Why Category 2 (Cat 2 / Cat II) Fluorescent Light Diffusers?
Around 1989 there was a need for a suitable lighting requirement where computers were in use to reduce lighting reflection on monitor screens. At that time monitors were Cathode Ray Tube (CRT) and Operating Systems tended to use green or white type font on a black screen. The category 1-2-3 classification fluorescent metal (grid style) light diffuser were introduced approximately 5 years later. The fluorescent light diffuser categories were as follows; • Category 1 (Cat 1) for Computer suites • Category 2 (Cat 2) for General office and workplace environments • Category 3 (Cat 3) for Occasional use computer environments. Unfortunately this style of fluorescent light diffuser panel can produce a gloomy environment if used on its own and no consideration is taken into surrounding surface reflectance. It is no longer necessary to specify these categories and fluorescent light diffuser panel styles mainly due to the use of full colour Operating Systems on computers and the introduction of T
