Custom Checkerboard Calibration Targets for Semiconductor Wafer Inspection
In semiconductor wafer inspection, your measurement is only as accurate as your calibration target. When you’re detecting particles smaller than 50 µm, verifying die placement to micron tolerances, or measuring kerf width after dicing, a standard ±1 µm printed checkerboard isn’t a calibration tool — it’s a source of error. This guide covers why semiconductor […]
What Is a USAF 1951 Test Target? Structure, Formula, and How to Read It
What a USAF 1951 resolution test target is, how its groups and elements are structured, the lp/mm formula, the positive/negative and substrate variants, and how to read one correctly.
Understanding Calibration Target Accuracy in Simple Terms
What is calibration target accuracy? When we talk about calibration target accuracy, we’re really asking one basic question: “How perfect is this pattern?” Just like when you buy a ruler, you want to make sure the measurements are correct. A calibration target works the same way – it needs to be extremely precise for your […]