Absorptive Optical Filter Glass
Hoya Colour Glass Filters
Absorptive optical filter glass families for wavelength selection, colour correction and attenuation
HOYA coloured glass filters are families of absorptive optical glasses engineered to provide defined spectral transmission and absorption. Available families include sharp-cut, UV, infrared-transmitting, colour-compensating, neutral-density, heat-absorbing and calibration filter glasses. The exact transmission curve and physical properties depend on the HOYA glass code and reference thickness, so the filter grade and finished thickness must be specified together.
Is this material right for your application?
Use When:
Absorptive filtering is required
Precise wavelength blocking or transmission is needed
Imaging or sensing systems require colour correction
Long-term spectral stability is important
Simple, robust filtering solutions are preferred
Avoid When:
Sharp cut-on or cut-off edges are required
Tunable or interference filtering is needed
Extremely narrow bandwidths are required
Consider Alternatives:
Schott Colour Glass Filters – wider standard range and availability
Interference filters – sharper spectral cut-offs
Thin-film coatings – custom spectral control
Explore Related Optical Materials
Schott Colour Glass Filters
N-BK7 / BK7 Optical Glass
Fused Silica (SiO₂)
Material specifications and frequently asked questions
FAQ
Q1. What are Hoya colour glass filters used for?
Spectral filtering in imaging and measurement systems.
Q2. What wavelength ranges are available?
UV, visible, and near-IR depending on filter type.
Q3. Are Hoya filters optical-grade?
Yes.
Q4. What are alternatives to Hoya filters?
Schott colour glass filters.
Wide catalogue of filter types
Stable spectral performance
Can be AR-coated