Index of Natural and Artifical Light

Tn
[Kelvin]
1000000/Tn
[Mired]
Illuminant, natureSource, simulation
> 5300 K: “Daylight white” natural lighting
13 500
to
27 000
Approx. 74 to 37North blue sky
9 300107Original white point of CRT screens
9 000
to
12 000
111 to 83“The blue hour”Only perceptible with eyes used to warm white
8 500125Lighting in fog
7504
(“7500”)
133D75 – North sky daylightPredefined in just LED cabinets with Ra 99
6774148C – Average daylightStandard light A lamp with double Davis-Gibson copper sulfate liquid filter (disadvantage: insufficient UV content); C is the white point in NTSC televsion
6504
(“6500”)
154D65 – Noon daylight, indirect sunlight at noon. White point illuminant in sRCG and AdobeRGB, as well as in PAL and SECAM televisionF7 UV-rich broad band daylight fluorescent lamp. e.g. Just Normlicht Color Control Daylight 6500 with Ra 98;
– Backlight in LCD monitors;
– Predefined illuminant in Just LED cabinets with Ra 99
6430155F1 Standard daylight fluorescent lamp
different references with Ra 76
6350156F1 UV-weak daylight fluorescent lamp
different references with Ra 72
6000167Sun at the zenitXe Xenon high-pressure lamp e.g. for earlier reproduction technology
5503
(“5500”)
182D55 – Mid-morning daylightElectronic flash devices designed for daylight film and digital photography
5454183E – equi-energy spectrum
x=y=1/3
Theoretical illuminant as geometric center point of color triangle CIExyY
5300 to 3300 K: “Neutral or cool white range”, objective lighting
5003
(“5000”)
200D50 – horizon daylight, standard lighting for the printing industryF8 Broadband fluorescent lamp reference: Philips/Osram Sylvania F40Design 50 with Ra 90 to 95; leading standard lighting for the printing industry from Just Normlicht (daylight proGraphic ISO 3664:2009 with Ra 98);
– F10 Narrow tri-band fluorescent lamp
reference: Philips TL85 and Ultralume 50 with Ra 81;
– Predefined illuminant in Just LED cabinets with Ra 99 (with and without UV-A content)
4874204B – “Beck light”, direct sunlight at noon, replaced as standard by D50– Standard A lamp with Davis-Gibson copper sulfate liquid filter;
– Beck carbon arc lamps (previously standard for spectroscopy measuring light and cinema projection lamps due to their broad and even spectrum)
4700213Sun at elevation 20°Reproduction technology: Xenon low-pressure lamp
4230236Hard cool whiteF2 (F, F02) Cool white fluorescent lamp (Fcw, CWF, CWF2), different references with Ra 64
4150241Soft cool white– F9 Broadband fluorescent lamp, reference: Philips Cool White Deluxe with Ra 90;
– F6 Semi-broadband fluorescent lamp
(tube bande semi-large fluorescente),
reference: Philips Lite White with Ra 59
4100244MoonlightReproduction technology: Xenon arc lamp
4000250Sun at elevation 10°-F11 Narrow tri-band fluorescent lamp, reference: “Point of Sale Lamp” TL84 Ultralume 40 and SP41 with Ra 83;
– Predefined illuminant in Just LED cabinets with Ra 99
3800263Photo flash lamp
3450290F3 “White” standard fluorescent lamp,
different references with Ra 57
3400294Evening sun shortly before duskTungsten halogen photo studio lamp, type A/S
3300303Modern cinema projection lamp
3300 K: “Warm white range”, cozy lighting atmosphere
3200312Tungsten halogen photo studio lamp,
B-type warm white tube
3100323(designed for artificial light film)500-W opal lamp
3000333Warm white– F12 Narrow tri-band fluorescent lamp,
reference: Philips TL83 Ultralume 30
with Ra 83);
– 200-W incandescent lamp with Ra < 50
2490402Warm whiteF4 “Warm white” standard fluorescent lamp,
different references with Ra 51
2856350A – “Artificial light”– Gas-filled tungsten lamp,
– Predefined in Just LED cabinets with Ra 99
< 3300 K: “Warm white range”, cozy lighting atmosphere
2800357100W incandescent lamp
268027360W incandescent lamp
2360424G – “glow-lamp light”Vacuum tungsten lamp
220045540W incandescent lamp
2000500SunsetSodium vapor lamp
1900526P – “petrol lamp light”Oil lamp