Variable Pressing Member Illumination Device
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Solution Overview
Problem
Existing illumination devices have limited capabilities in improving color developing characteristics due to the inherent properties of LED light sources, which restrict the enhancement of color gamut and uniformity in display units.
Innovation Solution
An illumination device comprising a light source, an optical component provided separately from the light source, a holding member to secure both, and a variable pressing member that maintains high positional accuracy of the optical component, ensuring optimal alignment and performance even with varying tolerances and thermal expansion differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the optical component and light source are provided separately, then the color developing characteristics are improved, but the positional accuracy and optical integrity become difficult to maintain due to tolerances and thermal expansion differences
Solution Approach 1:
The pressing member is designed to be movable or adjustable, allowing it to dynamically adapt to variations in component dimensions and thermal expansion. This enables the pressing member to maintain optimal contact pressure and positional relationship between the optical component and light source, compensating for manufacturing tolerances and thermal effects while preserving the separate provision of components for improved color characteristics.
2Manufacturing precision
If the optical component is pressed firmly against the holding member, then the positional accuracy is improved, but the thermal expansion differences cause stress and potential damage
Solution Approach 1:
The pressing member is designed to provide variable pressing force that can adapt to different thermal conditions and material expansion rates. By controlling the pressing force parameter within an optimal range, the system maintains high positional accuracy while preventing excessive stress that could damage components or degrade performance during thermal cycling.
3Device complexity
If the LED light source characteristics are used, then the device complexity is reduced, but the color developing characteristics are limited
Solution Approach 1:
An optical component is introduced as an intermediary between the LED light source and the light guide plate. This optical component serves as a mediator that enhances color developing characteristics by modifying the light spectrum or distribution, while the LED light source itself remains simple and unchanged, thus maintaining device simplicity while improving color performance.
Data Source
AI summary
An illumination device includes: a light source; an optical component provided separately from the light source; a holding member holding the light source and the optical component; and a variable pressing member variably pressing the optical component against the holding member.