Head-Worn Prism Display Mount for Glasses-Compatible AR Viewing
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Solution Overview
Problem
Existing head-mounted computers with screens, such as Google Glass, are not compatible with users' own glasses, causing vision obstruction and discomfort, especially for long-term wear and frequent movements, making them impractical for applications like warehouse logistics.
Innovation Solution
A system featuring a laterally rigid head covering with a movable temple and transparent prism, allowing the headband to adjust parallel to the headgear, ensuring the prism is positioned correctly within the user's field of vision without obstructing it, and incorporating a flexible material for comfort and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clamping headband is used to attach the head-mounted computer, then the device can be secured to the head, but the user's field of vision is impaired and comfort is poor due to the clamping effect
Solution Approach 1:
The patent extracts the display component from the headband structure and positions it on a separate temple arm that attaches to the user's glasses. This separates the vision-obstructing display from the headband, allowing the headband to be minimal while the display is positioned on the temple where it won't block the field of vision.
Solution Approach 2:
The patent introduces temple arms as intermediary structures that connect the display to the user's glasses. These temple arms serve as mediators between the head-mounted computer and the user's face, positioning the display in a location that doesn't obstruct vision while maintaining secure attachment.
2Stability of the object's composition
If a rigid headband is used to provide stable attachment, then the device remains stable on the head, but comfort is reduced and weight is increased
Solution Approach 1:
The patent applies rigidity locally only where needed - in the temple arms and headband attachment points - while keeping the rest of the structure lightweight and flexible. The temple arms are rigid to maintain stable positioning of the display, but the headband itself can be minimal and lightweight since it only needs to attach to the glasses.
Solution Approach 2:
The patent segments the head-mounted computer into separate components: a lightweight headband for attachment, rigid temple arms for positioning, and a separate display unit. This segmentation allows each component to be optimized independently - the headband for minimal weight and the temple arms for structural stability.
3Loss of information
If the display is positioned within the user's field of vision, then optical information can be transmitted, but the field of vision is obstructed by the opaque display
Solution Approach 1:
The patent uses a transparent or translucent display material instead of an opaque one. This allows the display to transmit optical information to the user's eye while maintaining transparency, so the display itself doesn't obstruct the field of vision. The display can be seen through, eliminating the visual obstruction problem.
4Adaptability or versatility
If the head-mounted computer is designed for frequent movements and long-term wear, then adaptability is improved, but stability and comfort are compromised
Solution Approach 1:
The patent incorporates adjustable and movable components in the temple arms and attachment mechanisms, allowing the device to adapt dynamically to various head positions and movements. The temple arms can be adjusted to different positions and angles, and the attachment to the glasses can accommodate movement, maintaining stability during frequent movements and long-term wear.
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 comfortable, stable, and long-term wear with unobstructed vision, allowing for continuous use in environments requiring frequent movements, such as warehouse logistics, while protecting the user's glasses and reducing weight with lightweight materials.
Implementation Method 1
Images generated by the microdisplay are projected into the user's field of vision via a transparent prism made of acrylic, polycarbonate, or glass
Data Source
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AI summary
The invention relates to a system, comprising: - headgear (22), which comprises, laterally, a stiff region (23); - an arm (1); - a computer, which is attached to the arm (1); - a microdisplay, which is attached to the arm (1); - a transparent prism (2), which is attached to the arm (1), the microdisplay and the transparent prism (2) being disposed such that images generated by means of the microdisplay can be projected by means of the transparent prism (2); - a fastening device (3), which movably fastens or can movably fasten the arm (1) to the stiff region (23) of the headgear (22), the fastening device (3) being such that, when the fastening device (3) is fastened to the stiff region (23), the arm (1) can be moved within a plane running at least substantially parallel to said stiff region (23) of the headgear (22). The invention also relates to a fastening device for the system and to a use of the system.