Dual-Axis Optical Adjustment for Head-Mounted Displays
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Solution Overview
Problem
Current head-mounted displays (HMDs) lack ergonomic adjustments for users of varying sizes, particularly in terms of interpupillary distance and diopter corrections, leading to discomfort due to insufficient independent adjustment of optical modules in two axes.
Innovation Solution
The design incorporates a dual-axis adjustment system with independent movement and locking mechanisms for each optical arrangement, allowing users to adjust the interpupillary distance and diopter settings using a single knob for each eye, ensuring comfortable fit and vision correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a head mounted display is designed with fixed optical modules, then the device structure is simple, but it cannot accommodate users of various sizes and leads to discomfort
Solution Approach 1:
The optical system is divided into separate adjustable components: the first optical arrangement and second optical arrangement can be independently positioned along the optical axis and laterally. Each optical arrangement has its own movement member (knob) that enables independent adjustment, allowing the system to adapt to different user configurations without requiring complete redesign of the entire optical system.
Solution Approach 2:
The optical arrangements are designed with dynamic adjustment capabilities through movement members that allow users to modify the position of each optical arrangement independently. The locking members provide a mechanism to transition between adjustable and fixed states, enabling the system to adapt to different users while maintaining stability during use.
2Ease of operation
If independent adjustment of optical modules in two axes is implemented, then user comfort is improved, but the device complexity increases
Solution Approach 1:
The adjustment and locking functions are merged into integrated mechanisms. Each movement member (knob) is coupled with a locking member that works together to provide both adjustment and securing functions. This integration reduces the number of separate components and simplifies the user interface while maintaining the dual-axis adjustment capability.
Solution Approach 2:
The movement members serve multiple functions: they enable lateral movement for interpupillary distance adjustment, allow axial movement for diopter adjustment, and work with locking members to secure the optical arrangements in desired positions. This multi-functionality reduces the need for separate controls for each adjustment type.
3Device complexity
If a single knob serves as both movement member and locking member, then the number of components is reduced, but the operational complexity increases
Solution Approach 1:
The movement member (knob) is designed to perform both adjustment and locking functions through its own structure and interaction with the locking member. When the user rotates the knob, it simultaneously adjusts the optical arrangement position and engages or disengages the locking mechanism, eliminating the need for separate locking operations and simplifying the overall interaction.
Data Source
Figure 1A~1C
Figure 1B
Figure 2
AI summary
According to various embodiments, an optical system may be provided. The optical system may include: a first optical arrangement having a first optical axis; a second optical arrangement having a second optical axis at least substantially parallel to the first optical axis; and a first movement member; wherein the first movement member is configured to move the first optical arrangement with respect to the second optical arrangement in a first direction and a second direction; wherein the first direction is a direction at least substantially parallel to the first optical axis; and wherein the second direction is a direction at least substantially perpendicular to the first optical axis.