In modern society, with the rapid development of technology, popular culture and advertisements are everywhere, requiring a more increased demand for led stage lighting. Having a wide range of color, which meets the need of various circumstances, led stage lighting plays an important part in concert, performances, celebrations and so on, and is an alternative to traditional stage lighting instruments which use halogen lamp or high-intensity discharge lamps. Like typical LED instruments, they have a relatively higher light output with lower power consumption, making them not only entertain, decorate and but also last longer. In LED PAR cans, a round printed circuit board with LEDs mounted on is used in place of a PAR lamp. Moving head types can either be a bank of LEDs mounted on a yoke or more conventional moving headlight with the bulb replaced with a LED bank.
In fact, there is no such term as an LED PAR can – it is a misnomer possibly attributed to Chinese makers. As there is no Parabolic Aluminised Reflector in an LED ‘PAR’, they would be more reasonably and accurately referred to and named as ‘LED floodlights’. Several diode fixtures area unit currently created employing a little range of high-output diodes permit the beam to be targeted on a “hard edge”, allowing full use of gobo/beam effects.
Led stage lighting has some advantages, which are summed up to the following two major points. LED instruments can have a series of various colored LEDs, often blue, green and red. In most times, different light output colors are required and this may be achieved by adjusting the intensity of each LED color cluster. Generally speaking, led stage lighting should have a long service life relative to other choices, without expending replacement lamps or color gel. LED instruments are increasingly and prominently used for live music events, most notably festivals where they are more visible than conventional lighting under daylight as they are enjoyed as more environmentally friendly as the fixture for they use far less power than other lighting. The 2008 Concordia College Christmas Concert used LED lighting to light the murals.
Another advantage of led stage lighting is that they can be controlled directly using DMX and do not require additional dimmers and LEDs with their intensity being adjusted by circuitry onboard the fixture. Several units can be daisy-chained to one power supply because of their low power consumption. Due to low heat output, LED instruments can be used in areas where the high amount of heat conventional stage fixtures put off would not be ideal. For that reason, led stage lighting is used to light ice sculptures, especially when lighting the sculptures from within. As every coin has two sides, apart from the fact that led stage lighting is environmentally friendly and has other merits, it cannot be used to create a hard-edged beam, which is needed for gobos and other effects which require the use of an ellipsoidal reflector spotlight, although LED fixtures are now made that through the use of a small number of high-output diodes now allow the beam to be focused to a “hard edge”, allowing full use of beam effects. Because color mixing is done using three or more colors of LEDs, mixed colors will have multiple edges to shadows where different colors are showing. However, several manufacturers have introduced instruments that group three or more LEDs behind a single lens to make the multiple shadow lines less noticeable. Although LED has some drawbacks, one can foresee that the use of it will only expand and improve on account of energy-saving and technology improvement.