Ultraviolet laser precision machining mobile phone camera

In recent years, the development of mobile phones has gradually shown a trend - the number of cameras is increasing. For example, Huawei's just launched Mate 30 series has four cameras, and Apple's iPhone 11 Pro has three cameras.

These cameras are stacked together and look like a Yuba, or a front-loading washing machine. It is undeniable that the camera performance of mobile phones is indeed becoming more and more powerful, and many flagship mobile phones can easily shoot fashion blockbusters comparable to digital cameras.

With the increase in the number of cameras, the components that constitute the camera of the mobile phone are also more and more complex, such as PCB boards. A PCB is a printed circuit board.

With the development of intelligence in the electronics industry, the number of layers of the PCB is increasing, and it is getting smaller and thinner, and more and more electronic components are accommodated, which puts forward higher precision for the processing. Require. In recent years, laser technology and laser processing equipment have continued to mature, providing effective solutions for PCB boards.

At present, the most commonly used PCB cutting is the UV laser cutting machine. Ultraviolet laser cutting does not touch components, has little thermal impact, will not cause damage to components, and has high precision, with a light spot of 10μm (1μm is one millionth of 1m). Biologically, it is on the order of the size of a cell. Such fine lasers also place higher requirements on the corresponding laser chillers.

The higher the temperature control accuracy, the smaller the water temperature fluctuation, the more stable the water pressure, thereby reducing the load on the laser pipeline and avoiding the generation of air bubbles. (The life of the chip is closely related to the stability of the circulating cooling water pressure. The larger the fluctuation, the increase in the amount of light loss, and at the same time, bubbles may be generated, which will cause cavitation and vibration to the internal pipeline of the laser, which will greatly reduce the life of the laser.)