TEK LIGHTING TECHNOLOGY CO.,LTD

For LED light sources, LM-80 defines  lumen - maintenance  life as “the elapsed operating time at which the specified percentage of the  lumen depreciation  or  lumen maintenance  is reached, expressed in hours.”  Rated Lumen Maintenance Life: Rated lumen-maintenance life is measured in hours with associated percentage of light output, noted as L p . In other words, L 70  of 30,000 hours means that the tested LEDs produce 70% of the initial light output at 30,000 hours. If an LED has L 50  of 30,000 hours, its lumen output decays faster than one with L 70  of 30,000 hours. LM80: LM-80 is a testing procedure on the lifespan of LED light source. It’s an IESNA document that the manufacturers must follow to test the lifespan of their LEDs. Basically it tells you how the LEDs must be tested and what information must be included in the LED lifespan report.

The LED lighting China--Famous scenic spots and historical sites lighting decoration The old building more than thousand years of history, TEK Lighting LED lights are widely used in various construction contours. And discussed the harmony between new building architecture and primary architecture style from the buildings height, style style s harmony, colorific corresponding and lamp ornaments arrangement etc.