Components | LEDs | Color LEDs | Special Applications | Jul 09, 2018

OMC’s New High Brightness Purple LED for Greater Design Flexibility

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 400 nm 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.”

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About OMC:

Founded in the mid-1980s as The Fibre-Data Group, OMC is one of the longest-established specialist manufacturers of optoelectronics in Europe, headquartered in Cornwall, UK. Accredited to ISO 9001:2008, ISO 14001:2004 and OHSAS 18001:2007 and winners of the UK National Electronic Component Award for Innovation, OMC is a pioneer in the development, manufacture and application of cutting-edge LED and fibre-optic technologies for a wide range of industries and companies worldwide, and places a major focus on research and development, engineering and innovation. OMC’s commitment to the highest standards of quality, performance and engineering support is recognised within the industry. OMC has four key manufacturing divisions: Fibre Optics; LED Backlights and Optical Mouldings; Discrete Optoelectronic Components; and Semiconductor (LED) Lighting.