SCHOTT Colour Glass Filters
SCHOTT Colour Glass Filters are high-performance optical materials engineered for precise spectral control across the ultraviolet, visible, and near-infrared regions. Designed for demanding optical and photonic systems, these filters achieve their performance through intrinsic material absorption, delivering stable and repeatable spectral characteristics that do not degrade over time like traditional thin-film interference coatings.
With excellent optical homogeneity, predictable transmission curves, and strong environmental durability, SCHOTT colour filters are widely used in imaging systems, spectroscopy, fluorescence analysis, machine vision, laser instrumentation, and scientific metrology. Their inherent resistance to humidity, temperature cycling, and UV exposure ensures long-term stability in both laboratory and industrial environments.
SCHOTT’s extensive portfolio includes long-pass, short-pass, bandpass, neutral-density, heat-absorbing, and conversion filters, enabling precise control over wavelength selection, attenuation, and spectral shaping. This makes them ideal for biomedical diagnostics, chemical analysis, environmental monitoring, optical sensors, photometric calibration, and high-resolution imaging where accurate light filtering is essential.
Available in a wide range of glass types, thicknesses, and custom geometries, SCHOTT Colour Glass Filters offer exceptional versatility for OEM integration and custom optical assemblies. Their robust physical and chemical stability, combined with consistent spectral performance, makes them a preferred choice for engineers and designers requiring reliable wavelength filtering, high transmission stability, and long-lasting optical performance across UV, visible, and NIR applications.
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FAQ
FAQ
Q: What are SCHOTT Colour Glass Filters used for?
A: SCHOTT colour glass filters are widely used in imaging, spectroscopy, machine vision, photometry, fluorescence, laser diagnostics, and scientific instrumentation. They provide stable wavelength control across the UV, visible, and NIR by using absorptive filtering rather than thin-film coatings.
Q: How do SCHOTT filters differ from coated interference filters?
A: Unlike interference filters, SCHOTT filters rely on intrinsic material absorption, meaning there are no delicate coatings that can peel or shift. This makes them extremely durable, environmentally stable, and resistant to humidity, temperature changes, and UV exposure.
Q: What types of SCHOTT filter glasses are available?
A: SCHOTT offers a comprehensive range including long-pass, short-pass, bandpass, heat-absorbing, neutral-density, conversion filters, and coloured glass for precision wavelength shaping across the spectrum.
Q: Are SCHOTT Colour Glass Filters hygroscopic?
A: No. SCHOTT optical filter glasses are non-hygroscopic and remain stable in humid or outdoor environments, unlike halide crystals such as KBr or NaCl.
Q: Can SCHOTT filters be used with high-power light sources or lasers?
A: Yes. SCHOTT filter glasses offer good thermal resistance, stability under high illumination, and are suitable for many laser, LED, and high-intensity lighting applications. (For extremely high-power lasers, wavelength-specific coated substrates may still be preferred.)
Q: What components can be made from SCHOTT filter glass?
A: SCHOTT materials can be manufactured into windows, plates, prisms, apertures, filters for cameras, optical assemblies, and custom-shaped components for imaging systems and analytical tools.
Q: How durable are SCHOTT Colour Glass Filters?
A: They are highly durable, offering strong resistance to scratching, UV degradation, chemical exposure, and temperature cycling. This makes them ideal for industrial, medical, and outdoor optical systems.
Q: Can SCHOTT filters be anti-reflection coated?
A: Yes. SCHOTT filter glass can be supplied uncoated or with custom AR coatings to improve transmission in UV, visible, or NIR bands. Protective and performance-enhancing coatings can also be applied.
Q: Are SCHOTT filters safe to handle?
A: Yes. SCHOTT colour glass is non-toxic, chemically stable, and easy to handle using standard optical-component procedures.
Q: Where can I find full technical data for SCHOTT Colour Glass Filters?
A: Complete datasheets, spectral curves, optical density charts, and material specifications are available here.