Infrared cutoff filter IR-CUT 650

The IR650nm infrared cut-off filter is an optical component primarily used to filter out infrared light in imaging systems while allowing visible light to pass through. Its core principle involves forming specific film structures on optical substrates (such as K9 glass, fused quartz, etc.) using precise optical coating technology. This results in high transmittance (typically over 90%) in the visible light spectrum (usually 400-650nm) and deep cutoff in the near-infrared spectrum (700nm and above), with a cutoff efficiency of up to 95% or more. Widely applied in cameras, surveillance equipment, fingerprint recognition systems, and optical instruments, this filter effectively eliminates interference from infrared light on imaging, preventing issues such as color distortion and blurriness. Thus, it ensures that imaging systems can accurately reproduce true colors and details.