Undomed colour LEDs

16 May 2018 Opto-Electronics

New from Lumileds is the Luxeon CZ Colour Line, a product line optimised to meet the recent market trend of colour tuning fixtures with narrow beam angles and maximum ‘punch.’ The range consists of 21 LED colour options including 13 colour and 8 white LEDs.

In a narrow beam system, Lumileds claims the intensity of the light from Luxeon CZ can be as much as 50% higher compared to other undomed LEDs. The intensity of each colour is similar, ensuring a consistent beam width and minimising halos when colour mixing.

The product line additionally eliminates crosstalk, ensuring a true colour point when LEDs are packed closely together. Crosstalk can happen when direct colour LEDs are closely spaced with phosphor converted LEDs. The photons from the direct colours can excite the phosphor in the surrounding phosphor converted LEDs, making it appear as if the phosphor converted LEDs are on, when in reality only the direct colour LED is illuminated. The Luxeon CZ Colour Line ensures a true colour point in compact designs and is especially suited to architectural lighting, entertainment lighting, dimmable lamps and fixtures, and emergency vehicle lighting applications.

In addition, Luxeon CZ consists of the same robust buildings blocks as the award-winning Luxeon C Colour Line. All Luxeon CZ and Luxeon C LEDs feature an identical focal length, an approach that leads to superior colour mixing in all applications. To accelerate time to market and simplify designs, Luxeon CZ and Luxeon C are designed in the same footprint and are also hot tested at 85°C to ensure performance in real world conditions.

A low thermal resistance of 3,2°C/W helps reduce the size of heatsinks for the most compact lamps or fixtures. A low thermal resistance is especially beneficial in densely packed applications because it significantly helps with thermal management.

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