LED Luminance Specification Tool for Signage Consistency
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Solution Overview
Problem
It is challenging to specify and maintain consistent illumination levels and color temperatures across various LED signage configurations, especially when dealing with multiple dimensions, shapes, and variations in signage programs.
Innovation Solution
A luminance and color specification tool that includes an adjustable light box with a digital touch-panel display for selecting illumination levels and color temperatures, allowing users to calculate luminance in real-time and generate LED specifications that match target values and existing configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If LED layouts and specifications are customized for every signage variation to maintain consistent brightness and color, then illumination quality and color consistency are improved, but the time and complexity required to specify and produce each configuration increases significantly
Solution Approach 1:
The system changes the approach from specifying detailed LED layouts to specifying end result parameters (luminance in cd/m² and color temperature in Kelvin). This parameter transformation allows any LED configuration to be adjusted to meet the same illumination targets, dramatically reducing specification time while maintaining consistency.
Solution Approach 2:
Instead of starting with LED component specifications and calculating the resulting illumination, the system inverts the approach by first defining the desired illumination outcome (luminance and color temperature targets) and then determining the LED configurations needed to achieve those targets. This reversal simplifies the specification process.
2Manufacturing precision
If detailed LED layouts are specified for each signage variation, then illumination consistency is improved, but the complexity of the specification process increases
Solution Approach 1:
The system transforms complex LED layout specifications into simple end result parameters (luminance and color temperature). This parameter change reduces specification complexity from detailed component-level decisions to straightforward target value setting, while the system handles the complex calculations internally.
Solution Approach 2:
The system introduces an intermediary calculation layer that translates between simple end result targets and complex LED configurations. This intermediary process absorbs the complexity, allowing users to work with simple parameters while the system manages the intricate relationships between LED counts, arrangements, and optical properties.
3Measurement precision
If visual references and simulation tools are provided to help users understand luminance and color targets, then specification accuracy is improved, but the system complexity and cost increase
Solution Approach 1:
The system creates visual copies and simulations of the final illuminated signage appearance based on specified targets. By showing users virtual representations of how different luminance and color temperature settings will look, the system enables accurate target specification without requiring complex measurement equipment or extensive user expertise.
Solution Approach 2:
Visual simulation tools serve as intermediaries between abstract numerical targets (luminance values, color temperature) and human perception. These tools translate numerical specifications into visual representations that users can intuitively understand and adjust, improving specification accuracy while keeping the interface simple.
Data Source
AI summary
An LED specification system is provided having at least one LED light output device. The LED light output device has an LED light source, a first exchangeable face panel selectable from a plurality of potential exchangeable face panels, and a housing for locating the exchangeable face panel relative to the LED light source and for orienting the LED light source such that light from the LED light source passes through the first exchangeable face panel. The LED specification system further includes a user interface for selecting at least one preferred output characteristic for light from the LED light output device. The preferred output characteristic is defined by a metric value. The LED specification system further includes a transformation module for defining an LED specification value based at least partially on the defined metric value and a characteristic of the LED light source.