Prospect of LED replacing incandescent lamps in stage lighting

The advantages of energy saving, high efficiency, bright color, long service life and convenient use have created great possibility for the new generation of light source LED to replace traditional lighting in stage lighting to a large extent in the future. After the opening ceremony of international events such as the Beijing Olympics, the Guangzhou Asian Games, and the Shenzhen Universiade, the intensive drills of the stage lighting effects were enough to surprise the heavens. The 2012 Spring Festival Gala completed a large-scale performing arts lighting show with the help of LED, which pushed the stage charm of LED lighting to the front of the general public and brought it into full play. [img] /uploadpic/news/201204191416074. jpg. jpg [/img] LED lamps have broad prospects for stage lighting based on their own advantages. According to relevant practitioners, LED lamps have better color performance than traditional light sources. At present, when LED is applied to stage lighting, it is mostly used to combine three primary color LED tubes that are red, green and blue respectively to form a white light lighting mode. Comparing LED lamps with incandescent lamps, the luminous efficiency of LED tubes is more than twice higher than that of incandescent lamps. The light emitting diode adopts a more efficient light path design by taking advantage of its small size and low temperature. the utilization rate of luminous flux of light source is several times higher than that of incandescent lamp stage lamps. Even with the same luminous flux, incandescent lamps are several times more powerful than LED lamps. Therefore, LED lamps with lower power can meet the requirements of light intensity required by the stage. The optical design inside the LED is called primary design, the condenser cup design is secondary design, and the combination of the condenser Cup module is the third design. At present, more common LED beam lamps all use special condenser cups, and LED light emitting diodes are installed in fully transparent condenser cups. However, the LED tube and the condenser Cup are combined into a module, and the luminous flux is not enough. In this case, the solution is to combine the same modules again. make it a flat LED array. The light emitted by an LED lamp with more than one hundred watts is equivalent to the brightness of a tungsten filament incandescent lamp with several hundred watts. In this way, through a large number of LED lights, the generated strong light that meets the needs of the stage can meet the needs of stage applications and meet the energy-saving effect. Looking back on the color light used in the previous stage lighting, it is the method of adding color filter paper or other color filters before the white light lamp. The disadvantage of this is that a large amount of unwanted colored light is blocked, the emitted colored light is quite weakened, and due to the characteristics of human eyes, it is particularly insensitive to the red and blue-purple at both ends of the visible spectrum. A large number of light sensitive to human eyes is blocked, and the luminous efficiency of lamps is lower. For example, in order to prevent the color filter from fading at high temperature, the color filter must pass through a large amount of infrared components in the spectrum. While the blue color filter passes through short-wavelength blue light, some long-band Red light passes through. Therefore, the blue light obtained by adding a blue color filter in front of the incandescent lamp not only weakens the brightness, but also the color is not pure, and the actual effect is not satisfactory. Unlike incandescent lamps, which obtain blue light by installing a blue color filter in front of the lamp, when the LED needs a certain color light, it only reduces the unnecessary spectrum emission and emits the color light of the required spectrum. Because the blue light brightness of the LED lamp is equivalent to the brightness of the incandescent lamp plus the blue paper with a power greater than ten times. Therefore, the color light of LED lamps is too pure and bright in actual use. In order to reduce the saturation of color light, some even add LED lamp beads emitting white light to produce elegant color light. The luminous efficiency of LED is higher than that of incandescent lamp, the luminous efficiency of lamps is also higher than that of ordinary incandescent lamps, and the efficiency of colored light is much higher. Therefore, lighting designers have found that, LED lamps are used for stage performances to produce the required color light, which can give full play to the advantages of LED. Since the emergence of blue light, white light and high brightness LED in the last century, its luminous efficiency has been continuously improved. tens of thousands of hours of life, fast switching, easy dimming, bright color, energy saving and environmental protection have begun to attract the attention of the industry. However, although LED stage lamps have shown obvious advantages in practice, they have not been popularized in stage performances so far. The factors come from many aspects, including high price, single variety, uneven quality, etc. Even so, with the continuous development of the industry, the breakthrough of technology and the vigorous promotion of application, the luminous efficiency of LED is also continuously improving and the price is continuously falling. The emergence of the new combined die also allows a single LED tube (Module)The power of is continuously increasing. Through the continuous efforts of the industry, the breakthrough of new optical design, the development of new lamps, and the single product situation are expected to be further reversed. The improvement of control software also makes the use of LED stage lamps more convenient. These gradual changes all reflect the broad prospect of LED lamps in stage application.