仍以用眼时长与休息为主。