Lens mount support for self-extending camera

摘要

An objective lens extension device for use with a camera having an interchangeable lens coupling includes front and rear mounts having confronting recesses which form a housing when together, the rear mount having a camera coupling and the front mount having a lens coupling similar to the camera lens coupling and complimenting and rear mount camera coupling. A bellows extends between the mounts coaxial with the mount couplings and a pair of similar longitudinally extending linearly extendable contractable link assemblies, for example of the lazy tongs type, extend between and are connected to the mounts and lie in mutually perpendicular planes. A third link assembly may be provided parallel and similar to one of the others. The link assemblies may be spring biased to a contracted condition, releasably locked in preselected conditions and transversely stressed to frictionally retard their movement. In the bellows and link assemblies contracted condition they are enclosed in the housing formed by the contracted mounts.