Design anti-reflection or reflective coating stacks from target wavelengths.
计算四分之一波长减反膜厚度,推荐减反膜/硬膜/防水膜层系组合方案
| 膜系 | 层数 | 反射率 | 特点 |
|---|---|---|---|
| 单层MgF₂ | 1 | ~1.5% | 简单经济,单波长减反 |
| 双层V型 | 2 | ~0.5% | 单波长近零反射 |
| 多层宽带(宽带AR) | 4-8 | ~0.3% | 可见光全波段低反射 |
| 硬膜(石英) | 1-3 | — | 提升耐磨损,邵氏硬度高 |
| 防水/防油膜 | 1 | — | 疏水疏油,接触角>110° |
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Quarter-wave thickness | d = lambda_0 / ( 4 · n ), where lambda_0 is the design wavelength | Macleod HA, Thin-Film Optical Filters (4th ed.), CRC Press |
| Ideal index for a single AR layer | n = sqrt( n_0 · n_s ), with n_0 the incident medium and n_s the substrate | Macleod HA, Thin-Film Optical Filters (4th ed.) |
| Interface reflectance | At normal incidence R = ( (n_0 - n_s)/(n_0 + n_s) )^2 | Fresnel reflection formulas; Macleod HA, Thin-Film Optical Filters (4th ed.) |
| Multilayer stacks | Alternating high and low index quarter-wave layers broaden the anti-reflection band | Macleod HA, Thin-Film Optical Filters (4th ed.) |
计算减反膜四分之一波长厚度,评估膜层折射率匹配,推荐镀膜层系组合方案。
镀膜减反射硬膜设计器,计算四分之一波长减反膜厚度,推荐镀膜层系组合方案。。医疗专业工具,基于权威医学标准,仅供参考。