This standard specifies the terminology, product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of reflective photographic light bulbs (hereinafter referred to as "light bulbs"). This standard applies to reflective photographic light bulbs with a supply voltage of 220V or 110V and a power of no more than 500W, used for photographic lighting. This standard should be used together with QB/T2048 "General Technical Conditions for General Incandescent Bulbs".