Vehicle Pane Optical Compensation via Coordinated Printed Zones

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Solution Overview

Problem

Vehicle panes with integrated sensors often suffer from optical distortions due to variations in bending radii between transparent and printed regions, leading to focal lines that affect sensor accuracy and driver visibility.

Innovation Solution

A vehicle pane design featuring two pane elements with coordinated printed regions, each divided into zones that compensate for optical effects, creating a neutral optical system to eliminate distortions and improve optical properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If thermal bending process is applied to vehicle pane, then pane shaping is achieved, but optical distortions and focal lines occur due to different bending radii in transparent and printed regions

Engineering Contradiction:
Improvepane curvatureVSAvoidoptical uniformity
Core Design Contradiction:
ShapeVSManufacturing precision

Solution Approach 1:

The patent applies different optical properties to different regions of the pane by incorporating printed regions with specific optical characteristics that compensate for thermal bending effects. The printed regions have different refractive indices or optical paths compared to transparent regions, allowing local compensation of distortion while maintaining overall pane shaping.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent changes optical parameters (refractive index, optical path length) in printed regions to compensate for thermal bending. By adjusting these optical parameters, the patent counteracts the different bending radii that occur during thermal processing, thereby reducing focal lines and optical distortions while maintaining the desired pane curvature.

Inventive Principle:
Principle #35Parameter changes

2Illumination intensity

If printed regions are added to vehicle pane, then aesthetic appearance and sensor concealment are improved, but optical distortions and focal lines are introduced

Engineering Contradiction:
Improvevisual appearanceVSAvoidsensor accuracy
Core Design Contradiction:
Illumination intensityVSReliability

Solution Approach 1:

The patent converts the harmful optical effect of printed regions (which cause focal lines and distortions) into a beneficial effect by designing the printed regions with specific optical properties that compensate for the distortions they inherently create. The printed regions serve dual purposes: aesthetic/concealment functions and optical compensation functions.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent modifies optical parameters in printed regions to achieve compensation. By carefully controlling the optical characteristics (refractive index, thickness, pattern) of printed regions, the patent eliminates focal lines and distortions while maintaining the aesthetic and concealing functions of the printed areas.

Inventive Principle:
Principle #35Parameter changes

3Illumination intensity

If black print areas are used to conceal adhesive sites, then aesthetic appearance is improved, but optical distortions occur at boundaries between transparent and printed regions

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidoptical distortion
Core Design Contradiction:
Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The patent applies specific optical compensation characteristics to printed regions adjacent to transparent regions. The printed areas are designed with optical properties that locally compensate for boundary effects, reducing focal lines and distortions at the interfaces between transparent and printed regions while maintaining aesthetic appearance.

Inventive Principle:
Principle #3Local quality

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 design achieves a distortion-free appearance and enhanced sensor accuracy by canceling out optical effects, providing improved viewing conditions for drivers and optical sensors.

Implementation Method 1

The focal lines cause diffraction of light such that an optical distortion occurs.

Methodology Applied
Scientific EffectDiffraction: Diffraction

Implementation Method 2

the second zones are in each case implemented as a transition region between the first zone and the third zone such that at least one optical effect of the first printed region can be compensated, is preferably compensated, by an optical effect of the second printed region

Methodology Applied
Scientific EffectOptical compensation: Interference

Data Source

PatentUS11312110B2Vehicle pane, vehicle, and method for producing same
Publication Date: 2022.04.26 SAINT GOBAIN SEKURIT FRANCE
  • US11312110B2 patent drawing
  • US11312110B2 patent drawing
  • US11312110B2 patent drawing

AI summary

A vehicle pane has a first and a second pane element that are joined to one another surface-to-surface such that the vehicle pane has a first pane face, a second pane face, a third pane face, and a fourth pane face. The second pane face has a first printed region and the third or fourth pane face has a second printed region for forming a viewing region along the vehicle pane. The first and second printed region are each designed with at least a first, second, and third zone. At least one of the first and/or second zones is at least partially printed and the third zones are not printed. The second zones are implemented as a transition region between the first zone and the third zone such that an optical effect of the first printed region is compensated by an optical effect of the second printed region.