antihalation /ˌæntɪhəˈleɪʃən/

• 1. 

  N a process by which light, passing through the emulsion on a film or plate, is not reflected back into it but is absorbed by a layer of dye or pigment, usually on the back of the film, thus preventing halation 防光晕

• 2. 

  N (as modifier) 防光晕的

  例：

  antihalation backing