Substrate material

UV Grade Fused Silica or BK7

Diameter

25.0 +0~-.025 mm

Thickness

3 ± 0.5 mm

Min. clear aperture

>85% of diameter

Transmission

>90% average within specified range

Attenuation

>99% average within specified range

Angle of incidence

0° ± 5°

Coating Technology

Electron beam evaporation, dielectric multilayers

Surface quality

20/10 per MIL-O-13830B

Coating quality

40/20 per MIL-O-13830B

Wedge

<3 minutes

Wavefront distortion

≤1 λ @ 633nm per 25mm

Humidity resistance

Per MIL-C-675A

Abrasion resistance

Per MIL-C-675A

Optimum temperature

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 Induced Damage Threshold(LIDT)

>10J/cm2 (1.06μm, 1ns)

40-0001

450

305-425

450 ±10

475-530

40-0006

500

340-475

500 ±10

525-600

40-0011

550

375-520

550 ±10

575-650

40-0016

600

400-565

600 ±10

630-720

40-0021

650

400-615

650 ±10

680-760

40-0026

700

400-660

700 ±10

735-835

40-0031

750

400-710

750 ±10

790-885

40-0036

800

400-755

800 ±10

840-940

40-0041

850

400-805

850 ±10

895-1000

40-0047

900

400-850

900 ±10

945-1060

40-0052

950

400-900

950 ±10

1000-1125

40-0057

1000

400-945

1000 ±10

1050-1180