Light Guide Body Mixed-Color Emission Without Diffuser
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Solution Overview
Problem
Existing light guide technologies require a mixed-color member to achieve mixed-color emission from a light emitting region, which is not efficient and may not be suitable for all applications.
Innovation Solution
A light guide body with a reflection region that includes overlapping first and second pattern regions, where first and second reflection patterns reflect different colored lights, allowing the light guide body to emit a mixed color without a mixed-color member by partially overlapping these pattern regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a mixed-color member (diffusion sheet) is used to achieve mixed-color emission, then the light emitting region can emit mixed color light, but the device complexity and number of components increase
Solution Approach 1:
The patent merges the function of color mixing into the light guide body itself by providing multiple light sources (first light source emitting first color light, second light source emitting second color light) that enter the light guide body through different side surfaces. The light guide body integrates the functions of light guiding and color mixing, eliminating the need for separate mixed-color members.
Solution Approach 2:
The light guide body is designed to perform multiple functions: it guides light from multiple light sources, mixes different color lights through its internal structure, and emits the mixed-color light from its light-emitting surface. This multi-functional design replaces the need for dedicated mixed-color members.
2Illumination intensity
If a mixed-color member is used to achieve mixed-color emission, then the desired color effect is obtained, but the manufacturing process becomes more complex
Solution Approach 1:
The patent combines the light guiding function and color mixing function into a single light guide body component. By providing multiple light sources that emit different color lights into the same light guide body, the manufacturing process is simplified as it eliminates the need to manufacture and assemble separate mixed-color members.
3Illumination intensity
If multiple light sources are used to emit different colored lights, then mixed-color emission is achieved, but the device complexity increases
Solution Approach 1:
The patent applies local quality by providing different light sources at different locations (side surfaces) of the light guide body. Each light source emits light of a specific color from its respective side surface, and the light guide body guides these lights to the light-emitting surface, achieving spatial differentiation of light sources while maintaining overall system simplicity.
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
Enables efficient mixed-color emission from a light emitting region without the need for a mixed-color member, enhancing visual effects and application versatility, such as in amusement machines.
Implementation Method 1
a reflection region which reflects, toward the light emitting region, the first light and the second light which have entered the light guide body
Data Source
AI summary
A light guide body configured to guide at least first and second light having different colors that enter the light guide body from at least one light source has a light exit surface having a light emitting region that emits the first light and the second light from the at least one light source, and a reflection region that reflects, toward the light emitting region, the first light and the second light that enters the light guide body. The reflection region has a first pattern region where a plurality of first reflection patterns that reflects the first light are arranged, and a second pattern region where a plurality of second reflection patterns that reflects the second light are arranged. When viewed from a direction perpendicular to the light exit surface, the first pattern region and the second pattern region at least partially overlapping with each other.