The 46-418 is a 50.8 x 50.8 mm SCHOTT N-WG295 Longpass Color Glass Filter, designed to transmit light with wavelengths longer than 300nm. This filter is sourced from Edmund Optics, a leading vendor in the optical industry, and is available for immediate purchase from their website.
The filter is made from SCHOTT N-WG295 glass, a material known for its excellent optical properties and durability. It features a rectangular base shape, with a width and height of 50.8mm each, and a thickness of 3mm. The filter's geometry is designed to provide a thin lens shape, which can be beneficial in certain optical system configurations.
The 46-418 filter's coating is another notable feature. Both the front and back surfaces are coated with EDM 46-416, a coating that enhances the filter's performance and longevity. The physical data of the filter indicates a cut-on wavelength of 300nm and a cut-off wavelength of 0nm, further highlighting its longpass characteristics.