Imaging device and electronic apparatus
The present technology relates to an imaging device and an electronic apparatus capable of adjusting a focus position and an image stabilization position with high accuracy. There are provided a lens that converges object light, an imaging element that photoelectrically converts the object light received from the lens, a circuit base that includes a circuit configured to output a signal received from the imaging element to an outside, an actuator that drives the lens with a PWM (Pulse Width Modulation) waveform in at least either one of an X-axis direction and a Y-axis direction, and plural detection units that are so disposed as to face plural first coils included in the actuator, and detect magnetic fields generated by the first coils. The present technology is applicable to an imaging device.
1. An imaging device comprising:
a lens that converges object light;
an imaging element that photoelectrically converts the object light received from the lens;
a circuit base that includes a circuit configured to output a signal received from the imaging element to an outside;
an actuator that drives the lens with a PWM (Pulse Width Modulation) waveform in at least either one of an X-axis direction and a Y-axis direction, wherein driving of the PWM waveform is synchronized with a driving signal of the imaging element; and
a plurality of detection units that are so disposed as to face a plurality of first coils included in the actuator, and detect magnetic fields generated by the first coils, wherein each of the plurality of detection units is larger than each of the plurality of first coils.
2. The imaging device according to claim 1 , wherein
the actuator drives the lens to reduce an effect of hand-vibration.
3. The imaging device according to claim 2 , wherein
the actuator also drives the lens in a Z-axis direction that is a direction for shifting a focus.
4. The imaging device according to claim 1 , wherein
each of the plurality of detection units detects induced electromotive force generated by the magnetic fields.
5. The imaging device according to claim 4 , wherein
each of the plurality of detection units detects a position of the lens on a basis of the induced electromotive force.
6. The imaging device according to claim 1 , wherein
each of the plurality of detection units detects a position of the lens in a Z-axis direction on a basis of an integrated value obtained by integrating dielectric electromotive force detected by the plurality of detection units.
7. The imaging device according to claim 1 , wherein
each of the plurality of detection units detects inclination of the lens.
8. The imaging device according to claim 1 , wherein
each of the plurality of detection units detects rotation of the lens.
9. The imaging device according to claim 1 , wherein
each of the plurality of detection units includes a second coil, and
center positions of the first coils and center positions of the second coils are not aligned with each other.
10. The imaging device according to claim 9 , wherein
the second coils are asymmetrically disposed with respect to an optical center.
11. The imaging device according to claim 9 , wherein
magnets are so provided as to face the first coils, and
the second coils are located between the first coils and the magnets.
12. An electronic apparatus comprising:
an imaging device including:
a lens that converges object light;
an imaging element that photoelectrically converts the object light received from the lens;
a circuit base that includes a circuit configured to output a signal received from the imaging element to an outside;
an actuator that drives the lens with a PWM (Pulse Width Modulation) waveform in at least either one of an X-axis direction and a Y-axis direction, wherein driving of the PWM waveform is synchronized with a driving signal of the imaging element; and
a plurality of detection units that are so disposed as to face a plurality of first coils included in the actuator, and detect magnetic fields generated by the first coils, wherein each of the plurality of detection units is larger than each of the plurality of first coils.