Compact folded camera structure
Folded cameras and dual folded-upright cameras that reduce a mobile electronic device and specifically a smartphone bump footprint and height. In some examples, the bump footprint is reduced by reducing the height of a back focal plane section of the folded camera. In some examples, the bump footprint is reduced by reducing the height of a back focal plane section and a lens subsection of the folded camera.
1. A folded camera, comprising:
a) an optical path folding element (OPFE) section including an OPFE for folding an optical path from a first direction to a second direction, the OPFE section having an OPFE height H P in the first direction;
b) an image sensor mounted on a board in a plane perpendicular to the second direction, wherein the board has a height in the first direction, wherein the image sensor has an active part that is mounted asymmetrically relative to the board in the first direction by 5% or more of the board height; and
c) a lens section positioned between the OPFE and the image sensor.
2. The folded camera of claim 1 , wherein the OPFE faces an imaged object in the first direction, and wherein the sensor is mounted asymmetrically relative to the board in the first direction toward the imaged object.
3. The folded camera of claim 1 , further comprising a back focal length (BFL) section extending between the lens section and the image sensor and having a BFL section height H BFL in the first direction, wherein the lens section has at least one lens section height H L in the first direction.
4. The folded camera of claim 3 , wherein H BFL <H L .
5. The folded camera of claim 3 , wherein H L <H P .
6. The folded camera of claim 3 , wherein the lens section includes two subsections, wherein a lens subsection closer to the BFL section has a height H L2 and wherein H L2 <H L .
7. The folded camera of claim 6 , wherein H BFL <H L2 and H BFL <H L .
8. The folded camera of claim 6 , further comprising a flash element positioned on the lens subsection closer to the BFL section and having a height H FLASH <H P .
9. The folded camera of claim 6 , further comprising a flash element positioned partially on the BFL section and partially on the lens subsection closer to the BFL section and having a height H FLASH <H P .
10. The folded camera of claim 3 , wherein the BFL section has a top side and a bottom side, wherein the lens section has an optical axis parallel to the second direction and wherein the optical axis in the BFL section is closer to the top side of the BFL section than to the bottom side of the BFL section.
11. The folded camera of claim 10 , wherein the top side has an internal surface structured to prevent stray light from being directed toward the image sensor.
12. The folded camera of claim 3 , further comprising a flash element positioned on the BFL section and having a height H FLASH <H P .
13. The folded camera of claim 3 , wherein the lens section has a width W L and wherein W L >H L >H BFL .
14. A dual-aperture camera comprising a folded camera according to claim 1 together with an upright camera.
15. The dual-aperture camera of claim 14 , wherein the upright camera has an upright camera optical axis parallel to the first direction.
16. A mobile electronic device comprising a dual-aperture camera according to claim 14 .
17. A mobile electronic device comprising a folded camera according to claim 1 .
18. The mobile electronic device of claim 17 , comprising a bump on a surface thereof, wherein the bump surrounds an area including the folded camera and wherein at least one bump dimension is defined by a folded camera dimension.
19. The mobile electronic device of claim 18 , comprising an upright camera, wherein the folded camera and the upright camera form a dual-aperture camera, wherein the bump has a length, L B , defined along the second direction, wherein the dual-aperture camera has a length, L DC , defined along the second direction, and wherein L B <L DC .
20. A method for reducing a bump footprint of a smartphone, the method comprising:
a) providing a smartphone; and
b) attaching the folded camera of claim 1 to an exterior surface of the smartphone, wherein the folded camera reduces the bump footprint of the smartphone.
21. The method of claim 20 , further comprising: attaching an upright camera to an exterior surface of the smartphone, wherein the upright camera has an upright camera optical axis parallel to the first direction.
22. A method of manufacturing a folded camera, comprising:
a) providing an optical path folding element (OPFE) section with an OPFE for folding an optical path from a first direction to a second direction, the OPFE section having an OPFE height H P in the first direction;
b) providing an image sensor mounted on a board in a plane perpendicular to the second direction, wherein the board has a height in the first direction, wherein the image sensor has an active part that is mounted asymmetrically relative to the board in the first direction by 5% or more of the board height; and
c) providing a lens section positioned between the OPFE and the image sensor.