A power supply circuit and a power supply method for a camera and an electronic device are provided. The camera is detachably connected to a body of the electronic device, a power source is arranged in the body, and the circuit includes: a first power supply pin and a second power supply pin that are arranged on the body; a power source pin and a ground pin that are arranged on the camera, where in a case that the camera is mounted at a preset position of the body, the power source pin is in contact with one of the first power supply pin and the second power supply pin, and the ground pin is in contact with the other of the first power supply pin and the second power supply pin; a first switch.

A power supply circuit and a power supply method for a camera and an electronic device are provided. The camera is detachably connected to a body of the electronic device, a power source is arranged in the body, and the circuit includes: a first power supply pin and a second power supply pin that are arranged on the body; a power source pin and a ground pin that are arranged on the camera, where in a case that the camera is mounted at a preset position of the body, the power source pin is in contact with one of the first power supply pin and the second power supply pin, and the ground pin is in contact with the other of the first power supply pin and the second power supply pin; a first switch.

A roof mounted vehicle camera assembly includes a disk that can be positioned on a roof of a vehicle. A magnet is coupled to the disk to magnetically engage the roof of the vehicle for retaining the disk on the roof of the vehicle. A rod is coupled to and extends upwardly from the disk and an orb is coupled to the rod such that the orb is elevated above the roof of the vehicle when the disk is positioned on the roof of the vehicle. A pair of proximity sensors is each of the proximity sensors is integrated into the orb and a camera is integrated into the orb. A transmitter is integrated into the disk and the transmitter is in wireless communication with an extrinsic electronic device to facilitate imagery captured by the camera to be viewed on the extrinsic electronic device thereby facilitating a driver of the vehicle to view the imagery.

A roof mounted vehicle camera assembly includes a disk that can be positioned on a roof of a vehicle. A magnet is coupled to the disk to magnetically engage the roof of the vehicle for retaining the disk on the roof of the vehicle. A rod is coupled to and extends upwardly from the disk and an orb is coupled to the rod such that the orb is elevated above the roof of the vehicle when the disk is positioned on the roof of the vehicle. A pair of proximity sensors is each of the proximity sensors is integrated into the orb and a camera is integrated into the orb. A transmitter is integrated into the disk and the transmitter is in wireless communication with an extrinsic electronic device to facilitate imagery captured by the camera to be viewed on the extrinsic electronic device thereby facilitating a driver of the vehicle to view the imagery.

A shutter device includes a base plate including an opening, a blade unit configured to switch a state of the opening, a driving member configured to drive the blade unit, a motor, a decelerator configured to decelerate power from the motor, a first connector engaged with the decelerator, a second connector having one end attached to the driving member and another attached to the first connector, a first position detector configured to detect passage through a predetermined position in a moving locus of the driving member or the first connector, and a second position detector configured to detect a relative difference from the first position detector. The blade unit switches the state of the opening from the closed state to the opened state by continuous rotation of the first connector. Driving of the motor is controlled based on results of the detection by the first and second position detectors.

A shutter device includes a base plate including an opening, a blade unit configured to switch a state of the opening, a driving member configured to drive the blade unit, a motor, a decelerator configured to decelerate power from the motor, a first connector engaged with the decelerator, a second connector having one end attached to the driving member and another attached to the first connector, a first position detector configured to detect passage through a predetermined position in a moving locus of the driving member or the first connector, and a second position detector configured to detect a relative difference from the first position detector. The blade unit switches the state of the opening from the closed state to the opened state by continuous rotation of the first connector. Driving of the motor is controlled based on results of the detection by the first and second position detectors.

A shutter device includes a base plate including an opening, a blade unit configured to switch a state of the opening, a driving member configured to drive the blade unit, a motor, a decelerator configured to decelerate power from the motor, a first connector engaged with the decelerator, a second connector having one end attached to the driving member and another attached to the first connector, a first position detector configured to detect passage through a predetermined position in a moving locus of the driving member or the first connector, and a second position detector configured to detect a relative difference from the first position detector. The blade unit switches the state of the opening from the closed state to the opened state by continuous rotation of the first connector. Driving of the motor is controlled based on results of the detection by the first and second position detectors.

A shutter device includes a base plate including an opening, a blade unit configured to switch a state of the opening, a driving member configured to drive the blade unit, a motor, a decelerator configured to decelerate power from the motor, a first connector engaged with the decelerator, a second connector having one end attached to the driving member and another attached to the first connector, a first position detector configured to detect passage through a predetermined position in a moving locus of the driving member or the first connector, and a second position detector configured to detect a relative difference from the first position detector. The blade unit switches the state of the opening from the closed state to the opened state by continuous rotation of the first connector. Driving of the motor is controlled based on results of the detection by the first and second position detectors.

A shutter apparatus includes a front blade unit and a rear blade unit configured to open and close an opening for exposure control, a front drive member and a rear drive member configured to drive the front blade unit and the rear blade unit between an open position and a closed position of the opening, respectively, a front cam gear and a rear cam gear configured to charge the front drive member and the rear drive member, respectively, a front driving source and a rear driving source connected to and configured to rotate the front cam gear and the rear cam gear, respectively, and a controller configured to control the front driving source and the rear driving source based on an imaging condition so as to change driving times of the front blade unit and the rear blade unit.

Provided are a camera system, an interchangeable lens, a camera, and a power supply method of a camera system capable of simplifying a configuration. In a camera system (1) comprising a camera (10) and an interchangeable lens (100), a plurality of pieces of lens-drive power (VL1 to VL3) having different voltages are supplied from the camera (10) to the interchangeable lens (100). The interchangeable lens (100) drives a plurality of optical member drive units such as a focus drive unit and a stop drive unit using the plurality of supplied pieces of lens-drive power (VL1 to VL3). Further, system power for operating a lens microcomputer (114) is generated using the lens-drive power (VL1) having the lowest voltage among the plurality of supplied pieces of lens-drive power (VL1 to VL3).