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US 8,428,451 B2Granted
Interchangeable zoom lens actuator
AssigneeHong Kong Applied Science and Technology Research Institute Company Limited
InventorsChuen Kuen Yeung, Kai Cheong Kwan, Kwok Sing Cheng
Life of this patent
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Abstract
The subject matter disclosed herein relates to an optical module that includes interchangeable lenses to adjust a zoom level of the optical module.
Claims27
An apparatus comprising:
- a first lens assembly having a first effective focal length and a second lens assembly having a second effective focal length;
- a moveable platform on which said first and said second lens assemblies are mounted;
- an image sensor positioned to receive light from said first lens assembly if said moveable platform is in a first position or to receive light from said second lens assembly if said moveable platform is in a second position;
- and
- a coupling structure comprising:
- a first actuator to move said moveable platform linearly in a first direction to adjust a focus of said first lens assembly or said second lens assembly with respect to said image sensor in response to a change in distance between said image sensor and said moveable platform;
- and
- a second actuator to move said moveable platform linearly in a second direction perpendicular to said first direction to said first position or said second position.
5 more elements
An apparatus comprising:
- a horizontal motion (HM) platform comprising a magnet;
- a vertical motion (VM) platform comprising a focusing coil to magnetically interact with said magnet;
- a first lens assembly having a first effective focal length and a second lens assembly having a second effective focal length, wherein said first and said second lens assemblies are physically supported by said VM platform;
- one or more zoom coils to magnetically interact with said magnet;
- and
- an image sensor positioned to receive light from said first lens assembly if said HM platform is in a first position or to receive light from said second lens assembly if said HM platform is in a second position, wherein said HM platform is configured to move linearly.
3 more elements
An apparatus comprising:
- a horizontal motion (HM) platform comprising a magnet;
- a vertical motion (VM) platform comprising a focusing coil to magnetically interact with said magnet;
- a first lens assembly having a first effective focal length and a second lens assembly having a second effective focal length, wherein said first and said second lens assemblies are physically supported by said VM platform;
- one or more zoom coils to magnetically interact with said magnet;
- and
- an image sensor positioned to receive light from said first lens assembly if said HM platform is in a first position or to receive light from said second lens assembly if said HM platform is in a second position, wherein said one or more zoom coils are stationary with respect to said image sensor.
3 more elements
An apparatus comprising:
- a horizontal motion (HM) platform comprising a magnet;
- a vertical motion (VM) platform comprising a focusing coil to magnetically interact with said magnet;
- a first lens assembly having a first effective focal length and a second lens assembly having a second effective focal length, wherein said first and said second lens assemblies are physically supported by said VM platform;
- one or more zoom coils to magnetically interact with said magnet;
- and
- an image sensor positioned to receive light from said first lens assembly if said HM platform is in a first position or to receive light from said second lens assembly if said HM platform is in a second position, wherein said magnet comprises a ring-shaped magnet.
3 more elements
Dependencies are inferred from the claim text.