AR Optical Lens Coupling Structure for Tight Assembly Tolerance
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Solution Overview
Problem
Existing augmented reality devices face challenges in manufacturing convenience and assembly tolerance, optical quality, and integration of gaze recognition and gesture recognition features, which hinder their practical application and user experience.
Innovation Solution
The development of an optical lens and connection member that physically couple with a display, incorporating reflective members and a driving device to enhance manufacturing convenience, minimize assembly tolerances, and improve optical quality, while enabling gaze and gesture recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an optical module for augmented reality is manufactured using conventional methods, then the basic functionality is achieved, but the manufacturing convenience is poor and assembly tolerance is large
Solution Approach 1:
The patent merges the display unit and optical lens into a single integrated optical module. The display unit is disposed on the optical lens in a fixed positional relationship, eliminating the need for separate assembly of these components. This integration directly reduces assembly tolerance while improving manufacturing convenience, as the integrated module can be manufactured as a single unit or pre-assembled with precise positioning features.
Solution Approach 2:
The optical lens serves multiple functions: it acts as both an optical element for transmitting image light and as a mounting substrate for the display unit. The connection member integrated into the optical lens provides both structural support and precise positioning features. This multi-functionality reduces the number of separate components and assembly steps, thereby improving manufacturing convenience while maintaining tight tolerances.
2Ease of manufacture
If the optical module is simplified for easier manufacturing, then manufacturing convenience improves, but optical quality deteriorates
Solution Approach 1:
The patent applies different structural features to different regions of the optical lens. The connection member is integrated into a specific region of the optical lens with precise positioning features (protrusions and recesses) that ensure accurate alignment. The display unit is mounted in a specific region with a fixed positional relationship to the optical center. This localized optimization maintains high optical quality in critical areas while simplifying the overall manufacturing process.
3Manufacturing precision
If multiple components are assembled separately, then manufacturing flexibility is maintained, but assembly tolerance increases
Solution Approach 1:
The patent combines the connection member and optical lens into a single integrated component. The connection member is formed as an integral part of the optical lens, eliminating the need for separate assembly of these two components. This merger directly reduces assembly tolerance by eliminating the interfaces between separate components, while the integrated structure maintains manufacturing flexibility through standardized manufacturing processes for the combined unit.
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 enhances the manufacturing efficiency of augmented reality devices, improves optical quality, and enables advanced features like gaze and gesture recognition, providing enhanced user interaction and convenience services.
Implementation Method 1
an optical lens, in which a plurality of reflection members are embedded and disposed to provide image light as a pupil of a user's eye
Data Source
AI summary
An optical lens module for providing augmented reality content includes an optical lens, in which reflection members provide image light as a pupil of a user's eye, a connection member coupled with the optical lens, and a display providing image light to the reflection members. The display is disposed on a seating structure of the connection member. A first coupling structure extending laterally is formed on one side of the optical lens. Second coupling structures are formed on one side of the connection member in the lateral direction. A gap is formed between the second coupling structures. In a state in which the connection member and the optical lens are coupled based on the concave structure and the protruding structures being coupled to each other, image light output from the display is provided in the direction of the optical lens through the gap between the protruding structures.