External IPD Adjustment Module for Head-Mounted Display Lenses
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Solution Overview
Problem
Current head-mounted display devices lack an efficient mechanism for adjusting the interpupillary distance, leading to suboptimal user experiences due to manual adjustment limitations, which can result in blurred or out-of-focus images.
Innovation Solution
A head-mounted display device equipped with an external adjustment module that includes a driving element and transmission element, allowing for electrical adjustment of the interpupillary distance between lenses, enabling precise alignment and automatic or manual adjustment through a driven mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual adjustment mechanism is used for lens distance, then device structure remains simple, but adjustment precision and user experience consistency deteriorate
Solution Approach 1:
The patent replaces the purely manual mechanical adjustment system with an electrical actuation system. The driving element (motor or actuator) receives electrical signals to automatically adjust the lens distance, eliminating the need for users to manually manipulate complex mechanical components while achieving more precise and repeatable positioning.
Solution Approach 2:
The adjustment mechanism is designed to automatically adjust the lens distance based on input signals without requiring manual intervention. The system can self-regulate the interpupillary distance according to user specifications or detected parameters, making the adjustment process more accurate and consistent across different users.
2Ease of manufacture
If driving element is integrated into the body, then device structure is compact, but maintenance cost and environmental sustainability worsen
Solution Approach 1:
The patent divides the head-mounted display device into two main segments: the body containing optical components and the external adjustment module containing the driving element. This modular segmentation allows the driving element to be replaced independently without affecting the body, significantly reducing maintenance costs and improving sustainability by extending the device's usable life.
Solution Approach 2:
The driving element is extracted from the body and placed in a separate external adjustment module. This extraction enables the driving element to be easily removed and replaced when it fails, avoiding the need to discard the entire device. The module can be detached and replaced with a used or refurbished unit, reducing waste and maintenance costs.
3Adaptability or versatility
If external adjustment module is added, then interpupillary distance adjustment capability is improved, but device complexity increases
Solution Approach 1:
The external adjustment module is designed as a universal interface that can be attached to different head-mounted display devices. The module provides multiple functions including automatic lens distance adjustment, potential eye tracking integration, and user profile storage, making it a versatile solution that enhances various device configurations without requiring device-specific custom designs.
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 users to achieve optimal visual experience by adjusting the interpupillary distance electronically, reducing the need for frequent device replacements and promoting environmental sustainability by allowing replacement of only the external adjustment module when it wears out.
Implementation Method 1
The external adjustment module includes a driving element and a transmission element. The transmission element is assembled to the driving element and used for coupling to the driven mechanism. The driving element is used for driving the driven mechanism through the transmission element to adjust a distance between the first lens and the second lens.
Data Source
AI summary
A head-mounted display device and an external adjustment module are provided. The head-mounted display device includes a body and the external adjustment module. The body has a first lens and a second lens corresponding to both eyes, and also has a driven mechanism. The first lens and the second lens are respectively coupled to the driven mechanism. The external adjustment module includes a driving element and a transmission element. The transmission element is assembled to the driving element and used for coupling to the driven mechanism. The driving element is used for driving the driven mechanism through the transmission element to adjust a distance between the first lens and the second lens.