Display Apparatus for Distortion-Free Projection on Mixed Light Surfaces
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Solution Overview
Problem
Current image display technologies, such as projection mapping, are limited in their ability to effectively display information on both regions where visible light is transmitted and regions where it is reflected, particularly in automotive environments, where both types of light interaction occur simultaneously.
Innovation Solution
A display apparatus utilizing a laser projector system that distinguishes between regions by projecting visible light on areas where visible light is not transmitted and ultraviolet light on areas where it is transmitted, using cameras to capture external images and a control unit to process and project images onto specific regions within the vehicle cabin, including the windshield and side windows, while accounting for distortion and region distribution information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single projection method is used for the entire viewable area, then the system is simple to operate, but distortion occurs when projecting on surfaces with different light interaction properties
Solution Approach 1:
The control unit performs preliminary identification of region distribution and characteristics before projection. By pre-analyzing the target surface properties and region boundaries, the system can pre-calculate appropriate projection parameters and distortion corrections, ensuring accurate display without requiring complex real-time adjustments.
Solution Approach 2:
The system incorporates feedback mechanisms to detect actual projection results and region characteristics, then adjusts projection parameters accordingly. This feedback loop enables the system to maintain accurate display quality across different region types while keeping the operation simple for the user.
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
Enables suitable and distortion-free information display within the driver's viewing angle, enhancing visibility of critical information in both transmission and reflection regions, thereby improving the driver's situational awareness without obstructing the visual field.
Implementation Method 1
a region in which visible light is transmitted and a region in which visible light is reflected
Implementation Method 2
a region in which visible light is transmitted and a region in which visible light is reflected
Data Source
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AI summary
A display apparatus (1) is a display apparatus that projects an image onto a target projection surface having a first region in which a first wavelength light is reflected and a second region in which the first wavelength light is transmitted and in which visible light is emitted by receiving a second wavelength light that is different from the first wavelength light. The display apparatus (1) includes: a wavelength selection unit (141) that selects the first or the second wavelength light in accordance with a projection region based on region distribution information which is information about a distribution of the first and the second regions on the target projection surface; a light source unit (20) that emits light selected from either the first or the second wavelength light; and a projection unit (30) that projects the image formed by the emitted light onto the target projection surface.