Precision-engineered optical glass filter devised to transmit 850nm infrared wavelengths while effectively blocking visible light for applications. Constructed from premium optical glass, ensuring exceptional clarity, durability, and reliable performance in filtering invisible light wavelengths. Narrowband filtering capability allows for accurate infrared light transmission, making it ideal for infrared photography and scientific instrumentation. Available in versatile round and square shapes, accommodating a variety of optical setups and custom applications requiring infrared light transmission. Transparent devise filters visible light while allowing infrared wavelengths to pass through, perfect for sensors, cameras, and advanced scientific equipment.