Optical Measurement System Threshold Core Processing

The patent divides the white light into multiple wavelength components using a spectroscope, and assigns each wavelength component to a specific core in the light guide unit. This segmentation allows each core to transmit a specific wavelength range, improving light efficiency by eliminating the need to filter out unwanted wavelengths during transmission, while still enabling noncontact surface profile measurement.

The patent applies different processing methods to different groups of measured values based on their spatial distribution characteristics. When measured values from multiple cores are averaged, the system first determines whether the surface profile varies finely at each position. If fine variation is detected, the system processes each core's measured values separately rather than indiscriminately averaging them, thereby preserving local surface details while maintaining measurement efficiency.

The patent merges multiple wavelength components into a single white light source, which is then distributed through a light guide unit containing multiple cores. Each core transmits a specific wavelength component, and all cores converge at the optical system. This merging approach increases light efficiency by utilizing all wavelength components simultaneously while managing system complexity through integrated optical path design.

The patent introduces a dynamic threshold differentiation mechanism that adapts to the specific characteristics of the measured surface. The system calculates threshold values based on the distribution of measured values from multiple cores, and dynamically determines which measured values should be averaged together and which should be processed separately. This dynamic approach maintains processing simplicity while enabling accurate measurement of rapid height changes at boundaries by identifying and preserving discontinuities in the surface profile.