{"id":14646,"date":"2013-06-25T19:09:15","date_gmt":"2013-06-25T23:09:15","guid":{"rendered":"http:\/\/www.olino.org\/us\/?p=14646"},"modified":"2013-06-25T19:09:15","modified_gmt":"2013-06-25T23:09:15","slug":"lumitext-endurance-test-20x-led-modules-lumistring-hlc2s","status":"publish","type":"post","link":"https:\/\/olino.org\/blog\/us\/articles\/2013\/06\/25\/lumitext-endurance-test-20x-led-modules-lumistring-hlc2s\/","title":{"rendered":"LumitexT – Endurance test 20x led modules LumiString HLC2S"},"content":{"rendered":"

\"\"<\/a>LumitexT has put a set of 20 ledmodules in endurance test.<\/p>\n

This article presents the endurance test results. The test has run 6.000 hours and shows a constant light output.<\/p>\n

See here<\/a> the results of the 0-hours test.<\/p>\n

<\/p>\n

Summary Measurement Data<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n
parameter<\/th>\ninitially<\/th>\nafter 6000 hrs endurance<\/th>\n<\/tr>\n
Color Temperature<\/td>\n6536 K<\/td>\n6528 K<\/td>\n<\/tr>\n
Luminous Intensity Iv<\/sub><\/td>\n227.2 Cd<\/td>\n219.5 Cd<\/td>\n<\/tr>\n
Beam Angle<\/td>\n121 deg<\/td>\n118 deg<\/td>\n<\/tr>\n
Power P<\/td>\n11.4 W<\/td>\n11.4 W<\/td>\n<\/tr>\n
Power Factor<\/a><\/td>\n0.88<\/td>\n0.89<\/td>\n<\/tr>\n
Luminous Flux<\/td>\n692 lm<\/td>\n660 lm<\/td>\n<\/tr>\n
Luminous Efficacy<\/td>\n61 lm\/W<\/td>\n58 lm\/W<\/td>\n<\/tr>\n
CRI_Ra<\/td>\n75<\/td>\n76<\/td>\n<\/tr>\n
Coordinates Chromaticity Diagram<\/td>\nx=0.3128 and y=0.3269<\/td>\nx=0.3129 and y=0.3263<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Test duration and test environment<\/h3>\n

The lamp went into endurance test on 5 Sept 2012 until 18 May 2013.<\/p>\n

During this period of time the lamp has seen the following ambient temperature and ambient relative humidity.<\/p>\n

<\/em><\/p>\n

\"\"<\/a><\/em><\/p>\n

Sept 2012 – Nov 2012.<\/em><\/p>\n

\"\"<\/a><\/em><\/p>\n

Nov 2012 – March 2013<\/p>\n

The ambient temperature close to the lamp varied between 8-27 deg C and the relative humidity between 25-73 %. No ambient data is available for months April, May, due to a problem with low battery for the temperature and RH sensor. However the ranges given will include the values for these months as well.<\/p>\n

Variation of lamp parameters<\/h3>\n

\"\"<\/a><\/p>\n

The variation of the lamp parameters during the endurance test.<\/em><\/p>\n

See the explanation on the OliNo site<\/a> for more on the test method.<\/p>\n

No extrapolation to the 70 % level of the luminous flux is possible when using the illuminance as a measure for the luminous flux. The illuminance does not decrease after 1,000 hours.<\/p>\n

There is a small variation in illuminance, probably due to the tape getting loose behind some modules and that resulted in a shift of their angular position. Afterwards these modules were again put straight.<\/p>\n

\"\"<\/a><\/p>\n

Extrapolation of the illuminance.<\/em><\/p>\n

See the explanation on the OliNo site<\/a> for more explanation and the link to the ASSIST document for the method of extrapolation.<\/p>\n

The extrapolation of this data until 70 % of illuminance is reached could not be done as explained before.<\/p>\n

Color change<\/h3>\n

The color change (change in color coordinates) is measured during the test period.<\/p>\n

\"\"<\/a><\/p>\n

Change in color coordinates during the endurance test.<\/em><\/p>\n

The color coordinates indicated with the red cross-hairs are the coordinates after 1000 burn hours. These are taken as reference. After 6,000 hours the color point remains almost inside an 1-step McAdams ellipse. This is a very good result for constancy of color.<\/p>\n","protected":false},"excerpt":{"rendered":"

LumitexT has put a set of 20 ledmodules in endurance test. This article presents the endurance test results. The test has run 6.000 hours and shows a constant light output. See here the results of the 0-hours test.<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[32],"tags":[],"_links":{"self":[{"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/posts\/14646"}],"collection":[{"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/comments?post=14646"}],"version-history":[{"count":2,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/posts\/14646\/revisions"}],"predecessor-version":[{"id":14649,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/posts\/14646\/revisions\/14649"}],"wp:attachment":[{"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/media?parent=14646"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/categories?post=14646"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/tags?post=14646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}