Laser Scanning Tool Imaging for High-Contrast Inspection
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Solution Overview
Problem
Existing imaging technologies for tools face challenges in achieving high-contrast images of tools with varying sizes, due to limitations in uniform illumination and the need for costly large illumination devices.
Innovation Solution
An imaging device utilizing a laser output unit to output multiple laser beams intersecting the tool's longitudinal direction, combined with a driving mechanism for scanning these beams along the tool's length, and an imaging unit that synchronizes exposure time with the scanning movement to capture high-contrast images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large illumination device is used to uniformly irradiate large tools, then imaging accuracy is improved, but device cost increases
Solution Approach 1:
The patent segments the imaging process into multiple sequential captures. Instead of requiring a single large illumination device to cover the entire tool length, the system divides the tool into multiple imaging sections and captures them sequentially as the illumination device moves along the tool's longitudinal direction. This allows the use of a smaller, more cost-effective illumination device while maintaining imaging accuracy across the entire tool.
Solution Approach 2:
The patent introduces dynamic movement of the illumination device along the longitudinal direction of the tool. The illumination device is positioned and moved by a driving mechanism to illuminate different sections of the tool sequentially. This dynamic approach replaces the need for a large static illumination device with a smaller device that achieves full coverage through controlled movement, reducing cost while maintaining imaging accuracy.
2Productivity
If the illumination device moves during exposure time, then imaging efficiency is improved, but image contrast deteriorates
Solution Approach 1:
The patent employs periodic action by controlling the illumination device to move to specific positions and pause momentarily to capture images of different tool sections. The driving mechanism positions the illumination device at discrete locations along the tool's length, allowing sequential imaging without requiring continuous movement during exposure. This periodic positioning and capturing maintains high contrast images while improving overall imaging efficiency compared to capturing all images from a single fixed position.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables efficient acquisition of high-contrast tool images regardless of tool length, improving imaging efficiency and accuracy while reducing costs associated with large illumination devices.
Implementation Method 1
a laser output unit configured to output a plurality of laser beams to be incident on a tool
Data Source
AI summary
An imaging device includes: a laser output unit configured to output a plurality of laser beams to be incident on a tool in a direction intersecting a longitudinal direction of the tool; a driving mechanism configured to drive the laser output unit to perform scanning with the plurality of laser beams in the longitudinal direction or a short direction of the tool; and an imaging unit configured to image the tool or a projection image of the tool in a state in which an exposure time in a single imaging is set to correspond to a movement time taken by the driving mechanism to move the laser output unit a predetermined distance.