Optical Module Light Guide Plate Segmentation for Uniform Pattern Illumination
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Solution Overview
Problem
Existing infinite reflection mirrors used in interior decoration and art installations suffer from limited visual appeal due to monotonous patterns and easy exposure of light-emitting elements, resulting in uneven brightness and aesthetic limitations.
Innovation Solution
An optical module comprising a substrate, light guide plate, light-emitting elements, a reflective layer, pattern layer, and beam splitting layer, with a light-shielding structure and anti-reflective coating to enhance pattern illumination and consistency, and optical microstructures to increase light output angles, reducing the number of light-emitting elements and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If existing infinite reflection mirrors use a light source point between two parallel mirrors to create infinite mirror images, then the infinite extension and visual extension effects are achieved, but the pattern becomes monotonous and the light-emitting elements are easily revealed causing uneven brightness
Solution Approach 1:
The patent segments the light guide plate into multiple regions with different pattern layers, and divides the reflective layer into multiple segments at different positions and angles. This segmentation allows different pattern regions to be illuminated independently, creating diverse patterns while maintaining brightness uniformity through distributed light-emitting elements.
Solution Approach 2:
Different pattern layers are applied to different regions of the light guide plate, with each region having customized optical properties. The reflective layers are also positioned at different locations and orientations to create local variations in light reflection, enabling rich pattern diversity while maintaining overall brightness uniformity.
2Device complexity
If the light source point is exposed in existing infinite reflection mirrors, then the structure is simple, but the appearance becomes less appealing and brightness becomes uneven
Solution Approach 1:
The patent introduces a light guide plate as an intermediary between the light-emitting elements and the reflective layers. This light guide plate diffuses and redistributes the light, hiding the light-emitting elements while creating uniform illumination across the pattern layers, thus maintaining structural simplicity while improving brightness uniformity.
Solution Approach 2:
The light guide plate functions as a thin film structure that uniformly distributes light from the light-emitting elements. This thin film approach maintains the overall structural simplicity while effectively hiding the light sources and creating even brightness distribution across the display area.
3Ease of manufacture
If existing infinite reflection mirrors use general light source points, then the design is simple, but the visual appeal is limited to monotone patterns
Solution Approach 1:
The light guide plate is divided into multiple regions, each with different pattern layers applied to different surfaces. The reflective layers are also segmented and positioned at various locations and angles. This segmentation enables rich pattern diversity while maintaining ease of manufacture through modular fabrication processes.
Solution Approach 2:
The light guide plate serves multiple functions: it guides light from the light-emitting elements, diffuses the light for uniform illumination, supports multiple pattern layers on different surfaces, and positions multiple reflective layers. This multi-functionality achieves pattern richness without significantly complicating the manufacturing process.
Data Source
AI summary
An optical module and an electronic device are provided. The optical module includes a substrate, a first light guide plate, a first light-emitting element, a reflective layer, a first pattern layer, a first light-shielding structure, and a beam splitting layer. The first light guide plate has first and second surfaces opposite to each other. The second surface faces the substrate. The first light-emitting element has a light output surface facing a side portion of the first light guide plate. The reflective layer is arranged between the substrate and the first light guide plate. The first pattern layer is formed on the first light guide plate. The first light-shielding structure covers a part of the substrate, and the first surface of the first light guide plate. The beam splitting layer is disposed above the first light guide plate and the first light-shielding structure.