#23 - Geometric measurements - Mounting

🧩 Mounting– the key to repeatability in geometric measurement

One of the most critical yet often underestimated components of a geometric optical measurement system is the fixturing, which ensures the precise positioning of the inspected object, the camera, and the illumination.

🔹 Why is it important?
⤷ Measurement repeatability is fundamentally determined by mechanical stability
⤷ The effects of non-uniform illumination can be minimized
⤷ The object is placed in the exact same position in every cycle

🔹 The issue of angular errors
⤷ Rotation that is not perpendicular to the lens axis distorts the image
⤷ This causes direct measurement error → it must be minimized
⤷ Angular error along the direction of the lens axis can be corrected in software,
 but every additional algorithm introduces a new error component into the system

🔹 Summary
⤷ Good fixturing is not optional — it ensures that the measurement produces the same results day after day, cycle after cycle.

Download GeomOptMeasMounting.pdf