New progress in the application of UV LED freeform surface alignment technology

Recently, in Chongqing city science and technology project support, made important progress in the application of Chinese Academy of Sciences Chongqing Green Intelligent Technology Research Institute for integrated optoelectronic technology research center in the ultraviolet LED free surface light distribution technology, the success of LED ultraviolet light source for exposure machine, the product has been applied in PCB, the LCD panel, touch screen industry. The relevant results have been awarded the national patent (patent number: 201320875490 for the UV LED collimation lens, a high degree of uniformity of UV LED exposure head 201420651432.4).

The traditional parallel light exposure machine adopts the high pressure mercury lamp as the light source, and the service life is only 1000 hours. Using UVLED to replace mercury lamp light source, life can reach 50 times the mercury lamp, power consumption can be reduced by 90%, significantly reduce production costs, environmental pollution.

At present, the Chongqing academy has breakthrough the key technology of LED multi precision optical free-form surface, suitable for ultraviolet inorganic optical element processing, first developed a parallel light ultraviolet exposure head based on LED, the parallel angle can be controlled within about 2 degrees, lighting uniformity is less than 3%, lighting intensity reached 40mW/cm2.

Independently developed part of UVLED exposure head and light source module

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