CUSTOMIZED
Material: UVFS (Corning 7980 0F)
Diameter: 25.4 mm +0/-0.1 mm
Thickness: 6.35 mm +/-0.1 mm
Clear Aperture: min 20 mm
Surface Quality, S1: 20-10 S-D per CA as per MIL
Surface Quality, S2: 20-10 S-D per CA as per MIL
Surface Flatness, S1: <λ/8 @633 nm over any 20 mm dia within CA
Parallelism: 10 arcsec
Protective chamfers: 0.1-0.4 mm x 45°
Chips: 0.2 mm
Coatings (IBS):
S1: HRa>99.5% @ 355 nm, AOI=45 deg
S2: uncoated
