Long-pass Interference Filters, COWL 450 nm

Diameter: 25.0 +0/-.025 mm diameter
Thickness: 1.5 ± 0.5 mm
Min. clear aperture: 21.0 mm
Transmission: >80% average withinspecified range
Attenuation: >99% average within specified range
Angle of incidence: 0° ± 5°
Substrate material: Fused Silica
Coating material: Refractory oxide
Surface quality: 80/50 per Mil-O-13830B
Coating quality: 40/20 per Mil-O-13830B
Wedge: <3 arc minutes
Wavefront distortion: ≤1 wave per inch
Humidity resistance: Per Mil-C-675A
Abrasion resistance: Per Mil-C-675A
Optimum temp: 23˚C
Temperature limits: -50˚C to 100˚C
Certification: Spectrophotometer print of lot sample
Cleaning: Non-abrasive method, isopropyl alcohol on lens tissue recommended
Laser Damage Threshold:
        CW: 1 W/cm2
        Pulsed: 1 J/cm2