Vehicle Display Luminance Adjustment for Driver Vision
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Solution Overview
Problem
Current information display devices for vehicles require complex and costly mechanisms to detect and control image layouts, leading to high stress in information perception for drivers.
Innovation Solution
An information display device with a simple configuration that adjusts luminance based on the age and visual faculties of the driver, using a laser-scan method to project images onto the windshield, with luminance adjustment coefficients calculated to enhance visibility for drivers of all ages, particularly increasing blue and green light luminance for older viewers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If complex detection and control mechanisms are used to adjust image layout based on driver conditions, then information perception comfort is improved, but device complexity and cost increase
Solution Approach 1:
The patent adjusts the luminance parameter of the displayed image based on the driver's age. By changing this single physical parameter rather than implementing complex detection and control mechanisms, the system achieves improved information perception comfort while avoiding increased device complexity. The luminance is automatically adjusted according to age-based visual characteristics.
Solution Approach 2:
The patent uses a simple, cost-effective approach by implementing age-based luminance adjustment through basic processing rather than expensive complex detection systems. This replaces costly mechanical or electronic detection mechanisms with a simpler computational method that achieves the same goal of improving driver comfort.
2Measurement precision
If luminance is increased to improve visibility for older drivers, then visual perception is improved, but image may become too bright causing discomfort
Solution Approach 1:
The patent applies different luminance levels tailored to specific age groups rather than using a uniform brightness level. This localized adjustment ensures that each age group receives optimal luminance for their visual capabilities without excessive brightness causing discomfort. The luminance is precisely adjusted according to the driver's age category.
Solution Approach 2:
The patent implements dynamic luminance adjustment that adapts to the driver's age characteristics. The system automatically modifies luminance levels based on pre-stored age-based parameters, ensuring optimal visibility without excessive brightness. This dynamic adjustment prevents both insufficient visibility and uncomfortable over-brightness.
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 reduces stress in information perception by providing a comfortable and easily visible image for drivers of all ages, ensuring that the image is perceivable without being too bright, thus addressing the complexity and cost issues of existing systems.
Implementation Method 1
using a laser-scan method to project images onto the windshield
Data Source
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AI summary
(Object) To provide an information display device, with a simple configuration, that is capable of reducing stress in perceiving information. (Means of Achieving the Object) The disclosed information display device irradiates a transparent-reflective member with light for forming an image, in order to display a virtual image of the image on the transparent-reflective member. The information display device includes: a plurality of light sources having different peak emission wavelengths, respectively, which are provided for generating the light for forming the image; a vision-related information input unit configured to receive an input of information relating to vision of a viewer viewing the virtual image; and a luminance adjusting unit configured to adjust luminance of each of the plurality of light sources, independently, based on the information input into the vision-related information input unit.