二向色镜是一种专用的镜片，能反射某种颜色的光，而透过其他颜色的光。分色镜具有一定的光谱透过特性。 当以45、0度入射或大角度入射时，从光源中分离出特定的光谱，并改变部分光谱光路放方向。其作用旨在将光源发出的白光分成三色。常用于激光灯，舞台电脑灯，遥头灯，色轮，二向色滤镜，酶标仪器，荧光显微镜系统，投影光引擎系统激光灯，光学仪器分束，视频眼镜等传感器系统中。
| 料 | H-K9L, 紫外融石英 |
| 尺寸公差 | 0/-0.2mm |
| 厚度公差 | ±0.2mm |
| 光洁度 | 60/40 |
| 通光孔径 | >90% |
| 面型 | <λ/8@632.8nm |
| 平行度 | <1 arc minute |
| 倒角 | 保护性<0.5mmx45° |
| 镀膜 | 一面镀二向色性分色膜，反面镀增透膜 |
| 损伤阈值 | >5J/cm2,20ns,20Hz,@1064nm |
| 型号 | 材料 | 直径 (mm) | 厚度 (mm) | 反射 | 透射 | 入射角 (°) |
| FMIRD12.7T3R400T800-0 | BK7 | 12.7 | 3 | R>99.5%@400nm | T>95%@800nm | 0 |
| FMIRD12.7T3R400T800-45 | BK7 | 12.7 | 3 | R>99.5%@400nm | T>90%@800nm | 45 |
| FMIRD12.7T3R1064T808-0 | BK7 | 12.7 | 3 | R>99.5%@1064nm | T>95%@808nm | 0 |
| FMIRD12.7T3R1064T532-0 | BK7 | 12.7 | 3 | R>99.5%@1064nm | T>95%@532nm | 0 |
| FMIRD12.7T3R1064T532-45 | BK7 | 12.7 | 3 | R>99.5%@1064nm | T>90%@532nm | 45 |
| FMIRD12.7T3R532T1064-0 | BK7 | 12.7 | 3 | R>99.5%@532nm | T>95%@1064nm | 0 |
| FMIRD12.7T3R532T1064-45 | BK7 | 12.7 | 3 | R>99.5%@532nm | T>90%@1064nm | 45 |
| FMIRD20T5R400T800-0 | BK7 | 20 | 5 | R>99.5%@400nm | T>95%@800nm | 0 |
| FMIRD20T5R400T800-45 | BK7 | 20 | 5 | R>99.5%@400nm | T>90%@800nm | 45 |
| FMIRD20T5R1064T808-0 | BK7 | 20 | 5 | R>99.5%@1064nm | T>95%@808nm | 0 |
| FMIRD20T5R1064T532-0 | BK7 | 20 | 5 | R>99.5%@1064nm | T>95%@532nm | 0 |
| FMIRD20T5R1064T532-45 | BK7 | 20 | 5 | R>99.5%@1064nm | T>90%@532nm | 45 |
| FMIRD20T5R532T1064-0 | BK7 | 20 | 5 | R>99.5%@532nm | T>95%@1064nm | 0 |
| FMIRD20T5R532T1064-45 | BK7 | 20 | 5 | R>99.5%@532nm | T>90%@1064nm | 45 |
| FMIRD25.4T6.35R400T800-0 | BK7 | 25.4 | 6.35 | R>99.5%@400nm | T>95%@800nm | 0 |
| FMIRD25.4T6.35R400T800-45 | BK7 | 25.4 | 6.35 | R>99.5%@400nm | T>90%@800nm | 45 |
| FMIRD25.4T6.35R1064T808-0 | BK7 | 25.4 | 6.35 | R>99.5%@1064nm | T>95%@808nm | 0 |
| FMIRD25.4T6.35R1064T532-0 | BK7 | 25.4 | 6.35 | R>99.5%@1064nm | T>95%@532nm | 0 |
| FMIRD25.4T6.35R1064T532-45 | BK7 | 25.4 | 6.35 | R>99.5%@1064nm | T>90%@532nm | 45 |
| FMIRD25.4T6.35R532T1064-0 | BK7 | 25.4 | 6.35 | R>99.5%@532nm | T>95%@1064nm | 0 |
| FMIRD25.4T6.35R532T1064-45 | BK7 | 25.4 | 6.35 | R>99.5%@532nm | T>90%@1064nm | 45 |
