The term “BG39 IR Cut Filter” refers to a specific type of optical filter used in cameras to block infrared (IR) light while allowing visible light to pass through. It is commonly used in digital cameras and other imaging devices to improve image quality by reducing the impact of infrared radiation.
The BG39 IR Cut Filter is named after its spectral characteristics. It has a specific transmittance curve that allows visible light (wavelengths between approximately 400nm and 700nm) to pass through while blocking or attenuating infrared light (wavelengths above 700nm).