Imaging apparatus
AssigneeMicrosoft Technology Licensing, LLC
InventorsMikko Juhola, Marko Eromäki
Life of this patent
Estimating the term…
Abstract
The lens arrangement has at least two lenses, wherein a first lens may be used for autofocus and optical image stabilization. The first lens is tilted to compensate for the shaking movement of the hand-held device and to stabilize the image to be captured on the image plane. The tilt action may occur in two degrees of freedom, wherein an actuator causes the first lens to tilt around a pivot. A second lens is a field flattener lens that compensates for the error caused by the difference between the image plane and the focus plane. The field flattener lens causes the focal plane of the first lens to lie in the image plane when the first lens is in a tilted position.
Claims20
A method performed on an imaging apparatus comprising an image plane, a first lens and a second lens, the second lens comprising a field flattener, the image plane, the first lens, and the field flattener on an optical axis, wherein the field flattener is concave, the method comprising:
- causing, via an actuator coupled to the first lens, the first lens to tilt in one of a plurality of predefined tilt angles in response to an optical image stabilization element;
- and
- causing the field flattener lens to flatten a focal plane to the image plane at each of the plurality of predefined tilt angles.
An imaging apparatus, comprising:
- a first lens on an optical axis;
- an actuator coupled to the first lens, the actuator configured to cause the first lens to tilt in one of a plurality of predefined tilt angles in response to an optical image stabilization element;
- an image plane on the optical axis;
- and
- a second lens comprising a field flattener lens on the optical axis between the first lens and the image plane, the field flattener arranged to flatten a focal plane to the image plane at each of the plurality of predefined tilt angles, and wherein the field flattener is concave.
A system, comprising:
- an imaging apparatus;
- an optical image stabilization element;
- a processor;
- a memory storing instructions that, when executed by the processor, control the operation of the optical image stabilization element;
- a first lens on an optical axis;
- an actuator coupled to the first lens, the actuator configured to cause the first lens to tilt in one of a plurality of predefined tilt angles in response to a signal received from the optical image stabilization element;
- an image plane on the optical axis;
- and
- a second lens comprising a field flattener lens on the optical axis between the first lens and the image plane, the field flattener arranged to flatten a focal plane to the image plane at each of the plurality of predefined tilt angles, and wherein the field flattener is concave.
Dependencies are inferred from the claim text.