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US 2005/0031328 A1Published application
Lens control apparatus of a digital still camera
OwnerShih-Lung Weng, Ming-Chih Yuaninventors
Life of this patent
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Abstract
A lens control apparatus includes a lens and an electromagnetic switch, wherein the lens is rotatably coupled to a casing of a digital still camera, while the electromagnetic includes a permanent magnet and an electromagnet. The permanent magnet projects from the periphery of the lens, while the electromagnet is disposed on the casing of the digital still camera. When the electromagnet switch turns on, a magnetic force is produced to rotate the lens relative to the digital still camera so that a two- or multiple-level zooming can thus be achieved.
Claims17
A lens control apparatus, comprising:
- a lens rotatably coupled to a casing;
- and
- an electromagnetic switch, including
- a permanent magnet disposed onto a peripheral of the lens;
- and
- an electromagnet disposed at one side of the casing closer to the lens;
- wherein when the electromagnet switch turns on, a magnetic force produced by the permanent magnet and the electromagnet drives the lens to rotate relative to the casing.
4 more elements
A lens control apparatus, comprising:
- a lens rotatably coupled to a casing;
- and
- an electromagnetic switch, including
- a permanent magnet projecting from a peripheral of the lens;
- a first electromagnet disposed at the casing;
- and
- a second electromagnet disposed at the casing, wherein the second and first electromagnets disposed at the same side of the lens are positioned at different angles to the lens;
- wherein when the electromagnet switch turns on, a magnetic force produced by the permanent magnet and either one of the first and the second electromagnets drives the lens to rotate to different angles relative to the casing.
5 more elements
Dependencies are inferred from the claim text.