US 12,468,022 B2
Laser measurement calibration method
Shih-Tsung Liu, Hsinchu (TW); and Yen-Hsien Lee, Taoyuan (TW)
Assigned to INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW)
Filed by INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW)
Filed on Apr. 23, 2024, as Appl. No. 18/642,881.
Claims priority of application No. 113113219 (TW), filed on Apr. 10, 2024.
Prior Publication US 2025/0321328 A1, Oct. 16, 2025
Int. Cl. G01S 7/497 (2006.01)
CPC G01S 7/497 (2013.01) 6 Claims
OG exemplary drawing
 
1. A laser measurement calibration method, adapted to establish in a software program and executing the following steps after read by a computer:
measuring a standard calibration element with a contact sensing device to obtain a measurement value;
measuring said standard calibration element with at least one non-contact sensing device to obtain at least one surface distance value of said standard calibration element;
calculating a calibration value according to said measurement value of said standard calibration element and said at least one surface distance value of said standard calibration element;
measuring an object to be measured with said at least one non-contact sensing device to obtain at least one surface distance value of said object to be measured; and
calculating a measurement value of said object to be measured according to said calibration value and at least one surface distance value of said object to be measured.