Abstract: In a laser radar device, a light projector projects a laser beam to both a detection area outside the device and a reference optical member located inside the device. A light receiver receives a reflected light of the laser beam, converts the reflected light to an electrical received light waveform. A detection unit detects an object in the detection area based on the received light waveform. A determination unit obtains an electrical reference received light waveform from the light receiver by making the light projector project the laser beam to the reference optical member, at a first time and a second time elapsing from the first time. The determination unit further calculates a degree of changes between the reference received light waveforms acquired at the first and second times, and determines whether there is caused a failure in circuitry, based on the degree of changes.

Abstract: A laser radar device includes a laser diode and a photodiode. An optical isolator is disposed so as to tilt with respect to the optical axis of a laser beam by a predetermined angle, transmits a laser beam, and reflects reflected light toward the photodiode. A reflecting mirror is rotatably disposed around a center axis extending along the optical axis of the transmitted laser beam. A rotatable deflector, rotated by a motor, deflects a laser beam by the reflecting mirror toward the external space, and reflects reflected light from an object toward the optical isolator. When the side where the laser diode is disposed in the center axis direction is defined as the first side and the side opposite to the first side is defined as the second side, the motor is disposed at a position closer to the first side than the reflecting mirror.

Abstract: A monitoring system monitors entry of an object into a surrounding area of a robot. The monitoring system includes visible light irradiation section, a sensor section and a monitoring control unit. The visible light irradiation section irradiates visible light from a level higher than that of the robot toward at least an outer edge portion of at least one of an operating area, which is set up to enclose a movable range of the robot, and a predetermined area which is set up around the operating area. The sensor section monitors entry of a new object, which is not registered in advance, into the operating area. The monitoring control unit issues a request for stopping the robot to a robot control unit that controls the robot, when entry of a new object into the operating area is detected by the sensor section.

Abstract: A laser radar apparatus that includes a rotating mirror is provided. The rotating mirror has a reflective area that reflects outgoing laser light. A flat reflective surface that forms a flat planar shape is formed in a center portion of the reflective area. A sloped reflective surface is formed in a peripheral portion of the center portion of the reflective area, the sloped reflective surface spreading the outgoing laser light incident on the peripheral portion to a periphery of an optical axis of outgoing laser light emitted from the flat reflective surface.

Abstract: A laser radar device includes a laser diode and a photodiode. An optical isolator is disposed so as to tilt with respect to the optical axis of a laser beam by a predetermined angle, transmits a laser beam, and reflects reflected light toward the photodiode. A reflecting mirror is rotatably disposed around a center axis extending along the optical axis of the transmitted laser beam. A rotatable deflector, rotated by a motor, deflects a laser beam by the reflecting mirror toward the external space, and reflects reflected light from an object toward the optical isolator. When the side where the laser diode is disposed in the center axis direction is defined as the first side and the side opposite to the first side is defined as the second side, the motor is disposed at a position closer to the first side than the reflecting mirror.

Abstract: A laser radar apparatus that includes a rotating mirror is provided. The rotating mirror has a reflective area that reflects outgoing laser light. A flat reflective surface that forms a flat planar shape is formed in a center portion of the reflective area. A sloped reflective surface is formed in a peripheral portion of the center portion of the reflective area, the sloped reflective surface spreading the outgoing laser light incident on the peripheral portion to a periphery of an optical axis of outgoing laser light emitted from the flat reflective surface.

Abstract: A monitoring system monitors entry of an object into a surrounding area of a robot. The monitoring system includes visible light irradiation section, a sensor section and a monitoring control unit. The visible light irradiation section irradiates visible light from a level higher than that of the robot toward at least an outer edge portion of at least one of an operating area, which is set up to enclose a movable range of the robot, and a predetermined area which is set up around the operating area. The sensor section monitors entry of a new object, which is not registered in advance, into the operating area. The monitoring control unit issues a request for stopping the robot to a robot control unit that controls the robot, when entry of a new object into the operating area is detected by the sensor section.