PolyU develops the most energy-efficient LED filament lamps

In 2015, PolyU Micro Fund awarded a seed fund of HK$100,000 to a student team for their great ideas about the breakthrough technology of Light Emitting Diode (LDE) lighting. More impressive outcomes were achieved this year as these PolyU students and a research team of State Key Laboratory of Ultra-precision Machining Technology (Partner Laboratory in The Hong Kong Polytechnic University) jointly developed the most energy-efficient LED filament technology with a luminous efficacy of 129lm/W, which represents 1.5 times the efficacy of traditional LED lamps.

The traditional LED lighting is energy-saving and has a long lifetime. But limitations exist including high production cost and narrow beam angle. The new filament technology developed by PolyU has achieved breakthroughs on top of the traditional LED and is equipped with following advantages:

• High energy efficiency: Enables to reduce carbon dioxide emission by 30% compared with traditional LED lamp with the same lumen and conditions.
• Comparable lifetime and lower production cost: Enables an expected lifetime of 50,000 hours, with only half of the production cost of traditional LED lamps.
• Wide beam angle: 300-degree, parallels to that of incandescent bulb;
• Comparably high colour rendering index (CRI): Enables original colour projection of objects as if they are in natural light;
• Less UV light emission; and
• More environmentally friendly: Absence of harmful chemicals, and consists of less electronic components, and 80% of recyclable materials.

The prototype design of this new technology is completed. You may have an opportunity to purchase the final product at market in the near future.