Japan, Sept. 18 -- TOKYO DENKI UNIV has got intellectual property rights for 'INCLINATION ANGLE MEASUREMENT UNIT.' Other related details are as follows:
Application Number: JP,2022-135443
Category (FI): G01C9/10,G01C9/06@A
Stage: PROBLEM TO BE SOLVED: 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 (Grant)
Filing Date: Aug. 26, 2022
Publication Date: March 7, 2024
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
