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AB178 Fiches technique(PDF) 3 Page - Lumileds Lighting Company

No de pièce AB178
Description  Assembly and Handling Information
Download  12 Pages
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Fabricant  LUMILEDS [Lumileds Lighting Company]
Site Internet  http://www.luxeon.com
Logo LUMILEDS - Lumileds Lighting Company

AB178 Fiches technique(HTML) 3 Page - Lumileds Lighting Company

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AB178 LUXEON UV U Line Application Brief 20170620 ©2017 Lumileds Holding B.V. All rights reserved.
3
1. Component
1.1 Description
The LUXEON UV U Line emitter is an ultra-compact, surface mount, high-power ultraviolet (UV) and violet LED with peak
wavelength ranging from 380nm to 420nm. Each LUXEON UV U Line emitter consists of a high brightness InGaN chip on a
ceramic substrate. The ceramic substrate provides mechanical support and provides a thermal path from the LED chip to
the bottom of the emitter (Figure 1). An interconnect layer electrically connects the LED chip to cathode and anode pads of
equal size on the bottom of the ceramic substrate.
All LUXEON UV U Line emitters contain a transient voltage suppressor (TVS) chip which protects the LED chip against
electrostatic discharge (ESD) events.
As with any other UV light sources, proper safety precautions must be followed to protect eyes and skin from UV exposure
when operating these light sources. A UV caution label is attached to each reel shipped.
Figure 1. 3D renditions of a representative of LUXEON UV U Line. Top view (left) and bottom view (right).
1.2 Optical Center and Property
The theoretical optical centers of LUXEON UV U Line emitters are shown in Figure 2.
Note that when designing secondary optics for LUXEON UV U Line emitters, the lens material selected should be able to
withstand UV exposure and minimize light absorption at the wavelength chosen. For example, a lens which is made of
untreated standard grade polycarbonate (PC) absorbs UV light and turns yellowish over time, which, in turn, reduces the
light output performance of the whole LED system while a quartz glass will not absorb less UV and last much longer than
polymeric lens. Lumileds recommends that customers discuss the impact of prolonged exposure to UV light with lens
suppliers when selecting appropriate lens materials.
The LED chip used in the LUXEON UV U Line is a five-sided emitter. Consequently, there is some minimal side light. The
rayset files are provided on lumileds .com for optical simulation.
Figure 2. The optical centers of the LUXEON UV U Line emitter (in mm).


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