T Catalogue 2010

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The T range comprises strip modules and module chains with different lengths and luminous fluxes for accenting lines and edges and for side injection. The round and rectangular T modules are designed for surface accent lighting and for use in indicator and orientation lights. They are available in various sizes and with various luminous flux values. Module chains are ideal substitutes for classic neon lighting in illuminated advertising applications. Tridonic can therefore cover all the various tasks that require colour effects or dynamic colour sequences. The varied selection of T modules from Tridonic, equipped with highly efficient high-intensity light-emitting diodes in white, are now being used more and more in general lighting applications. New technology has been used to achieve considerable improvements in the quality of LED light and its luminous efficacy. Tridonic uses high-quality phosphors for colour conversion, a process in which white light is produced from blue LED. The use of chemically modified barium orthosilicates with green to reddish-orange light enables specific colour temperatures to be achieved, colour tolerance to be reduced and colour rendering to be improved. Tight monitoring of the coating process is extremely important to ensure reproducibility of the colour conversion process and to reduce the tolerance range considerably. The result is excellent white light homogeneity with very narrow tolerances, a colour rendering index ( CRI ) R a in excess of 80 for all colour temperatures, constant colour location of the emitted white light and a life of more than 50,000 hours of operation. 16 www.tridonic.com T Catalogue 2010
Y CIE Colour Space Chromaticity Diagram Assembly of LED Colour 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 MacAdam ellipse yellow Planckian curve 0 0.1 0.2 0.3 0.4 X MacAdam ellipse daylight white (6,500 K) 0.5 0.6 0.7 0.8 Yellow A B Daylight white A B Relative intensity (%) Relative intensity (%) 100 80 60 40 20 0 400 100 80 60 40 20 0 400 440 480 520 560 600 Wavelength (nm) A A 440 480 520 560 600 Wavelength (nm) B B 640 680 640 680 Colours have a special influence on brand recognition. It is hardly surprising then that great importance is attached to this aspect. The most frequently used method for assessing colour rendering is the MacAdam ellipse. Colour differences can be detected or not, depending on the precision with which the colour quality is specified. The picture shows the colour locations of the MacAdam ellipse for the colours yellow and daylight white in the CIE chromaticity diagram of 1931. In addition to the colour location in the CIE chromaticity diagram, the intensity of the die and of the glob-top ( colour conversion layer ) is shown. The Planckian curve defines an area of the chromaticity diagram in which there is no discernible colour difference for the human eye in terms of white light. This phenomenon is used to define the phosphor to ensure the optimum white light impression. This means that T modules are available with defined colour temperatures of 3,000 K ( warm white ), 4,200 K ( neutral white ) and 6,500 K ( daylight white ) to provide light of impressive uniformity. New encapsulation materials with reduced yellowing are being used to achieve higher luminances and therefore outstanding luminous flux stability. The 140° wide-beam characteristic also helps to ensure homogeneous illumination with a small mounting depth and reduced number of light sources. In addition, the optimised thermal management of chip-on-board technology reduces the temperature of the light-emitting diodes and therefore improves their reliability. The wide range of high-intensity LED modules in white, colour or RGB underlines the power of innovation of Tridonic in this pioneering sector. T Catalogue 2010 www.tridonic.com 17
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T Catalogue 2010

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