A “filter” is an optical component that filters out light with no wavelength, or selectively transmits light with a specific wavelength. With filters, we can control the wavelength or band of light that is blocked or passed through.
What is a filter?
Optical filter refers to coating one or more layers of dielectric films or metal films on optical elements or independent substrates to change the characteristics of light wave transmission. Using the characteristic changes of light wave in the transmission of these films, such as transmission, absorption, scattering, reflection, polarization, phase change, etc., to design and manufacture various optical filter products to achieve scientific and engineering applications.
The production and manufacturing of optical filters is a complex engineering technology, involving many professional and technical fields, including vacuum acquisition technology, vacuum measurement technology, computer aided design technology, optical property detection technology, electronic circuit technology, material property detection and preparation technology, etc.
Type of filter
Filter technology and quality control system
In the field of optical components, Meisi Pioneer focuses on the design and development of mid and far infrared band filters, and has built a product system of optical components such as infrared long wave pass filters, band-pass filters, narrowband filters, antireflection/antireflection filters, and metallized light windows.
01. Infrared long wave pass filter
One side of the long wave pass filter is coated with a hard medium long wave pass filter film, and the other side is coated with an antireflection film. The long wave direction is through, and the short wave direction is cut off, which can isolate the short wave in a specific wavelength range.
High transmissivity, low cut-off rate, accurate measurement
Strong stability and anti-interference ability