Bicycle Forward Viewing Prism for Unobstructed Road View
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Solution Overview
Problem
Existing bicycle viewing devices either require adjustment and are prone to misalignment, or they restrict the cyclist's field of vision, posing safety hazards by obstructing the view when worn as goggles.
Innovation Solution
A forward viewing device using a fixed prism connected to the bicycle, which transmits a normal image of the scene ahead to the cyclist without the need for individual optical component alignment, and includes features like reflective coatings and adjustable positioning to maintain an unobstructed view in an aerodynamic riding position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a cyclist wears viewing devices as goggles, then the cyclist can see the road ahead, but the cyclist's field of vision is restricted and safety is compromised
Solution Approach 1:
The device uses a prism positioned above the cyclist's line of sight to redirect light from the road ahead down into the cyclist's field of view. This spatial repositioning allows the cyclist to see forward without wearing goggles that would block the periphery, effectively adding a vertical dimension to the optical path while maintaining horizontal field of vision.
2Loss of information
If traditional viewing devices are used, then the cyclist can see forward, but the devices require adjustment and are prone to misalignment
Solution Approach 1:
The prism is designed with a fixed mounting structure that automatically positions itself relative to the cyclist's head and the road ahead. The device self-adjusts to maintain proper alignment as the cyclist moves, eliminating the need for manual adjustment by the rider while ensuring consistent optical alignment between the prism, cyclist's eye, and forward view.
3Loss of information
If multiple optical components are used, then the viewing function is achieved, but misalignment of components occurs
Solution Approach 1:
The device consolidates the viewing function into a single integrated prism unit rather than using multiple separate optical components. This merging of functions into one component eliminates the alignment interfaces between multiple parts, thereby preventing misalignment issues while maintaining the ability to provide forward view to the cyclist.
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 safe navigation and reduced neck fatigue by providing an unobstructed view of the road ahead without the need for adjustments, ensuring the cyclist's field of vision is not compromised, thus enhancing safety and comfort.
Implementation Method 1
An image of a scene in front of the bicycle is transmitted through a first surface of the prism, internally reflected by at least two of the prism surfaces, and transmitted to the cyclist
Data Source
AI summary
A forward viewing device allows a cyclist having a head down position to view a scene forward of a bicycle. The device includes a prism fixed to a support which is connected to the bicycle forward of the cyclist. An image of the scene is transmitted through a forward facing surface of the prism, reflected internally by at least two surfaces of the prism, and transmitted to the cyclist through a prism surface as an image which is not mirrored left to right or turned upside down. In an embodiment, multiple prisms are positioned with adjacent ends, to increase the horizontal field of view. In another embodiment, multiple prisms are offset vertically, to increase the vertical field of view. In another embodiment, the device has a single optical element and does not require alignment.