What is a monochrome camera? Thank you~

Monochrome photography is to express things with one color or light (including invisible light). Modern digital cameras have the function of visible monochrome photography (such as black and white photography). Professional monochrome cameras generally refer to cameras whose photographic film (film or CCD) only accepts monochromatic light, and their lenses and body structures are specially designed for monochromatic light, such as active infrared night vision cameras that can emit infrared rays, low-light night vision cameras that accept weak light, ultraviolet cameras for astronomy, medicine and criminal reconnaissance, and Camaro ray cameras. SLR camera is a single-lens reflex camera, which is a kind of camera with a relatively common structure and is basically not next to it.