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Archive for the ‘LED Display’ Category

Modern Led Devices Vs. Traditional Light-emitting Sources

Light-emitting diodes (LEDs) represent various types of semiconductor devices that produce incoherent narrow-spectrum light fascicles when powered with a steady-state voltage electrical source, producing the effect known as electroluminescence. LEDs come in a wide variety of shapes, sizes and colors, nowadays serving for a multitude of purposes: illuminating traffic signals, railroad crossing signals and display panels, facilitating optical fiber communications, providing backlighting for LCD televisions and displays, being integrated in remote control and optical devices (infrared LEDs), or being used simply for decorative purposes (LEDs can emit light of various colors blue, green, yellow, orange, red and purple, to name only a few).

LED lights have come a long way, today’s offer comprising highly reliable, durable and economical designs that can take various forms (LED bulbs, LED pods, LED tubes, LED displays, etc) and fulfill many different roles (functional or purely aesthetical).

LEDs are by far superior to traditional light sources such as incandescent light bulbs and fluorescent lamps, as they use less energy and produce less heat (unlike conventional light sources which consume a lot of electrical energy but transform only a fraction of the used energy into light, converting the rest of it into heat, LED lights are very economical, consuming less electrical energy and transforming a great part of it into light), have an impressively long life span (LED lights can last for more than 10 years), light up more quickly (in most cases LEDs can achieve full brightness in a matter of microseconds, compared to some fluorescent lamps that usually light up after 0,5 or 1 second and achieve full brightness in an average of 30 seconds) and can directly focus the light they emit (unlike incandescent and fluorescent light sources that generally include an external reflector that redirects the luminous rays in the desired direction).