Adjustable Lens Support Structure for Interpupillary Distance
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Solution Overview
Problem
Existing electronic devices, such as head-mounted display devices, lack an effective mechanism to adjust the distance between lenses to accommodate varying inter-pupillary distances of users, which can affect the quality of the visual experience.
Innovation Solution
The electronic device incorporates a structure with a first lens support and a second lens support that are movable relative to each other, coupled with moving members and friction members. A deforming member is disposed between the friction members to press them apart, allowing for precise adjustment of the lens distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed lens structure is used, then the device structure is simple, but the inter-pupillary distance cannot be adjusted for different users
Solution Approach 1:
The patent implements a dynamic lens support structure where the second lens support can move relative to the first lens support along the optical axis. This dynamic mechanism allows the lens distance to be adjusted according to different users' inter-pupillary distances, resolving the contradiction between adaptability and structural simplicity.
Solution Approach 2:
The patent employs a nested structure where the first lens support and second lens support are positioned within the same housing, with the second lens support capable of moving independently. This nesting approach allows for adjustment functionality while maintaining a compact overall device structure.
2Adaptability or versatility
If a movable lens support structure is added to adjust lens distance, then adaptability to different users is improved, but the device complexity increases
Solution Approach 1:
The patent utilizes a self-service adjustment mechanism where friction members automatically engage with the moving members to maintain the lens support at the desired position. The elastic member provides continuous contact force, enabling the system to self-regulate and maintain adjustment without requiring complex locking or actuation mechanisms.
Solution Approach 2:
The patent introduces friction members as intermediary elements between the moving members and the housing. These friction members act as mediators that convert the movement of the lens support into a stable, adjustable position through frictional contact, simplifying the overall adjustment mechanism.
3Stability of the object's composition
If friction members are used to maintain lens position, then adjustment stability is improved, but the mechanism complexity increases
Solution Approach 1:
The patent employs an elastic member that changes its deformation parameter based on the position of the lens support. As the second lens support moves, the elastic member deforms accordingly, automatically adjusting the contact force on the friction members to maintain stable positioning throughout the adjustment range.
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 enables precise adjustment of the lens distance to match individual user's inter-pupillary distance, enhancing the visual experience by improving the alignment and focus of the lenses.
Implementation Method 1
at least one deforming member disposed between the plurality of friction members and configured to press each of the plurality of friction members in a direction away from each other friction member
Data Source
AI summary
An electronic device is provided. The electronic device includes a first lens support, a second lens support movable with respect to the first lens support, a first moving member coupled to the first lens support to move together with the first lens support, a second moving member coupled to the second lens support to move together with the second lens support, a plurality of friction members penetrating the first moving member and the second moving member and movable with respect to each other, and at least one deforming member disposed between the plurality of friction members and configured to press each of the plurality of friction members in a direction away from each other friction member.