Proposal for High Color Rendering, Natural-light LED Light Units | CHigh Color Rendering, Natural-light LED Light Units for Industrial Use

CCS's High Color Rendering, Natural-light LED Light Units use LEDs that were specially developed by CCS to reproduce natural-light colors close to those of sunlight. At Ra98, we have achieved one of the world's highest general color rendering index (CRI), which tells how close a light is to sunlight. Also, even when the light color is changed, CCS's technology makes it possible to keep Ra95 or above. In addition to the high general CRI, CCS has also achieved high special CRI, such as those for primary colors and flesh tones. Specifically for red (R9), yellow (R10), and blue (R12), you can see colors rendered to a level that was not possible for previous light sources.^*2

*1) According to CCS investigation in July 2017.
*2) A color rendering index is used to evaluate the ability to render each of 15 colors against a standard value of 100. The general color rendering index, Ra, is the average of the values for R1 to R8. The special color rendering indexes, Ri, are the results of individual evaluations of colors R1 to R15 (with priority given to evaluation of R9 to R15). (Measurements were made according to JIS Z 8726, Method of Specifying Colour Rendering. Properties of Light Sources.)

High color rendering, natural-light LEDs produce a smooth continuous spectral distribution across all wavelengths, just like the spectral distribution of sunlight. While normal white LEDs and fluorescent lights have some wavelength regions that are very strong or even missing, CCS's high color rendering LEDs cover almost the entire range of visible light.

Color rendering expresses the affect of a light source such as a light on the appearance of the colors of an object. The color rendering properties express the properties of the appearance of the object.
Normally, a light source with good light rendering properties can illuminate an object without changing the colors of the object.
In Japan, the JIS standards define a color rendering index (Ra) with a maximum value of 100 to numerically express how objects appear.
The higher the value is, the closer the colors of the object appear to the natural colors.

Comparison of Color Rendering Properties

With CCS's High Color Rendering, Natural-light LED Light Units, the correlated color temperature, spectral distribution, and color rendering index can be tuned to fit customer needs.
We can provide the ideal LED Light Units with our complete manufacturing system from LED development through final product manufacturing.

Correlated color temperature illuminant A (2,856 K)
Correlated color temperature illuminant D65 (6,504 K)
Correlated color temperature of 5,500 K
Correlated color temperature of 2,700 or 5,000 K
Spectral distribution with lower green wavelength
Light Units with less fluctuations in color

High Color Rendering, Natural-light LEDs Developed by CCS

Examples of Tuning the Correlated Color Temperature, Spectral Distribution, and General Color Rendering Index

Since being founded in 1993, CCS has become a leading manufacturer of LED lights for industrial inspections with a top market share both in Japan and around the world. CCS has designed, developed, and produced over 10,000 Custom Light Units to provide the ideal lighting for each customer's needs.
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