The Peripheral Vision Filter reshapes the searchlight's beam to produce a bright center spot with a wide band of light extending to either side. It is useful for wide area search applications where a full, circular beam shape is not desired. This filter attaches to the searchlight using a positive locking technique that requires no threading or tools, making it easy to install or remove a filter in seconds with only a quarter turn. If customized with a stacking lens adapter, the Peripheral Vision Filter can be used in conjunction with an Infrared Filter for covert surveillance applications.