Parallel Windows Jan 21, 2008

Windows are used to allow optical radiation to pass from one environment to another without allowing other components of these environments to mix.Considerations in selecting windows may include transmission,scattering,wavefront distortion and resistance to certain environments.We offer windows manufactured from the best quality BK7( or K9 with the same property),The windows are designed to be used in precision optical systems.The optical transmission is high with little distortion of transmitted signal.Diameter up to 300 mm and thickness up to 12 mm is available upon request.

Providing good parallelism for the both sides of polished windows, slightly wave difference after transmission and its good surface flatness also ensures slightly interfere before transmission.

Diameter(mm) Thickness(mm) Surface Figure(λ=632.8nm) Surface
Quality
12.7 3 λ/10 20/10
25.4 3 λ/10 20/10
50.8 6 λ/10 20/10
100 12 λ/10 20/10
200 15 λ/10 20/10
300 20 λ/10 20/10

SPECIFICATIONS:

Material BK7, Fused Silica , Zerodur
Diameter Tolerance +0.0/-0.1~+0.0/-0.3 mm
Thickness Tolerance ±0.05~ ±0.1mm
Clear Aperture >90% Diameter
Wedge <30 Seconds
Bevel 0.2 mm x45º

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