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 Precision Optical WindowsMaterial: BK7,
UV Fused Silica
(CaF2, Si,
Ge, etc. upon request)
Surface quality: 20-10 scratch/dig
Surface figure:  /10
Clear aperture: 90% of the diameter
Diameter tolerance: + 0.0 mm; -0.15 mm
Thickness tolerance:  0.1 mm
Parallelism: 10 arc sec |
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| | Size, mm | Thickness, mm | BK7 / Price, USD | UV Fused Silica / Price, USD |
| | 8 dia. | 3.0 | PW0208 / 14 | PW1208 / 18 |
| 12.5 (12.7) dia. | 3.0 | PW0212 / 14 | PW1212 / 22 |
| 20 dia. | 5.0 | PW0220 / 16 | PW1220 / 27 |
| 25 (25.4) dia. | 6.0 | PW0225 / 18 | PW1225 / 36 |
| 38 (38.1) dia. | 8.0 | PW0238 / 27 | PW1238 / 65 |
| 50 (50.8) dia. | 10.0 | PW0250 / 40 | PW1250 / 98 | | |
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