Head Mounted Display Light Guide Plate Segmentation
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Solution Overview
Problem
Conventional head-mounted displays are bulky and heavy, affecting wearing convenience and comfort due to their complex structure and size, which hinders the perception of stereoscopic images effectively.
Innovation Solution
A head-mounted display design incorporating a first and second light source, an image output module, and a light guide plate with separated light-output portions, allowing for the guidance of distinct image lights into each eye, reducing the overall size and improving comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional head mounted display uses a complex structure to provide stereoscopic images, then the stereoscopic image perception is achieved, but the size and weight increase, affecting wearing convenience and comfort
Solution Approach 1:
The patent merges the optical paths for left and right eyes into a single light guide plate, combining multiple functions (stereoscopic image delivery, light guidance, and separation) into one integrated component. This reduces the overall number of separate optical components, thereby reducing weight and complexity while maintaining stereoscopic perception capability
Solution Approach 2:
The light guide plate is segmented into a first light guide portion and a second light guide portion, which are spatially separated along the arrangement direction of the light sources. This segmentation allows distinct image lights for left and right eyes to be delivered through separate regions of the same plate, achieving stereoscopic perception without requiring completely separate optical systems
2Reliability
If a conventional head mounted display uses a complex structure to provide stereoscopic images, then the stereoscopic image perception is achieved, but the size increases, affecting wearing convenience and comfort
Solution Approach 1:
The patent merges the optical paths for left and right eyes into a single light guide plate, combining multiple functions (stereoscopic image delivery, light guidance, and separation) into one integrated component. This reduces the overall number of separate optical components, thereby reducing volume and complexity while maintaining stereoscopic perception capability
Solution Approach 2:
The light guide plate is segmented into a first light guide portion and a second light guide portion, which are spatially separated along the arrangement direction of the light sources. This segmentation allows distinct image lights for left and right eyes to be delivered through separate regions of the same plate, achieving stereoscopic perception without requiring completely separate optical systems, thus reducing overall device volume
3Reliability
If a conventional head mounted display uses a complex structure, then stereoscopic image perception is achieved, but the device complexity increases, affecting ease of manufacture and maintenance
Solution Approach 1:
The patent merges the optical paths for left and right eyes into a single light guide plate, combining multiple functions (stereoscopic image delivery, light guidance, and separation) into one integrated component. This reduces the overall number of separate optical components, thereby reducing device complexity and easing manufacturing and maintenance while maintaining stereoscopic perception capability
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 provision of stereoscopic images by separating image light outputs for each eye, while allowing for a compact design that enhances wearing convenience and comfort.
Implementation Method 1
The light guide plate is configured to guide the first image light propagating in the guide plate into the first light-output portion and to guide the second image light propagating in the light guide plate into the second light-output portion
Data Source
AI summary
A head mounted display includes first and second light sources, an image output module and a light guide plate. The first light source is configured to emit a first light. The second light source is configured to emit a second light. The image output module is configured to receive the first light and the second light, and respectively generate first and second image lights with the relative image information. The light guide plate includes first and second light-output portions, and the first light-output portion and the second light-output portion are separated from each other by at least one distance along a first direction. The light guide plate is configured to guide the first image light propagating in the guide plate into the first light-output portion and to guide the second image light propagating in the light guide plate into the second light-output portion.