Cap-Type VR Display with Semi-Transmissive Mirror
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Solution Overview
Problem
Conventional head-mounted virtual reality display systems cause neck strain due to uneven weight distribution and limited peripheral vision, restricting movement and usability, especially when used for virtual reality training or gaming.
Innovation Solution
A cap-type virtual reality display system with a visor that incorporates a semi-transmissive reflection mirror and positioning devices like GPS and gyroscopes, allowing simultaneous viewing of virtual reality images and external surroundings, using a smart phone or tablet PC, and featuring an insertable-detachable groove for image display devices, which distributes the weight and maintains unobstructed peripheral vision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a head-mounted display is positioned at the front of the eyes to enable virtual reality viewing, then the virtual reality viewing function is improved, but the weight concentrates on the neck bone causing neck injury
Solution Approach 1:
The display system is divided into multiple independent display units positioned at different locations (front, side, rear) of the cap, with each unit having its own support structure. This segmentation distributes the weight and functional load across different parts of the head rather than concentrating it at one location, reducing neck strain while maintaining virtual reality viewing capability
Solution Approach 2:
The display system transitions from a single frontal display to a multi-dimensional arrangement including front, side, and rear displays positioned at different spatial locations on the cap. This three-dimensional configuration allows virtual reality viewing from multiple angles simultaneously, improving the viewing function while distributing weight across the head in different directions to reduce concentrated load on the neck
2Ease of operation
If an eyeglass type display device is used to provide virtual reality viewing, then the viewing function is improved, but the picture size becomes very small due to device weight and narrow interval between eyes and lens
Solution Approach 1:
The viewing system is segmented into multiple independent display units (front display, side display, rear display) positioned at different locations on the cap. Each display unit provides a separate viewing area, effectively increasing the total picture size available to the user while maintaining the compact eyeglass-type form factor of individual units
Solution Approach 2:
The display system expands from a single two-dimensional screen to a multi-dimensional arrangement of multiple displays positioned at front, side, and rear locations. This creates a three-dimensional viewing environment that increases the total visible picture area while keeping each individual display unit compact enough to maintain the lightweight eyeglass structure
3Ease of operation
If a head mount display structure is used to enable virtual reality viewing, then the virtual reality function is improved, but the view information of surroundings is limited causing safety problems
Solution Approach 1:
The viewing system is segmented into multiple display units positioned at different locations (front, side, rear) on the cap, with each unit providing virtual reality viewing in a specific direction. This allows the user to maintain awareness of surroundings by viewing through different display segments at different orientations, reducing information loss about the environment while preserving virtual reality functionality
Solution Approach 2:
The system transitions from a single frontal virtual reality display to a multi-dimensional arrangement of displays positioned at front, side, and rear locations. This three-dimensional configuration enables simultaneous virtual reality viewing in multiple directions, allowing users to perceive both virtual content and surrounding environment from multiple angles, thereby reducing loss of surroundings information while enhancing virtual reality function
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
The system reduces neck strain by evenly distributing the weight, enabling users to view virtual reality and external environments simultaneously while moving freely, enhancing usability and safety during virtual reality training and gaming.
Implementation Method 1
a semi-transmissive reflection mirror which is provided on a lower surface of the image window hole and reflects the image incident from the image display at an oblique angle and transmits external image incident from a front
Implementation Method 2
a semi-transmissive reflection mirror which is provided on a lower surface of the image window hole and reflects the image incident from the image display at an oblique angle and transmits external image incident from a front
Data Source
AI summary
A cap type virtual reality display image system including a cap provided with an image display through which virtual reality, game, 3D game image and smart phone's image can be viewed, where a mounting hole is provided at an upper surface of the cap visor, an image display, an eyepiece lens and a reflection mirror are provided inside the mounting hole. One of the reflection mirror, the semi-transmissive reflection mirror and the spherical semi-transmissive reflection mirror is arranged to rotate on a lower portion of the cap visor, and a positioning device is provided on one surface of the cap such that an observer can view simultaneously 2D and 3D display image and external sights.