| 摘要 |
The present invention aims to provide a distance measuring apparatus which can achieve reduction in cost and size and perform measurement ranging from short-distance to long-distance accurately. For this purpose, the distance measuring apparatus of the present invention includes an unit (11 to 13) outputting first pulsed light L1 to a measurement object, an unit (16, 17) detecting first pulsed light L2 reflected by the measurement object to output a signal responsive to an intensity variation thereof, a measuring unit (18, 20) measuring a time difference between output and detection of the first pulsed light during a period when an intensity of the signal is larger than a predetermined value, a measuring unit (18, 21) measuring the time difference at a time when an intensity of the signal varies from less than a predetermined value to the predetermined value or more, and an unit (24, 25) calculating a distance to the measurement object using a time difference measured by at least one of the two measuring units. |
