LED Interface Transition Features for Data Collection Illumination
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Solution Overview
Problem
Current data collection devices face inefficiencies in light energy transmission due to significant light refraction at the interface between LED materials and the ambient environment, leading to wasted energy and reduced performance in illumination tasks.
Innovation Solution
Modification of the LED interface with transition features, such as microstructures or patterns, to reduce refractive/reflective losses and enhance light energy output, allowing more light to contribute to aiming and acquisition illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional LED interface is used, then device structure is simple, but light energy transmission efficiency is low due to refraction losses
Solution Approach 1:
The patent introduces transition features (intermediary structures) at the LED interface between the LED material and ambient environment. These transition features act as mediators to reduce refraction losses and improve light energy transmission efficiency, resolving the contradiction between simple structure and energy efficiency.
Solution Approach 2:
The patent modifies the interface parameters by adding transition features with specific geometric characteristics (size, shape, distribution) to change the optical properties at the LED interface. This parameter change reduces refraction losses and improves light energy transmission without fundamentally changing the LED structure.
2Length of moving object
If conventional LED illumination is used, then device complexity is low, but read range is limited due to insufficient light energy throughput
Solution Approach 1:
The transition features serve as intermediary structures that enhance light energy throughput, enabling extended read range without requiring fundamentally new LED designs or additional complex illumination systems.
Solution Approach 2:
The patent addresses read range limitation by optimizing light energy transmission in the optical dimension through interface modifications, rather than increasing physical distance or adding multiple illumination sources.
3Loss of time
If conventional LED illumination is used, then battery consumption is high due to energy losses, but read time is longer due to insufficient illumination efficiency
Solution Approach 1:
The transition features reduce energy losses at the LED interface, improving illumination efficiency. This allows faster reading (reduced read time) while consuming less battery energy, as more of the generated light energy is effectively transmitted.
Solution Approach 2:
By changing the interface parameters with transition features, the patent improves the efficiency of light energy transmission, which directly impacts both read time and battery consumption, allowing optimization of both parameters simultaneously.
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 modified LEDs achieve extended read range, decreased read time, and improved battery life by increasing light energy transmission efficiency, while also enabling selective light emission patterns and spectral filtering.
Implementation Method 1
significant light refraction at the interface between LED materials and the ambient environment
Implementation Method 2
refractive/reflective losses
Data Source
AI summary
A hand held data collection device, such as a bar code scanner, portable data terminal, transaction terminal, or bar code verifier, containing at least one light-emitting diode (LED) that has been modified to improve the efficiency of light energy transmission. The modification involves transition features at the interface between the LED die surface and the ambient environment. Devices using such modified LEDs may offer a number of advantages such as extended read range, decreased read time, and improved battery life.