Cut-off glass filter

Red long pass filter


The red long-pass filter “HB series” is a transparent glass filter that has the characteristic of mainly transmitting the red wavelength or more. The following 9 types are available depending on which wavelength is used for transmission.


Model number
thickness (mm)
Wavelength transmittance limit (nm)
data
HB600
2
600 ± 10
HB610
2
610 ± 10
HB630
2
630 ± 10
HB640
2
640 ± 10
HB650
2
650 ± 10
Model number
thickness (mm)
Wavelength transmittance limit (nm)
data
HB670
2
670 ± 10
HB685
2
685 ± 10
HB700
2
700 ± 10
HB720
3
720 ± 10

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