Colored and filter glass stands out due to its selective absorption in the visible wavelength range. The filters appear to be colored if their filter effect lies within the visible light spectrum.

SCHOTT, one of the leading filter glass manufacturers with a product range equalled by no other manufacturer world-wide, can provide virtually any size, shape and quality required by the customer. As series supplier, our expertise is available to our customers at all times and we help find the optimal solution to your filter problem.

Our range of glass filters with more than 60 types includes the following filter types in the visible wavelength range from 200 nm upwards:

• Band pass filters, which allow required ranges to pass through selectively
• Long pass filters, which block unwanted shorter wave ranges
• Short pass filters, which block unwanted longer wave ranges
• Neutral density filters, which have a virtually constant transparency especially in the visible range
• Conversion filters, which due to their spectral range increase or reduce the color temperature of radiation sources

Our filters are divided into the following groups:

• UG — Black and blue glass which permits the transmission of UV light
• BG — Blue, blue-green and band glass
• VG — Green glass
• GG — Yellow glass which permits IR light transmission
• OG — Orange glass which permits IR light transmission
• RG — Red and black glass which permits IR light transmission
• NG — Neutral glass with virtually constant radiation weakening in the visible range
• N-WG — Colorless glass with different cut-off positions in the UV range and which allows IR and visible light transmission
• KG — Virtually colorless glass with high transmission of visible light and absorption of radiation in the IR range
• FG — Blue and brown colored glass (conversion glass)