Tunable Lens Mode Switching for Adaptive Headset Vision
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Solution Overview
Problem
Head-mounted devices with fixed lenses often struggle to optimally present content to each user due to the difficulty in adjusting the lenses to accommodate individual user needs.
Innovation Solution
Incorporating a tunable lens module with sensors that adjust the lens power based on user data, allowing the lens to switch between different spherical powers to better accommodate the user's vision requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed lens is used in a head-mounted device, then the device structure is simple and manufacturing is easy, but the lens cannot accommodate individual user needs and optimally present content to each user
Solution Approach 1:
The patent applies a tunable lens that can dynamically change its optical properties (spherical power) in response to sensor data detecting nearby objects. The lens transitions between different modes (first mode with first spherical power and second mode with second spherical power) to adapt to varying viewing conditions, resolving the contradiction between adaptability and complexity by making the lens dynamically adjustable rather than fixed
Solution Approach 2:
The patent changes the optical parameter (spherical power) of the lens based on detected viewing conditions. When a nearby object is detected, the lens switches from a first spherical power to a second spherical power that is greater than the first, allowing the system to adapt to different focal distances while maintaining a relatively simple overall device structure
2Ease of operation
If a tunable lens is used to adjust to user needs, then the lens can optimally present content to each user, but the device complexity increases
Solution Approach 1:
The tunable lens system performs self-adjustment by automatically detecting viewing conditions through sensors and autonomously changing its spherical power without requiring manual user intervention. The system monitors nearby objects and automatically transitions between lens modes, making the adjustment process easy while the added complexity is managed through automated control
Solution Approach 2:
The system uses sensor feedback to detect when a nearby object is being viewed and automatically adjusts the lens spherical power in response. This closed-loop feedback mechanism allows the lens to adapt to user needs automatically, improving ease of operation while the complexity is managed through intelligent control based on sensor data
Data Source
AI summary
An electronic device may include a lens module with a tunable lens. The tunable lens may be operable in multiple modes such as a normal mode, a presbyopia-mitigation mode, a near-focus mode, and a negative power boost mode. During operation, the electronic device may gather data and adjust the tunable lens based on the gathered data. The tunable lens may be switched from the normal mode to the presbyopia-mitigation mode in response to determining that a nearby object is being viewed through the lens module. The tunable lens may be switched from the normal mode to the negative power boost mode in response to ambient light levels being low and/or eye fatigue levels being high. The tunable lens may switch between modes over a transition period. An output device may notify the user when the tunable lens changes modes.