AR Glasses Optical-Mechanical Adjustment for Image Misalignment
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Solution Overview
Problem
Augmented Reality (AR) glasses devices experience image misalignment due to external forces, causing the lenses to shift and affecting binocular image fusion, which compromises user experience.
Innovation Solution
The AR glasses device incorporates an adjustment assembly with rotatable waveguide sheets and adjustable pillars to manually correct deviations in the optical-mechanical modules, ensuring that virtual images overlap correctly in the user's eyes, utilizing an arc-shaped groove and screws for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the AR glasses device uses fixed optical-mechanical modules, then the device structure is simple, but the lens position cannot be adjusted after external impacts causing image misalignment
Solution Approach 1:
The patent transforms the fixed optical-mechanical modules into adjustable components. The waveguide sheets are made rotatable relative to the image processing units, and the supporting structures include adjustable mechanisms (such as screws or springs) that allow users to manually adjust the lens positions to correct image misalignment after external impacts, thereby resolving the contradiction between structural simplicity and alignment stability.
Solution Approach 2:
The patent enables parameter adjustment by allowing the waveguide sheets to rotate to different angles and the image processing units to be positioned at different locations. This parameter change capability (adjustable angle and position) allows the system to compensate for lens displacement caused by external impacts, maintaining image alignment without requiring a completely rigid fixed structure.
2Ease of operation
If the AR glasses device incorporates adjustable optical-mechanical modules, then image alignment can be corrected after external impacts, but the device structure becomes more complex
Solution Approach 1:
The patent implements self-service adjustment mechanisms where users can manually adjust the optical-mechanical modules themselves without requiring professional service. The adjustable structures (with user-accessible adjustment mechanisms) allow end-users to correct image misalignment by manually rotating waveguide sheets or adjusting component positions, eliminating the need for complex automated alignment systems or professional service intervention.
3Manufacturing precision
If the AR glasses device uses fixed lens positions, then manufacturing is easier, but binocular image fusion is affected when lenses shift due to external forces
Solution Approach 1:
The patent incorporates preliminary adjustment capabilities during the manufacturing process and before use. The optical-mechanical modules are designed with pre-configured adjustable mechanisms that allow for initial alignment optimization and subsequent manual adjustment if needed. This preliminary preparation of adjustment capabilities ensures that lens position precision can be maintained or restored even after external impacts, as the system is designed to accommodate position variations rather than being rigidly fixed.
Data Source
AI summary
An AR glasses device includes a supporting portion, an optical-mechanical assembly, and an adjustment assembly comprising a first adjustment module and a second adjustment module. The optical-mechanical assembly comprises a first optical-mechanical module and a second optical-mechanical module arranged in a second direction. The first optical-mechanical module comprises a first waveguide sheet and a first fixing portion to drive the first waveguide sheet to rotate about the second direction. The second optical-mechanical module comprises a second fixing portion and a second waveguide sheet. The first adjustment module extends through the supporting portion in a first direction and connects the first fixing portion. An arc-shaped groove about the first direction penetrates the supporting portion in the first direction. The second adjustment module slides in the arc-shaped groove, and the second adjustment module is configured to drive the second waveguide sheet to rotate about the first direction through the second fixing portion.