Optical Correction Structure for Driving Assistance Projection
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Solution Overview
Problem
Existing driving assistance systems experience delays in projecting images due to time-consuming image processing, leading to potential timing mismatches between the projected image and the actual scene.
Innovation Solution
A driving assistance device with an imaging unit, a projection unit, and an adjustment unit that optically corrects image information to project images directly onto a surface without the need for computational image processing, using an optical correction structure such as an inclined or curved image sensor to minimize timing delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If image processing correction is applied to correct warping of the projected image, then image quality is improved, but projection timing delay increases
Solution Approach 1:
The patent replaces the computational image processing system with an optical correction system. Specifically, it uses an optical correction unit comprising refractive elements (lenses) and reflective elements (mirrors) to physically correct warping of the projected image in real-time, eliminating the need for computationally intensive image processing while maintaining image quality and reducing timing delay.
Solution Approach 2:
The patent introduces an optical correction unit as an intermediary component between the image source and the projection surface. This unit includes specific optical elements (refractive and reflective components) that act as mediators to correct image warping optically, thereby avoiding the time-consuming computational process while preserving image quality.
2Manufacturing precision
If optical correction structure is added to correct image warping, then image quality is improved, but device complexity increases
Solution Approach 1:
The patent merges the optical correction functionality directly into the existing imaging unit. The optical correction unit is integrated with the image sensor and projection system, combining multiple functions (imaging, optical correction, and projection) into a unified system, thereby improving image quality without proportionally increasing overall device complexity.
3Manufacturing precision
If image processing is used to adjust image information for projection surface, then warping correction is achieved, but computation time increases
Solution Approach 1:
The patent substitutes the computational image processing approach with a mechanical/optical approach. The optical correction unit uses physical optical elements (lenses and mirrors) to correct warping in real-time through optical path manipulation, eliminating computation time while achieving the same warping correction effect.
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 solution reduces the delay in projection timing and minimizes image warping, allowing for real-time visualization of blind spots without the need for image processing, resulting in a more accurate and timely display of vehicle surroundings.
Implementation Method 1
the optical correction structure includes an optical member that refracts or reflects an image non-symmetrically with respect to an optical axis of the imaging unit
Implementation Method 2
the optical correction structure includes an optical member that refracts or reflects an image non-symmetrically with respect to an optical axis of the imaging unit
Data Source
AI summary
A driving assistance device includes: an imaging unit; a projection unit that projects an image based on image information from the imaging unit toward a projection surface; and an adjustment unit that is configured to form image information that an image sensor of the imaging unit acquires to be adjusted image information that is adjusted for the projection surface, wherein the adjustment unit includes an optical correction structure that causes the image sensor to acquire the adjusted image information by optical correction.