Adjustable Lens Movement Assembly for Head Mounted Displays
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Solution Overview
Problem
Head-mounted displays with lenses that do not align with the user's interpupillary distance can lead to inaccurate or uncomfortable viewing, as the brain may not combine the images correctly to perceive depth, resulting in two separate images instead of a three-dimensional image.
Innovation Solution
A head-mounted display system with a lens movement assembly that allows users to adjust the distance between the lenses to match their interpupillary distance, using an input device to move the lenses relative to each other, ensuring proper alignment for enhanced 3D image perception and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the distance between lenses is fixed, then the device complexity is reduced, but the adaptability to different users' interpupillary distances deteriorates
Solution Approach 1:
The patent implements a movable lens assembly that can dynamically adjust the distance between the first and second lenses relative to the display panels. The lens movement assembly allows the lenses to be repositioned along the optical axis, transforming a static fixed-distance configuration into a dynamic adjustable one, thereby resolving the contradiction between adaptability and device complexity
Solution Approach 2:
The patent enables users to adjust the inter-lens distance parameter to match their specific interpupillary distance. By allowing continuous adjustment of the lens separation distance, the system adapts to different users with varying interpupillary measurements, resolving the adaptability issue while maintaining reasonable device complexity through a dedicated adjustment mechanism
2Ease of operation
If the lens distance does not match interpupillary distance, then the device simplicity is maintained, but the viewing comfort and image quality deteriorate
Solution Approach 1:
The adjustable lens assembly enables dynamic adaptation of the optical system to match individual user anatomy. By allowing the lens distance to be adjusted rather than fixed, the system achieves proper alignment with the user's interpupillary distance, thereby improving viewing comfort and eliminating the perception of separate images while maintaining operational simplicity
Data Source
AI summary
Systems and methods for implementing head mounted displays may include lens movement assemblies. A head mounted display system includes a display housing surrounding one or more display devices, a first lens and a second lens. An input device on the display housing includes a control member moveable between a first position and a second position. A lens movement assembly is operatively coupled to the input device and the first and second lenses and is configured to move the first lens relative to the second lens in response to movement of the control member between the first position and the second position.