Connectable Lens Assemblies with Elastic Supports for Vision Correction
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Solution Overview
Problem
Existing head-mountable devices struggle to accommodate diverse user vision needs, including vision deficiencies and corrections, without compromising comfort and functionality.
Innovation Solution
The integration of modular, adjustable, and exchangeable lens assemblies within head-mountable devices, facilitated by elastic supports that allow lenses to move relative to other structures, ensuring proper alignment and vision correction for different users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed lenses are integrated into the head-mountable device, then manufacturing precision and reliability are improved, but adaptability to diverse user vision needs deteriorates
Solution Approach 1:
The lens system is segmented into multiple interchangeable lens assemblies, each with different optical properties. Users can swap between lens assemblies to accommodate different vision needs, while each individual lens assembly maintains stable integration with the optical assembly through engagement features.
Solution Approach 2:
The lens assembly incorporates movable lenses within the housing that can be adjusted along the optical axis. This dynamic adjustment capability allows the same lens assembly to adapt to different user requirements while maintaining reliable connection to the optical assembly.
2Measurement precision
If custom lenses are manufactured for each user, then vision correction precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The optical assembly is designed with universal engagement features that can accommodate multiple different lens assemblies. A single optical assembly can work with various lens types (e.g., different prescriptions, polarized, blue light filtering), reducing the need for completely custom-designed optical systems for each user.
Solution Approach 2:
Different lens assemblies provide specialized optical properties tailored to specific user needs (e.g., different refractive powers, coatings, materials), while the overall optical assembly structure remains standardized. This allows precise vision correction through lens selection without increasing the complexity of the fundamental device architecture.
3Adaptability or versatility
If lenses are made movable within the housing, then adaptability to different user needs is improved, but manufacturing precision and alignment difficulty worsen
Solution Approach 1:
The lens assembly housing acts as an intermediary structure that provides precision alignment features between the movable lens and the optical assembly. Engagement features such as rails, guides, or registration marks ensure that when the lens moves within the housing, it maintains accurate optical alignment without requiring complex manufacturing tolerances on the lens itself.
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
Enables tailored vision correction for individual users by allowing easy exchange and adjustment of lenses, enhancing user experience and comfort.
Implementation Method 1
an elastic support connecting the lens to the optical assembly, wherein, when a force exceeding a threshold is applied to the lens, the elastic support is configured to move toward the display
Data Source
AI summary
A head-mountable device can include assemblies that provide vision correction with lenses. By providing head-mountable devices with modular features, certain lens assemblies can provide the desired vision correction for any given user and facilitate exchange with a different lens assembly for a different user. Within given assemblies, a lens or lenses can be moved within the corresponding housing such that they move with respect to other structures, such as other lenses and/or a display. Such movements can be managed by an elastic support that initially provides stability to the lens but can deform to allow the lens to move through the elastic support when sufficient force in a particular direction is applied.