Engraved Code Dot Geometry for Optical Detection Accuracy
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Solution Overview
Problem
Existing engraved codes formed by conical dot holes are not easily detectable due to unevenness in depth, leading to incorrect reading.
Innovation Solution
The proposed solution involves creating an engraved code with a plurality of dot dented portions, each having a quadrilateral pyramid shape with inclined planes and a spherical bottom surface, allowing for excellent detectability by preventing diffused reflection and maintaining consistent depth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conical dot holes are used for engraved code, then the code can be formed on the component surface, but the depth unevenness causes incorrect reading and reduces detection accuracy
Solution Approach 1:
The invention changes the geometric parameters of the dot holes from conical shape with variable depth to cylindrical shape with uniform depth. This parameter change ensures that all dots have consistent depth values, eliminating the depth unevenness that causes detection errors while maintaining the engraved code structure
Solution Approach 2:
Instead of using conical dots where the opening is larger than the base (traditional approach), the invention inverts this geometry by using cylindrical dots where the opening equals the base diameter throughout the depth. This inversion of the geometric progression resolves the depth uniformity issue
2Illumination intensity
If conventional engraved codes are used, then the code structure can be formed, but diffused reflection occurs reducing optical detection quality
Solution Approach 1:
The invention changes the surface parameter of the dots from conical angled surfaces to cylindrical vertical surfaces. This parameter change reduces diffused reflection by creating surfaces that reflect light more uniformly, improving optical detection quality
Solution Approach 2:
The invention optimizes the optical properties of the dot surfaces by creating cylindrical geometry that controls light reflection characteristics. This improves the contrast and detectability of the engraved code under optical detection systems
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 configuration enables accurate optical detection of the engraved code as a collection of quadrilateral dots, reducing the likelihood of incorrect detection and maintaining high readout accuracy before and after coating.
Implementation Method 1
a first step of smoothing a surface of a managed article with use of laser light, and a second step of forming the readout code on the smoothed surface of the managed article in a dented manner with use of laser light
Implementation Method 2
forming an engraved code including a plurality of dot dented portions, each having a quadrilateral pyramid shape with inclined planes and a spherical bottom surface
Implementation Method 3
A plane extending to be inclined toward a bottom portion of each of the dots around each of the dots is provided. This configuration enables accurate optical detection of the engraved code as a collection of quadrilateral dots, reducing the likelihood of incorrect detection
Data Source
AI summary
An engraved code includes a plurality of dot dented portions defined on an article. The engraved code includes an opening peripheral edge portion of each of the dot dented portions which has a polygonal or quadrilateral shape. This configuration leads to detection of each dot dented portion as a polygonal or quadrilateral dot.