To protect against moisture, dust, vibration, mechanical stress and other harmful environmental influences, we have been encapsulating our lights with transparent polyurethane for many years. Until now, it has not been possible to deliver exactly the same colour coordinates for indoor and outdoor applications, or for encapsulated and non-encapsulated light inserts.
We have always carefully evaluated the optical properties of our resin to ensure that our PU preserves the colour characteristics of the LED to the greatest degree possible. Nevertheless, when measuring the colour temperatures of the LEDs after encapsulation, we noticed that there is a shift in the colour temperature. It drifts from a warm colour coordinate to a cooler one. The higher the colour temperature of the LED before encapsulation, the greater the colour drift.
"We have developed a new, complementary encapsulation process especially for challenging projects that require, for example, a continuous line of light going from outdoors to indoors."
With our conventional PU encapsulation, the light is only emitted after penetrating the PU. This leads to the undesirable, clearly visible shift in colour coordinates. This is due to the change in the refractive index at the transition of the phosphorus layer into PU instead of into air as before. Our PremiumCoating is both simple and ingenious. Before PU encapsulation, we clip the new IP ProtectionCover lengthwise over our high-quality LED aluminium core boards. This minimalistic cover covers the LEDs and thereby prevents direct contact with the casting resin, or our PU. The refractive index and the colour coordinates remain unchanged.
The light inserts, encapsulated with FLASHAAR® PremiumCoating, are also optimised for combination with white-coloured covers. An absolutely homogeneous, uniform linear appearance, whether encapsulated or not, is guaranteed with this technology.
Our PremiumCoating is both simple and ingenious.