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LED optical lens is mainly used for concentrating LED cold light source products. However, the current price drop of LED chip is serious and the technology is updated rapidly, which has pushed the LED lens industry to an embarrassing situation. Mr. Xu, an optical executive at Chengdu Pais, said that the market characteristics of LED lenses are: multiple varieties and small batches. Based on this, many lens manufacturers are not willing to make large R&D investment.
As an integral part of LED lighting fixtures, the lens affects the quality of L ED light. The optical system that combines the lens with the LED to help improve the light extraction efficiency of the LED and change the light field distribution of the LED. However, the current LED lens industry is still dominated by the low-end market, and the role of the lens has not attracted widespread attention. It is understood that small LED lens factories in Zhongshan and other regions do not have optical design, nor professional optical testing equipment. On the contrary, low-end injection molding machines and secondary materials are used to ensure optical quality.
In fact, from the perspective of the design and production process of LED lenses, the seemingly simple LED lens has very high requirements on software and hardware. At this time, one of the main reasons for the large price difference in the LED lens market. At present, only international companies such as cree and osram use medium and high-end LED lenses. Generally, manufacturers will choose low-end products with low cost. However, this market has great potential. It is understood that the profit of medium and high-end LED lens can reach more than 30%.
The lens is made according to market demand, but the current technology update of LED chip and package is accelerated, and the quality of LED lighting is improved, which undoubtedly puts higher requirements on the lens. “The trend of finer division of labor, multi-layer structure, and silica gel materials is both a challenge and an opportunity for the LED lens field,†said Li Zhixin, director of optical technology at Baishi.
For more information, please refer to the February issue of "High-tech LED-Technology and Applications" magazine. 
[Source: "High-tech LED - Technology and Applications" February issue Tang Guirong]