Two-Speed Focusing Mechanism
AssigneeKARL STORZ Imaging, Inc.
InventorThomas J. Anhalt
Life of this patent
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Abstract
A two-speed focusing mechanism includes a base having an inner guide, a carrier disposed within the inner guide, a first drive, an outer guide and a second drive. A first and second bearing are disposed in a respective inner dimple of the carrier and a second bearing is disposed within a first dimple of the first drive. The first and second bearings are held within a respective inner slot and outer slot and a first guide and second guide, wherein a rotation of the second drive is translated into an axial movement of the carrier at different speeds.
Claims14
A two-speed mechanism configured to translate a rotary motion into an axial displacement at two different speeds, the two-speed mechanism comprising:
- a base having an inner guide, the inner guide being a tubular member having an inner slot;
- a carrier disposed within the inner guide, an outer surface of the carrier having an inner dimple;
- a first drive, the first drive being a tubular member concentric to the inner guide, an inner surface of the first drive having a first groove, the first groove being helical and having a first pitch, an outer surface of the first drive having a first dimple;
- an outer guide, the outer guide being a tubular member concentric to the first drive, the outer guide having an outer slot;
- a second drive, the second drive being a tubular member concentric to the outer guide, an inner surface of the second drive having a second groove, the second groove being helical having a second pitch that is less than the first pitch;
- a first bearing disposed within the inner dimple, the inner slot and the first groove;
- a second bearing disposed within the first dimple, the outer slot and the second groove;
- and
- wherein a rotation of the second drive translates the carrier axially at different speeds.
A focusing mechanism for a camera, the focusing mechanism comprising:
- a base having an inner guide, the inner guide being a tubular member having an inner slot,
- a lens cell disposed within the inner guide, an outer surface of the lens cell having an inner dimple;
- a first drive, the first drive being a tubular member concentric to the inner guide, an inner surface of the first drive having a first groove, the first groove being helical and having a first pitch, an outer surface of the first drive having a first dimple;
- an outer guide, the outer guide being a tubular member concentric to the first drive, the outer guide having an outer slot;
- and
- a second drive, the second drive being a tubular member concentric to the outer guide, an inner surface of the second drive having a second groove, the second groove being helical having a second pitch that is less than the first pitch;
- a first bearing disposed within the inner dimple, the inner slot and the first groove, wherein a rotation of the first drive translates an axial movement of the lens cell within the inner slot;
- a second bearing disposed within the first dimple, the outer slot and the second groove;
- and
- wherein a rotation of the second drive translates the lens cell axially within the inner guide and the outer guide at different speeds.
Dependencies are inferred from the claim text.