Deflector, optical scanner, and scanning distance measuring equipment

An optical scanner comprising a deflector including:

• a first deflection mechanism including a movable unit swingable about a first axis and a drive unit for driving to swing the movable unit;
• a second deflection mechanism for driving to rotate the first deflection mechanism about a second axis different from the first axis;
• a contactless power supply unit including a second coil that is electrically connected to the drive unit and is located to rotate about the second axis along with the rotating second deflection mechanism, and a first coil that is located to face the second coil on a common axis, the contactless power supply unit for supplying power from the first coil to the second coil in accordance with an electromagnetic induction system;
• a light emitter/receiver located on the second axis;
• a light deflecting unit provided at the movable unit, for deflecting and reflecting measurement light emitted from the light emitter/receiver along the second axis and guiding, to the light emitter/receiver, light reflected by an object out of the measurement light thus deflected and reflected;
• a reference reflection member irradiated with the measurement light emitted from the light emitter/receiver and deflected and reflected by the light deflecting unit;
• and
• a swing controller for controlling the drive unit in accordance with reflected light from the reference reflection member and received by the light emitter/receiver.

Scanning distance measuring equipment comprising a deflector including:

• a first deflection mechanism including a movable unit swingable about a first axis and a drive unit for driving to swing the movable unit;
• a second deflection mechanism for driving to rotate the first deflection mechanism about a second axis different from the first axis;
• a contactless power supply unit including a second coil that is electrically connected to the drive unit and is located to rotate about the second axis along with the rotating second deflection mechanism, and a first coil that is located to face the second coil on a common axis, the contactless power supply unit for supplying power from the first coil to the second coil in accordance with an electromagnetic induction system;
• a light emitter/receiver located on the second axis;
• a light deflecting unit, provided at the movable unit, for deflecting and reflecting measurement light emitted from the light emitter/receiver along the second axis and guiding, to the light emitter/receiver, light reflected by an object out of the measurement light thus deflected and reflected;
• a reference reflection member irradiated with the measurement light emitted from the light emitter/receiver and deflected and reflected by the light deflecting unit;
• and
• a swing controller for controlling the drive unit in accordance with reflected light from the reference reflection member and received by the light emitter/receiver.