Light Guide Body for Stereoscopic Display via Angular Light Control
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Solution Overview
Problem
Conventional light guide systems fail to provide sufficient visual effect for displaying objects stereoscopically, as they only allow for planar display due to uniform light emission.
Innovation Solution
A light guide body with reflection patterns that direct light emitted from a light source through a side surface, featuring a first position for light applied to one eye and a second position for light applied to the other eye, with the optical axes intersecting, allowing for stereoscopic display by adjusting the angle and position of reflection patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a reflection pattern is provided on the back surface of a light guide plate to display a letter shape, then the letter can be displayed, but the display is only planar with uniform light emission and insufficient visual effect
Solution Approach 1:
The patent applies local quality by creating non-uniform light emission characteristics at different positions on the exit surface. Specifically, light emitted from the first position has different angular characteristics compared to light emitted from the second position, with each position optimized for viewing by a specific eye. This local differentiation of optical properties enables stereoscopic display while maintaining manufacturing feasibility through controlled reflection patterns.
Solution Approach 2:
The patent transitions from planar display to three-dimensional stereoscopic display by introducing angular dimensionality to light emission. By controlling the emission angles of light from different positions on the exit surface, the invention creates depth perception in the displayed image, transforming a two-dimensional uniform display into a three-dimensional visual experience without complicating the manufacturing process.
2Ease of manufacture
If light is emitted uniformly throughout the area of the letter, then the letter shape can be displayed, but sufficient visual effect cannot be obtained for stereoscopic display
Solution Approach 1:
The patent maintains the simplicity of displaying letter shapes while enhancing visual effect by applying local quality differences to the light emission. Each position on the exit surface (first position for one eye, second position for the other eye) has optimized emission characteristics, creating stereoscopic depth perception. This approach preserves ease of manufacture for creating recognizable shapes while significantly improving the illumination quality and visual impact.
3Device complexity
If reflection patterns are designed for planar display, then manufacturing is simple, but the display lacks depth perception and stereoscopic effect
Solution Approach 1:
The patent resolves the contradiction between simple reflection pattern design and stereoscopic capability by implementing local quality variations in the light emission angles. The reflection patterns remain relatively simple in structure, but the optical characteristics at different positions on the exit surface are differentiated to provide distinct viewing angles for each eye. This enables stereoscopic display without requiring complex multi-layered or asymmetric reflection pattern designs.
Solution Approach 2:
The patent adds the dimension of viewing angle to the traditionally two-dimensional reflection pattern design. By controlling the emission angles of light from different positions on the exit surface, the invention transforms simple planar reflection patterns into stereoscopic display elements, creating depth perception through angular differentiation rather than through complex geometric patterns.
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 the stereoscopic display of objects such as diagrams or pictures by creating a perception of depth through controlled light emission, enhancing visual effect beyond planar displays.
Implementation Method 1
reflection patterns each of which causes light emitted from at least one light source and having entered the light guide body through a side surface of the light guide body to be reflected
Implementation Method 2
light emitted from a light source, which is disposed at a side surface of a light guide plate, into the light guide plate is reflected by a reflection pattern on a back surface side of the light guide plate so as to be emitted from a front surface of the light guide plate
Data Source
AI summary
An exit surface of a light guide plate includes a first position from which first emitted light is emitted within an angular range that causes the first emitted light to be applied to one eye and the vicinity thereof and a second position from which second emitted light is emitted within an angular range that causes the second emitted light to be applied to the other eye and the vicinity thereof. A straight line that passes through the first position and the center of the one eye and a straight line that passes through the second position and the center of the other eye intersect with each other.