Image Assembly with Segmented Light Projection for HUD Transparency
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Solution Overview
Problem
Head-up displays (HUDs) in mobile machines face challenges with space constraints in cockpits and the need to balance image projection with windshield transparency, as existing systems require significant space and compromise on transparency due to direct image projection methods.
Innovation Solution
An image assembly using a light-transmissive substrate with defined light projection areas, where one region receives at least twice the light energy of another, allowing for efficient light projection and power savings, and incorporating a light source controller that adjusts beam angles based on user position for precise image delivery without conductive layers or wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a display substrate is installed independently of the windshield for HUD projection, then the image projection function is achieved, but the cockpit space is significantly occupied
Solution Approach 1:
The patent merges the display substrate with the windshield, making the windshield itself serve as the display surface. This integration eliminates the need for a separate display substrate installation, thereby achieving image projection functionality while preserving cockpit space.
Solution Approach 2:
The windshield is given dual functionality: it serves both as the protective transparent barrier and as the display substrate for HUD projection. This multi-functionality eliminates the need for additional dedicated display components, saving space within the cockpit.
2Device complexity
If the image is directly projected onto the windshield as a whole, then the projection is simple, but the windshield transparency is compromised
Solution Approach 1:
The patent divides the windshield surface into multiple projection regions, each corresponding to specific display content areas. By segmenting the projection areas rather than projecting uniformly across the entire windshield, the system maintains localized optical properties that preserve overall windshield transparency while enabling effective image projection in specific zones.
Solution Approach 2:
Different regions of the windshield are assigned different optical characteristics tailored to their specific display functions. This local optimization allows certain areas to have enhanced projection properties while other areas maintain higher transparency, resolving the conflict between projection effectiveness and overall transparency.
3Ease of manufacture
If uniform light energy is projected across all regions, then the manufacturing is simple, but the power consumption is high and precision is reduced
Solution Approach 1:
The patent implements non-uniform light energy distribution across different projection regions, with each region receiving light energy tailored to its specific display requirements. This localized optimization reduces overall power consumption by directing light only where needed and at appropriate intensities, while also improving projection precision for different content types.
Solution Approach 2:
The light energy distribution is made dynamic and adaptive, allowing the system to adjust light intensity and allocation based on real-time display requirements, environmental conditions, and user needs. This dynamic optimization enables precise control over power consumption while maintaining manufacturing feasibility through programmable light control.
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 solution enables precise and energy-efficient light projection on HUDs, maintaining transparency and reducing power consumption while providing an image display surface without conductive layers, enhancing user experience and privacy.
Implementation Method 1
the first region is functioned of either one or both of reflecting and scattering, and the character of reflecting or scattering of the first region is at least two times greater than that of the second region
Implementation Method 2
the first region is functioned of either one or both of reflecting and scattering, and the character of reflecting or scattering of the first region is at least two times greater than that of the second region
Implementation Method 3
a light source controller projecting one or more light beams onto the light projection areas of the light projection surface of the light-transmissive substrate
Data Source
AI summary
An image assembly and an electronic system thereby are provided. The image assembly includes a light-transmissive substrate. The light-transmissive substrate is provided with a light projection surface. The light projection surface defines a plurality of light projection areas, and each of the light projection areas is defined with one or more first regions and a second region. The first region is neighbored by the second region. A light energy projected on the first regions is at least two times greater than a light energy projected on the second region.