Rotating Fan Assembly with Blade-Mounted Light Sources for 3D Image Display

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Solution Overview

Problem

Conventional two-dimensional displays fail to accurately replicate the light field of natural objects, limiting their ability to create compelling, three-dimensional images.

Innovation Solution

A fan assembly with multiple light sources on its blades, driven by a motor to rotate and illuminate the light sources based on mapped image data, creating a three-dimensional representation of an image.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional two-dimensional displays are used, then the display structure is simple and cost-effective, but the ability to accurately replicate the light field of natural objects is limited

Engineering Contradiction:
Improvelight field replication accuracyVSAvoiddisplay structure complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent employs a rotating fan assembly where fan blades with light sources dynamically sweep through space to create a light field. The rotation motion transforms static 2D display limitations into dynamic 3D light field generation, allowing accurate replication of natural object light fields through temporal and spatial modulation of light emission.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention transitions from conventional two-dimensional display planes to three-dimensional light field generation by rotating fan blades through space. The rotation adds temporal and spatial dimensions to light emission, creating a volumetric light field that accurately replicates natural objects rather than flat images.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Measurement precision

If conventional two-dimensional displays are used, then the device complexity is low, but the ability to create three-dimensional images that can be mistaken for natural objects is limited

Engineering Contradiction:
Improveimage realismVSAvoiddisplay system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The rotating fan assembly dynamically generates three-dimensional images by sweeping light sources through space. The motion creates persistence of vision effects and volumetric light fields that mimic natural objects, achieving high image realism through temporal and spatial light modulation rather than static display structures.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system creates accurate light field copies of natural objects by capturing and reproducing the directional, spectral, and temporal characteristics of light from real objects. The rotating fan blades with controlled light sources replicate the complex light field structure of natural objects, producing convincing three-dimensional images.

Inventive Principle:
Principle #26Copying

3Adaptability or versatility

If light sources are placed on rotating fan blades, then three-dimensional images can be generated, but the system complexity increases compared to traditional displays

Engineering Contradiction:
Improveimage display capabilityVSAvoidfan assembly complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The rotating fan assembly serves multiple functions simultaneously: it generates airflow for cooling electronic devices while also functioning as a three-dimensional display medium. The fan blades with integrated light sources create volumetric images, notifications, and visual effects, combining cooling and display functions in a single universal system.

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

Solution Approach 2:

The system uses dynamic rotation of fan blades to achieve versatile image display capabilities. By controlling the rotation speed, light source timing, and blade positioning, the system can generate various three-dimensional images, animations, and visual effects, providing adaptability across different display requirements.

Inventive Principle:
Principle #15Dynamics

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 solution enables the creation of more realistic and engaging three-dimensional images that can be mistaken for natural objects, offering a cost-effective alternative to traditional light field displays.

Implementation Method 1

a motor configured to rotate the multiple fan blades to induce an airflow

Methodology Applied
Scientific EffectPressure gradient: Pressure Gradient

Implementation Method 2

multiple light sources disposed on at least one of the multiple fan blades

Methodology Applied
Scientific EffectLight emission: Light Emitting Diode

Data Source

PatentUS20250157374A1Fan assembly for displaying an image
Publication Date: 2025.05.15 MAGIC LEAP INC
  • US20250157374A1 patent drawing
  • US20250157374A1 patent drawing
  • US20250157374A1 patent drawing

AI summary

Apparatus and methods for displaying an image by a rotating structure are provided. The rotating structure can comprise blades of a fan. The fan can be a cooling fan for an electronics device such as an augmented reality display. In some embodiments, the rotating structure comprises light sources that emit light to generate the image. The light sources can comprise light-field emitters. In other embodiments, the rotating structure is illuminated by an external (e.g., non-rotating) light source.