A flashlight is a hand-held portable electric-powered light source. Usually the light source is a small incandescent light bulb or light-emitting diode (LED). A typical flashlight consists of a light bulb mounted in a reflector, a transparent cover to protect the light source and reflector, a battery, and a switch. These are supported and protected by a case. anty881209wong 140113
But now, with the development of the LED technology, LED technology is also be used in the flashlight. People call it LED Flashlight. This kind of flashlight uses less energy than the traditional one with its high efficient LED.
They use about 85% less power than incandescent filaments, immediately improving battery life. Since LEDs require less power, smaller batteries can be used; allowing the devices to be miniaturized. Thirdly, the solid state electronics of an LED allow for regulation by a microprocessor. The microprocessor normalizes the light output, allowing for a steady luminous flux as the batteries drain.
The microprocessor also allows the unit to have different modes of operation, such as low, medium, and high intensities, as well as SOS and strobe modes. The user can tailor the light output for their specific need. These flashlights also use advanced reflectors to better focus the light output. Further, the LED lighting elements have up to 50,000 hour lifetimes, and cannot be broken if the flashlight is dropped.
High output LED flashlights have revolutionized the venerable and indispensable handheld lighting device. Historically, flashlights were big clunky things powered by two D-cell batteries, with the light coming from a small incandescent bulb, focused by a reflector. But with the LED technology, now people can enjoy a healthier and green LED flashlight for any outgoing activities. Using the LED flashlight to save energy cost and enjoy convenient life.
No comments:
Post a Comment