|
|
Q:各位大神,能帮我解释下这个吗,是LED路灯上面的
) f' W3 A T, P% r, EIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
, z* B2 Z; K( E+ r! `5 a" j6 q4 @of Solid-State Lighting Products+ X3 R2 }/ P) I9 E1 R
A:那些认证挺像西班牙AENOR的,第一个里面,CE里面的LVD 跟EMC可能有包括。
! C7 m) g2 c; X2 `第二个是 79流明光效测试报告。LM79整灯的吧。
7 B7 N' W+ G: x# iThe LED lighting industry is awash with confusing jargon and abbreviations. Here’s four for starters:- L70, LM79, LM80, TM21. So what do they mean?
' D! }/ T$ J8 s7 \8 A
9 W1 H) p& m$ p5 n+ dL70 is simply a measure of the time taken for a light source to degrade to 70% of its original output. It is usually measured in hours and usually refers to degradation of total light output ie lumens. As in “my new LED L70 is 123hours” (not a good result, must try harder).& N0 r5 Q6 {& |# f2 c0 e
9 m0 j7 l: M- \$ M6 Q O) GLM79, more properly referred to as “LM-79-08” is a Test Method authored by the Illuminating Engineering Society of North America (IESNA) titled “Approved Method: Electrical and Photometric Measurements of Solid-State Lighting Products”. This essentially defines a set of methodologies for laboratory testing of solid state luminaires and other light sources.
# t! R1 s% l+ @: A/ E: L" u0 M
( Q2 s$ m. O* s. U( l0 d$ xLM80, more properly referred to as “LM-80-08” is also a Test Method authored by the IESNA. It is titled “Approved Method: Measuring Lumen Maintenance of LED Light Sources”. In contrast to LM79 this defines a test method for long-term life testing of component-level LED devices.% Z6 k1 ?$ N. `$ K' g! `" P5 Q! b
( x# t0 n% O6 y$ T( j) DLM80 is not much use on its own and does not of itself define how to extrapolate lab-measured LED lifetime test data to enable future lifetime prediction. That’s where TM21 comes in. Full name “TM-21-11”, titled “Projecting Long Term Lumen Maintenance of LED Light Sources”, TM21 details how to extrapolate short-term LED component test data to predict future performance.
: f+ W0 U m- w5 xQ:寿命L-70是啥' Q7 d9 d+ Z4 B5 h8 `0 b% q9 _
A:维持70%光通量的寿命: u" H0 N3 {5 q R% s+ ^7 }" _5 ?
Q:谢谢。学到东西了
0 Y( L7 ]4 E/ J) Y- H. NA: 你这个要的就是一个IES报告,LM79测试报告里面就有,还有IEC里面的60598的测试报告,还有LM80报告,这个报告里面包含了TM21报告的" |+ U3 \" J' G0 y$ ~0 v$ l
Q:明白了
* n% I2 D4 c/ W% } |
|