a thin layer of coloured gelatine, glass, etc, that transmits light of certain colours or wavelengths but considerably reduces the transmission of others
Examples of 'colour filter' in a sentence
colour filter
A tripod light has colour filters that are changed during the hour-long treatment.
Globe and Mail (2003)
The breakthrough technology allows viewers to experience the same sensation of depth that previously required polarising glasses or ones with colour filters.
Times, Sunday Times (2010)
The app, popular with young people, allows users to share photographs with friends and to apply colour filters.
Times, Sunday Times (2012)
There are 52 layouts to choose from, and fun effects to apply, such as colour filters, curved borders and mirror images.