Vehicle Mirror Prism Grooves for Blind Spot Luminance
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Solution Overview
Problem
Conventional vehicle mirror systems fail to effectively alert drivers of approaching vehicles in blind spots with sufficient luminance using existing light emitting technologies.
Innovation Solution
A vehicle mirror assembly incorporating a prism member and a light emitting member, where the light beam is refracted and reflected through parallel prism grooves to direct light normal to a light transmissive region, enhancing luminance and visibility for the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional light emitting members are used to alert drivers of approaching vehicles, then the alerting function is provided, but the luminance is insufficient to effectively alert drivers
Solution Approach 1:
The patent introduces a light guide member as an intermediary between the light emitting member and the driver's field of view. This light guide member includes a light guiding portion that receives light from the LED and a light emitting portion that directs the light toward the driver, thereby enhancing the luminance and effectiveness of the alerting function without requiring a more powerful light source
Solution Approach 2:
The patent utilizes the third dimension by positioning the light emitting portion of the light guide member to extend toward the driver in a direction that optimizes light delivery. The light guide member is configured with specific spatial dimensions and orientation to maximize light transmission efficiency and luminance in the direction of the driver, transforming the light distribution from a conventional planar arrangement to a three-dimensional optimized path
2Use of energy by moving object
If the light beam is directed perpendicular to the groove axes through prism grooves, then the light transmission efficiency is improved, but the device structure becomes more complex
Solution Approach 1:
The prism member is segmented into multiple parallel grooves, each acting as an independent light guiding element. This segmentation allows the light beam to be divided into multiple paths that can be independently optimized, improving overall light transmission efficiency while keeping each individual groove structurally simple and manufacturable
Solution Approach 2:
The patent optimizes the geometric parameters of the prism grooves, including the groove angle, width, and depth, to achieve maximum light transmission efficiency. By carefully selecting these parameters, the design achieves high light transmission without requiring overly complex structures, balancing performance and manufacturability
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
The solution provides enhanced luminance and effective alerting of drivers to approaching vehicles in blind spots, ensuring improved safety through enhanced light transmission and diffusion.
Implementation Method 1
as a result of refraction and reflection of the light beam by the prism grooves
Implementation Method 2
as a result of refraction and reflection of the light beam by the prism grooves
Data Source
AI summary
A vehicle mirror assembly includes a mirror casing, a mirror, a prism member, and a light emitting member. The prism member is disposed forwardly of a light emitting region of the mirror, and has a front major surface formed with a plurality of parallel prism grooves. The light emitting member is configured to permit a light beam to emit therefrom along a beam axis in response to the detection of another vehicle's approach, and is disposed to permit the beam axis to be oriented substantially perpendicular to groove axes of the prism grooves.