DISTANCE METER, DISTANCE MEASUREMENT METHOD, THICKNESS GAUGE, AND THICKNESS MEASUREMENT METHOD

To provide a distance meter, a distance measurement method, a thickness gauge and a thickness measurement method with which it is possible to measure the thickness or distance with good accuracy even under an environment where a problem with light transmission exists.SOLUTION: Provided is a distance meter for measuring the distance to a measurement object 6, comprising: a transmit antenna (e.g., transmit antennas 31, 41) for irradiating the measurement object 6 with a radio wave as a transmit wave; a receive antenna (e.g., receive antennas 32, 42) capable of detecting the center path of a received wave of the transmitted wave having been reflected by the measurement object 6; and a computation unit for calculating, from the center path of the received wave and the center path of the transmitted wave, a measurement spot (e.g., a first and a second measurement point coordinate) which is the coordinates of the measurement object 6 by which the transmitted wave is reflected and calculating the distance to the measurement object 6.SELECTED DRAWING: Figure 3 【課題】通光に問題がある環境下でも精度よく、厚みまたは距離を測定することができる、距離計、距離測定方法、厚み計装置及び厚み測定方法を提供すること。【解決手段】、被測定物６までの距離を測定する距離計であって、被測定物６に電波を送信波として照射する送信アンテナ（例えば、送信アンテナ３１，４１）と、送信波が被測定物６で反射した受信波の中心経路を検出可能な受信アンテナ（例えば、受信アンテナ３２，４２）と、受信波の中心経路と送信波の中心経路とから、送信波が反射された被測定物６の座標である測定スポット（例えば、第１測定点座標、第２測定点座標）を算出し、被測定物６までの距離を算出する演算部と、を有する、距離計。【選択図】図３