Segmented Lamp Lens With Variable Transmissivity Control

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Solution Overview

Problem

Conventional motor vehicle lighting systems lack the ability to independently adjust the light transmissivity of different sections of a lamp assembly in response to environmental conditions or user input, limiting their aesthetic and functional flexibility.

Innovation Solution

A lighting system with a lamp assembly featuring sections made of materials with variable light transmissivity, such as polymer-dispersed liquid-crystal devices (PDLCs), which can be adjusted by applying a voltage, allowing for independent control of transparency and tint of each section, enabling unique aesthetic appearances and adaptive lighting based on environmental conditions or user settings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional fixed-transmissivity lens materials are used, then the lighting system structure is simple, but the aesthetic flexibility and adaptive capability are limited

Engineering Contradiction:
Improveaesthetic flexibilityVSAvoidlens assembly complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The lens assembly is divided into multiple sections (first section, second section, third section) with independently controllable variable transmissivity materials. Each section can be adjusted independently to achieve different aesthetic appearances and lighting configurations, resolving the contradiction between adaptability and complexity by modularizing the control of each segment.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lens assembly incorporates materials with variable light transmissivity that can dynamically change between transparent, partially opaque, and opaque states in response to applied voltage. This dynamic capability allows the same physical structure to provide multiple aesthetic appearances and functional configurations, achieving adaptability without permanently increasing structural complexity.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If variable light transmissivity materials are used in all sections, then aesthetic and adaptive capabilities are enhanced, but the device complexity and manufacturing cost increase

Engineering Contradiction:
Improveadaptive lighting capabilityVSAvoidsystem complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies variable transmissivity materials selectively to specific sections (first section, second section, third section) rather than uniformly across the entire lens assembly. This allows adaptive lighting capability to be implemented where most beneficial while maintaining simpler fixed-transmissivity materials in other areas, thus enhancing adaptability without proportionally increasing overall system complexity.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The lens assembly is designed so that sections with variable transmissivity materials can serve multiple functions: providing aesthetic appearance when opaque, allowing light transmission when transparent, and enabling adaptive responses to environmental conditions. This multi-functionality reduces the need for separate components, thereby enhancing adaptability without proportionally increasing system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If independent control of each section is implemented, then aesthetic flexibility and adaptive capability are maximized, but the control system complexity increases

Engineering Contradiction:
Improveindependent section controlVSAvoidcontrol system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The control system is segmented to independently control each lens section (first section, second section, third section) with variable transmissivity materials. Each section can be adjusted independently based on specific requirements, maximizing aesthetic flexibility and adaptive capability while keeping the control architecture modular and manageable rather than monolithic and overly complex.

Inventive Principle:
Principle #1Segmentation

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 system provides enhanced aesthetic appeal and adaptive lighting capabilities by allowing independent adjustment of light transmissivity, enabling transparency, partial opacity, or opacity of different sections, enhancing the motor vehicle's visibility and appearance under various conditions.

Implementation Method 1

the first and second sections each include a material having variable light transmissivity in response to an applied voltage, and wherein the light transmissivity of the first section is adjustable independent of the light transmissivity of the second section

Methodology Applied
Scientific EffectPolymer-dispersed liquid-crystal device (PDLC) effect: Liquid Crystals

Data Source

PatentUS11927319B1Vehicle lighting system including lamp assembly with one or more sections having variable light transmissivity
Publication Date: 2024.03.12 FORD GLOBAL TECH LLC
  • US11927319B1 patent drawing
  • US11927319B1 patent drawing
  • US11927319B1 patent drawing

AI summary

A lighting system may include a lamp assembly including a lens assembly, wherein the lens assembly includes a first section and a second section, wherein the first and second sections each include a material having variable light transmissivity in response to an applied voltage, and wherein the light transmissivity of the first section is adjustable independent of the light transmissivity of the second section.