Driver Night Vision Lighting With Pulsed Pupil Control
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Solution Overview
Problem
Existing lighting devices for vehicle drivers fail to maintain a controlled reduction of pupil diameter over time, leading to temporary improvements in night vision that are lost due to visual adaptation, and are not adaptable to individual pupil dynamics influenced by age and ocular pathologies.
Innovation Solution
A device that emits pulsed light with sinusoidal wave emission, diffused to avoid glare and maintain pupil diameter reduction, using user profile adjustment to account for individual factors such as age and ocular health, ensuring continuous pupil diameter control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lighting devices continuously work to reduce pupil diameter, then visual capability is improved, but pupils dilate over time due to visual adaptation
Solution Approach 1:
The lighting device emits light in periodic pulses rather than continuously. The control unit activates the light source at specific intervals, creating a pulsed illumination pattern that maintains pupil constriction while allowing the pupil to partially relax between pulses, preventing complete dilation due to visual adaptation.
Solution Approach 2:
The system dynamically adjusts the illumination pattern based on detected pupil diameter. The control unit monitors pupil size in real-time and modifies the lighting intensity and timing accordingly, creating a dynamic feedback loop that maintains optimal pupil constriction without causing excessive dilation.
2Adaptability or versatility
If lighting devices work occasionally to adapt pupils, then response to abrupt light changes is improved, but visual capability is not maintained over time
Solution Approach 1:
The control unit continuously monitors the driver's pupil diameter and uses this feedback information to adjust the lighting device's operation. This closed-loop control ensures that the lighting device responds appropriately to both gradual and abrupt light changes while maintaining visual capability over extended periods.
Solution Approach 2:
The lighting device performs preliminary pupil constriction before abrupt light changes occur (such as approaching oncoming headlights). By detecting early signs of light changes and activating beforehand, the system prepares the pupil for incoming light, reducing dazzle effects while maintaining overall visual capability.
3Illumination intensity
If pupil diameter is maximized to capture light, then night vision is improved, but optical aberrations increase causing blurred vision
Solution Approach 1:
The system changes the pupil diameter parameter from its natural maximized state to a controlled reduced state during night driving. By maintaining the pupil in a partially constricted state, the system optimizes the balance between light capture and reduction of optical aberrations, improving both illumination intake and vision clarity.
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 device effectively maintains reduced pupil diameter and improves visual capability by adapting to individual pupil dynamics, preventing glare and night myopia, enhancing visual comfort and clarity during night driving.
Implementation Method 1
emit pulsed light with sinusoidal wave emission
Implementation Method 2
diffused to avoid glare
Data Source
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AI summary
Device (10) for improving night vision of vehicle drivers comprising a controlled reduction of the driver's pupil diameter and the maintenance of said reduction over time in order to improve the visual capability of the vehicle driver, all of this, moreover, adapted to the pupil dynamics of the vehicle driver (D). It comprises a vehicle interior part (1) comprising a carrier (1.1), a lighting device (1.2) configured to emit pulsed light with an irradiance at an ocular plane of the vehicle driver following a sinusoidal wave varying in regular periods between 10s and 30s, a control means (1.3), a switching means (1.4) and a user profile adjusting means (2).