Vehicle Optical Display Brightness Control for Ambient Object Visibility

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Solution Overview

Problem

Optical systems in vehicles face issues with light leakage and unclear images due to ambient light interference, which can compromise driving safety and user experience.

Innovation Solution

The optical system adjusts the light intensity of light emitting units in the display device based on sensed information, such as ambient light and object detection, to enhance image clarity and prevent obscuration of ambient objects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If the light intensity of light emitting units is increased to improve image visibility, then the image clarity is improved, but light leakage occurs and ambient objects may be obscured

Engineering Contradiction:
Improveimage visibilityVSAvoidlight leakage and obscuration of ambient objects
Core Design Contradiction:
Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The patent divides the display area into multiple regions with different light intensity requirements. The light emitting units are controlled to emit different intensities of light in different regions, allowing critical driving information to be highlighted while reducing light leakage in other areas. This local differentiation resolves the contradiction by applying high illumination only where necessary for image visibility while minimizing harmful light effects in surrounding areas.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system dynamically adjusts the light intensity of light emitting units based on real-time detection of ambient light conditions and object positions. By making the light emission adaptive and changeable rather than static, the system can optimize image visibility when needed while preventing light leakage and obscuration of ambient objects when not required, thus resolving the technical contradiction.

Inventive Principle:
Principle #15Dynamics

2Reliability

If the light intensity is adjusted to prevent obscuration of ambient objects, then driving safety is improved, but image clarity may be reduced in low light conditions

Engineering Contradiction:
Improvedriving safetyVSAvoidimage clarity
Core Design Contradiction:
ReliabilityVSIllumination intensity

Solution Approach 1:

The system changes the light intensity parameter dynamically based on ambient light conditions and detected object positions. When ambient objects are detected in the display area, the light intensity is reduced to prevent obscuration and maintain driving safety. When ambient light is sufficient or no critical objects are present, the light intensity is increased to ensure image clarity. This parameter adaptation resolves the contradiction between safety and clarity.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system uses sensors to detect ambient light conditions and object positions, then feeds this information back to control the light emitting units. This closed-loop feedback mechanism allows the system to automatically adjust light intensity to maintain both driving safety (by preventing obscuration of ambient objects) and image clarity (by providing sufficient illumination when safe to do so).

Inventive Principle:
Principle #23Feedback

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

This adjustment improves driving safety and user experience by reducing light leakage and ensuring that critical driving information is clearly displayed without obscuring ambient objects, even in varying light conditions.

Implementation Method 1

The display device includes a display panel and a plurality of light emitting units. The light emitting units are configured to emit a light to the display panel.

Methodology Applied
Scientific EffectLight Emitting Diode: Light Emitting Diode

Data Source

PatentUS11970116B2Operating method of optical system in vehicle
Publication Date: 2024.04.30 INNOLUX CORP
  • US11970116B2 patent drawing
  • US11970116B2 patent drawing
  • US11970116B2 patent drawing

AI summary

An operating method of an optical system in a vehicle is provided. The optical system includes a display device. The display device includes a display panel and a plurality of light emitting units. The light emitting units are configured to emit a light to the display panel. The operating method includes the following steps. An emphasized portion of an object is determined. An image corresponding to the emphasized portion is displayed by the display device by adjusting a light intensity of at least a portion of the light emitted from the light emitting units.