Folded camera with optical image stabilization
Folded digital camera comprising a lens having a lens optical axis, an image sensor and first and second optical path folding elements (OPFEs), in which the second OPFE is closest to the image sensor, wherein the lens is operative to move in a first direction substantially parallel to the lens optical axis and in a second direction substantially perpendicular to first and second optical paths, wherein the second OPFE is operative to move in the first direction, and wherein the combined motion of the lens and of the second OPFE is operative to provide focus and to compensate for tilts of the camera around the first and second directions.
1. A method, comprising:
a) providing a folded camera having a single lens module having a single lens module optical axis and a fixed effective focal length (EFL), an image sensor, a first optical path folding element (OPFE) for folding light arriving from an object in a first optical path to a second optical path substantially aligned with the lens optical axis, and a second OPFE for folding light from the second optical path to a third optical path toward the image sensor, wherein the third optical path is substantially parallel with the first optical path and wherein the first and third optical paths are substantially orthogonal to the second optical path;
b) moving the single lens module including all lens elements therein as a single integrated unit in a first direction substantially parallel to the single lens module optical axis and in a second direction substantially perpendicular to both the first and second optical paths; and
c) moving the second OPFE in the first direction,
wherein the combined motion of the single lens module and of the second OPFE is operative to provide focus and to compensate for tilts of the camera around the first and second directions.
2. The method of claim 1 , wherein the single lens module is fixedly attached to the first OPFE to form a lens-OPFE assembly and wherein moving the single lens module includes moving the lens-OPFE assembly.
3. A method for providing focus and optical image stabilization in a folded camera module having a first optical path folding element (OPFE) for folding light from a first optical path with a first optical axis to a second optical path with a second optical axis perpendicular to the first optical axis, a single lens module with a symmetry axis parallel to the second optical axis and with a fixed effective focal length (EFL), and a second OPFE for folding light from the second optical path to a third optical path, the method comprising:
a) moving the single lens module including all lens elements therein as a single integrated unit in a first direction substantially parallel to the symmetry axis and in a second direction substantially perpendicular to both the first and second optical paths; and
b) moving the second OPFE in the first direction,
wherein the combined motion of the single lens module and of the second OPFE is operative to provide focus and to compensate for tilts of the camera around the first and second directions.