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Name:Sight WIndow-Vacuum Viewport Window
Dimension:From 1 mm (.039”) to 305 mm (12”) in any optical axis
Thickness:From 0.2mm up to 20mm
Flatness:Varies by thickness but can be λ/10 @633nm or better
Parallelism:Varies by size but can be as tight as 1 arc second
Surface Quality:S/D 80/60~20/10 per MIL-PRT-13830
Quantity:Quantities from singles to full large scale production runs
Materials:Bk7, Fused Silica, Quartz, and Optical Glass
Delivery time:Usually 4 weeks after deposit received

Product Description

1.Main Types

Round windowSquare windowFlat window with holesCustomized shape


Full reflection, Half reflection, AR, Bandpass, Cutoff.


  Tooling Tolerance(Length,Wideth,Hight): ±0.001mm

  Surface Quality: S/D 60/40(best 10/5)

  Size: Customized

  Surface Flatness: Best λ/10 @633nm

  Parallelism: Best 2”

Min&Max sizes: Dia 5mm~Dia 300mm, Thickness 0.1mm~10mm

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