INCLINATION ANGLE MEASUREMENT UNIT

• Main Authors: FURUYA OSAMU, MATSUTANI IWAO
• Format: Patent
• Language: English; Japanese
• Published: 07.03.2024
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

To provide an inclination angle measurement unit which can increase the resolution to an angle of inclination and can secure the stability of output to disturbance vibrations.SOLUTION: An inclination angle measurement unit 1 includes a housing 2, a radiation light source 3, a light reception unit 5, a lens 4, and a calculation unit for calculating the angle of inclination of the housing 2 to a vertical direction on the basis of an electric signal output from the light reception unit 5. The lens 4 has a concave lens 16 formed by making a concave surface 16A face the radiation light source 3 and a ball lens 15 put on the concave surface 16A. In a space surrounded by the concave surface 16A of the concave lens 16 and the inner surface of the housing 2, a viscous fluid 6 with a smaller specific gravity than that of the ball lens 15 is larger at least than the diameter of the ball lens 15 and is injected so that an air layer 7 is formed in the space.SELECTED DRAWING: Figure 1 【課題】傾斜角度に対する分解能がより向上し、外乱振動に対して出力の安定性を確保することのできる傾斜角度測定器を提供する。【解決手段】傾斜角度測定器１は、筐体２と、放射光源３と、受光部５と、レンズ４と、受光部５から出力される電気信号に基づいて、筐体２の鉛直方向に対する傾斜角度を算出する算出部とを備え、レンズ４は、凹面１６Ａを放射光源３に対向させた凹面レンズ１６と、凹面１６Ａ上に載置されたボールレンズ１５とからなり、凹面レンズ１６の凹面１６Ａ及び筐体２の内面により囲まれた空間には、ボールレンズ１５よりも比重の小さい粘性流体６が、少なくともボールレンズ１５の直径を超え、空間内に空気層７を形成するように注入される。【選択図】図１