Abstract: A reception unit 2 of a detection unit 3 includes a transmitter 30 that transmits a reception (detection) level of an infrared beam to a transmission unit 1, and a demand signal output unit 26 that transmits to the transmission unit 1 a demand signal M, demanding to control the intensity of the infrared beam to be transmitted so that the reception level matches a predetermined value. The transmission unit 1 includes an infrared ray (detection beam) intensity control unit 15 that controls, upon receipt of the demand signal M, the intensity of the infrared beam to be transmitted so that the reception level matches the predetermined value. A power source unit 31 is a solar battery unit including a solar panel and a charging medium that stores power from the solar panel.

Abstract: To provide an object detection device that requires neither the optical adjustment nor the detection area adjustment after the replacement of the battery, the object detection device includes a sensor body, inclusive of a detection element, and a storage enclosure positioned in part or in its entirety in a rear surface of the sensor body, and has a transmitter accommodation portion for accommodating therein a transmitter for wirelessly transmitting an output signal from the sensor body, a battery holding portion for holding a battery for providing the sensor body and the transmitter with an electric power, in which the battery holding portion includes a holding portion opening unit to open the battery holding portion to thereby enable a replacement of the battery, then retained in the battery holding portion, in a condition in which the sensor body is not separated from the storage enclosure.

Abstract: A reception unit 2 of a detection unit 3 includes a transmitter 30 that transmits a reception (detection) level of an infrared beam to a transmission unit 1, and a demand signal output unit 26 that transmits to the transmission unit 1 a demand signal M, demanding to control the intensity of the infrared beam to be transmitted so that the reception level matches a predetermined value. The transmission unit 1 includes an infrared ray (detection beam) intensity control unit 15 that controls, upon receipt of the demand signal M, the intensity of the infrared beam to be transmitted so that the reception level matches the predetermined value. A power source unit 31 is a solar battery unit including a solar panel and a charging medium that stores power from the solar panel.

Abstract: To provide a sighting device for use in a security sensor system, in which device enables an operator, assigned to conduct a sighting work, to look into the sighting device from a proper direction. The sighting device includes an eyepiece lens provided with a microlens, an objective lens provided with a first marker encompassed within the field of view of the eyepiece lens, and a reflecting mirror disposed on an optical path between the eyepiece lens and the objective lens. The first marker is comprised of a circular contour line or a polygonal contour line and is so set that when a viewing axis offsets from a tolerance, the first marker is viewed with a part thereof dropped out having been offset from the field of view of the microlens.

Abstract: To provide an object detection device that requires neither the optical adjustment nor the detection area adjustment after the replacement of the battery, the object detection device includes a sensor body, inclusive of a detection element, and a storage enclosure positioned in part or in its entirety in a rear surface of the sensor body, and has a transmitter accommodation portion for accommodating therein a transmitter for wirelessly transmitting an output signal from the sensor body, a battery holding portion for holding a battery for providing the sensor body and the transmitter with an electric power, in which the battery holding portion includes a holding portion opening unit to open the battery holding portion to thereby enable a replacement of the battery, then retained in the battery holding portion, in a condition in which the sensor body is not separated from the storage enclosure.

Abstract: To provide an object detecting device having a capability of sufficiently adjusting the detection areas to suit to the environment in which it is installed, the object detecting device includes an antenna AT for emitting a detecting beam to the detection areas and receiving a portion of the detecting beam which has been reflected from the detection areas, and adjusting covers 6 and 7 covering a front portion of the antenna AT and operable to adjust respective figurations of the detection areas. The adjusting covers 6 and 7 are selectively fitted one at a time to the front portion of the antenna AT for defining a different figuration of the detection areas. When one of the adjusting covers, that is, the cover 6 that is formed with a pair of cutouts 63 and 63 for suppressing the side lobe of the detecting beam is selectively used, the detection areas can be defined having no unnecessary detection areas.

Abstract: To provide an object detecting device having a capability of sufficiently adjusting the detection areas to suit to the environment in which it is installed, the object detecting device includes an antenna AT for emitting a detecting beam to the detection areas and receiving a portion of the detecting beam which has been reflected from the detection areas, and adjusting covers 6 and 7 covering a front portion of the antenna AT and operable to adjust respective figurations of the detection areas. The adjusting covers 6 and 7 are selectively fitted one at a time to the front portion of the antenna AT for defining a different figuration of the detection areas. When one of the adjusting covers, that is, the cover 6 that is formed with a pair of cutouts 63 and 63 for suppressing the side lobe of the detecting beam is selectively used, the detection areas can be defined having no unnecessary detection areas.

Abstract: Cameras take images of a predetermined area around a door. A distance measurement unit measures a distance from the cameras to each object in the taken images. Based on the measured distance, a floor detection unit detects a floor, and an object height/position detection unit detects a height and position of any object other than the floor. A door position detection unit and a door position identification unit 57 specify position of the door (i.e. open or closed) in the images taken by the cameras. A judgement unit judges presence or absence of an object which is neither the floor nor the door. If an object other than the floor and the door is observed in the images taken by the cameras, an output unit produces an object detection signal, so that the door is kept in an open state.

Abstract: Cameras 51, 52 take images of a predetermined area around a door. A distance measurement unit 53 measures the distance to each object in the taken images. Based on the measured distance, a floor detection unit 54 detects a floor, and an object height/position detection unit 55 detects the height and position of any object other than the floor. A door position detection unit 56 and the door position identification unit 57 specify the position of the door (i.e. open or closed) on the images. A judgement unit 58 judges the presence or absence of an object which is neither the floor nor the door. If an object other than the floor and the door is observed in the images, an output unit 59 produces an object detection signal, so that the door is kept in an open state.

Abstract: A security sensor equipped with a sighting device in which respective optical axes of a beam projector and a beam receiver can be adjusted easily and quickly. The beam receiver A includes an adjustment (50) for adjusting the optical axis, a mirror-equipped sighting device (C) having a viewing window (12) through which viewing is possible from a lateral side of the beam receiver (A), a light emitting element (8) and a mirror (14) accommodated therein for presenting an image of the beam projector (B), and a lamp control (6) for changing a status of the light emitting element (8) in correspondence with the amount of light received from the beam projector (B).