Featured Product from Daheng New Epoch Technology, Inc.
medium-type short-wave pass filter is usually used for accurate selection of transmission or cut-off light bands. It is made of quartz glass coated with different dielectric materials. When a mixed beam with multiple wavelengths passes through a filter, the interference effect results in the reflection and absorption of light at a specific short wavelength band with a very high transmittance and a longer wavelength band. The transition band between the transmittance band and the cut-off band of the filter is very narrow and very sensitive to the angle, and only when incident vertically or approximately vertically. In order to obtain the corresponding waveband output beam