Cut-off Filter
It can filter out all long or short wavelength and only keep the range of band which is required.It includes two types, Shortpass Cut-off Filter and Longpass Cut-off Filter.The former can kept long wave and filt out the light which is radiated by all the shortwave, the latter instead.
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Specification
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Material
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K9 or quartz glass
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Diameter Tolerance
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+0/-0.1mm
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Thickness Tolerance
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±0.1mm
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Surface Quality
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40-20
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Parallelism
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<3 arc min
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TECHSPEC
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No.
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Dia(mm)
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Thickness (mm)
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Transmittance Wavelength(T)
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Cut-off wavelength
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Peak Transmittance
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LP300
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25.4
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2.0
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280nm-2500nm(T>80%)
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180nm-200nm
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85%
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LP350
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25.4
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2.0
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330nm-2500nm(T>80%)
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180nm-250nm
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92%
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LP400
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25.4
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2.0
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380nm-2500nm(T>80%)
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180nm-320nm
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92%
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LP500
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25.4
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2.0
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470nm-2500nm(T>80%)
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180nm-430nm
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90%
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LP550
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25.4
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2.0
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525nm-2500nm(T>80%)
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180nm-480nm
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90%
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LP600
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25.4
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2.0
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580nm-2500nm(T>80%)
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180nm-530nm
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90%
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LP650
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25.4
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2.0
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625nm-2500nm(T>80%)
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180nm-580nm
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90%
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LP700
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25.4
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2.0
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650nm-2500nm(T>80%)
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180nm-600nm
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90%
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LP750
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25.4
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2.0
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700nm-2500nm(T>80%)
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180nm-640nm
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90%
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LP800
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25.4
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2.0
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775nm-2500nm(T>80%)
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180nm-740nm
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90%
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LP850
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25.4
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2.0
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825nm-2500nm(T>80%)
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180nm-780nm
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90%
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LP900
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25.4
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2.0
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850nm-2500nm(T>80%)
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180nm-820nm
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90%
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