Filter precision laser cutting advantages and the difference between traditional cutting methods

The optical filter refers to a layer or multiple layers of dielectric film or metal film plated on the optical element or an independent substrate to change the characteristics of light wave transmission. Using the characteristic changes of light waves in the transmission of these films, such as transmission, absorption, scattering, reflection, polarization, phase changes, etc., then design and manufacture a variety of filter products to achieve the purpose of scientific and engineering applications.

Filter is an important optical device, with a wide variety of products, widely used in imaging, recognition, sensing, etc., such as digital camera cameras, surveillance cameras, biometrics (including fingerprint, face, iris, gesture recognition, etc.), proximity sensing, smart phones and other fields. China is a large country in the production of electronic products, the degree of automobile electronization continues to improve, the construction of smart cities continues to accelerate, and many factors jointly promote the rapid growth of China’s filter demand.

All optical components are precision instruments, especially optical filters, and the surface is easily scratched. Improper cleaning and storage may damage the filter surface film, reduce its application performance and shorten its service life.

The difference between traditional cutting method and precision laser cutting and the advantages of laser cutting filter

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

Although the traditional processing method is currently very mature, there are many problems, such as surface scratches, low substrate utilization, large processing losses, and complex process. The laser cutting can achieve non-contact processing, no damage to the film surface, high precision, fast speed, narrow slit, small heat affected zone, smooth cutting surface without burr, good processing flexibility, can process any shape. There is no need to paint the coating surface during processing; Fast cutting speed; The substrate utilization rate is improved.