[Text/High-tech LED reporter Liu Pingping] 2013 (3rd) High-tech LED Lighting Exhibition officially opened on November 25th at Guangzhou Pazhou Poly International Trade Fair Exhibition Hall. More than 200 domestic LED brand manufacturers took LED good products and punched Debut, the upper, middle and lower reaches of the company and tens of thousands of professional visitors at home and abroad exchanges and talks to jointly promote the progress of the LED industry.
As an important partner of the high-tech LED lighting exhibition, Foshan Zhonghao Optoelectronics Technology Co., Ltd. (hereinafter referred to as “Zhongyi Optoelectronicsâ€) has a number of competitive products, including standard optical components COB and the world's only ZnO. Transparent conductive film chip, high-efficiency and high-performance COB light source, high-quality light source with R9 greater than 50, etc.
Wang Mengyuan, general manager of Zhonghao Optoelectronics, revealed that the ZnO transparent conductive film technology developed by Zhonghao Optoelectronics has been successfully applied in the LED chip process. It has complete independent intellectual property rights and is about to enter the market stage. In the future, this technology will be based on actual needs. It is used in COB products of Zhonghao Optoelectronics.
In addition to the world's only ZnO transparent conductive film chip, the high-efficiency and high-performance COB light source is another representative product of Zhonghao Optoelectronics. As we all know, the light effect and the indicator have always been a contradiction. How to improve the light efficiency in the case of high index is also a recognized problem in the industry.
At present, the mainstream method for realizing high color rendering index LED white light in the world is to increase the red powder excited by red spectrum by changing the phosphor material. However, this method has great influence on the excitation spectrum and temperature of the red powder, during the use of the product. The generated heat makes the red and white spectral characteristics of white light change easily. The intuitive result of this change is generally reflected in the change of color temperature and color rendering as the product lighting time increases, and the excitation efficiency becomes weak. The light effect reduction effect also occurs.
"There are many factors affecting the color rendering index and light efficiency. The key is to find a specific balancing method according to different applications. Structural design is the core." Wang Mengyuan said that after years of research, Zhonghao Optoelectronics has changed the traditional discrete packaging devices. In a combined manner, a multi-color chip is created, and the best color rendering index and light efficiency are obtained by calculating a combination of simulated fitting spectra, and the color temperature is sought to be near the black body trajectory.
According to the above process innovation, the white light source has the characteristics of color rendering index above Ra90, light efficiency of 110 lm/w or more (3000K color temperature) and strong comfort, which fundamentally solves the problem that the white light module can only rely on sacrificial light. Effective to improve the old problem of color rendering index.
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