Helmet Shield Optical Lens System for Weight Reduction
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Solution Overview
Problem
Existing head-up display systems for helmets are cumbersome due to the need for internal optical components, which increase the helmet's weight and affect its protective efficacy by shifting the center of gravity.
Innovation Solution
A shield with an object lens and an ocular lens serves as a projection screen for a head-up display device, reflecting and projecting images externally without the need for internal electronic components, allowing for adjustable positions and brightness modes based on the rider's angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If optical modules or camera modules are installed inside the helmet to create a head-up display, then the rider can observe traffic conditions, but the helmet becomes heavy and the center of gravity shifts, affecting protective effect
Solution Approach 1:
The patent extracts the optical components from the helmet body and relocates them to an external shield structure. The shield is positioned in front of the rider's face and contains the optical engine module and reflective mirror, separating the display function from the protective helmet structure. This extraction eliminates the weight penalty from the helmet while maintaining the head-up display functionality.
Solution Approach 2:
The shield acts as an intermediary component between the helmet and the rider's eyes. It carries the optical modules and projects images onto the shield surface, which is positioned in the rider's field of view. This intermediary structure allows the display system to be decoupled from the helmet's weight-bearing structure.
2Loss of information
If optical modules are installed inside the helmet to create a head-up display, then the rider can observe real-time traffic conditions, but the helmet structure becomes complex with multiple internal components
Solution Approach 1:
The optical engine module and reflective mirror are extracted from the helmet's internal structure and mounted on the external shield. This simplifies the helmet's internal structure while maintaining the head-up display functionality on the shield surface.
3Ease of operation
If a reflective mirror is positioned under the optical engine module inside the helmet, then the image can be reflected to the rider's eyes, but the helmet's center of gravity shifts affecting protective effect
Solution Approach 1:
The reflective mirror and optical engine module are extracted from the helmet's internal structure and relocated to the external shield. This relocation maintains the image reflection functionality while eliminating the negative impact on the helmet's center of gravity and weight distribution.
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 configuration reduces the weight and maintains the helmet's protective integrity while providing an effective and adjustable head-up display that enhances the rider's visibility and comfort by projecting images externally, with adjustable brightness modes for varying angles and conditions.
Implementation Method 1
The object lens reflects an image displayed on the head-up display device on the mobile vehicle. The image is reflected by the object lens and then projected to the ocular lens
Implementation Method 2
the image is reflected by the ocular lens to rear of the ocular lens
Data Source
AI summary
A shield for a helmet is provided and the shield is served as a projection screen for a head-up display device. The shield includes an object lens, and an ocular lens. The ocular lens is positioned above the object lens. The object lens reflects an image displayed on the head-up display device at a front-bottom of the helmet, the image being reflected by the object lens and then projected to the ocular lens, after that, the image is reflected by the ocular lens to rear of the ocular lens. The aforementioned arrangement reduces electronic components attached to the helmet and further provides an embodiment in regard to the head-up display device and a head-up display system for the helmet.