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:
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;
a lens section positioned between the OPFE and an image sensor;
a back focal length (BFL) section extending between the lens section and the image sensor; and
a flash element positioned on the BFL section or the lens section, wherein the BFL section has a BFL section height H BFL in the first direction, wherein the lens section has at least one adjacent lens section height H L in the first direction and wherein H BFL <H L .
2. The folded camera of claim 1 , wherein the flash element is positioned on a lens subsection closer to the BFL section.
3. The folded camera of claim 1 , wherein the lens section has at least one lens section height H L in the first direction and wherein H L ≤H P .
4. The folded camera of claim 1 , 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 .
5. The folded camera of claim 4 , wherein H BFL ≤H L2 and H BFL <H L .
6. The folded camera of claim 1 , 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.
7. The folded camera of claim 6 , wherein the top side has an internal surface structured to prevent stray light from being directed toward the image sensor.
8. The folded camera of claim 1 , wherein the flash element has a height H FLASH ≤H P .
9. The folded camera of claim 1 , wherein the lens section has a width W L and wherein W L >H L >H BFL .
10. The folded camera of claim 1 , wherein the folded camera is included in a mobile device.
11. The folded camera of claim 10 , wherein the mobile device comprises 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.
12. The folded camera of claim 1 , wherein the folded camera is included together with an upright camera in a dual-aperture camera.
13. The folded camera of claim 12 , wherein the upright camera has an upright camera optical axis parallel to the first direction.
14. The folded camera of claim 12 , wherein the dual-aperture camera is included in a mobile device.
15. The folded camera of claim 14 , wherein the mobile device comprises a bump on a surface thereof, wherein the bump surrounds an area including the dual-aperture camera and wherein at least one bump dimension is defined by a folded camera dimension.
16. The folded camera of claim 15 , 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 .
17. A method for reducing a bump footprint of a smartphone, comprising:
providing a smartphone; and
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.
18. A method of manufacturing a folded camera, comprising:
providing 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;
providing a lens section positioned between the OPFE and an image sensor;
providing a back focal length (BFL) section extending between the lens section and the image; and
providing a flash element positioned on the BFL section or the lens section, wherein the BFL section has a BFL section height H BFL in the first direction, wherein the lens section has at least one adjacent lens section height H L in the first direction and wherein H BFL <H L .