Adjustable Reflecting Surface Lens for Backlight Viewing Angle Control
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Solution Overview
Problem
Conventional display devices face challenges in achieving consistent viewing angles across different positions, particularly for large-sized displays, where existing solutions are highly customized and limited in design flexibility.
Innovation Solution
A light source and backlight module design featuring a lens with adjustable reflecting surfaces and light beads, allowing for customizable reflection directions and intensities to optimize viewing angles and light distribution across various regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a polarizer adjustment method is used to achieve different viewing angles, then the viewing angle requirement is met, but the design flexibility and customization space are limited
Solution Approach 1:
The patent applies the dynamics principle by making the reflecting surface adjustable rather than fixed. The reflecting surface can be rotated or repositioned to change the reflection direction, allowing the light source to adapt to different viewing angle requirements dynamically. This resolves the contradiction by providing viewing angle adaptability without requiring complex custom designs for each scenario.
Solution Approach 2:
The patent changes the parameter of reflection direction by adjusting the reflecting surface orientation. By modifying this physical parameter, the system can achieve different viewing angles using the same basic structure, thereby improving adaptability while avoiding the need for complex customized designs for each viewing angle requirement.
2Illumination intensity
If conventional light sources are used in large-sized display devices, then the basic lighting function is provided, but the viewing angles at different positions are inconsistent
Solution Approach 1:
The patent applies local quality by allowing different regions of the display to have different reflection directions. The reflecting surface can be adjusted independently for different light sources positioned at different locations, enabling each region to optimize its light distribution for its specific viewing requirements. This resolves the contradiction by achieving viewing angle consistency across different positions through localized adjustments.
Solution Approach 2:
The patent segments the lighting system into multiple independent light sources, each with its own adjustable reflecting surface. This segmentation allows each light source to be optimized for its specific position and viewing angle requirements, thereby achieving overall viewing angle consistency across the entire large-sized display device.
3Ease of manufacture
If fixed reflection direction lenses are used, then the manufacturing process is simple, but the viewing angle and light intensity cannot be flexibly adjusted
Solution Approach 1:
The patent transforms the fixed lens into a dynamic system by adding an adjustable reflecting surface. The reflecting surface can be rotated or repositioned to change the reflection direction, providing viewing angle adjustability while keeping the basic lens structure simple and easy to manufacture. This resolves the contradiction by adding adjustability without significantly complicating the manufacturing process.
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 enables flexible adjustment of viewing angles and light intensity, effectively addressing the limitations of conventional display devices by providing improved performance in large-sized displays, especially in corner regions where viewing angles and light intensity are critical.
Implementation Method 1
the lens includes a light incident surface, a reflecting surface, and a light emitting surface, a reflection direction of the reflecting surface is adjustable, and light emitted by the light bead is directed to a preset direction through the lens through adjusting the reflection direction of the reflecting surface
Data Source
AI summary
A light source and a backlight module are provided. The light source includes a lens and a light bead arranged in an accommodating cavity of the lens. The lens includes a light incident surface, a reflecting surface, and a light emitting surface. Light emitted by the light bead is directed to a preset direction through the lens through adjusting a reflection direction of the reflecting surface. The reflecting surface includes a first reflecting surface and a second reflecting surface, the first reflecting surface and the second reflecting surface are connected at a turning angle, and the turning angle is greater than 0 degrees and less than 180 degrees. The angle of the turning angle between the first reflecting surface and the second reflecting surface can be adjusted to adjust reflection directions of the first reflecting surface and the second reflecting surface.