Vehicle Lamp Polarizing Film Structure for Hidden 3D Image Display

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Solution Overview

Problem

Current vehicle lamps lack the ability to selectively display various images and three-dimensional shapes while hiding the light source and lens, and are often costly to manufacture.

Innovation Solution

A vehicle lamp design incorporating a light source part with LEDs, a diffuser lens, first and second polarizing films with slits oriented in different directions, and a display object between the polarizing films, allowing for selective image display and hiding of internal components, with a cost-effective manufacturing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a conventional lamp structure is used, then the light source and lens are visible, but the ability to display various images and three-dimensional shapes is lost

Engineering Contradiction:

Improveimage display capabilityVSAvoidlamp structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The lamp is divided into distinct functional layers: light source part, diffuser lens, first polarizing film, display object, second polarizing film, and protective lens. Each layer performs a specific function, allowing the system to display various images while maintaining a relatively simple overall structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The polarizing films act as intermediaries between the light source and the display object. By controlling the polarization state of light, these films enable the display object to show various images and three-dimensional shapes while the light source remains hidden, thus adding versatility without significantly increasing complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the light source and lens are concealed, then image display is improved, but manufacturing complexity increases

Engineering Contradiction:

Improvehiding light source and lensVSAvoidmanufacturing complexity

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The polarizing films serve multiple functions: they hide the light source and lens from view, enable the display object to show various images, and control the polarization state of light. This multi-functionality allows the lamp to conceal its internal components while maintaining ease of manufacture by using a single type of component for multiple purposes.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If advanced display technology is used to show various images, then image display capability is improved, but manufacturing cost increases

Engineering Contradiction:

Improvevarious image displayVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The display object is designed as a simple, replaceable component that can be easily manufactured and installed. Rather than using expensive, complex display technology, the patent employs a straightforward display object that works in conjunction with polarizing films to achieve various image display capabilities, thereby reducing manufacturing costs.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

4Manufacturing precision

If multiple polarizing films with different slit orientations are used, then image display precision is improved, but device complexity increases

Engineering Contradiction:

Improveimage display precisionVSAvoidpolarizing film structure

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

Each polarizing film is designed with slits oriented in a specific direction to perform a particular function. The first polarizing film has slits oriented in one direction to control light polarization, while the second polarizing film has slits oriented in a different direction to further control the polarization state and enable various image display. This localized optimization of each film's properties achieves high image display precision without requiring a complex overall structure.

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

Enables the vehicle lamp to display desired images and three-dimensional shapes while concealing the light source and lens, providing enhanced visibility and cost-effectiveness.

Implementation Method 1

a first polarizing film disposed in front of the diffuser lens in the light traveling direction; a second polarizing film disposed in front of the first polarizing film in the light traveling direction

Methodology Applied

Scientific EffectPolarization: Polarisation

Data Source

PatentUS11988351B1Lamp for vehicle and vehicle including the same

Publication Date: 2024.05.21 SL CORP

AI summary

A lamp for the vehicle includes a light source part including a plurality of light sources, a diffuser lens disposed in front of the light source part in a light traveling direction, a first polarizing film disposed in front of the diffuser lens in the light traveling direction, a second polarizing film disposed in front of the first polarizing film in the light traveling direction, a display object disposed between the first polarizing film and the second polarizing film, and a protective lens disposed in front of the second polarizing film in the light traveling direction. The first polarizing film includes a plurality of first slits that extend in a first direction, and the second polarizing film includes a plurality of second slits that extend in a second direction.