Optical Code Reader Manual Focus Adjustment
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Solution Overview
Problem
Optical code readers with static focusing objectives are inflexible and costly due to the need for multiple models to accommodate varying reading conditions, while those with adjustable focusing distances, especially autofocus, are complex, costly, and potentially unreliable, especially in applications with limited variability in reading distances.
Innovation Solution
An optical code reader with manual adjustment of focusing distance, facilitated by storage of configuration parameters and a user-friendly interface, allowing easy adjustment and restoration of focusing distance without the need for electric actuators, ensuring versatility, cost-effectiveness, and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a static focusing objective is used, then the reader is simple and reliable, but it requires multiple models for different reading conditions increasing cost and reducing flexibility
Solution Approach 1:
The patent implements a manually adjustable focusing objective that allows dynamic change of focusing distance according to different application conditions. This enables a single reader model to adapt to various reading distances and code sizes, replacing the need for multiple static models while maintaining simplicity and reliability through manual adjustment rather than complex automated systems
2Adaptability or versatility
If an autofocus system is used, then the reader is versatile, but it becomes complex and costly
Solution Approach 1:
The patent extracts the automatic focusing mechanism (electric actuators, sensors, control systems) from the system, retaining only the essential manual adjustment capability. This removes the complex and costly autofocus components while preserving the core functionality of adjusting focusing distance, achieving versatility without the burden of automated systems
Solution Approach 2:
The patent employs a simple, inexpensive manual adjustment mechanism instead of expensive autofocus systems. The manual adjustment component is a cost-effective solution that provides sufficient versatility for applications with limited variability in reading distances, eliminating the need for costly electric actuators and control electronics
3Adaptability or versatility
If an adjustable focusing distance system is used, then the reader is versatile, but it increases cost
Solution Approach 1:
The patent implements a cost-effective manual adjustment mechanism that provides versatility without the high manufacturing costs associated with autofocus systems. The simple mechanical adjustment components are inexpensive to produce and assemble, making the reader economically viable while still allowing adaptation to different reading conditions
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
The solution simplifies the adjustment and restoration of focusing distance, enhancing the optical code reader's versatility and reliability, reducing costs, and allowing easy adaptation to different application conditions without the complexity and cost of autofocus systems.
Implementation Method 1
conveyed onto a photodetector element, which converts the intensity thereof into an electric signal
Data Source
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AI summary
The invention regards an optical code reader comprising a manually operated focusing distance adjustment mechanism, characterised by comprising an electronic memory of a configuration parameter representing the desired focusing distance.