|
|
Q:各位大神，能帮我解释下这个吗，是LED路灯上面的1 y t, Z6 c. P" A! c! r+ u* u" i2 U
IESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
4 L$ c& t7 n5 Z: ?, i4 l2 vof Solid-State Lighting Products7 C# y# e2 T/ ]; u
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。
) u% ?: H3 }7 w; Z. E! I第二个是 79流明光效测试报告。LM79整灯的吧。9 Z3 L3 t3 b- t1 g
The LED lighting industry is awash with confusing jargon and abbreviations. Here’s four for starters:- L70, LM79, LM80, TM21. So what do they mean?, e J& E) P, h+ C9 O3 _$ |7 Z4 o
9 o/ M$ u( H( C6 Z, W, c, vL70 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).! F! G( N! c6 }; r6 x+ I2 b
7 { _; r7 p$ `1 b# FLM79, 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.4 K# l K* l5 |; b9 D
2 T) F1 `( H, j0 ?+ A# l% C5 [' {4 z
LM80, 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.
9 C$ {/ D v2 A, w+ S$ e Z5 N) S
( s4 d) R( _5 k9 JLM80 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.
; a8 I4 d z. o: o6 @Q:寿命L-70是啥5 K' |% m' H* r7 _; n
A:维持70%光通量的寿命1 L9 Z0 g4 I7 ]; U1 b; Q! v7 S
Q:谢谢。学到东西了
' ~2 [8 c- {- `) ~' w0 j9 }A: 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
$ m0 `) i8 m* S8 f2 w7 C, l" mQ:明白了: N& D( v! ~/ x- x" f# n
|
|
发表于 2018-6-29 10:47:25
|手机版|LED盘
( 粤ICP备18067418号 )