Light Guide Plate with Frusto-Conical Introduction for Hologram Illumination
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Solution Overview
Problem
Current light guide devices struggle to efficiently distribute and direct light for optimal illumination of hologram recording media, leading to reduced visibility of stereoscopic images due to improper light exit angles and complex optical systems.
Innovation Solution
A light guide device featuring a light guide plate with a frusto-conical introduction portion and plural light exit portions that refract or reflect light to achieve efficient light distribution and exit angles without a complex optical system, using reflective surfaces to direct light in multiple directions within a plane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a complex optical system is used to distribute and direct light, then light distribution efficiency may improve, but device complexity increases
Solution Approach 1:
The light guide plate is segmented into multiple functional regions: a light introduction portion for light entry, a light guidance portion for light transport, and multiple light exit portions for light output. This segmentation allows each region to be optimized for its specific function, achieving efficient light distribution through a relatively simple overall structure without requiring complex optical systems.
2Illumination intensity
If light exit angles are not properly aligned, then visibility of stereoscopic images deteriorates, but achieving proper angles may require complex optical components
Solution Approach 1:
Different regions of the light guide plate are designed with different local qualities and functions. The light introduction portion has specific refractive properties for light entry, the guidance portion maintains total internal reflection, and the light exit portions are positioned and oriented to provide light at specific angles. This local optimization of properties throughout the structure achieves proper light exit angles for stereoscopic image visibility without requiring additional complex optical components.
3Device complexity
If a simple light guide structure is used, then device complexity is reduced, but light distribution efficiency and illumination quality deteriorate
Solution Approach 1:
The light guide plate serves multiple functions within a single integrated structure: it introduces light from a point source, guides the light across the plate through total internal reflection, distributes light to multiple exit portions, and controls exit angles for stereoscopic viewing. This multi-functionality allows a relatively simple structure to achieve efficient light distribution that would otherwise require multiple separate optical components.
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
This configuration enhances the visibility of stereoscopic images by aligning light exit angles effectively, providing a compact and efficient illumination solution for hologram recording media.
Implementation Method 1
guides light introduced into the light guide plate while reflecting the light between the first surface and the second surface
Implementation Method 2
refracts or reflects the guided light so as to cause the light to exit by using the plural light exit portions
Implementation Method 3
refracts or reflects the guided light so as to cause the light to exit by using the plural light exit portions
Implementation Method 4
introduction portion that is provided in the light guide plate and that introduces at least part of light incident upon the introduction portion in plural directions in a plane
Data Source
AI summary
A light guide device includes a light guide plate that includes a first surface and a second surface facing the first surface in one of which plural light exit portions are provided, that guides light introduced into the light guide plate while reflecting the light between the first surface and the second surface, and that refracts or reflects the guided light so as to cause the light to exit by using the plural light exit portions. The light guide device has an introduction portion that is provided in the light guide plate and that introduces at least part of light incident upon the introduction portion in plural directions in a plane where the light is guided by the light guide plate.