Light Diffuser Integration Chamber for Uniform Visual Indicator Illumination
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Solution Overview
Problem
Modern electronic devices face challenges in achieving uniform light distribution for visual indicators, often resulting in hot spots and a perception of low quality due to the brightness variations, which is difficult to address with existing solutions like lengthened light guides or expensive optical components.
Innovation Solution
A combination of a light diffuser and light guides is used to provide uniform light illumination, where the light diffuser, with its optical cavity and diffusive areas, diffuses light from a source and directs it through egress openings into the guides, minimizing the length of the guides and avoiding costly components, thus preventing hot spots and ensuring flexible illumination control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light guides are lengthened to even out light distribution, then light uniformity is improved, but device complexity and space requirements worsen
Solution Approach 1:
A light diffuser is introduced as an intermediary component between the light source and the light guide. The diffuser receives light from the source and redistributes it uniformly across the light guide's input face, eliminating the need for extended light guide lengths while achieving uniform illumination along the indicator.
2Illumination intensity
If lens structures or optical amplification components are added to even out light distribution, then light uniformity is improved, but manufacturing cost and device complexity worsen
Solution Approach 1:
The patent employs a light diffuser made from inexpensive materials such as diffusive tape, diffusive film, or materials with diffusive properties, replacing expensive optical components like Fresnel lenses or complex lens structures. This achieves uniform light distribution at low manufacturing cost.
3Device complexity
If conventional light distribution methods are used, then device simplicity is maintained, but light uniformity worsens due to hot spots
Solution Approach 1:
The light diffuser is positioned specifically at the interface between the light source and the light guide, creating a localized region of light redistribution. This targeted approach improves uniformity at the critical interface without requiring complex modifications throughout the entire device structure.
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
This approach enhances light uniformity efficiently and cost-effectively, preventing hot spots and ensuring maximum illumination on visual indicators without sacrificing uniformity, making it suitable for devices with challenging form factors.
Implementation Method 1
a light diffuser having an integration chamber surrounded by one or more light diffusive areas, the one or more light diffusive areas being configured with one or more first openings as one or more ingress areas to receive light from the light source and one or more second openings as one or more egress areas to provide light to the one or more light guides
Data Source
AI summary
An apparatus comprising a light source (110), one or more light guides (104), and a light diffuser (102) having an integration chamber (114) surrounded by one or more light diffusive areas (108). The one or more light diffusive areas are configured with one or more first openings as one or more ingress areas (112) to receive light from the light source and one or more second openings as one or more egress areas (106) to provide light to the one or more light guides. For illuminating visual indicators with uniform light.