LBTEK Quality Shortpass Filters allow light below the cut-on (cut-off) wavelength to pass through. One side of the filter is coated with a filter film, while the other side has an anti-reflection coating, ensuring high transmittance for light below the cut-on (cut-off) wavelength and effectively suppressing light above it. The optical density (average) in the stopband can reach OD 5, meaning the transmittance is <0.001%. These Quality Edgepass Filters come mounted in black anodized aluminum rings, with the light direction clearly marked by an arrow on the housing for easy installation and use.

LBTEK Quality Longpass Filters transmit light above the cut-on (cut-off) wavelength with a transmittance exceeding 90%. They also suppress light below the cut-on (cut-off) wavelength, achieving an average optical density (OD) of 5 (OD), meaning a transmittance of less than 0.001%. These Quality Longpass Filters are pre-mounted in a black anodized aluminum ring with an arrow marking the direction of light for easy installation.