◆ Features
A wavelength (color) separation filter that transmits light on the long-wavelength side while blocking light on the short-wavelength side.
This is a high-performance filter: in the non-transmission wavebands, its light-blocking performance reaches OD5; meanwhile, in the transmission wavebands, its transmittance exceeds 90%.
Comprehensive Performance: It combines the advantages of absorptive filters (excellent stability and angle-insensitivity) and interference film filters (high transmittance for specific wavelengths).
◆ Common Specifications
Material | si |
Coating | Beam Splitter Coating |
Passband Transmittance | >85% |
Surface Quality | 60/40 |
Cut-Off Wavelength | 1600nm |
◆ Applications
Laser Detection Systems
Infrared Imagers
Military Optical Equipment
Biomedical Instruments
Mechanical Mounting: Use dedicated filter mounts, ensuring clamping force is evenly applied to the chamfered edges.
Mounting Direction: Note the direction of the filter's coated surface (it typically faces the light source or detectors).
Cleaning Protocol: Avoid organic solvents. Use dry, clean compressed air or nitrogen gas for gentle blowing.
Coating Maintenance: Avoid mechanical contact or friction on the coated surface.
Packaging and Storage: Each filter should be individually packaged to prevent abrasion and stored in a dry, clean environment.
Material | Si | Diameter | Φ10mm |
Diameter Tolerance | -0.1/0mm | Thickness | 2mm |
Thickness Tolerance | ±0.1mm | Coating | Beam Splitter Coating |
Transmittance | T>85%@1650-2500nm T<2%@400-1600nm | Surface Quality | 60/40 |
Cut-Off Wavelength | 1600nm | Passband Transmittance | >85% |
Cut-Off Region Transmittance | <2% | OD (Cut-off Band) | OD≥1.7 |
Longpass Filters
