Ultra–Thin Windows - Windows & Mirrors - BTMT | Beijing Trans Manufacture and Trade Co., Ltd.

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Ultra–Thin Windows

Ultra-thin windows have been used more and more in many applications. But these components are too difficult to be manufactured because the components' thickness is quite smaller than its dimension. BTMT can make the parts at the ratio from 10:1 to 40:1. The flatness of λ/4 and the transmission wavefront distortion of λ/8 are available in BTMT.

Specifications

Material
Crown, Flint, UVFS
Surface Flatness
λ/4@632.8nm
Transmission wavefront distortion
See table@632.8nm
Wedge
<1 arcmin
Surface Quality
20/10 on both sides
Dimension Tolerance
±0.1mm
Thickness Tolerance
±0.1mm
Clear Aperture
>90% of central diameter
Coating
Optional
Bevel
0.2mmx45°

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