Flashlights
Flashlight technology is also used for products such as head-band type work lights, helmet-mounted lights, HPV / bicycle headlights, etc.
Three types of flashlight bulbs are standard tungsten, halogen, and LED (Light Emitting Diode). LED units have become very popular in recent years, with their cool-running temperatures, high efficiency, durability, and shock resistance.
The Cree LED is a different type of LED, however, that type has become quite popular, and does require a different type of “reflector” / lens design than standard type LEDS. Many of the standard-type LEDS use special lens technology, however, very few are found with a set-up where a reflector is used to disperse a large amount of light.
The efficiency of LED flashlights is normally the highest. One example is a 5w (approx. 4.5VDC) Cree LED flashlight producing 500 lumens of light output.