Multi-Channel Lens Alignment in Head-Mounted Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current head-mounted displays struggle to accurately align the optical center of multi-channel lenses with the user's pupils, leading to suboptimal image presentation and user satisfaction, especially when considering variations in eye position and glasses wear.
Innovation Solution
A head-mounted display system featuring a driving member with multiple units that tilt, move, and adjust the position of multi-channel lenses relative to the user's eyes, utilizing an eye tracking member to gather pupil position information and control the lenses' alignment, angle, and distance, ensuring optimal optical alignment and image presentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed multi-channel lens is used in the HMD, then the device structure is simple, but the optical center cannot be accurately aligned with the user's pupils due to variations in eye position and glasses wear
Solution Approach 1:
The patent implements a dynamic adjustment mechanism where the multi-channel lens can be tilted and moved in multiple directions (up, down, left, right) through a driving member. This transforms the fixed lens structure into a dynamically adjustable one, enabling real-time alignment with the user's pupils while maintaining a relatively compact form factor suitable for wearable devices.
Solution Approach 2:
The driving member is designed to perform multiple functions: tilting the lens, moving it in four directions, and adjusting its position. This multi-functional mechanism consolidates what would otherwise require separate adjustment systems, improving alignment accuracy without proportionally increasing device complexity.
2Reliability
If the multi-channel lens position is fixed, then the device is easier to manufacture, but image quality deteriorates when users wear glasses or have varying eye positions
Solution Approach 1:
The patent implements a dynamic adjustment mechanism where the multi-channel lens can be tilted and moved in multiple directions (up, down, left, right) through a driving member. This transforms the fixed lens structure into a dynamically adjustable one, enabling real-time alignment with the user's pupils while maintaining a relatively compact form factor suitable for wearable devices.
Solution Approach 2:
The system adjusts optical parameters by changing the lens's physical parameters (position, tilt angle) to compensate for variations in user anatomy and accessories. This allows the same HMD to provide consistent image quality across different users regardless of whether they wear glasses or have different eye positions.
3Measurement precision
If multiple driving units are added to adjust lens position and angle, then optical alignment is improved, but the device becomes more complex and larger
Solution Approach 1:
The driving member is designed to perform multiple functions: tilting the lens, moving it in four directions, and adjusting its position. This multi-functional mechanism consolidates what would otherwise require separate adjustment systems, improving alignment accuracy without proportionally increasing device complexity.
Solution Approach 2:
The patent combines multiple adjustment functions (tilt, position, movement in multiple directions) into a single integrated driving member. This merging of functions reduces the overall volume required compared to having separate mechanisms for each adjustment, making the HMD more compact while maintaining precise optical alignment capabilities.
Data Source
AI summary
A head-mounted display is provided, and the head-mounted display includes a pair of frames mounted on the user's body and corresponding to the left and right eyes, a display unit including a pair of display panels respectively mounted to the pair of frames and a pair of multi-channel lenses disposed on a light output path of the pair of display panels and a driving member connected to the pair of frames to allow the frame to tilt and/or move up, down, left, and right, wherein the driving member aligns a center of each of the pair of multi-channel lenses up, down, left, and right with the center of the corresponding eyeball, adjusts an angle of the multi-channel lens, and adjusts a distance between the multi-channel lens and an eye.