Shenzhen ThreeNH Technology Co., Ltd.
Shenzhen ThreeNH Technology Co., Ltd Since 1998, 3nh has been a professional factory with 20 years experience on color and glossy measurement industry.
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Fluorescent Tube Light Philips TL-D 18W BLB UV Lamps MADE IN POLAND 60cm with Glass Material
Philips TL-D 18W BLB UV Lamps 60cm
For color matching
Used in Color Light Box
It is suitable for using in our TILO brand color light box model P60(6), T60(5), T60(4), P60+, T60+, p120.
About Light Sources:
| Light Source | Color Light Box Application | Color temperature(k) | Power(W) |
| D65 | International standard Artificial Daylight | 6500 | 18 |
| TL84 | Applied to stores in Europe, Japan and China | 4000 | 18 |
| CWF | (Cool White Fluorescent)American Standard | 4150 | 18 |
| F | "Sun-setting Light Yellow" incandescent light source(imitation of sunset) | 2700 | 40 |
| UV | Viewing under ultraviolet light to detect and evaluate optical brighteners or fluorescent pigments | Wavelength:365nm | 20 |
| TL83 | Applied to stores in Europe | 3000 | 18 |
CIE illuminants
The International Commission on Illumination (usually abbreviated CIE for its French name) is the body responsible for publishing all of the well-known standard illuminants. Each of these is known by a letter or by a letter-number combination.
Illuminants A, B, and C were introduced in 1931, with the intention of respectively representing average incandescent light, direct sunlight, and average daylight. Illuminants D represent phases of daylight, Illuminant E is the equal-energy illuminant, while Illuminants F represent fluorescent lamps of various composition.
There are instructions on how to experimentally produce light sources ("standard sources") corresponding to the older illuminants. For the relatively newer ones (such as series D), experimenters are left to measure to profiles of their sources and compare them to the published spectra:
At present no artificial source is recommended to realize CIE standard illuminant D65 or any other illuminant D of different CCT. It is hoped that new developments in light sources and filters will eventually offer sufficient basis for a CIE recommendation.
— CIE, Technical Report (2004) Colorimetry, 3rd ed., Publication 15:2004, CIE Central Bureau, Vienna
Nevertheless, they do provide a measure, called the Metamerism Index, to assess the quality of daylight simulators. The Metamerism Index tests how well five sets of metameric samples match under the test and reference illuminant. In a manner similar to the color rendering index, the average difference between the metamers is calculated.
