RGB filters:
Current image sensors can only detect light intensity, not colour. In order to perceive a colour image, colour filters (Colour Filter Array - CFA) are needed.
Colour filters only allow light of one wavelength, only red light passes through the red colour filter, the rest is absorbed by the filter. A filter of different colours is placed on the surface of the image sensor. Generally, the three primary colours are used for filters, i.e. red, green and blue (R,G,B).
Current image sensors can only detect light intensity, not colour. In order to perceive a colour image, colour filters (Colour Filter Array - CFA) are needed.
Colour filters only allow light of one wavelength, only red light passes through the red colour filter, the rest is absorbed by the filter. A filter of different colours is placed on the surface of the image sensor. Generally, the three primary colours are used for filters, i.e. red, green and blue (R,G,B).
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General description:
Interference filters are based on the phenomenon of light interference. The light of a given wavelength passing through them is amplified, and the light intensity of other wavelength ranges is weakened or extinguished.
They are used when we want to select a relatively narrow band from the light with a continuous spectrum. We have to isolate a line appearing at a specific wavelength from exciting light with a linear spectrum. Their transmittance depends on the angle of incidence of the incident light.
Interference filters are based on the phenomenon of light interference. The light of a given wavelength passing through them is amplified, and the light intensity of other wavelength ranges is weakened or extinguished.
They are used when we want to select a relatively narrow band from the light with a continuous spectrum. We have to isolate a line appearing at a specific wavelength from exciting light with a linear spectrum. Their transmittance depends on the angle of incidence of the incident light.
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