Camera module and camera-equipped device
A camera module has: a lens holder for holding a lens unit; an image sensor holding unit that is arranged spaced apart from the lens holder in a first direction along the optical axis of the lens unit and holds an image sensor; and a drive unit that moves the image sensor holding unit with respect to the lens holder in a second direction and a third direction which are perpendicular to the optical axis and are perpendicular to each other, and that rotates the image sensor holding unit around the optical axis.
1. A camera module comprising:
a lens holder that holds a lens part;
an image sensor board that holds an image sensor, the image sensor board being disposed apart from the lens holder in a first direction along an optical axis of the lens part;
a driving part that includes a driving coil and a driving magnet that cooperate to move the image sensor holding part in a second direction and a third direction with respect to the lens holder and rotates the image sensor board in an around axis direction about the optical axis with respect to the lens holder, the second direction and the third direction each being orthogonal to the optical axis and being orthogonal to each other;
a fixed part that includes a lens holder housing part having an opening through which an optical axis passes and housing the lens holder in a state such that the lens holder is positioned so as not to be movable in the second direction or the third direction and not to be rotatable in the around axis direction; and
a support part that includes a plurality of elastic arms bridging the fixed part and the image sensor board and having an elasticity in a movable direction of the image sensor board and that supports the image sensor board so that the image sensor board is movable in the second direction and the third direction with respect to the fixed part and rotatable in the around axis direction with respect to the fixed part, wherein
each elastic arm is connected to the fixed part and the image sensor board at both ends of each elastic arm, and the plurality of elastic arms are bent in one circumferential direction in such a way that each elastic arm surrounds a periphery of the image sensor board between the both ends.
2. The camera module according to claim 1 , wherein:
the support part supports the image sensor board so that the image sensor board is movable in the first direction with respect to the fixed part.
3. The camera module according to claim 1 , wherein:
the plurality of elastic arms includes
an upper part including at least one of the plurality of elastic arms, the at least one elastic arm being disposed relatively on a front surface side of the image sensor board, and
a lower part including at least one of the plurality of elastic arms, the at least one elastic arm being disposed relatively on a back surface side of the image sensor board.
4. The camera module according to claim 1 , wherein:
each elastic arm includes a second-direction extending part extending linearly in the second direction and a third-direction extending part extending linearly in the third direction with a bent part as a boundary.
5. A camera-mounted device that is an information device or a transporting device, the camera-mounted device comprising:
the camera module according to claim 1 ; and
circuitry configured to process image information obtained by the image sensor.
6. A camera module comprising:
a lens holder that holds a lens part;
an image sensor board that holds an image sensor, the image sensor board being disposed apart from the lens holder in a first direction along an optical axis of the lens part;
a driving part that includes a driving coil and a driving magnet that cooperate to move the image sensor holding part in a second direction and a third direction with respect to the lens holder and rotates the image sensor board in an around axis direction about the optical axis with respect to the lens holder, the second direction and the third direction each being orthogonal to the optical axis and being orthogonal to each other;
a fixed part that includes a lens holder housing part having an opening through which an optical axis passes and housing the lens holder in a state such that the lens holder is positioned so as not to be movable in the second direction or the third direction and not to be rotatable in the around axis direction; and
a support part that includes a plurality of compression coil springs and that supports the image sensor board so that the image sensor board is movable in the second direction and the third direction with respect to the fixed part and rotatable in the around axis direction with respect to the fixed part, wherein
each compression coil spring is connected to the fixed part and the image sensor board at both ends of each compression coil spring, and disposed so that a central axis of a coil of each compression coil spring is arranged along the second direction or the third direction between the both ends.
7. The camera module according to claim 6 , wherein:
the support part supports the image sensor board so that the image sensor board is movable in the first direction with respect to the fixed part.
8. A camera-mounted device that is an information device or a transporting device, the camera-mounted device comprising:
the camera module according to claim 6 ; and
circuitry configured to process image information obtained by the image sensor.
9. A camera module comprising:
a lens holder that holds a lens part;
an image sensor board that holds an image sensor, the image sensor board being disposed apart from the lens holder in a first direction along an optical axis of the lens part;
a driving part that includes a driving coil and a driving magnet that cooperate to move the image sensor holding part in a second direction and a third direction with respect to the lens holder and rotates the image sensor board in an around axis direction about the optical axis with respect to the lens holder, the second direction and the third direction each being orthogonal to the optical axis and being orthogonal to each other; and
a fixed part that includes a lens holder housing part having an opening through which an optical axis passes and housing the lens holder in a state such that the lens holder is positioned so as not to be movable in the second direction or the third direction and not to be rotatable in the around axis direction, wherein
the driving magnet is disposed in the fixed part and the driving coil is disposed in the image sensor board, and
the driving coil includes
a second-direction driving coil which moves the image sensor board in the second direction,
a third-direction driving coil which moves the image sensor board in the third direction, and
at least one around-axis-direction driving coil which rotates the image sensor board in the around axis direction.
10. The camera module according to claim 9 , further comprising:
a support part that extends to connect with the fixed part and the image sensor board at both ends and that supports the image sensor board so that the image sensor board is movable in the second direction and the third direction with respect to the fixed part and rotatable in the around axis direction with respect to the fixed part.
11. The camera module according to claim 9 wherein:
the support part supports the image sensor board so that the image sensor board is movable in the first direction with respect to the fixed part.
12. The camera module according to claim 9 , wherein:
the support part includes an elastic bridging part which bridges the fixed part and the image sensor board, the elastic bridging part having elasticity in a movable direction of the image sensor holding part.
13. The camera module according to claim 12 , wherein:
the elastic bridging part includes a plurality of elastic arms, wherein
each elastic arm is connected to the fixed part and the image sensor board at both ends of each elastic arm, and the plurality of elastic arms are bent in one circumferential direction in such a way that each elastic arm surrounds a periphery of the image sensor board between the both ends.
14. The camera module according to claim 13 , wherein:
the elastic bridging part includes
an upper part including at least one of the plurality of elastic arms, the at least one elastic arm being disposed relatively on a front surface side of the image sensor board, and
a lower part including at least one of the plurality of elastic arms, the at least one elastic arm being disposed relatively on a back surface side of the image sensor board.
15. The camera module according to claim 13 , wherein:
each elastic arm includes a second-direction extending part extending linearly in the second direction and a third-direction extending part extending linearly in the third direction with a bent part as a boundary.
16. The camera module according to claim 9 , wherein:
the image sensor board is in a rectangular shape, wherein
the at least one around-axis-direction driving coil includes two or more around-axis-direction driving coils which are disposed at diagonal positions of the image sensor board.
17. The camera module according to claim 9 , wherein:
the driving magnet is used for both of rotating the image sensor board in the around axis direction and moving the image sensor board in the second direction or the third direction.
18. The camera module according to claim 9 , wherein:
the driving magnet is used for both of rotating the image sensor board in the around axis direction and moving the image sensor board or the lens holder in the first direction.
19. The camera module according to claim 9 , wherein:
the driving magnet is used for all of rotating the image sensor board in the around axis direction, moving the image sensor board in the second direction or the third direction, and moving the image sensor board or the lens holder in the first direction.
20. A camera-mounted device that is an information device or a transporting device, the camera-mounted device comprising:
the camera module according to claim 9 ; and
circuitry configured to process image information obtained by the image sensor.