Abstract: An installation assist apparatus according to an embodiment of the present disclosure includes hardware processor configured to: receive an input of installation positions of first and second optical wireless communication devices performing optical wireless communication and an input of an angle of elevation representing an inclination of an optical axis center line to a horizontal line, the optical axis center line connecting the first and second optical wireless communication devices; determine whether each of the first and second optical wireless communication devices is affected by solar light, the determination being carried out based on the installation positions of the devices, the angle of elevation, an influence angle representing a maximum value of an incident angle of solar light affecting the devices, and solar positions through a whole year; and cause a display device to display a result of the determination.

Abstract: A water level measuring system includes a distance sensor, a disturbance detecting unit, and a computation unit. The distance sensor is provided above a road and configured to output a sensor signal that includes a signal component representing a distance to a road surface of the road or a distance to an object present on the road surface. The disturbance detecting unit is configured to detect, from the sensor signal, a disturbance part acquired in a period in which a moving body is passing below the distance sensor. The computation unit is configured to compute a water level of water flooding the road based on the sensor signal from which the disturbance part has been eliminated.

Abstract: An installation assist apparatus according to an embodiment of the present disclosure includes hardware processor configured to: receive an input of installation positions of first and second optical wireless communication devices performing optical wireless communication and an input of an angle of elevation representing an inclination of an optical axis center line to a horizontal line, the optical axis center line connecting the first and second optical wireless communication devices; determine whether each of the first and second optical wireless communication devices is affected by solar light, the determination being carried out based on the installation positions of the devices, the angle of elevation, an influence angle representing a maximum value of an incident angle of solar light affecting the devices, and solar positions through a whole year; and cause a display device to display a result of the determination.

Abstract: A water level measuring system includes a distance sensor, a disturbance detecting unit, and a computation unit. The distance sensor is provided above a road and configured to output a sensor signal that includes a signal component representing a distance to a road surface of the road or a distance to an object present on the road surface. The disturbance detecting unit is configured to detect, from the sensor signal, a disturbance part acquired in a period in which a moving body is passing below the distance sensor. The computation unit is configured to compute a water level of water flooding the road based on the sensor signal from which the disturbance part has been eliminated.

Abstract: A millimeter wave radar includes an antenna unit including a plurality of antennas that receive millimeter waves, each of the antennas having a prescribed reception range from which the millimeter waves are incident on the antenna; and a signal processing unit that detects, on the basis of a difference between outputs of the plurality of antennas that have received millimeter waves, a moving object moving across the reception ranges of the plurality of antennas.

Abstract: A water level measuring device for measuring a water level on a road surface includes a reflection member disposed in the road surface, the reflection member having a reflection surface that is parallel to the road surface, the reflection surface having a greater reflectance with respect to a probing radio wave than the road surface; an antenna unit transmitting the probing radio wave toward the reflection surface, the antenna unit also receiving a reflected wave of the probing radio wave that has been reflected from the reflection surface or water over the reflection surface; and a measuring unit connected to the antenna unit, the measuring unit processing the reflected wave received by the antenna unit to calculate and determine the water level on the road surface based on a return time of the reflected wave.

Abstract: A millimeter wave radar includes an antenna unit including a plurality of antennas that receive millimeter waves, each of the antennas having a prescribed reception range from which the millimeter waves are incident on the antenna; and a signal processing unit that detects, on the basis of a difference between outputs of the plurality of antennas that have received millimeter waves, a moving object moving across the reception ranges of the plurality of antennas.

Abstract: A water level measuring device for measuring a water level on a road surface includes a reflection member disposed in the road surface, the reflection member having a reflection surface that is parallel to the road surface, the reflection surface having a greater reflectance with respect to a probing radio wave than the road surface; an antenna unit transmitting the probing radio wave toward the reflection surface, the antenna unit also receiving a reflected wave of the probing radio wave that has been reflected from the reflection surface or water over the reflection surface; and a measuring unit connected to the antenna unit, the measuring unit processing the reflected wave received by the antenna unit to calculate and determine the water level on the road surface based on a return time of the reflected wave.

Abstract: A method of manufacturing an optical disc includes molding a first disc substrate by a first mold simultaneously with a second disc substrate by a second mold while controlling the temperature of the first and second molds by passing a temperature-controlling medium through temperature controlling flow passages provided in the vicinity of a boundary between the first and second molds.

Abstract: A method of manufacturing an optical disc includes molding a first disc substrate by a first mold simultaneously with a second disc substrate by a second mold while controlling the temperature of the first and second molds by passing a temperature-controlling medium through temperature controlling flow passages provided in the vicinity of a boundary between the first and second molds.

Abstract: In an optical disc molding device, a heating medium from a low-temperature controller is made to flow in temperature controlling flow passages (passages 3a) formed at locations corresponding to boundary parts of two fixed molds 7 mounted parallel to each other on a fixed platen 3 and in temperature controlling flow passages (passages 6a) formed at locations corresponding to boundary parts of two movable molds 8 mounted parallel to each other on a movable platen 6 to supplement heat exchange.

Abstract: In an optical disc molding device, a heating medium from a low-temperature controller is made to flow in temperature controlling flow passages (passages 3a) formed at locations corresponding to boundary parts of two fixed molds 7 mounted parallel to each other on a fixed platen 3 and in temperature controlling flow passages (passages 6a) formed at locations corresponding to boundary parts of two movable molds 8 mounted parallel to each other on a movable platen 6 to supplement heat exchange.