FLE 671-28
产品规格：
| Optical Specifications | |
| Center Wavelength [nm] | 671 |
| Pass Band Level [%] | 92 (average) |
| Pass Band [nm] | 28 |
| Angle of Incidence [degrees] | 0 +/- 2 |
| Blocking Level [OD] | 6 (average) |
| Blocking Range [nm] | 350-1000 |
| Physical Specifications | |
| Outer Diameter [mm] | 25 |
| Clear Aperture [mm] | 20 |
| Filter thickness [mm] | 5 |
| Ring mounted | yes |
| Scratch / Dig | 60 / 40 |
| Reliability | |
| Environmental Testing | MIL-STD-810F |
| Mechanical Durability | MIL-STD-48497A |
