Which of the following filters is used to block infrared light?

The IR cut filter is specifically designed to block infrared light while allowing visible light to pass through. Its primary function is to enhance the quality of image capture in devices such as cameras and video systems that are sensitive to different wavelengths of light. By filtering out infrared light, the IR cut filter helps prevent color distortion and ensures that the images produced are true to life in terms of color representation. This is especially crucial in scenarios where accurate color reproduction is necessary, as infrared can skew the colors perceived by the sensor.

Carbon dioxide and other common sources of infrared can interfere with image clarity if not properly filtered, making the IR cut filter an essential component in many imaging systems, particularly in surveillance and security cameras where detail and color accuracy are paramount.