The OV2722 is a camera sensor manufactured by OmniVision Technologies, primarily used in various devices such as laptops, tablets, and webcams. It's a 720p HD camera sensor that is commonly integrated into hardware for video capture and imaging purposes. In the context of Windows, the OV2722 camera sensor driver is the software that allows your computer to recognize and properly interface with the OV2722 camera, enabling it to work for applications like video calling, recording, or other camera-related functions.