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Content archived on 2024-06-18

High Efficiency and Rendered Colour Using LED Solid State Lighting

Objective

"Lighting accounts for 30% of all electricity usage in offices, homes, transport systems and retail. It is expected to be revolutionised by the widespread introduction of LED solid state technology. However, LED technology has some major problems to overcome on the delivered efficiency of multi-LED lights, cost, and the quality of the light colour produced.

HERCULES will produce solutions for LED lighting for a range of applications. It will build on a successfully demonstrated concept that combines the light from different LED sources to produce near perfect colour rendition at colour temperatures as low as 2500K. HERCULES will provide the normal benefits of LED lighting – high electrical energy to light conversion efficiency (reducing energy consumption), instant start-up and efficient dimmability, but will also allow tuneable colour rendering for applications such as food retailing.

It is essential that light sources produce high quality colour rendition, which has proved critical to the health and productivity of workers. High efficiency LEDs have very poor colour rendering and current approaches use multiple phosphors on each LED to generate a poor typically “blue rich” approximation to natural light. These phosphors can seriously reduce the efficiency of the LED, so more LEDs are required to achieve the light ouput. In a compact light source this has the effect of increasing the temperature of the LEDs, which has a very negative feedback as their efficiency decreases rapidly with temperature. The HERCULES solution will overcome this serious limitation.

The key developments in this project will be:
• Characterisation and selection of suitable high efficiency LEDs
• Novel electronic driver design
• Optical design for several form factors, especially to de-image LEDs
• Low cost injection moulding tool making technique for optical finish
• Precision injection moulding of optical elements
• Novel luminaire design for indoor/outdoor/specialist applications"

Fields of science (EuroSciVoc)

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Programme(s)

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Topic(s)

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Call for proposal

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FP7-SME-2011
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Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

BSG-SME - Research for SMEs

Coordinator

BRANDON MEDICAL COMPANY LIMITED
EU contribution
€ 488 896,53
Address
HOLME WELL ROAD MIDDLETON
LS10 4TQ LEEDS
United Kingdom

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Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

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Participants (6)

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