Multi-lens imaging apparatus with actuator

Patent metadata

Field	Value
Publication number	US-10257433-B2
Application number	US-201514696942-A
Country	US
Kind code	B2
Filing date	Apr 27, 2015
Priority date	Apr 27, 2015
Publication date	Apr 9, 2019
Grant date	Apr 9, 2019

Abstract

The imaging system has two lenses coupled together, wherein both lenses face different sides of the device body. Each lens has a separate image sensor; for example, the first lens is for the front side camera and the second lens is for the back side camera. A single actuator moves both lenses simultaneously. Depending on the imaging direction, either the front side image sensor or the back side image sensor is activated and an image is received through the corresponding lens system. The actuator generates autofocus or image stabilization functions for both cameras.

First claim

The invention claimed is:

1. An imaging apparatus comprising:
a body having a first side facing a first direction and a second side facing an opposite direction of the first direction;
a lens carrier;
a first lens mounted to the lens carrier and configured to receive light from the first side of the body from the first direction;
a second lens mounted to the lens carrier and configured to receive light from the second side of the body from the opposite direction of the first direction;
magnets mounted to the lens carrier in between the first lens and the second lens;
an electromagnetic coil mounted to the body and positioned in between the first lens and the second lens and
an optical control element configured to move the first lens in the first direction and the second lens in the opposite direction through supplying the electromagnetic coil with current to create electromagnetic forces with the magnets.

2. An imaging apparatus according to claim 1 , further comprising a first image sensor configured to receive light from the direction of the first lens and a second image sensor configured to receive light from the direction of the second lens.

3. An imaging apparatus according to claim 1 , wherein the imaging apparatus comprises a smartphone.

4. An imaging apparatus according to claim 1 , wherein a direction of movement for the first lens is dictated by the polarity of the current supplied by the optical control element.

5. An imaging apparatus according to claim 1 , wherein the electromagnetic coil receiving the current causes an actuator to move in response to an optical image stabilization element.

6. An imaging apparatus according to claim 1 , further comprising a barrel actuator.

7. An imaging apparatus according to claim 1 , wherein the the optical control element comprises a hardware driver for supplying the current.

8. An imaging apparatus according to claim 1 , wherein the electromagnetic coil is positioned between two of the magnets.

9. An apparatus comprising a body having a first side and a second side and a lens carrier, the apparatus comprising:
a first lens mounted to the lens carrier, facing a first direction, and configured to receive light from a first optical axis to allow light to travel to a first image sensor;
a second lens mounted to the carrier, facing an opposite direction of the first direction, and configured to receive light from a second optical axis to travel to a second image sensor;
magnets mounted to the lens carrier in between the first lens and the second lens;
an electromagnetic coil mounted to the body and positioned in between the magnets; and
an optical control element configured to move the first lens in the first direction and the second lens in the opposite direction through supplying the electromagnetic coil with current to create electromagnetic forces with the magnets.

10. An apparatus according to claim 9 , wherein the optical control element comprises a hardware driver for supplying the current.

11. An apparatus according to claim 9 , wherein the magnets comprise two magnets.

12. An apparatus according to claim 9 , wherein different polarity of the current causes the electromagnet coil to move the first lens in the opposite direction.

13. An apparatus according to claim 9 , wherein the apparatus comprises a smartphone.

14. An apparatus according to claim 9 , comprising:
a group of lenses comprising at least the first lens and the second lens;
wherein the magnets are configured to move the group of lenses.

15. A system comprising:
a body having a first side and a second side;
a lens carrier;
a first lens mounted to the lens carrier, facing a first direction, and configured to receive light from a first side of the body;
a second lens mounted in the lens carrier, facing an opposite direction of the first direction, and configured to receive light from a second side of the body;
magnets mounted to the lens carrier in between the first lens and the second lens;
an electromagnetic coil mounted to the body between the first lens and the second lens; and
an optical control element configured to move the first lens in the first direction and the second lens in the opposite direction through supplying the electromagnetic coil with current to create electromagnetic forces with the magnets.

16. A system according to claim 15 , comprising a first image sensor configured to receive light from the first direction of the first lens and a second image sensor configured to receive light from the opposite direction of the second lens.

17. A system according to claim 15 , further comprising a barrel actuator.

18. A system according to claim 15 , wherein the optical control element is configured to supply the current for moving the first lens in the first direction to maintain an image object in focus.

19. A system according to claim 15 , wherein the magnets comprises two magnets.

20. A system according to claim 15 , comprising:
a group of lenses comprising at least the first lens and the second lens;
wherein the optical control element comprises a hardware driver for supplying the current.

Assignees

• Microsoft Technology Licensing Llc

Inventors

• Eromäki Marko

Classifications

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• H04N23/681

  Motion detection · CPC title

• G02B7/08 Primary

  adapted to co-operate with a remote control mechanism · CPC title

• H04N23/90 Primary

  Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums · CPC title

• H04N5/23251

  Electricity · mapped topic