490QM20 25 mm Dia. Surface Coating; Bandpass Filter Surface Coating

The 490QM20 is a high-quality Bandpass Filter, sourced from the reputable vendor, Omega Optical. This filter, with a catalog number of 490QM20, is currently in stock and available for immediate use. The filter's primary function is to allow light transmission within a specific range of wavelengths while blocking out unwanted light from outside this range.

This circular filter has a diameter of 25 mm and a thickness of 1.5 mm, making it a versatile choice for various optical applications. The base shape of the filter is a Thin Lens, which is designed to minimize optical aberrations and distortions.

The 490QM20 filter is made from UVFS MAL-1965, a material known for its excellent optical properties. The filter's physical data includes a cut-on wavelength of 480 nm and a cut-off wavelength of 500 nm, with a central wavelength (CWL) of 490 nm. This specific wavelength range makes it ideal for applications that require precise light filtration in the yellow-green region of the spectrum.

The filter's coating is another notable feature. Both the front and back surfaces of the filter are coated with OME 490QM20, a surface coating that enhances the filter's performance and durability. This coating helps to ensure optimal light transmission and reduces the risk of surface damage or contamination.