Know something on How LED Flashlight work?

Light Emitting Diode or LED is a light technology used in many devices such as flashlights. Today, you can choose from those that emit infrared wavelengths, ultraviolet lights and those with extremely bright settings that can light up a very dark area. anty881209wong 131129

LEDs found in average hand-held flashlights are housed in a parabolic reflective cavity covered with a clear lens to protect the diode. The power source for lighting the diode is a required series of batteries. The diode and the batteries are separated by a switch. The whole mechanism, batteries and switch are housed in a tube or appropriate housing for the batteries required. This closed circuit charges the diode when the switch is turned to the on position, therefore allowing the current to travel through the LED. The light produced is bright, clear and intense and is bounced off the reflective cavity, through the lens and out into the surrounding area. A lens controls the area the light can spread across and will direct the beam to fill a wide or narrow area.

 

The advantages of LED flashlights include more efficiency at lower power levels and longer battery life than the conventional flashlights. LED flashlights can also be electronically managed to give a constant light output as the batteries gradually die out. LEDs also do not change color as the battery output decreases, unlike the conventional light bulb.

You can place this device in a much attractive shell. You can use a make-shift shell if you want. This is a good project you can do at home so you have something to use during power outages. This way, you can have a lot of spare lighting at home.