System for providing two position zoom-focus

Details System for providing two position zoom-focus System for providing two position zoom-focus

2011-06-14

2011-06-14

Mack, Ricky L (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

Reexamination Certificate

active

07961401

ABSTRACT:
A system for providing a two-position zoom-focus capability in a video inspection device comprising, in one embodiment, a focus lens cell and primary aperture attached to a set of fixed rails and connected to a zoom lens cell. In one embodiment, the focus lens cell is moveable into a first position along the rails through activation of a proximally located lens movement mechanism, and moveable into a second position through relaxation of a tensioned focus spring. In one embodiment, movement of the focus lens cell between first and second focus positions causes movement of the zoom lens cell and a secondary aperture between corresponding first and second zoom and aperture positions to provide unmagnified and magnified images of a target object.

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patent: 7764321 (2010-07-01), Sugimoto
patent: 7778539 (2010-08-01), Ito

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