The details that should be paid attention to in the usual use of optical filters

        Filters are used to attenuate (absorb) certain wavelength bands of light waves or to select a small range of wavelength bands to pass through, while reflecting (or absorbing) other undesired wavelength bands. By changing the structure of the filter and the optical parameters of the film layer, various spectral characteristics can be obtained, so that the filter can control, adjust and change the transmission, reflection, polarization or phase state of the light wave.

        Optical filters are made by adding special dyes to plastic or glass substrates or evaporating optical films on their surfaces to attenuate (absorb) certain wavelengths of light waves or to select a small range of wavelengths to pass through, while reflecting. (or absorb) other unwanted bands. By changing the structure of the filter and the optical parameters of the film layer, various spectral characteristics can be obtained, so that the filter can control, adjust and change the transmission, reflection, polarization or phase state of the light wave.

        Optical filter, the surface is easy to be scratched. Improper cleaning and storage may damage the filter surface coating, reducing its application performance and shortening its service life. Therefore, the correct maintenance method is more important. Learn about the details to pay attention to in the use of optical filters:

        1. Care should be taken during use, and at the same time, pay attention to the external environment to avoid the zipper, buttons, etc. of the clothes from scratching the filter.

        2. Wear finger cots when touching the filter to avoid salt and acidic substances on your hands from corroding the surface of the substrate.

        3. When picking up the filter, you should hold the edge of the filter by hand, and do not touch the light-transmitting surface of the filter even if you are wearing a finger cot.

        4. The filter should be placed on a soft and clean object, not on glass, metal, table, or unclean paper.

        5. When storing, it should be placed in clean capacitive paper or special lens cleaning paper and wrapped. The storage temperature is around 23°C, and the humidity is not higher than 40%. Better in a dry storage cabinet.

        6. Do not stack the filters together to avoid wear and tear.

        7. If there are stains or fingerprints on the surface, it can be wiped with absolute ethanol or similar functional solvent. The specific method is as follows: put a dust-free finger cot on the finger, soak the towel with absolute ethanol, drag the edge of the towel soaked in ethanol, and move it in a single direction on the surface of the filter. Wipe as lightly as possible.