Hooded Bracket for LED Light Guide Alignment
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Solution Overview
Problem
Conventional linear light sources in scanners suffer from non-uniform and variable light intensity due to the lack of secure attachment between the light emitting diode (LED) module and the light guide, leading to inferior image quality.
Innovation Solution
A hooded bracket is used to securely attach the LED module to the light guide, maintaining optimal alignment and proximity, which includes a hood top, hood back, hood sides, and hood grasps to hold the LED module in place, ensuring constant distance and angle, and a light reflecting patterned surface to enhance light uniformity and intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the light bar is not securely connected to the light emitting diode, then the device structure is simpler and easier to manufacture, but the light intensity and uniformity deteriorate due to vibration-induced misalignment
Solution Approach 1:
The device is divided into distinct functional components: the light emitting diode module, the light guide bar, and the hooded bracket. This segmentation allows each component to be manufactured independently with optimized features while maintaining ease of assembly through modular design.
Solution Approach 2:
The hooded bracket serves as an intermediary component that mediates the connection between the light emitting diode module and the light guide bar. It provides secure mechanical attachment while maintaining optimal alignment and proximity, thereby ensuring consistent light intensity and uniformity without requiring complex integrated structures.
2Ease of manufacture
If the light bar is not securely attached to the light emitting diode, then the manufacturing cost is lower, but the light uniformity and intensity deteriorate due to varying proximity
Solution Approach 1:
The hooded bracket incorporates integrated grasping elements that automatically secure the light guide bar to the light emitting diode module during assembly. This self-securing mechanism eliminates the need for additional fasteners or complex attachment procedures, maintaining low manufacturing costs while ensuring reliable and consistent positioning for optimal light uniformity.
3Device complexity
If the light bar is not securely held to the light emitting diode, then the device complexity is reduced, but the light intensity conservation deteriorates due to changed alignment
Solution Approach 1:
The hooded bracket is designed with pre-configured grasping elements and geometric features that establish optimal alignment and proximity between the light emitting diode module and the light guide bar before operation begins. This preliminary positioning ensures maximum light intensity conservation by preventing vibration-induced misalignment during scanner operation.
4Illumination intensity
If a reflective cover is used to improve light uniformity, then the light quality improves, but the production cost and manufacturing complexity increase
Solution Approach 1:
The invention extracts and eliminates the reflective cover component from the traditional light source assembly. Instead of using a separate reflective cover to improve light uniformity, the hooded bracket itself is designed with features that directly secure the light guide bar and maintain optimal alignment, achieving light uniformity without the additional manufacturing steps and costs associated with reflective covers.
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 provides improved light uniformity and intensity without the need for a reflective cover, reducing production costs and manufacturing complexity while maintaining superior light quality.
Implementation Method 1
a light reflecting patterned surface for reflecting light towards the light emitting surface
Data Source
AI summary
A coverless linear light source light guide with hooded bracket for holding a light emitting diode (LED) module to the light guide is disclosed. The hooded bracket is disposed around the light receiving end of the light guide and comprises a hood top, a hood back, two hood sides, and two hood grasps disposed on the hood sides. The hood back comprises the light receiving end of the light guide where light enters the light guide. The hood grasp comprises grasping elements that mate with grasping elements of the LED module to securely hold the LED module to the light guide. The hooded bracket ensures that the distance between the LED module and the light guide and the angle of the LED module and the light guide is constant which maintains optimal alignment and proximity in order to conserve received light intensity and maintain uniformity of emitted light.