Beam Angle of the lamps and lanterns of same optical properties are the same?

Normally, the beam Angle of the same lamps and lanterns, optical performance is the same? Through detailed analysis, this paper illustrates the same beam Angle of the LED lighting lamps and lanterns, optical performance may not be exactly the same, even there's a big difference. Cleared for lamps and lanterns is the beam Angle of fuzzy recognition, easy to do in the lighting design more reasonable and more scientific. Beam Angle beam Angle is one of the most important technical parameters of the lamps and lanterns, refers to one of the center line of the beam in the plane, light intensity is equal to 50% of maximum light intensity of the Angle between the two direction. According to the size of its value, usually divided into its narrow beam, the beam and the wide beam three categories. Can light distribution curve, intuitively to distinguish between them. However, there is a potential problem: the beam Angle of the lamps and lanterns of same optical performance is the same? Here, we discuss the following four common and typical light distribution curve shape. For comparison, the beam Angle of unity of 30 & deg; , and four were 10 w, lamps and lanterns of lamps and lanterns efficiency is 72%, namely: the initial luminous flux is 1000 lm, luminous flux output 720 lm. Synthesize four light distribution curve to a picture, you can clearly see that: although the shape of each are not identical, but their light beam Angle is 30 & deg; 。 Here, in order to guarantee their initial luminous flux, luminous flux output are the same, four curves of maximum intensity is not the same, just for the sake of comparison, only they are unified in the same height. Speckle contrast again, take a look at four different light distribution curve of the lamps and lanterns of speckle contrast. 1 meter distance from one plane, vertical irradiation of light and illuminance value contrast: vertical light speckle contrast figure of four kinds of lamps and lanterns to wash the wall effect of speckle contrast: wash wall light contrast figure wash wall light contrast figure, above all, clear differences may safely draw a conclusion that, beam Angle of the same lamps and lanterns, optical performance may not be exactly the same, even there's a big difference. So, the optical parameters of lamps and lanterns is not enough to only talk about the beam Angle, should use light distribution curve. In the solution of the problem through, and then help the lighting designers more reasonable, more scientific use of LED lighting lamps and lanterns lighting design. Floating introduction note floating photoelectric construction, focusing on the design, the production of lamps and lanterns for high-end LED commercial lighting, such as the airport project provide the overall solution, specify cooperation brand for domestic 6 big airport. Tel: 0755 - 86699010, 400 - 636 - Preach true: 7788-0755 86699013 contact address: nanshan district, shenzhen science and technology park changhong technology mansion 16 layer choose lamp web site: http://www. yinfu100. cn/