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Question:

Heroes, can you tell me why the stage light has partial color phenomenon?

Please help to answer, thank you very much.

Answer:

To solve this problem, many lighting manufacturers preferred experience is to filter is obliquely arranged, small in understanding, inadvertently found many lighting manufacturers will also have the technology patent application (lamps according to the application of time sequence as follows: color wheel, Chaiyi light patent No. 201110433066.6 stage lighting application of the color wheel and the control method; the lamp lights or patent No. 201220366890.4 bending type color plate; Hao Yang Electronic Patent No. 201220224992.2 stage lamp color wheel device; the Pearl River lighting patent No. 201210289242.8), stage lighting filter device of this technology is to be the angle of color and lighting lamps are installed in horizontal direction to form a 10-12 degree, which can avoid direct light bulb color vertical circulation reflected back to the core and bulb filament, molybdenum sheet welding pole, with scattered light bulb When the filter is added, the temperature of the filament and the molybdenum sheet can be controlled at less than 350 DEG, so as to ensure the service life and normal use of the bulb.
Because the modern stage light beam projection system of high-pressure mercury lamp products, namely the lighting lamp light source and the reflecting cup integrated design, light emitting focal basic control in the range of 31-41mm lamp arc focusing ultrashort, commonly known as the "point source". The advantages of such light is of small volume, light weight, low power, high efficiency, rotating reaction speed, can form a strong space form in the stage; the disadvantage is the height of the lamp focusing spot is small, light, shop area is not large, but because the bulb focal length is very short, the lamp loading color, light bulbs will be part of back to the center of the lamp bulb lamp rod and ball position through our vertical circulation reflected two times caused by heating the filament of the bulb and the center, the key position of the molybdenum sheet, this will seriously affect the service life of the bulb, lamp or even bad.
This technique has been widely applied in the stage light, but then again, our lamps tilted 10-12 degrees, color in wide-angle prism, look carefully will have partial color phenomena, especially in the use of orange and yellow color and similar light spot will appear green shadow, the reason is because. Our installation of tilt angle of tilt, the color itself has a color color, plus zoom colorful refraction principle and spot angle angle prism, the transition color source amplification, in view of representation with partial color light. This is "you can't have it both ways", ensure the life of the bulb lamp, but failed to ensure the color purity, the color purity of it can not ensure the normal service life of bulb.
Experiment three: the lamp bulb color paperback, do not add white protective layer, which adds a high temperature light bulb with a circular metal in our intermediate optical center position, so it can effectively block the color center vertical reflection light, bulb temperature test shows that the problem is solved, do not worry about the use of lighting a new life, but also a lot of problems, the test found lamps each pattern has a shadow play in the wide angle prism, the color will still be a reflection of the gray shadow, toss for so long, still can not solve the problem of color purity is ideal, it need to continue efforts!This solution for sharing, fish and bear's paw can not be the problem, see if there are different views of industry expert. There are powerful R & D institutions or modification enthusiasts can try more. Warranty period products strongly recommend no personal modification, unauthorized modification, damage will not be guaranteed by the manufacturer. After all, the "turnip cabbage love", a lamp to light source, optical, dynamics, system algorithms and many other fields, only more perfect is not the most perfect products!

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