Color Filter Glass

Color Filter Glass Overview

Colored filter glasses, each with its own spectral characteristics for transmitting and absorbing light at various wavelengths of the visible spectrum, are available in a variety of filter types. This type of optical material is most commonly used in cinematography, clinical chemistry, fluorescence microscopy, lighting, machine vision medical instruments, optoelectronics, and spectroscopy applications. The strict control of material thickness achieves precise filtering of the spectrum across a large bandpass. Material thickness can be calculated using transmittance simulation software available from the material manufacturers.

Filters are available in several transmission/absorption options such as:

  • Bandpass filters – allow a portion of the spectrum to transmit while absorbing all other wavelengths.
  • Longpass filters – allow a longer portion of the spectrum to transmit while absorbing all other wavelengths
  • Shortpass filters – allow a shorter portion of the spectrum to transmit while absorbing all other wavelengths.
  • Multiband filters – allow transmission of several wavelength bands to pass through.
  • Notch filters – reject a small portion of the spectrum, while transmitting all other wavelengths.
  • Edge filters – allow the wavelengths on either side of the cut-on to transmit.
  • Neutral density filters – evenly reduce transmission across a portion of the spectrum.
  • Contrast enhancement filters – promote the intensity of certain colors primarily.

Glass filters are physically and chemically stable, and they are more durable in comparison with plastic and film filters.  The precision of transmission and absorption can be increased by adding a multilayer coating.

The table below shows comparable materials from different manufacturers.

Filter Glass Cross Reference Sheet
Filter GroupsSchottHoyaIsuzu
Bandpass-BlueBG3B370
Bandpass-BlueBG7B480
Blue-Green BandpassBG18CM-500IEC-501
Bandpass-BlueBG25B-390 or BG-380IEB-400
Blue-Green BandpassBG36V-10
Blue-Green BandpassBG38C500IECC-508
Blue-Green BandpassBG39CM-500SIEC-578
Blue-Green BandpassBG40CAW-500
Blue-Green BandpassBG42
Blue-Green BandpassBG50
Blue-Green BandpassBG55
Blue-Green BandpassBG60
Blue-Green BandpassBG61
Blue-Green BandpassBG62
Blue-Green BandpassBG63
Blue-Green BandpassBG64
Blue-Green BandpassBG66HS
Blue-Green BandpassBG67
Longpass-IR transmittingGG395L-39
Longpass-IR transmittingGG400L-40
Longpass-IR transmittingGG420L-42ITY-418
Longpass-IR transmittingGG435Y-44
Longpass-IR transmittingGG455Y-46
Longpass-IR transmittingGG475Y-46
Longpass-IR transmittingGG495Y-48
Longpass-IR transmittingGG495Y-50
Shortpass-Heat AbsorbingKG1HA-30ISK-157
Shortpass-Heat AbsorbingKG2HA-50ISK-150
Shortpass-Heat AbsorbingKG3HA-15ISK-167
Shortpass-Heat AbsorbingKG5HA-5ISK-171
Neutral DensityNG1ND-0
Neutral DensityNG3ND-03 OR ND-05
Neutral DensityNG4ND-13ING-125
Neutral DensityNG5ND-25ING-250
Neutral DensityNG9ND-09
Neutral DensityNG11ND-50ING-375
Longpass-visible & IR transmittingN-WG280U-28
Longpass-visible & IR transmittingN-WG295U-30
Longpass-visible & IR transmittingN-WG305U-30
Longpass-visible & IR transmittingN-WG320U-32
Longpass-IR transmittingOG515Y-52
Longpass-IR transmittingOG530Y-52
Longpass-IR transmittingOG550O-54
Longpass-IR transmittingOG570O-5G
Longpass-IR transmittingOG590O-58
Longpass-IR transmittingRG9RT-830
Longpass-IR transmittingRG610R-60
Longpass-IR transmittingRG630R-62
Longpass-IR transmittingRG645R-64
Longpass-IR transmittingRG665R-66
Longpass-IR transmittingRG695R-70
Longpass-IR transmittingRG715R-72
Longpass-IR transmittingRG780IR-80
Longpass-IR transmittingRG830IR-83
Longpass-IR transmittingRG850IR-85
Longpass-IR transmittingRG1000RM-100
Bandpass-UV transmittingUG1U-360
Bandpass-UV transmittingUG2A
Bandpass-UV transmittingUG5U-330
Bandpass-UV transmittingUG11U-340
Bandpass-greenVG9G-530, G-533IVG-530
Bandpass-greenVG20

Available Materials

Based upon customer demand, Sydor Optics offers Color Filter Glass made from the following substrate materials. Of course, if you don’t see a material you need, please contact a Sales Engineer, who will gladly discuss additional options that may be available.

Color Filter Glass
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