OPTICAL FILTER

摘要

An optical filter for filtering light rays having mutually different light intensity and direction of incidence on the optical filter along a number of mutually different directions and having a predetermined wavelength or wavelengths, has a carrier body which is transmissive for light rays having the predetermined wavelength or wavelengths and a plurality of photo-adaptive light-blocking elements distributed within the carrier body rendering the optical filter least transmissive in the direction along which the light ray having the highest light intensity is incident.