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The difference and advantages between conventional filter cutting method and precision laser cutting

Release time:2021-09-07 15:47:00

【summary】

Although the traditional processing methods are very mature, there are still many problems such as surface scratches, low substrate utilization, large processing loss, and complex process. In addition, laser cutting can achieve non-contact processing, does not damage the film surface, has high precision and fast speed.

Optical filter refers to coating one or more dielectric or metal films on optoelectronic devices or separate substrates to change the characteristics of light wave transmission. Through the transmission of these films, the characteristics of light waves change, such as transmission, absorption, scattering, reflection, polarization, phase change, etc. Design and manufacture various filter products to achieve the purpose of scientific and engineering applications.

Optical filters are an important type of optical equipment with a wide variety of products. They are widely used in imaging, identification, sensing and other fields, such as digital cameras, surveillance cameras, biometrics (including fingerprint, face, iris, gesture recognition and other proximity sensors, smart phones, etc.). As a major producer of electronic products, China's automotive electronics level has increased and the pace of building smart cities is also accelerating. Many factors have contributed to the rapid growth of China's demand for optical filters.

Optical devices are precision instruments, especially optical filters, and the surface is easily scratched. Improper cleaning and storage will damage the film layer on the surface of the filter, reduce its performance and shorten its service life.

 

The difference and advantages between conventional filter cutting method and precision laser cutting(图1)

The difference and advantages between conventional cutting methods and precision laser cutting:

As a non-contact processing method, laser has been applied to more and more fields.

Although the traditional processing methods are very mature, there are still many problems such as surface scratches, low substrate utilization, large processing loss, and complex process. In addition, laser cutting can achieve non-contact processing, does not damage the membrane surface, has high precision, fast speed, narrow cutting seam, small heat-affected zone, smooth cutting surface without burrs, flexible processing, and can process any shape. There is no need to paint the coating surface to protect it, the cutting speed is fast, and the substrate utilization rate is improved.


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