Calibration Cradle for 3D Scanner with Automated Pattern Plate
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Solution Overview
Problem
Conventional intraoral scanners face calibration accuracy issues due to optical member reversal and foreign substances like mist or water scale, and require manual manipulation of pattern plates, making it difficult to ensure calibration accuracy and user convenience.
Innovation Solution
A calibration cradle for three-dimensional scanners that allows the scanner to be inserted with a removed tip case, featuring a movable case and pattern plate that automatically moves to maintain optical axis alignment and adjust distances, improving calibration accuracy and user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If calibration is performed with the tip case including optical member accommodated inside the calibration tool, then the calibration structure is simplified, but the calibration accuracy is degraded due to optical member reversal and foreign substances
Solution Approach 1:
The patent extracts the tip case including the optical member from the calibration tool accommodation portion during calibration. This allows the optical member to be separated from the calibration path, eliminating the reversal phenomenon and foreign substance contamination issues while maintaining a relatively simple calibration structure where the tip case can be easily attached or removed as needed
2Adaptability or versatility
If manual manipulation of pattern plate is required at various distances and angles, then the calibration process provides flexibility, but user convenience is reduced and calibration accuracy is difficult to assure
Solution Approach 1:
The patent implements a movable pattern plate that can automatically change its position and orientation within the calibration tool. This dynamic adjustment capability allows the pattern plate to present various distances and angles to the three-dimensional scanner automatically, maintaining calibration flexibility while eliminating the need for manual manipulation, thereby significantly improving user convenience and ensuring consistent calibration accuracy
3Ease of operation
If automatic movement of pattern plate is implemented, then user convenience is improved and calibration accuracy is enhanced, but device complexity increases
Solution Approach 1:
The patent merges the pattern plate movement mechanism with the existing calibration tool structure. The movable pattern plate is integrated into the calibration tool's accommodation portion, combining multiple functions (pattern display, positional adjustment, angular orientation) into a single unified structure. This approach improves user convenience and calibration accuracy while minimizing the increase in device complexity through functional integration
Data Source
AI summary
The present disclosure relates to a calibration cradle for a three-dimensional scanner. In particular, the calibration cradle includes: a fixed case having an internal space formed therein; a pattern plate provided inside the fixed case and provided to calibrate the three-dimensional scanner comprising a camera; a movable case into which at least a portion of the three-dimensional scanner is inserted such that the camera faces the pattern plate, the movable case being configured to move to allow the three-dimensional scanner to move by at least one of rotational movement or vertical movement; and a movement driver configured to provide a driving force to move at least one of the movable case or the pattern plate. The calibration cradle provides an advantage of improving the reliability of calibration and user convenience.