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US 7,443,598 B2Granted
Variable focal length lens
AssigneeHon Hai Precision Industry Co., Ltd.
InventorGa-Lane Chen
Life of this patent
Estimating the term…
Abstract
A variable focal length lens (12) includes a central transparent elastic portion (120) having a first wall (1200) and a second wall (1202) intersecting an optical axis and a peripheral portion (122) surrounding the body. The first wall and the second wall joined with the periphery form a container (124). The container is filled with magnetic fluid (126).
Claims20
A variable focal length lens comprising:
- a container comprising a central transparent elastic portion;
- a peripheral portion surrounding the central transparent elastic portion;
- a light-permeable magnetic fluid received in the container;
- and
- a magnetic field generating device arranged adjacent the container and configured for exerting a radial magnetic force on the magnetic fluid in a direction from the periphery to a center of the central transparent elastic portion.
2 more elements
A variable focal length lens comprising:
- a container comprising a central transparent elastic portion;
- a peripheral portion surrounding the central transparent elastic portion;
- a light-permeable magnetic fluid received in the container;
- and
- a magnetic coil arranged adjacent the container and configured for exerting a radial magnetic force on the magnetic fluid in a direction from the periphery to a center of the central transparent elastic portion.
2 more elements
Dependencies are inferred from the claim text.