VR Optical Module Focusing Structure With Wide Adjustment Range
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Solution Overview
Problem
Existing VR optical modules have small adjustment ranges and inconvenient focusing, leading to limited view angles and poor visual experience, failing to meet diverse user needs and complicating manufacturing.
Innovation Solution
An optical module design featuring a bracket component with a rotatable focusing element, including a spiral guide protrusion and position-limiting mechanism, allowing for adjustable lens positioning and a large focusing range, combined with a lens tube cover and thermal conductive components for enhanced user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional VR optical module structures are used, then the structure is simple, but the focusing range is small and the visual experience is poor
Solution Approach 1:
The optical module is divided into multiple functional components: a bracket component for structural support, a focusing component with rotatable focusing element for focal length adjustment, a screen component for display, and a lens component for light focusing. This segmentation allows each component to be optimized independently, enabling a large focusing range while maintaining reasonable structural complexity.
Solution Approach 2:
The focusing element is designed to be rotatable rather than fixed, allowing dynamic adjustment of the focal length. The lens tube can move along the optical axis to change the distance between the screen component and lens tube, providing a large focusing range and convenient focusing operation for different user needs.
2Ease of operation
If conventional VR optical modules without focusing function are used, then the manufacturing is easier, but the view angle variation is small and visual experience is poor
Solution Approach 1:
The patent replaces complex mechanical focusing systems with a simplified rotatable focusing element design. The spiral guide protrusion on the focusing element interacts with the guide groove on the lens tube to convert rotational motion into linear motion, achieving convenient focusing operation without requiring complex mechanical mechanisms.
3Ease of operation
If the focusing element is allowed to move freely along the optical axis, then the focusing adjustment is easier, but the focusing element cannot be positioned accurately at the assembly point
Solution Approach 1:
The position-limiting press plate acts as an intermediary component between the focusing element and the bracket component. It provides position limiting at the assembly point to ensure accurate positioning of the focusing element, while still allowing the lens tube to move for focusing adjustment. This mediator resolves the conflict between free movement for easy adjustment and precise positioning for accurate assembly.
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 convenient focusing and a wide focusing range, improving visual experience and user interaction while simplifying manufacturing and reducing costs.
Implementation Method 1
A spiral guide protrusion is formed on an inner wall of the focusing piece, a protrusion matched with the guide groove and a sliding groove formed on the protrusion and matched with the spiral guide protrusion are formed on an outer wall of the lens tube
Data Source
AI summary
The optical module includes a bracket component, a focusing component, a screen component, and a lens component. The bracket component further includes a position-limiting press plate and a screen bracket, and a guide groove. The focusing component further includes a lens tube and a focusing piece installed on the screen bracket by the position-limiting press plate. A spiral guide protrusion is formed on the focusing piece, a protrusion matched with the guide groove and a sliding groove are formed on the lens tube. The spiral guide protrusion is configured to rotate axially along the sliding groove on the lens tube, to enable the lens tube to move in the guide groove of the screen bracket along an optical axis, and the position-limiting press plate is configured to perform position limiting, to prevent the focusing element from moving along the optical axis, thereby achieving convenient focusing and a large focusing range.