Precision Absorptive Filter Glass
Schott Colour Glass Filters
Absorptive filter-glass grades for controlled spectral transmission in UV, visible and near-IR systems
SCHOTT Optical Filter Glass is a broad family of absorptive glass grades designed for controlled spectral transmission and blocking. Individual grades differ in refractive index, density, hardness, thermal expansion, chemical resistance and transmission curve, and many specifications are defined at a reference thickness. The exact SCHOTT glass code and finished thickness should therefore be treated as part of the optical specification.
Is this material right for your application?
Use When:
High-precision absorptive filtering is required
Tight spectral tolerances are needed
Scientific or industrial imaging systems are used
Long-term optical stability is critical
Repeatable, standardised filter performance is required
Avoid When:
Interference-level spectral precision is required
Tunable or angle-sensitive filtering is preferred
Cost constraints outweigh spectral accuracy
Consider Alternatives:
Hoya Colour Glass Filters – alternative glass compositions
Interference filters – narrowband or steep-edge filtering
Dichroic filters – angle-dependent spectral separation
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Material specifications and frequently asked questions
FAQ
Q1. What are Schott colour glass filters used for?
Precision spectral filtering in optical systems.
Q2. What wavelength ranges do they cover?
UV, visible, and near-infrared.
Q3. Are Schott filters optical-grade?
Yes. Manufactured to high optical standards.
Q4. What are alternatives to Schott filters?
Hoya colour glass filters and interference filters.
Long-pass, short-pass, and band-pass types available
Excellent long-term spectral stability
Optional optical coatings