Vehicle Ray Blocking Mechanism Using Eye-Hand Extension Line
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Solution Overview
Problem
Conventional sun visors require manual operation by drivers, which can be inconvenient and may not accurately block incident light rays, especially with high-luminance headlamps, leading to temporary blindness or discomfort.
Innovation Solution
An apparatus with an imaging device that calculates a 3D extension line from the driver's eyes to their raised hand, using stored positional coordinates of vehicle glasses, to automatically operate a ray blocking mechanism at the precise point where the line intersects the windshield or side glass, thereby blocking or weakening incident light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional manual sun visor is used, then the driver can block incident light rays, but the driver must take hands off the wheel and manually operate the visor, reducing ease of operation and safety
Solution Approach 1:
The system automatically detects the driver's hand-raising gesture and controls the sun visor positioning without requiring manual operation. The imaging device captures the driver's gesture, the control unit processes the image to calculate the extension line, and the ray blocking mechanism automatically adjusts to block incident rays, making the system serve itself rather than requiring continuous manual intervention
Solution Approach 2:
The manual mechanical operation of raising and lowering the sun visor is replaced by an automated system using imaging devices, control units with image processing capabilities, and electrically controlled ray blocking mechanisms. This substitutes the purely mechanical manual system with an integrated electromechanical automated system
2Object-affected harmful factors
If a conventional sun visor is used, then light blocking is achieved, but the visor reduces the driver's visible area through the windshield and side glass, worsening visibility
Solution Approach 1:
Instead of uniformly blocking light across the entire windshield area with a traditional sun visor, the system selectively blocks only the specific incident rays that are causing glare. By calculating the extension line from the driver's eyes through the raised hand to the precise incident point on the glass, the ray blocking mechanism targets only the necessary localized area, leaving the rest of the visible area through the windshield and side glass unaffected
Solution Approach 2:
The light blocking function is segmented and targeted to specific incident ray paths rather than applying a uniform block across the entire windshield. The system identifies and blocks individual ray paths by calculating extension lines from the driver's perspective, dividing the blocking function into discrete targeted segments rather than a comprehensive uniform block
3Ease of operation
If an automatic sun visor with ray sensing means is used, then manual operation is eliminated, but the visor height is uniformly controlled based on front area ray intensity, reducing measurement precision for different driving conditions
Solution Approach 1:
The system transitions from measuring only the intensity of incident rays (one-dimensional measurement) to capturing the spatial relationship between the driver's eyes, raised hand, and incident rays using 2D imaging. By calculating the extension line in the image plane and mapping it to 3D space, the system adds spatial dimensionality to the measurement, enabling precise identification of incident ray paths regardless of uniform or varied lighting conditions
Solution Approach 2:
The system uses the driver's own hand-raising gesture as feedback to automatically adjust the sun visor positioning. The imaging device detects the gesture, the control unit processes the spatial relationship, and the ray blocking mechanism adjusts accordingly, creating a closed-loop feedback system that adapts to the driver's actual needs in real-time
Data Source
AI summary
Disclosed is an apparatus for blocking incident rays from entering an interior cabin of a vehicle. More specifically, an imaging device provided at a predetermined position in the vehicle and photographing an area around a driver's hands and eyes when a driver raises his or her hand to block rays in the direction of a driver's seat. A control unit which receives photographs from the imaging device, acquires an extension line which extends from the eye area to the hand area. A ray blocking mechanism installed in the vehicle accordingly is then controlled and accordingly operated to block the point where the extension line and the windshield glass or the side glass of the driver's seat meet each other.