Optical Displacement Meter Tilt Correction

The patent transitions from one-dimensional point light measurement to two-dimensional strip-line light measurement. By expanding the light source from a point to a strip-line shape and using a two-dimensional light receiving device, the system captures reflection light images across multiple dimensions, enabling accurate measurement of both displacement and tilt simultaneously, thereby resolving the contradiction between measurement accuracy and device complexity

The patent divides the measurement function into separate processing stages: the profile computing unit calculates light reflection image positions along the third direction at each position in the second direction, and separately computes displacements. This segmentation of computation allows the system to handle complex two-dimensional measurement data efficiently, maintaining measurement accuracy while managing device complexity

The patent replaces the need for precise mechanical positioning of the sensor head with an optical-computational solution. The profile computing unit automatically calculates and corrects for tilt by analyzing the two-dimensional distribution of reflection light images, eliminating the need for manual sensor head positioning adjustments while maintaining high measurement precision

The system performs self-correction for tilt and positioning errors through the profile computing unit, which automatically calculates the light reflection image positions and compensates for angular deviations. This self-service mechanism allows flexible sensor head positioning without sacrificing measurement accuracy, as the system autonomously corrects for positioning variations