Graticules
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Chrome Coated Precision Slits Plate
Material：B270i
Process：Double Surfaces Polished，
One surface chrome coated，Double surfaces AR coating
Surface Quality：20-10 in pattern area
40-20 in outer area
No pinholes in chrome coating
Parallelism：<30″
Chamfer：<0.3*45°
Chrome coating：T<0.5%@420-680nm
Lines are transparent
Line thickness：0.005mm
Line length：8mm ±0.002
Line Gap：0.1mm ±0.002
Double surface AR: T>99%@600-650nm
Application: LED pattern projectors
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Precision optical slit – Chrome on Glass
Substrate: B270
Dimensional Tolerance: -0.1mm
Thickness Tolerance: ±0.05mm
Surface Flatness:3(1)@632.8nm
Surface Quality: 40/20
Line Width: 0.1mm & 0.05mm
Edges: Ground , 0.3mm max. Full width bevel
Clear Aperture: 90%
Parallelism:<5”
Coating: High optical density opaque chrome,Tabs<0.01%@Visible Wavelength -
Stage micrometers calibration scales grids
Substrate: B270
Dimensional Tolerance: -0.1mm
Thickness Tolerance: ±0.05mm
Surface Flatness:3(1)@632.8nm
Surface Quality: 40/20
Line Width: 0.1mm & 0.05mm
Edges: Ground , 0.3mm max. Full width bevel
Clear Aperture: 90%
Parallelism:<5”
Coating: High optical density opaque chrome,Tabs<0.01%@Visible Wavelength
Transparent Area, AR: R<0.35%@Visible Wavelength
