Electronic Mirror Optical System Parallax Generation
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Solution Overview
Problem
Existing display systems for vehicles, such as electronic rearview mirrors, fail to provide an accurate sense of distance to objects behind the vehicle, as they present a virtual image without sufficient parallax between the left and right eyes, making it difficult for drivers to gauge distances effectively.
Innovation Solution
A display system comprising an image producing unit and an optical system with an image distortion generation factor that creates different image distortions for the left-eye and right-eye images, allowing for parallax between the two, thereby projecting a virtual image that enables the driver to easily perceive distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional electronic mirror system uses a single optical path for both left and right eyes, then the device complexity is reduced, but the measurement precision of distance perception deteriorates due to lack of parallax
Solution Approach 1:
The optical system is segmented into separate optical paths for the left eye and right eye. The light beam from the display screen is divided into a left-eye light beam and a right-eye light beam, which are then reflected by different reflective members (first reflective member for left eye, second reflective member for right eye) to form separate left-eye image and right-eye image. This segmentation enables parallax effect for accurate distance perception while maintaining a relatively simple overall device structure.
2Measurement precision
If the optical system introduces image distortion to create parallax between left and right eyes, then the sense of distance is improved, but the image quality deteriorates due to distortion
Solution Approach 1:
Different reflective members are used for the left-eye and right-eye optical paths, with each reflective member having specifically designed reflective surfaces that introduce different image distortions tailored to each eye's requirements. The first reflective member has a first reflective surface configured to produce a left-eye image with specific distortion characteristics, while the second reflective member has a second reflective surface configured to produce a right-eye image with different distortion characteristics. This local quality differentiation enables accurate distance perception through parallax while managing image distortion on a per-eye basis.
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 system achieves a pseudo-stereoscopic view by producing parallax between the left and right eyes, allowing drivers to gain a clear sense of distance to objects, enhancing safety and usability.
Implementation Method 1
The optical system part forms a left-eye image and a right-eye image on a user's left and right eyes, respectively, and thereby projects the virtual image toward a user's left and right eyes by reflecting and/or refracting the light beam emerging from the display screen
Implementation Method 2
The optical system part forms a left-eye image and a right-eye image on a user's left and right eyes, respectively, and thereby projects the virtual image toward a user's left and right eyes by reflecting and/or refracting the light beam emerging from the display screen
Implementation Method 3
The optical system part has an image distortion generation factor to make an image distortion of the left-eye image different from an image distortion of the right-eye image
Data Source
AI summary
Disclosed herein is a display system including an image producing unit and an optical system part. The image producing unit produces an image on a display screen by letting a light beam, which eventually forms a virtual image based on the image produced, emerge from the display screen. The optical system part forms a left-eye image and a right-eye image on a user's left and right eyes, respectively, and thereby projects the virtual image toward a user's left and right eyes by reflecting and/or refracting the light beam emerging from the display screen. The optical system part has an image distortion generation factor to make an image distortion of the left-eye image different from an image distortion of the right-eye image.