DISTANCE MEASUREMENT DEVICE

• Main Author: HASHIMOTO YASUNORI
• Format: Patent
• Language: English; Japanese
• Published: 13.09.2018
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

PROBLEM TO BE SOLVED: To provide a distance measurement device capable of operating with a single camera, and being used even in a low-illuminance state.SOLUTION: A distance measurement device is provided with a near-infrared irradiation unit 6 configured to radiate near-infrared ray, and in a front view, a right half of a lens 2 is a visible light transmission lens 2A and a left half thereof is a dual path lens 2B. Then, a control unit 7 can measure a distance to an object with two methods: a method based on a blur amount and a method based on a horizontal shift amount, by imaging the object with the near-infrared ray radiated. Further, the distance measurement device is provided with a measurement method switching unit 8 configured to switch the two methods.SELECTED DRAWING: Figure 1 【課題】カメラが１台で済む上、低照度状態でも使用することができる距離測定装置を提供する。【解決手段】近赤外線を照射する近赤外線照射部６を設けるとともに、正面視でレンズ２の右半分を可視光透過レンズ２Ａとし、左半分をデュアルパスレンズ２Ｂとした。そして、制御部７は、近赤外線を照射させつつ対象物を撮像することにより、ボケ量にもとづいた方法と、水平シフト量にもとづいた方法との二つの方法で対象物までの距離を測定可能とした。さらに、それら二つの方法を切り替える測定方法切替部８を設けた。【選択図】図１