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US 10,948,681 B2Granted
System for balancing center of gravity of a zoom lens
AssigneeSz Dji Technology Co., Ltd.
InventorTakashi Koyama
Life of this patent
Estimating the term…
Abstract
A lens barrel includes one or more movable lens groups, and a cam barrel associated with the one or more movable lens groups and configured to balance a center of gravity of the one or more movable lens groups.
Claims20
A lens barrel, comprising:
- one or more movable lens groups;
- and
- a cam barrel associated with the one or more movable lens groups and configured to balance a center of gravity of the one or more movable lens groups by:
- moving to create a first torque change along an optical axis of the lens barrel that negates a second torque change along the optical axis created by a movement of the one or more movable lens groups.
1 more element
A lens barrel, comprising:
- one or more movable lens groups;
- a cam barrel associated with the one or more movable lens groups and configured to balance a center of gravity of the one or more movable lens groups;
- and
- a stationary barrel associated with an inner surface of the cam barrel and configured to cooperate with the cam barrel for guiding the cam barrel to move along an optical axis of the lens barrel.
1 more element
Dependencies are inferred from the claim text.