In-vehicle Camera Ridge Line Design for Reflection Control
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Solution Overview
Problem
In-vehicle cameras face reflection issues due to varying windshield inclination angles, requiring longer hoods that complicate installation in narrow spaces and increase manufacturing costs by needing different camera case designs for different vehicle types.
Innovation Solution
The in-vehicle camera features a case with a top face having a bent angular shape defined by a ridge line, positioning the lens near this ridge line, allowing it to remain close to the windshield regardless of inclination angle, and eliminating the need for a long hood.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a long hood is attached to shield reflected light, then reflection is prevented, but installation in narrow spaces becomes difficult
Solution Approach 1:
The patent changes the dimensional approach by bending the top face of the case at a ridge line, creating a three-dimensional angular structure. This spatial reconfiguration allows the lens to be positioned closer to the windshield while maintaining effective shielding of reflected light, eliminating the need for a long hood projection.
2Object-affected harmful factors
If different camera case designs are created for different windshield inclination angles, then reflection is prevented for each vehicle type, but manufacturing cost increases
Solution Approach 1:
The patent creates a universal camera case design with a bent top face that can adapt to different windshield inclination angles. The angular structure with ridge line allows a single case design to effectively shield reflected light across multiple vehicle types, eliminating the need for vehicle-specific case variations.
Solution Approach 2:
The patent uses parameter changes by adjusting the ridge line position and bending angle of the top face to optimize performance for different windshield angles. This allows a single base design to be adapted through parameter modification rather than requiring completely different case designs for each vehicle type.
3Ease of operation
If the lens is positioned farther from the windshield, then installation is easier, but light reflection enters the lens
Solution Approach 1:
The patent resolves this contradiction by utilizing the third dimension through the bent top face structure. The ridge line creates an angular configuration that allows the lens to be positioned closer to the windshield (improving installation) while the bent geometry blocks reflected light paths from reaching the lens.
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 design effectively prevents light reflection and allows for easier installation in tight spaces, reducing manufacturing costs by eliminating the need for multiple case designs tailored to specific windshield angles.
Implementation Method 1
a phenomenon is caused in which light L coming from the lower side is reflected off the windshield 101 and enters the lens 205 (reflection)
Data Source
AI summary
An in-vehicle camera is provided which has a case and a lens, and which is attached in a vehicle interior so that the lens is exposed at a top face of the case and the top face is opposed to a windshield. The top face has an angular shape bent at a ridge line passing through the top face. The lens is positioned in the vicinity of the ridge line.