409 DM
Iridian 提供的偏振无关二色分光镜具有陡边、非常高而平的反射及传输频带，从而增强了其荧光套件的性能，可以用于要求光束分离和波长分隔的其他用途。
产品规格：
| Optical Specification | ||
| Passband WL Range [nm]: | 415 - 570 | |
| Passband Level [%, average]: | 90 | |
| Reflect Band WL Range [nm]: | 327 - 404 | |
| Reflect Band Level [%, average]: | 90 | |
| AOI Range [degrees]: | 43.5 - 46.5 | |
| Cone Half Angle [degrees]: | 2 | |
| Physical Specification | ||
| Length [mm]: | 25.2 +/- 0.1 | |
| Width [mm]: | 35.6 +/- 0.1 | |
| Filter Thickness [mm]: | 1.05 +/- 0.05 | |
| Min. Clear Aperture [mm]: | 80% Elliptical | |
| Flatness [nm]: | 1266 | |
| Parallelism [arcsec]: | 180 | |
| Surface Quality [S/D]: | 60/40 |
