1992-94 a team at Nela Park, Cleveland, GE, with Jack Strok, creates ceramic metal halide lamps (CMH). Philips follows under W.de Kock and calls their versions CDM Ceramic Discharge Metal. Sales begin 1994. This technology improves to be a superior lighting technology with up to 150 lm/W with good color rendering and 20.000h life with very high lumen maintenance 
1994 T5 lamps with cool tip are introduced to become the leading fluorescent lamps with up to 117 lm/W with good color rendering. These and almost all new fluorescent lamps are to be operated on electronic ballasts only.