optical filter
device that selectively transmits light of certain wavelengths
Spatial filter
optical device which uses the principles of Fourier optics to alter the structure
interference filter
wavelength-selective optical filter
Infrared cut-off filter
optical fiters that block near-infrared while passing visible light
diffusion filter
specific optical diffuser used in photography
Wood's glass
filter allows ultraviolet light to pass
astronomical filter
telescope accessory used to improve details of viewed objects
polarizer
optical filter device
color gel
material used to color light or correct color