A Chinese-American scientist, inventor, and practitioner, dedicated to high-efficiency, energy-saving lighting for over 30 years. He is not only the founder of LED Super Quantum Theory but also an innovator in Super Quantum Technology and a steadfast advocate for the Super Quantum industry.
Born in Shanghai in 1952, he graduated from Shanghai Tongji University in 1982 with a major in Electrical Lighting. As a founder of China's electrical lighting discipline and a renowned lighting expert, he went to the University of Maryland in the USA in 1985 for advanced studies and work. In 1989, he founded the ITI Science Research Center in Maryland, USA, where he has served as Director ever since, focusing on technical research and product development in the field of LED general lighting. He is the inventor of eDVA TECH (Edva Super Quantum Technology); Formerly served as the U.S. EPA Green Lighting Special Envoy to China; Currently serves as a member of the Semiconductor Lighting Technology Application Committee of the China Illuminating Engineering Society and President of the Strait (Liancheng) Optoelectronic Industry Technology Research Institute. He participated in the formulation of the U.S. Energy Star standards, led multiple special environmental research projects funded by the UN and the U.S. government, and received special commendations from the University of Maryland and the U.S. government, along with feature coverage by CNN.
Utilizing Super Quantum core technology and iterative innovation theory, William Yu successfully developed the Super Quantum LED bulb, hailed by Academician Xue Yongqi of the Chinese Academy of Sciences as "The World's Premier Lamp". "Bringing Super Quantum healthy, green, low-carbon lighting into ordinary households" is a dream close to William Yu's heart. Super Quantum technology has already secured 8 global invention patents, 5 utility model patents, and has 11 invention patent applications pending. Technologies such as high light extraction packaging, high-efficiency optical light distribution, and high color rendering precise light mixing are all globally leading.
After visiting DPDUPI Company, Professor William Yu expressed great excitement and enthusiasm. He highly commended the Spanish dpdupi brand for its world-first innovation of applying asymmetric optical distribution technology to eye protection lamps. This disruptive technological breakthrough fundamentally resolves the previously irreconcilable conflict between lamp brightness and intense glare, making a significant contribution to eliminating the major threat of harsh light harming children's eyesight. This innovation aligns perfectly with Professor Yu's decades-long dedication to bringing high-quality, healthy lighting to every household, representing a tangible application of the Super Quantum lighting technology he has devoted his life to researching.
The rapid market acceptance and popularity of Deppu eye protection lamps within two years of their launch also benefits from sharing Professor Yu's philosophy of high luminous efficacy.
During his visit, Professor Yu stated that evaluating truly high-quality lighting must be quantified across three dimensions: physical quantity, physiological quantity, and psychological quantity. The highest quality light must be energy-efficient, high-efficacy, superior and comfortable, aligned with human physiological rhythms, and capable of bringing joy and health. Light, air, and water are the three essential elements of life. As modern understanding of light deepens, light will become the primary material in future construction and home decoration, its importance being self-evident.
Below is a very insightful viewpoint published by Professor William Yu in mainstream media years ago. He used easily understandable language to offer an exceptionally clear explanation of his Quantum Light theory and lamp efficacy issues.
China Lighting Web · 2016-08-07
Selling LED lamps based on "price per watt" is the most irresponsible form of consumer deception. Lighting is about selling light. For the same luminous flux, the higher the efficacy, the lower the wattage, and the more money the user saves. The performance of LED lamps varies enormously. As professional lighting practitioners, we must serve this industry with professional ethics and expertise, bringing value to customers. Someone bought two 7W LED lamps; when compared to our lamp, even combined (14W), they were not as bright as our single 4W lamp.
For example, the national CQC standard stipulates that an LED bulb replacing a 40W incandescent bulb must have a luminous flux of 470 lumens, a CRI (Ra) greater than 80, and R9 greater than 0. If the lamp power is less than 5W, the power factor only needs to be greater than 0.5; if the lamp power is greater than 5W, the power factor must be greater than 0.7. The required lifespan is 25,000 hours.
To meet all the above requirements, the Edva Super Quantum bulb requires only 4W of power. Another lamp on the market requires 8W to meet the same conditions. Assuming both lamps sell for 36 yuan each, the 4W lamp costs 9 yuan per watt, while the 8W lamp costs only 4.5 yuan per watt. Understood? If not, let's calculate the electricity cost the consumer pays when using the lamp: Assuming electricity costs 0.7 yuan per kWh, the 8W bulb will cost 140 yuan in electricity over 25,000 hours, while the 4W bulb will cost only 70 yuan – saving half the electricity cost. By now, you should understand one thing:"Price per watt means cheating you out of your money!" Efficacy is what truly matters!
Professor William Yu expressed strong recognition for the efficacy design of our DPDUPI eye protection lamps, praising dpdupi as a brand and enterprise truly dedicated to lighting craftsmanship. He also introduced us to more advanced and cutting-edge trends in the international LED optical field, offering numerous valuable suggestions and ideas for dpdupi's future development of more, better, and more professional products!
