TOWER WINDOWS

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TOWER OPTICALS 社製 Window, Circular, Square, Rectangular

	Windows are used to isolate different physical environments while allowing light to pass. The selection of a window should consider the properties of the different optical materials, transmission, wavelength range, and resistance to the environment.Tower offers a wide range of different materials and a variety of anti-reflecting coatings that can be deposited on the windows.
Tower Optical manufactures windows from BK7, UV Grade Fused Silica and Sapphire. Other materials are available on a custom basis. In addition, we offer three different quality standards as described below. Contact factory for info on Sapphire Windows.
Specification Standard Grade High Grade Laser Grade High Grade Material BK7 grade A BK7 grade A UV Fused Silica Sapphire Dimensional Tolerance +0.0/-0.1mm +0.0/-0.1mm +0.0/-0.1mm ±0.1mm Flatness (TWF) λ/2 @ 632.8nm λ/10 @ 632.8nm λ/10 @ 632.8nm λ/4 per 25.4mm Surface Quality Scratch/Dig 40/20 20/10 20/10 40/20 Thickness Tolerance ±0.2mm ±0.2mm ±0.2mm ±0.1mm Parallelism < 1 arc minute < 10 arc seconds < 10 arc seconds < 30 arc seconds Bevel 0.2mm x 45° 0.2mm x 45° 0.2mm x 45° - BK7 Grade A Optical Glass, Stadard WB11 and High WB12 Model No Dia mm Thick Model No Dia mm Thick WB11-005 5.0 2.0 WB12-005 5.0 2.0 WB11-010 10.0 2.0 WB12-010 10.0 2.0 WB11-012 12.5 2.0 WB12-012 12.5 6.0 WB11-020 20.0 2.0 WB12-020 20.0 6.0 WB11-025 25.0 2.0 WB12-025 25.0 6.0 WB11-038 38.0 4.0 WB12-038 38.0 10.0 WB11-050 50.0 4.0 WB12-050 50.0 10.0 UV Grade Fused Silica, High WB22 Model No Dia mm Thick WF22-005 5.0 2.0 WF22-010 10.0 2.0 WF22-012 12.5 6.0 WF22-020 20.0 6.0 WF22-025 25.0 6.0 WF22-038 38.0 10.0 WF22-050 50.0 10.0