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Home Electronics News

OMC’s new high brightness purple LED brings greater flexibility for designers

Electronics Maker by Electronics Maker
July 7, 2018
in Electronics News
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Easy to drive Active Diffuser Technology™; compact footprint; suits backlighting, displays,   status indication, signalling, mood lighting and more

OMC_new high brightness purple LED PR Pic July_FinalJuly 2018…OMC, the pioneer in optoelectronics design & manufacture, has launched a new high brightness purple surface-mount LED lamp featuring the company’s proprietary Active Diffuser Technology™, which produces a far richer and more efficient output than traditional single-wavelength devices. The vibrant output and ease of driving of the new purple LED SMD lamp makes it ideal for applications such as backlighting, mood-lighting, displays and status indication on items such as front panels and keypads, as well as signalling and industrial electronics. Designated LPRM3268X3, this new SMD lamp requires very low current, has a compact footprint of only 3.2mm by 2.8mm, and a depth of 1.9mm, with the industry-standard PLCC package.

OMC’s Active Diffuser Technology combines a blue LED chip with coloured phosphor-based diffuser media in order to manipulate the light wavelength and give the desired output spectrum.  The device efficiency is comparable to blue gallium nitride-based LEDs, which allows other colours to be produced at higher efficiencies than typically achieved when using different chip technologies. As the output consists of a wide spread of light wavelengths rather than a narrow peak, the result is a more intense, richer colour than traditional LEDs.  Another benefit of active diffuser technology is that it delivers a more homogenous output, eliminating the wire-bond and lead-frame shadows commonly seen in the beam pattern of standard LEDs.

Applying this approach to generate purple light greatly simplifies the task of incorporating purple illumination into a design. Previously, the most common approaches to generating purple light from an LED was to mix red and blue light from a multichip device, which adds complexity and cost to a design and requires more sophisticated drive circuitry. As the LPRM3268X3 device contains only a single LED chip, it can be used in the same circuit layout as other standard LED colours, simplifying designs. Other approaches to generating purple light with LEDs involve the use of a 400nm LED chip, which is typically less efficient and incorporates a significant UV component to the output, which can give rise to its own considerations.

OMC’s Commercial Director, William Heath comments: “Our high output colour LED range with Active Diffuser Technology is a newer, more efficient approach to producing coloured LEDs. The addition of a rich purple LED to the line-up broadens the colour choice available to designers and is certain to help enhance product appearance.”

 

Tags: Discrete Optoelectronic Components; and Semiconductor (LED) Lighting.
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