Halogen lamp
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A halogen lamp is an incandescent lamp consisting of a tungsten filament sealed in a compact transparent envelope that is filled with a mixture of an inert gas and a small amount of a halogen, such as
A halogen lamp operating in its fitting with the protective glass removed
A halogen lamp behind a round UV filter. A separate filter is included with some halogen light fixtures to remove UV light.
A close-up of a halogen lamp capsule
A burned-out R7S form factor halogen lamp
Compact fluorescent lamp
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A compact fluorescent lamp, also called compact fluorescent light, energy-saving light and compact fluorescent tube, is a fluorescent lamp designed to replace an incandescent light bulb; some types fi
Halogen lamp
…and makes the bulb mechanically more similar to a conventional lamp. Standard and halogen incandescent bulbs are much less efficient than LED and compact fluorescent lamps, and therefore have been or are being banned in many places. A carbon filament lamp using chlorine to prevent darkening of the envelope was patented…
The tubular-form CFL is one of the most popular types in Europe.
CFLs of varying power: 105W, 36W and 11W
Philips SL*18, an early CFL
A helical integrated CFL, one of the most popular designs in North America since 1995, when a Chinese firm marketed the first successful design