I owned my first LED flashlight about nine years ago. It was a handy keychain using a button-cell battery. Ever since, LED flashlights have evolved and today’s models have shinier lights and more LEDs.
Light-emitting diodes or LEDs are solid-state transistors which give off light when electricity passes through them. But unlike incandescent bulbs, it has no filaments, and no bulbs. It doesn’t burn, nor generate much heat. And best of all, it consumes a small amount of energy.
The small wattage makes the bright LED flashlight a very green proposition. It doesn’t require a large energy source to generate light and it doesn’t create lots of heat either. And since it’s a single piece, it has a long life span.
Although regular LEDs come in a wide range colors, the diodes used in flashlights tend to have a bluish tinge. This is not really a obstacle to having a bright flashlight. In fact, currently there are small projectors which have LEDs for the lighting element.
The titanium LED torch are available in different sizes. There are the thumb-sized models which are smaller than a thumb, with larger lamps using banks of LEDs. Using banks LEDs, the size of a lighting unit can be as large as any common flashlight, with any number of designs. There was even one design which has a circular array of LEDs for a flashlight torch complete with reflector unit, which also had a rectangular set on the side but without the reflector unit. This is great when camping, replacing portable battery powered fluorescent lamps.
