Dynamic Flex Circuit for Camera With Moveable Image Sensor

Patent metadata

Field	Value
Publication number	US-2021092297-A1
Application number	US-202017025957-A
Country	US
Kind code	A1
Filing date	Sep 18, 2020
Priority date	Sep 25, 2019
Publication date	Mar 25, 2021
Grant date	—

Abstract

Various embodiments include a dynamic flex circuit that may be used in a camera with a moveable image sensor. The dynamic flex circuit may include one or more fixed end portions, a moveable end portion, and an intermediate portion. In some embodiments, the fixed end portion may be connected to another flex circuit of the camera. The moveable end portion may be coupled with the moveable image sensor. The intermediate portion may be configured to allow the moveable end portion to move with the moveable image sensor. Some embodiments include a reinforcement arrangement that reinforces one or more portions of the dynamic flex circuit.

First claim

What is claimed is:

1 . A camera, comprising:
one or more optical elements; an image sensor to capture light that has passed through the one or more optical elements; an actuator to move the image sensor relative to the one or more optical elements; a stationary structure; and a flex circuit, comprising:
a fixed end portion fixedly attached to the stationary structure;
a moveable end portion coupled with the image sensor such that the moveable end portion moves with the image sensor relative to the fixed end portion; and
an intermediate portion that extends from the fixed end portion to the moveable end portion and that allows the moveable end portion to move with the image sensor, wherein the intermediate portion comprises:
straight regions; and
one or more bend regions at which the flex circuit bends, wherein the one or more bend regions comprise a bend region that interconnects two of the straight regions with one another;

wherein the camera is configured to convey electrical signals between the stationary structure and the image sensor via the flex circuit.

2 . The camera of claim 1 , wherein:
the bend region is a first bend region at which the flex circuit bends about a first axis; and the one or more bend regions further comprise:
a second bend region at which the flex circuit bends about a second axis that intersects the first axis.

3 . The camera of claim 2 , wherein:
the straight regions comprise:
a first straight region extending in a first direction; and
a second straight region extending in a second direction different from the first direction; and
the first bend region interconnects the first straight region with the second straight region.

4 . The camera of claim 3 , wherein:
the flex circuit comprises one or more flex circuit materials; and the camera further comprises:
a reinforcement arrangement at the first bend region that reinforces the first bend region relative to each of the first straight region and the second straight region, the reinforcement arrangement comprising at least one of:
a contiguous strip of at least one flex circuit material of the one or more flex circuit materials that is wider at the first bend region than respective contiguous strips of the at least one flex circuit material at the first straight region and the second straight region; or
an additional layer of material attached to the one or more flex circuit materials at the bend region such that at least a portion of the bend region is thicker than each of the first straight region and the second straight region.

5 . The camera of claim 1 , wherein:
the image sensor defines a plane; and the actuator is configured to move the image sensor in directions orthogonal to the plane and parallel to the plane.

6 . The camera of claim 1 , further comprising:
a substrate attached to the image sensor; wherein:
the moveable end portion of the flex circuit is attached to the substrate; and
the substrate is configured to convey the electrical signals between the moveable end portion and the image sensor.

7 . The camera of claim 1 , wherein:
the fixed end portion is a first fixed end portion positioned proximate a first side of the camera; the flex circuit further comprises a second fixed end portion positioned proximate a second side of the camera opposite the first side; and the first fixed end and the second fixed end provide electrical connections between the flex circuit and another flex circuit.

8 . A device, comprising:
one or more processors; memory storing program instructions executable by the one or more processors to control operation of a camera; and the camera, comprising:
one or more optical elements;
an image sensor to capture light that has passed through the one or more optical elements;
an actuator to move the image sensor relative to the one or more optical elements;
a stationary structure that is stationary relative to movement of the image sensor; and
a flex circuit, comprising:
a fixed end portion fixedly attached to the stationary structure;
a moveable end portion coupled with the image sensor such that the moveable end portion moves with the image sensor relative to the fixed end portion; and
an intermediate portion that allows the moveable end portion to move with the image sensor and that conveys electrical signals between the fixed end portion and the moveable end portion, wherein the intermediate portion comprises:
straight regions; and
one or more bend regions at which the flex circuit bends, wherein the one or more bend regions comprise a bend region that interconnects two of the straight regions with one another.

9 . The device of claim 8 , wherein:
the image sensor defines a plane; and the one or more processors are configured to cause the actuator to move the image sensor in directions orthogonal to the plane and parallel to the plane.

10 . The device of claim 8 , wherein:
the bend region is a first bend region at which the flex circuit bends about a first axis; and the one or more bend regions further comprise:
a second bend region at which the flex circuit bends about a second axis that intersects the first axis; and
a third bend region at which the flex circuit bends about a third axis that is parallel to the first axis or the second axis.

11 . The device of claim 10 , wherein:
the straight regions comprise:
a first straight region extending in a first direction; and
a second straight region extending in a second direction different from the first direction; and
the first bend region interconnects the first straight region with the second straight region.

12 . The device of claim 11 , wherein:
the flexible circuit comprises one or more flex circuit materials; and a contiguous strip of at least one flex circuit material of the one or more flex circuit materials at the first bend region is wider than respective contiguous strips of the at least one flex circuit material at the first straight region and the second straight region, so as to reinforce the bend region relative to each of the first straight region and the second straight region.

13 . The device of claim 11 , wherein:
the flexible circuit comprises one or more flex circuit materials; and the camera further comprises:
a reinforcement layer of material attached to the one or more flex circuit materials at the bend region such that at least a portion of the first region is thicker than at least one of the first straight region or the second straight region.

14 . The device of claim 8 , wherein the one or more optical elements comprise:
an optical element to fold a path of the light before the light reaches the image sensor; wherein the image sensor is positioned between the optical element and the moveable end portion of the flex circuit.

15 . The device of claim 8 , wherein the camera further comprises:
a suspension arrangement that suspends the image sensor from a base structure and that allows the image sensor to move relative to the base structure; wherein at least a portion of the flex circuit is spaced apart from the suspension arrangement.

16 . A flex circuit for a camera, the flex circuit comprising:
a fixed end portion to attach to a stationary structure of the camera; a moveable end portion to couple with a moveable image sensor of the camera, wherein an actuator of the camera is to move the moveable image sensor relative to one or more optical elements of the camera; and an intermediate portion to convey electrical signals between the fixed end portion and

Assignees

• Apple Inc

Inventors

• Smyth Nicholas D
• Ouyang Jian
• Miller Scott W

Classifications

• H04N23/54 Primary

  Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils · CPC title

• H05K1/028 Primary

  Bending or folding regions of flexible printed circuits (H05K1/0283 takes precedence) · CPC title

• H04N23/687 Primary

  by shifting the lens or sensor position · CPC title

• H04N23/67

  Focus control based on electronic image sensor signals · CPC title

• H04N23/68

  for stable pick-up of the scene, e.g. compensating for camera body vibrations · CPC title