Abstract: A window/lens mounting assembly that provides a method for securing both a lens component and a separate window element through the use of a single retaining ring. Said window, such as glass or plastic, serves both as a protective shield and a clear opening that allows light to pass through said lens. Said retaining ring secures said lens with retaining members, such as screws, which apply pressure at right angles to the axis of said lens. Additional retaining members secure said retaining ring to a retaining ring holder also by application of pressure at right angles to the axis of the said lens. Said additional retaining members also act against said retaining ring, which in turn, secures said window in place by applying force parallel to the axis of said lens. The window, in turn, is fixed tightly against a compression gasket between said window and a face plate. Thus a water tight seal is formed between said window and said lens.