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Recently, under the support of the Chongqing Science and Technology Plan Project, the Integrated Optoelectronic Technology Research Center of the Chongqing Institute of Green Intelligent Technology of the Chinese Academy of Sciences has made important progress in the application research of the UV LED free-form surface light distribution technology, and successfully used the UV LED light source in the field of exposure machines. , Products have been applied in PCB, LCD panel, touch screen and other industries. Relevant results have been granted by the national patent (Patent No.: Lens 201320875490.0 for UV LED collimation, UV LED exposure head 201420651432.4 with high uniformity).
The traditional parallel light exposure machine uses a high-pressure mercury lamp as a light source, which has a lifetime of only 1000 hours, consumes high power, and is polluted. Replacing the mercury lamp light source with UVLED has a lifetime up to 50 times that of the mercury lamp, and the power consumption can be reduced by 90%, which substantially reduces the production cost of the company and is environmentally friendly.
Currently, the Chongqing Research Institute has broken through key technologies such as precise distribution of light from multiple free-form surfaces of LEDs and processing of inorganic optical components suitable for ultraviolet wavelengths. For the first time, a parallel light exposure head based on an ultraviolet LED has been developed. The parallel half-angle can be controlled within ±2°. The illumination unevenness is less than 3% and the illumination intensity is as high as 40mW/cm2.
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