Lighting. Sunday , May 14th , 2017 - 17:19:33 PM
The brightness of the LED is measured by the luminous intensity. The luminous intensity refers to the luminous intensity in the direction of the normal (for the cylindrical tube), that is, the luminous flux emitted by the unit solid angle, in candlelight (Candela, cd). As the general luminous intensity of LED is small, so the luminous intensity commonly used in Mendra (mcd) as a unit. In general, the light source will be different directions to different intensity of its luminous flux, in a specific direction of the unit angle generated by the visible light radiation intensity is called light intensity, referred to as axial brightness.
LED manufacturers expect LED life to reach 100,000 hours MTBF (The average time between failures, the standard used by traditional lighting manufacturers to measure the life of the light source). But, like all basic light sources, like LED The luminous flux also fades with time. So although the LED light-emitting time can be very long, MTBF is not the only consideration to determine the service life. The attenuation of LED lumens is affected by many environmental conditions such as ambient temperature, humidity and ventilation. Lumen fading is also affected by control, thermal management, current levels and many other electrical design considerations (cited above for US CK).
They can be used to create a particular mood or atmosphere. Some say antique and old-fashioned; others portray a more modern and distinctive look. Candle wall sconces and lanterns can be used to update a room instantly and inexpensively. Use candle wall sconces and lanterns to enhance a picture or mirror or display by its self. They can be decorative pieces and even works of art. Candle wall sconces and lanterns can be very elaborate and beautifully designed.
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