Method for Eliminating Deviation of Thermal Imager Installation Datum Plane

Abstract

The invention relates to a method for eliminating the deviation of a thermal imager installation datum plane, and relates to a thermal imager calibration technology, in particular to a process technology for eliminating the deviation of a thermal imager installation datum plane. The method of the present invention is based on the deviation distance and the upper and lower positions of the imaging point of the small field of view relative to the deviation of the moving reticle line, and a gasket of a corresponding size is placed between the objective lens seat and the main housing to achieve the purpose of assembly and adjustment. The method of the invention can quickly, conveniently and real-time eliminate the deviation of the installation reference plane of the thermal imager, thereby reducing rework and saving production cost.

Description

technical field [0001] The invention relates to a thermal imager calibration technology, in particular to a process technology for eliminating the deviation of a thermal imager installation reference plane. Background technique [0002] The thermal imager installation datum accuracy index is an index to measure the parallelism deviation between the thermal imager’s small field of view optical axis and the thermal imager’s installation bottom surface. The inspection process of the benchmark index is: [0003] S1: Measure the deviation of the installation reference plane on the test bench; [0004] S2: The thermal imager is powered off; [0005] S3: Use a shovel on the fitter's table to shovel the corresponding installation bottom surface of the main housing, first shovel the two installation surfaces at the rear of the thermal imager, and then shovel the 4 installation surfaces to ensure the flatness of the 4 installation surfaces; [0006] S4: Measure the deviation again ...

AI Technical Summary

Problems solved by technology

[0011] 1. It is labor-intensive and time-consuming. Repeated testing and shoveling the installation surface will take up 2 to 3 hours of working time for the test bench, an inspector and a fitter;

[0012] 2. It will destroy the flatness of the four mounting surfaces of the thermal imager

If the accuracy of the installation datum surface is to be qualified, and the flatness of the four installation surfaces is also qualified, an 8-level fitter level is required, and the operation is extremely difficult

[0013] 3. When the deviation of the installation reference plane is large, that is, the deviation ≥ 40 steps, that is, the main shell of 2mrad, because the shoveling amount of the installation surface is already greater than the height of the installation surface H by 1mm, the main shell will be damaged, and the main shell worth tens of thousands of yuan The shell can only be scrapped

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