飛利浦d50燈管的色溫為5000k被世界印刷業(yè)*為標準色溫（icc標準），通常運用在印刷或前置出版的領(lǐng)域。其條件恰與白天陽光下相近，色彩雖比較正常，但不容易發(fā)現(xiàn)黃墨的變化，故較適合于觀看原稿。其品牌有：pihlips，通用ge，osram，格林達 麥克貝斯 gretagmacbeth，gti等。產(chǎn)品符合標準化組織（iso）在2000年對標準觀察環(huán)境和標準光源做出了規(guī)定，即iso3664:2000標準。
gretagmacbeth f20t12/50 5000k 20w made in canada
gretagmacbeth f40t12/50 5000k 20w made in canada
philips tl-d 90 de luxe 18w/950 made in holland
philips tl-d 90 de luxe 36w/950 made in holland
philips tl-d 90 graphica 18w/950 made in holland
philips tl-d 90 graphica 36w/950 made in holland
osram l18w/950 color proof daylight made in germany
osram l36w/950 color proof daylight made in germany
just daylight 5000 prographic 36w made in holland
just daylight 5000 prographic 58w made in holland
gti graphiclite 100 f17t8/gl50 d5000 color viewing lamp
gti graphiclite 100 f25t8/gl50 d5000 color viewing lamp
gti graphiclite 100 f32t8/gl50 d5000 color viewing lamp
ge ecolux f20t12-c50-eco chroma 50 20w usa