INSIDE WAVEGUIDE TECHNOLOGY Inside the innovation
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ward-winning lighting company is leading the way when it comes to slashing energy usage and lowering carbon emissions. MHA Lighting, based in Greater Manchester, uses two-thirds of the energy of its closest competitors and has developed bespoke light fittings for a variety of clients from both public and private sectors.
But how does the technology work?
MHA has developed a unique approach that has created a whole new avenue for the use of solid-state lighting in new areas and applications, an avenue which other LED lighting manufactures are failing to address with the same level of efficiency.
By using patented ‘rod with holes’ technology, MHA is the only known LED manufacturer to shine light sideways into an encapsulation, not directly outwards. This avoids direct eye-contact and provides a safe and efficient light output.
Using acrylic rods to focus and control the light output, MHA are able to reduce the number of LEDs required is reduced. This means the products can use high power LEDs, draw low currents and have no need to diffuse the output. The flexibility of MHA’s award-winning patented technology allows them to replace fluorescent fittings and achieve BS and LG standards.
MHA Lighting Ltd Tel: 01942 887 400
A more in-depth look MHA uses a waveguide technology, which works by emitting LED sideways into acrylic rods. This is achieved using specially-designed, linear, printed circuit boards in which the sections containing the LEDs are bent at 90˚ from the main sections. The PCBs can be interlocked so that two LEDs on vertical sections can sit back-to-back. MHA’s approach to luminaires relies on reflecting the light internally and using the optical properties of the acrylic rod before the light is emitted in a uniform manner.
The LEDs are arranged to shine their light sideways within the optic so that only a small proportion of the light is emitted directly from the fitting. The remaining light waves are guided and then subsequently reflected out.
The LED-containing extensions of the PCBs are then inserted into matching holes in an acrylic rod. The LEDs emit light sideways into the rod. The emission from the rod is controlled by a reflective coating which is designed according to the desired light distribution. The effect is that light is emitted from the length of the rod in a uniform manner. The technology overcomes the problem of directionality, achieving a light distribution of such high uniformity that it is better than traditional fittings. MHA’s luminaires create a wide, rugby-ball shape of light to provide exceptional uniformity, which for most internal and external applications, is vitally important.
Web:
www.mhalighting.co.uk enter 800
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