Patent ID: 8608325

Claim:
A 3-D focusing system for a 3-D camera, said 3-D focusing system comprising: a focusing frame; a twin lens assembly including a pair of lenses mounted in said focusing frame, said pair of lenses having a pair of parallel optical axes; a first pair of mirrors, each located on a different one of the parallel optical axes of said pair of lenses, said first pair of mirrors being fixed, each of said first pair of mirrors being tilted to reflect light in a generally opposite direction across the optical axis of the other of said lenses; a second pair of mirrors, each of said second pair of mirrors being in the path of reflection of a different one of said first pair of mirrors and located on the opposite side of said optical axes from a mirror of said first pair of mirrors from which said respective mirror of said second pair of mirrors receives reflective light, said second pair of mirrors being tilted to reflect light in the general direction of an object plane, at least one of said second pair of mirrors being adjustable to change the tilt of said at least one of said second pair of mirrors to change the angle of reflection of light impinging on said at least one adjustable mirror; an adjusting structure operably connected to both said focusing frame and said at least one adjustable mirror, said adjusting structure simultaneously moving said focusing frame along said parallel optical axes and said at least one adjustable mirror, and adjusting the tilt of said at least one adjustable mirror to vary the direction of at least one of the optical axes of the light transmitted through at least one of the pair of lenses and directed toward the at least one adjustable mirror to capture a pair of images focused on the object plane from different angles to perform parallax compensation to eliminate double vision.