AR Eyewear Beam Splitter Segmentation for Wide Field of View
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Solution Overview
Problem
Current augmented reality (AR) glasses struggle to display virtual images across the entire natural human field of view while maintaining a form factor similar to ordinary glasses.
Innovation Solution
The eyewear display device incorporates a frame unit with a line-shaped screen unit and multiple partially transparent beam splitter units that operate as scanner units, deflecting light to cover a large field of view and maintaining a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If beam splitter units are designed to cover the entire natural human field of view, then the field of view for virtual images is improved, but the device size and weight increase significantly
Solution Approach 1:
The patent divides the beam splitter into multiple discrete beam splitter units (first, second, third, and fourth beam splitter units) arranged in a specific pattern. This segmentation allows the system to cover a wide field of view while maintaining a compact overall structure that fits ordinary glasses form factors, avoiding the need for a single large beam splitter that would increase weight and size.
2Area of stationary object
If multiple beam splitter units are used to expand the field of view, then the coverage area is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple beam splitter units with a line-shaped screen unit in an integrated optical arrangement. The beam splitter units are positioned to work together with the line-shaped screen, merging their functions to achieve wide field of view coverage while maintaining a unified compact structure that does not significantly increase device complexity.
Solution Approach 2:
The patent uses a line-shaped screen unit that extends in one dimension rather than a conventional two-dimensional display. This dimensional change, combined with the specific arrangement of beam splitter units, enables wide field of view coverage with a more compact optical system that avoids the complexity of traditional multi-element optical designs.
3Shape
If the form factor is maintained to match ordinary glasses, then the usability and aesthetics are improved, but the field of view for virtual images is reduced
Solution Approach 1:
By segmenting the beam splitting function into multiple discrete units arranged in a compact pattern, the system achieves wide virtual image field of view coverage within the constrained form factor of ordinary glasses. The segmented approach allows optimal positioning of each beam splitter unit to maximize field of view while maintaining compact overall dimensions.
Solution Approach 2:
The line-shaped screen unit configured in one dimension, combined with the specific geometric arrangement of beam splitter units, enables the system to project virtual images across a wide field of view while maintaining a compact form factor suitable for ordinary glasses. This dimensional approach optimizes the use of available space within the glasses frame.
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 solution enables a large field of view for virtual images while keeping the AR glasses lightweight and form-factor compliant with everyday glasses, ensuring unobstructed natural vision and improved usability in telecommunications.
Implementation Method 1
partially transparent beam splitter units attached to the frame unit for deflecting in a second direction the light of the screen unit emitted in the first direction
Data Source
AI summary
Disclosed is an eyewear display device for displaying a virtual image in a field of view of a user, comprising a frame unit, a line-shaped screen unit attached to the frame unit for emitting light as computer-generated image information in a first direction; at least two partially transparent beam splitter units attached to the frame unit, designed to be operated as scanner units at a defined scanner frequency, for deflecting the light emitted in the first direction from the screen unit into a second directional range corresponding to the field of view of the user when the eyewear display device is used as intended; to provide an eyewear display device for display, AR glasses, by which the virtual image is displayed in as large a sub-area of the field of view as possible and the form factor of which corresponds as closely as possible to that of ordinary glasses.