Cut-off Filter

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.

Specification

Material
K9 or quartz glass

Diameter Tolerance
+0/-0.1mm

Thickness Tolerance
±0.1mm

Surface Quality
40-20

Parallelism
<3 arc min

TECHSPEC

No.
Dia(mm)
Thickness (mm)
Transmittance Wavelength(T)
Cut-off wavelength
Peak Transmittance

LP300
25.4
2.0
280nm-2500nm(T>80%)
180nm-200nm
85%

LP350
25.4
2.0
330nm-2500nm(T>80%)
180nm-250nm
92%

LP400
25.4
2.0
380nm-2500nm(T>80%)
180nm-320nm
92%

LP500
25.4
2.0
470nm-2500nm(T>80%)
180nm-430nm
90%

LP550
25.4
2.0
525nm-2500nm(T>80%)
180nm-480nm
90%

LP600
25.4
2.0
580nm-2500nm(T>80%)
180nm-530nm
90%

LP650
25.4
2.0
625nm-2500nm(T>80%)
180nm-580nm
90%

LP700
25.4
2.0
650nm-2500nm(T>80%)
180nm-600nm
90%

LP750
25.4
2.0
700nm-2500nm(T>80%)
180nm-640nm
90%

LP800
25.4
2.0
775nm-2500nm(T>80%)
180nm-740nm
90%

LP850
25.4
2.0
825nm-2500nm(T>80%)
180nm-780nm
90%

LP900
25.4
2.0
850nm-2500nm(T>80%)
180nm-820nm
90%