Chroma Technology Bessel R Filter

This Chroma Technology Bessel R filter is a red photometric filter in Chroma's UBVRI filter series. Chroma Technology filters have extremely durable, sputtered hard coatings using single substrates of the best glass, eliminating the need for laminations. These coatings can withstand humidity changes and extreme temperature fluxes and remain spectrally accurate in center wavelength (CWL) and bandpass adherence. All primary filter coatings are applied on the front surface and anti-reflection coatings on the rear surface to prevent ghosting and to maximize transmission.