Convex-Lens Blind Zone Virtual Display for Sight-Free Road Viewing
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Solution Overview
Problem
Existing vehicle cab blind zones, such as the front blind zone, hinder a driver's ability to accurately observe and perceive road conditions, vehicle width, position, and trajectory, leading to driving safety hazards due to non-intuitive and inconvenient viewing modes that require sight adjustment.
Innovation Solution
A front blind zone perspective virtual display device using convex or concave lenses with image displays to project virtual images into the blind zone, integrated with a container to align the image with the actual scene, and optionally using sun visors and semi-transparent/semi-reflection plates to enhance visibility and reduce reflections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If camera shooting devices are used to collect video images and display them on a screen in the cab, then blind zone visualization is achieved, but the driver needs to transfer sight and adjust sighting distance, reducing intuitiveness and convenience
Solution Approach 1:
The patent introduces a semi-transparent and/or semi-reflection plate as an intermediary element between the camera system and the driver's eye. This plate allows the driver to view the blind zone video images without completely blocking the view of the actual road ahead, eliminating the need to transfer sight between screen and road while maintaining both information sources visible simultaneously
Solution Approach 2:
The patent superimposes the blind zone video images onto the actual road view in a different spatial dimension (overlay layer), creating a multi-layered visual field. This allows the driver to perceive both the real-world road conditions and the blind zone information in the same visual plane, eliminating the need for sight adjustment while providing comprehensive spatial awareness
2Loss of information
If a head-up display device with multiple optical components is used to perceive road conditions, then road condition visibility is improved, but the structure becomes complex and production and maintenance costs increase
Solution Approach 1:
The patent extracts and eliminates unnecessary optical components from the head-up display system. By using a simplified optical path that directly projects blind zone images through a semi-transparent plate rather than multiple reflectors, prisms, and lenses, the device complexity is reduced while maintaining the core function of road condition visibility
Solution Approach 2:
The semi-transparent and/or semi-reflection plate serves multiple functions simultaneously: it displays blind zone video images, allows passage of light from the actual road scene, and provides structural support. This multi-functionality reduces the need for separate components, thereby simplifying the overall device structure while maintaining comprehensive road condition perception
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 allows drivers to intuitively observe blind zone conditions without sight adjustment, improving driving safety by providing timely and convenient access to essential driving information, reducing eye fatigue, and enhancing display quality.
Implementation Method 1
an image display located within a once focal length at a ray output side of the convex lens/concave lens configured to display a to-be-imaged target image, and a virtual image formed by the image display through the convex lens/concave lens is projected into a front blind zone and blended with the to-be-imaged target
Data Source
AI summary
Provided is a front blind zone perspective virtual display device based on a convex lens/concave lens, and a method. The front blind zone perspective virtual display device includes a convex lens/concave lens, at least one image display and a container, wherein the image display is located within a once focal length at a ray output side of the convex lens/concave lens and configured to display a to-be-imaged target image, and the container contains the convex lens/concave lens and the image display and makes room for an imaging optical path of the convex lens/concave lens and the image display. The present disclosure has the following beneficial effects: the perspective virtual image displayed on the perspective virtual display device is integrally blended with a front road condition, so a driver can observe the front road condition and a perspective screen at the same time without needing to transfer a sight and adjust a sighting distance, and the observation is intuitive and comfort; and while various kinds of information required by driving are obtained in a more timely and convenient manner, the eye fatigue of the driver can be also alleviated, and the driving safety is further improved.