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Light quality for fashion

In the right light

Thanks to the targeted use of the special LED modules, we can now optimise the sales areas according to the merchandising requirements. Different collections require different light qualities. For example, the Brilliant light colour can make the smallest nuances of white surfaces visible in classic men's departments or in bridal fashion. Product-specific lighting qualities encourage purchasing decisions and raise the store's quality to a new level.

Full-spectrum LED

XPECTRUM, XAL's new daylight-like full-spectrum LEDs achieve excellent Ra and Re >(greater/equal to) 98 (or TM-30 rf), thus offering improved visual comfort. Thanks to this high colour fidelity, the human eye perceives products in the shop more easily and authentically. In addition, the strong, natural colours have an activating and emotional effect on the customers. The shopping experience has never been more appealing.

Top flexibility and light quality

Complementing the XPECTRUM LEDs, the special LED modules for fashion and food have proven their worth in staging goods in a sales-boosting manner. The flexibility that retail operators have to ideally match the light colour to the application is a major advantage. The custom colours offer product presentations of significantly higher quality than the 3000 K light colour that has been used across the board to date.

BRILLIANT 3050K CRI 91, R1-15 87

The custom light colour BRILLIANT has been developed for the clearest black and white display. BRILLIANT is the only light colour that can also display saturated violet. Thanks to the wide wavelength distribution in the spectrum, even the smallest nuances of white surfaces become visible under BRILLANT illumination. This is important for white shirts in business fashion, for example. Applications include the jewellery trade for silver/platinum with gemstones and diamonds, wedding fashion, underwear, and whites in fashion.

GALLERY 3100K CRI 92, R1-15 93

The custom light colour GALLERY delivers powerful colour representation. Red-yellow tones look especially impressive thanks to a slight oversaturation. GALLERY is the first choice where opulent colours are desired. Due to its robust colour representation, slightly yellowish whites are the trade-off. Application areas include the art trade and fashion departments with colour blocking presentations.

VOGUE 3250K CRI 95, R1-15 95

The custom light colour VOGUE has been developed for casual fashion. All colours are reproduced with strong colour saturation. Even black and white fabrics look compelling. Thanks to the increased colour saturation, VOGUE is ideal for all applications where strong colours are needed. Fields of application: from fashion retail to florists and plant lighting.

PASTRY 2320K CRI 82, R1-15 79

The custom light colour PASTRY has been developed for yellow-heavy products such as gold jewellery and bakery products. The colour point under the BBL (Black Body Line) makes pastries appear crisp and fresh from the oven. Wood colours look very homely under PASTRY lighting. Yellow dairy products are also ideal for this light colour.

Colour fading due to light

Since the introduction of LED light sources, it has been assumed that the risk of colour fading has largely been neutralised thanks to the elimination of UV wavelengths. Nevertheless, extended periods of illumination at high illuminance levels can visibly damage the colour. Generally, cool white light colours have a higher damage potential than warm white light colours. LED lamps' poorer colour rendering index indicates stronger potential for damage than a high colour rendering index because at a high value the intensity of red wavelengths is also significantly higher. The graph shows that there are only a few harmful blue wavelengths in this LED spectrum. Colour temperature ≤ 3000 K and CRI > 95 (such as with SASSO 60/100) is recommended for sensitive surfaces.

Measures to prevent colour fading

Increase illumination distance

  • Since the intensity of light decreases with the square of the distance, e.g., a doubling of the illumination distance has only 1/4 and a tripling of the distance only 1/9 of the original damage potential (photometric law of distance).

Dimming

  • Operate the luminaires at, e.g., only half the current
  • Use wide beam optics

Use lamps with low intensities of blue wavelengths

  • Use warm white light colours <3000 K with a high colour rendering index Ra>90
  • Do not use LEDs with a violet GaN chip such as PHILIPS Crisp White, Brilliant White, or SORAA.

Limit lighting duration

  • Textiles that are illuminated at >1000 lx should be changed weekly.