Wholesale led lights and led lighting,led light bulbs manufacturers and suppliers in China

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Led Lamp Bead StartedEnergy saving lamps consume less energy and achieve a higher level of Blue LED strip effects of lighting products, such as fluorescent lamps, ring-shaped lamps, compact fluorescent lamps, straight fluorescent lamp. LED flood lights flux Victor rate under the conditions provided for in the ignition, luminous flux of the lamp at a particular time in life and the initial ratio of the luminous flux of the lamp, expressed as a percentage. GB requirements: 2000h not less than 78%. Advanced level: 2000h not less than 90%. United States energy star: 40% rated service life not less than 80%. National level: quality-oriented enterprise, and the use of protective film technology, are able to meet the national standards. AC circuit power factor times the effective values of voltage and current values for apparent power and active power is only one part of it. Power factor is the LED panel of the active power and apparent power. Low power factor and harmonic contents in the current higher power pollute, destroy the balance of power, reactive power losses increase Color-rendering index----measure reality as true color ability of the object parameter of the light source. Color rendering index (0-100) high closer to natural color reproduction of the color of the light source. Color-rendering index low result in color distortion. Color rendering index of the common lamp types are as follows: Incandescent lamp: >95 tube type fluorescent lamp: 65-80 Rare earth trichromatic fluorescent lamps: about 80 high pressure sodium lamp: 25-60 Metal halide lamp: 70-90 LED:80-90 Color temperature----when the light and color of light emitted by the "black body" radiation in a temperature of color is the same as the "black-body temperature is known as the color temperature of the light source. "Blackbody" the higher the temperature, spectral blue component in the more and less the red component of the. For example, incandescent light is warm white, its color temperature 2700K, and color temperature of fluorescent lamps is about 6400K daylight color. By: Kelvin (k). Incandescent color temperature 2700K, fluorescent color temperature at about 2700-6400K, sodium lamp color temperature at around 2000K Luminous efficiency----light efficiency of the electrical energy into visible light, that is, consumed every tile light emitted by the power of the light source, a higher number represents a more efficient light source. From the economy (energy efficiency) considerations, luminous efficiency is an important parameter. Unit: lumen/Watt (LM/w). Incandescent lamp: 8-14lm/W single-ended fluorescent lamp: 55-80 lm/W HPS: 80-140 lm/W self ballasted fluorescent lamps: 50-70 lm/W Metal halide lamp: 60-90 lm/W halogen lamp: 15-20 lm/W LED30lm/W Illumination----units are received in the rogues ' Gallery of luminous flux is called illumination. If being received in the rogues ' Gallery of luminous flux per square meter to 1 (LM), the illumination is 1 (LX). Company: Lux (LX). 1 Lux (LX) equivalent is flux in the rogues ' gallery as 1 lumen per square meter (LM) illumination when. About 5000 strong summer sun surface illumination at noon LX, when winter weather ground illumination of about 2000 LX, a clear moonlit night of about 0.2 lx illuminance. Luminous flux----light emission and has been received by the human eye and is the flux of energy. Unit: lumen (LM), the symbol PHI,. Generally, higher the lamps of the same type of power, luminous flux is also bigger. ----Is the flux of the lamp average life maintenance rate provisions meet the State standards requirements and can continue to fire until 50% light reaches the single lamp life time (that is, 50% life of lamp failure). Light intensity----General, rays are in different directions and different intensity. Light source in a particular direction angle within the luminous flux emitted is called intensity. Unit: candela (CD). Brightness brightness----is the eye sees objects reflected light intensity in one direction. Unit: candela/square meter (CD/m2) ----Light color light color is actually a color temperature. Roughly divided into three categories: warm 5000K. Due to the spectral composition of light difference, so even if the color the same, light color can be different. ...

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