Optical Sensor Distance Error Correction via Image Gradation

The patent applies preliminary action by pre-calculating and storing correction values in a lookup table during the manufacturing process. The distance error correction is performed by simply accessing this pre-prepared table based on measured distance deviations, rather than implementing complex real-time calculation algorithms. This approach maintains manufacturing precision requirements while significantly reducing the complexity of the correction mechanism.

The patent replaces complex mechanical adjustment mechanisms with a software-based correction approach. Instead of using精密 mechanical structures to maintain exact distances, the system uses image processing algorithms and lookup tables to correct for distance variations digitally. This substitution of mechanical precision requirements with computational correction reduces overall device complexity while maintaining measurement accuracy.

The patent implements feedback by measuring the actual distance deviation between light source and detector using image processing techniques. The system calculates the positions of the light source and detector, determines the distance error, and uses this feedback information to retrieve appropriate correction values from a lookup table. This closed-loop feedback mechanism compensates for distance variations, maintaining measurement precision despite structural simplifications.

The patent applies parameter changes by dynamically adjusting the absorbance calculation parameters based on the measured distance deviation. When distance errors are detected, the system modifies the absorbance computation using correction factors stored in the lookup table, which were pre-calculated for various distance scenarios. This allows the measurement system to adapt to different actual distances while maintaining accuracy.