Automated LED Inspection Apparatus for Defective Product Rejection
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Solution Overview
Problem
The existing methods for inspecting light emitting diode (LED) packages are inefficient and rely on manual operation, requiring skilled operators to determine defective LEDs, which limits productivity and accuracy.
Innovation Solution
An automated apparatus that includes an inspection unit using visual inspection and image processing to determine defective LEDs, and a defective product rejection unit to discard them, improving the efficiency and accuracy of the inspection and discarding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual inspection by skilled operators is used, then inspection accuracy can be maintained, but productivity is limited and cannot be improved
Solution Approach 1:
The patent replaces the manual mechanical inspection process with an automated optical inspection system. The apparatus uses an imaging device to capture images of LED packages and automatically analyzes them to detect defective fluorescent silicon charging, eliminating the need for manual visual inspection while maintaining inspection capability.
Solution Approach 2:
The inspection system performs self-inspection by automatically capturing, processing, and analyzing images of LED packages without human intervention. The apparatus independently identifies defective products and triggers rejection mechanisms, enabling the system to inspect and sort products autonomously.
2Productivity
If automated inspection is implemented, then productivity is improved, but the complexity of the inspection system increases
Solution Approach 1:
The inspection system is divided into distinct functional modules: an imaging device for capturing images, an image processing unit for analyzing the captured images, and a rejection mechanism for removing defective products. This segmentation allows each component to perform its specific function independently, simplifying the overall system design and maintenance.
Solution Approach 2:
The patent extracts the inspection function from the manufacturing process and implements it as a separate, dedicated apparatus. The imaging device and image processing capabilities are isolated as independent components that can be optimized and maintained separately from the LED packaging process.
3Reliability
If manual sorting is used, then simple equipment is required, but consistent quality control cannot be ensured
Solution Approach 1:
The patent replaces subjective human judgment with objective image-based detection. The imaging device captures precise visual data of the LED packages, and the image processing unit applies consistent criteria to identify defective fluorescent silicon charging, ensuring uniform quality standards are applied to all products without variation.
Solution Approach 2:
The system creates visual copies (images) of the LED packages for inspection purposes. By capturing and analyzing images rather than directly manipulating physical products during inspection, the system can repeatedly examine the same product features without causing damage or variation, ensuring consistent evaluation criteria.
Data Source
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AI summary
An apparatus for inspecting a light emitting diode (LED) package is provided to inspect an LED to determine whether or not it is defective, and discard the LED when the LED is defective. The apparatus for inspecting an LED package includes: an inspection unit inspecting an LED through a visual inspection to determine whether or not the LED is defective; and a defective product rejection unit discarding the LED when the LED is determined to be defective on the basis of inspection results from the inspection unit among LEDs supplied from the inspection unit. Because the operation of inspecting LEDs and discarding a defective LED are automated and can be rapidly processed as a sequential process, productivity can be improved.