LED Indicator Optical Member Protuberance Halo Effect
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing LED indicators lack advanced design features in a simple configuration and fail to effectively address local illumination of the light-emitting region, leading to a desire for a superior design without increasing costs.
Innovation Solution
The use of an optical member with a protuberance on the front side and a smaller indentation on the back side, aligned with the LED light source's optical axis, which modulates light quantity to create a distinctive center illumination effect, allowing for a simple and cost-effective advanced design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a pyramidal lens with curved slope is used to prevent halo effect, then the halo effect is inhibited, but the device complexity increases
Solution Approach 1:
The optical member introduces local quality variations through a protuberance on its front surface, creating a localized light modulation region. This protuberance has a specific height h1 that is smaller than the housing depth h2, allowing local illumination control without requiring complex overall lens structures. The local quality change at the protuberance region effectively prevents the halo effect while maintaining structural simplicity.
2Object-affected harmful factors
If uniform illumination of the opening is used, then the halo effect is prevented, but design features and local illumination control are lost
Solution Approach 1:
The optical member enables local illumination control by incorporating a protuberance with specific dimensional relationships (height h1 less than housing depth h2). This creates a localized bright region at the center of the opening while maintaining darker surroundings, achieving both halo effect prevention and design feature expression through controlled local light distribution.
3Object-affected harmful factors
If a complex lens-shaped structure with curved slope is used, then the halo effect is inhibited, but manufacturing cost increases
Solution Approach 1:
Instead of manufacturing a complex pyramidal lens with curved surfaces, the invention uses a simple optical member with a localized protuberance feature. The protuberance height h1 is specifically designed to be less than the housing depth h2, creating the necessary light modulation effect through a straightforward structural addition that is easier and cheaper to manufacture than complex lens shapes.
4Ease of manufacture
If simple optical member structure is used, then manufacturing cost is reduced, but local illumination control and design features are compromised
Solution Approach 1:
The simple optical member structure achieves local illumination control through the strategic placement of a protuberance with specific dimensional characteristics. The protuberance height h1 being less than the housing depth h2 creates a localized light emission region, enabling design feature expression and controlled illumination patterns without requiring complex overall structural complexity.
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 solution provides an indicator with a superior design by creating a localized bright center and dark surroundings, enhancing visibility and design appeal while maintaining a straightforward structure and controlling costs.
Implementation Method 1
light originating from the LED light source passes through the back-side indentation and the front-side protuberance, exiting from the opening in the front face of the housing
Data Source
AI summary
An indicator has an optical member including a protuberance formed on a front side and an indentation formed on a back side of the optical member in which the indentation is smaller than the protuberance in terms of a projection area and in which the front-side protuberance fits into the opening in a front face of the housing; and an LED light source disposed opposite the back-side indentation of the optical member. A center axis of the front-side protuberance and a center axis of the backs-side indentation are in line with an optical axis of the LED light source. Light originating from the LED light source passes through the back-side indentation and the front-side protuberance, exiting from the opening in the front face of the housing. Thereby, only the center of the rectangular opening looks lighting up brightly, rectangularly.