歐司朗標準光源L58W/950印刷機對色燈管
D50燈管的色溫為5000K被世界印刷業公認為標準色溫（ICC標準），通常運用在印刷或前置出版的領域。其條件恰與白天陽光下相近，色彩雖比較正常，但不容易發現黃墨的變化，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
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
OSRAML18W/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