Calibration Ledge Aperture Pattern for 3D Printer Laser Alignment

The patent introduces an intermediary calibration device consisting of a calibration plate with aperture openings and a radiation detector. The aperture openings serve as precise reference targets that allow the laser beam to pass through to the detector, enabling accurate measurement of beam position without requiring direct observation of the beam itself. This intermediary system provides much higher measurement precision than previous methods.

The patent replaces mechanical measurement methods (using calibration plates with reference marks visible to the naked eye or simple cameras) with an optical detection system. The radiation detector electronically measures the position of the laser beam by detecting radiation passing through aperture openings, providing higher precision and enabling automated calibration processes.

The calibration plate is segmented into multiple aperture openings arranged in a specific pattern. Each aperture opening represents a discrete calibration point that can be quickly measured. The segmentation allows the system to verify beam position accuracy at multiple locations without requiring complex procedures at each point, thus maintaining high precision while reducing calibration time.

The calibration plate with pre-arranged aperture openings is prepared in advance with known geometric relationships between openings. This preliminary arrangement of calibration points allows the system to perform rapid measurements by simply detecting which apertures the beam passes through, eliminating the need for time-consuming positioning and measurement procedures during the actual calibration process.