Peak white luminance ratio
5.—(1) In the normal configuration, the peak white luminance of the electronic display in a 100 lux ambient light viewing environment must not be less than—
(a)if the electronic display is primarily intended for close viewing by a single user, 150 cd/m2.
(b)in any other case, 220 cd/m2.
(2) If the electronic display’s peak white luminance in the normal configuration is set to lower values, it must not be less than 65 per cent of the peak white luminance of the display, in a 100 lux ambient light viewing environment in the brightest on mode configuration.