Schott Longpass Colour Glass Filters are specialized optical components designed to transmit wavelengths longer than the cut-on wavelength while blocking shorter wavelengths. They are commonly used in applications requiring the isolation of specific spectral regions for analysis, imaging, or laser protection. We supply these filters in various Schott glass types, tailored to different spectral needs in the UV, visible, or NIR ranges. Ideal for scientific and industrial use, these filters come in several dimensions, providing flexibility for integration into a multitude of optical systems.