LED Mounting Alignment Using Illuminant Center Coordinates
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Solution Overview
Problem
Existing mounting devices for light emitting components face challenges in accurately positioning the illuminant on a board without relying on the outer shape information from the light emitting component image, especially when the visual field is narrow, leading to incomplete imaging and failure in calculating relative coordinates.
Innovation Solution
A mounting device that uses component holding and moving means, imaging means to capture a region with the illuminant, and control means to position a specific part of the illuminant at predetermined coordinates based on detected coordinates, without relying on the outer shape information from the light emitting component image, and includes storage means to derive actual holding coordinates for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the imaging means captures both the illuminant and outer shape reference point in a single image to calculate relative coordinates, then the positioning accuracy of the illuminant is improved, but the device complexity and imaging requirements increase
Solution Approach 1:
The patent extracts only the necessary imaging requirement - capturing the illuminant - while removing the requirement to capture the outer shape reference point. The outer shape information is obtained through separate measurement means rather than through the imaging means, thereby simplifying the imaging requirements while maintaining positioning accuracy.
Solution Approach 2:
The patent segments the measurement process into two independent parts: (1) imaging means captures the illuminant to obtain its position, and (2) separate measurement means obtain the outer shape reference point information. This segmentation allows each means to be optimized independently, reducing overall system complexity.
2Device complexity
If the visual field of imaging means is narrow, then the device complexity is reduced, but the ability to capture both illuminant and outer shape reference point deteriorates
Solution Approach 1:
The patent extracts the outer shape reference point information from the imaging process and obtains it through separate measurement means. This allows the imaging means to have a narrow visual field focused on the illuminant without needing to capture the entire light emitting component, thereby preventing information loss while maintaining device simplicity.
3Measurement precision
If relative coordinates are calculated from the light emitting component image, then the positioning accuracy is improved, but the method becomes inapplicable when imaging is incomplete
Solution Approach 1:
The patent extracts the dependency on complete light emitting component imaging by obtaining outer shape reference point information through separate measurement means rather than from the light emitting component image. This allows the positioning method to remain applicable even when the imaging means cannot capture the entire component, thereby improving method versatility while maintaining positioning accuracy.
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
Enables accurate positioning of the illuminant on the board even when the light emitting component's position deviates from the design value, without requiring pre-stored coordinates or outer shape information, ensuring consistent positional relationships and reducing component complexity.
Implementation Method 1
imaging means for imaging a region which includes at least a portion of the illuminant in the light emitting component to acquire a light emitting component image
Data Source
AI summary
A mounting device includes a control device. The control device images an imaging range which includes an illuminant of a light emitting component and acquires a light emitting component image when mounting the light emitting component which includes the illuminant onto a board. Next, the control device detects coordinates (illuminant detected center coordinates) of a center of the illuminant based on the light emitting component image. The control device performs the mounting of the light emitting component such that the light emitting component is held, the light emitting component moves over the board, and a center of the illuminant is positioned at predetermined coordinates on the board based on the illuminant detected center coordinates, without using information relating to an outer shape of the light emitting component which is based on the light emitting component image.