Hoya L42 (420nm) Longpass Filter is an optical material designed to transmit light above a specific wavelength while blocking shorter wavelengths.
It is made from specialty glass with precise spectral properties. The L42 filter is specifically engineered to allow the transmission of light with a wavelength longer than 420nm, while effectively blocking shorter wavelengths. This makes it well-suited for applications such as ultraviolet (UV) photography, fluorescence imaging, and scientific research where the selective transmission of longer wavelengths is desired. The Hoya L42 Longpass Filter offers high transmission in the desired wavelength range, enabling enhanced contrast and improved image quality in various optical setups.
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