Dimmable CFL from Philips

Now the dimming limitation has also been surmounted. Philips Lighting introduced the Earth Light® Dimmable CFL in 1997. The light output range can be varied from 100% down to 10%, and the lamp can be used with standard wall dimmers, photocells, and switching devices, even those marked “incandescent only.” One of this lamp’s most important applications will be in recessed-can downlighting in homes (especially kitchens and living rooms), retail showrooms, and other locations where the dimming function is considered necessary.

Currently there is only one dimmable model, a 23-watt Earth Light lamp with integral electronic ballast. It has a color temperature of 2700 K, a color rendering index (CRI) of 82, and initial light output of 1500 lumens. Total length from end to end is 6.6 inches (167 mm), and maximum diameter is 2.3 inches (60 mm). Like other CFLs, the rated life is 10,000 hours.