Longpass Filters

Description

Schneider-Kreuznach magnetron sputtered industrial longpass filters impress with steep slopes and high transmission at stable cut-on wavelengths. The very flat surface makes them ideal for high end machine vision systems in factory automation. All longpass filters come with superior antireflection coating. Schneider-Kreuznach longpass filters are RoHS conform. Custom sizes are available on request. What is the function of a longpass filter? A longpass filter selectively transmits light with longer wavelengths while blocking light with shorter wavelengths. The filter is designed to transmit light that is above a specific wavelength cuton, known as the filter’s “cuton wavelength,” and to reflect or absorb light that is below this wavelength. Where is a longpass filter used? In industrial applications, longpass filters are used to remove unwanted shorter wavelength light from a light source or to separate different wavelengths of light. For example, in fluorescence microscopy, a longpass filter can be used to block the excitation light and allow only the longer wavelength fluorescence emission light to be imaged.   Key features Technical Data Applications Mounts Product highlights Environmental facts