US Patent 7997809 Dehumidifier caps for cameras

A camera cap assembly removes moisture from a camera rear lens and/or a camera body. The camera cap assembly includes a main body that has a front end, a rear end, and an inner divider having a number of openings. The camera cap assembly also includes a desiccant holder cap at the rear end of the main body and a storage sealing cap at the front end. A desiccant chamber is defined between the desiccant holder cap and the inner divider for storing a dehumidifying component. The sealing storage cap is secured to the front end of the main body when the camera cap assembly is not in use. The camera cap assembly is to be attached to a camera rear lens or a camera body, without the storage cap, via bayonet mount and a sealing ring.