Suspended Imaging Optics With Folded Optical Paths for Greater Display Depth

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Solution Overview

Problem

Adjusting the distance between a display screen and an aerial imaging element in a display system to achieve a larger image suspended display depth increases the volume of the system, reducing user immersion and product competitiveness.

Innovation Solution

A suspended imaging system with a display assembly, reflective element, and driving assembly that rotates the display assembly and reflective element to adjust the virtual image's distance, forming a suspended image with a larger depth without increasing system volume by using reflective and aerial imaging assemblies to symmetrize and adjust the virtual image's position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of stationary object

If the distance between the display screen and the aerial imaging element is increased to achieve a larger image suspended display depth, then the image suspension display depth is improved, but the volume of the entire display system increases

Engineering Contradiction:
Improveimage suspended display depthVSAvoidvolume of display system
Core Design Contradiction:
Length of stationary objectVSVolume of stationary object

Solution Approach 1:

The patent introduces a reflective element that redirects light paths in a new spatial dimension. By placing the reflective element at an angle (e.g., 45 degrees) relative to the display screen, the light path is folded back through the aerial imaging element, creating a virtual image that appears at a greater distance without physically extending the system volume. This dimensional folding of the optical path resolves the contradiction between achieving large display depth and maintaining compact system volume.

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

Solution Approach 2:

The reflective element serves as an intermediary component that mediates between the display screen and the aerial imaging element. It redirects light from the display screen back through the aerial imaging element, enabling the formation of a virtual image at an extended apparent distance. This intermediary allows the system to achieve large image suspension display depth without increasing the physical distance between components, thus maintaining compact system volume.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Length of stationary object

If the distance between the display screen and the aerial imaging element is increased to achieve a larger image suspended display depth, then the image suspension display depth is improved, but the user sense of immersion is reduced

Engineering Contradiction:
Improveimage suspended display depthVSAvoiduser sense of immersion
Core Design Contradiction:
Length of stationary objectVSEase of operation

Solution Approach 1:

By folding the optical path through the reflective element, the system creates a virtual image that appears to be suspended at a greater depth without physically expanding the system. This maintains a compact form factor that preserves user immersion, while the virtual image depth is enhanced through the optical path folding mechanism.

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

Solution Approach 2:

The reflective element creates a virtual copy of the display screen image that appears to be suspended in space. This virtual copy maintains the visual quality and immersion of the original display while appearing at an extended depth, allowing users to experience both immersion and depth without the physical expansion that would compromise immersion.

Inventive Principle:
Principle #26Copying

3Length of stationary object

If the distance between the display screen and the aerial imaging element is increased to achieve a larger image suspended display depth, then the image suspension display depth is improved, but the product competitiveness is reduced

Engineering Contradiction:
Improveimage suspended display depthVSAvoidproduct competitiveness
Core Design Contradiction:
Length of stationary objectVSAdaptability or versatility

Solution Approach 1:

The patent achieves enhanced image suspension display depth by folding the optical path in a new spatial dimension using the reflective element. This allows the system to achieve superior display depth performance without increasing physical size, making the product more competitive while maintaining adaptability to various application scenarios.

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

Solution Approach 2:

The system changes the optical path parameters by introducing the reflective element at specific angles, which transforms the light propagation characteristics. This parameter change enables the achievement of larger image suspension display depth within the same physical volume, enhancing product competitiveness without compromising adaptability.

Inventive Principle:
Principle #35Parameter changes

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

Achieves a larger display depth with reduced system volume by rotating the display and reflective elements, enhancing user immersion and product competitiveness without physical expansion.

Implementation Method 1

a reflective element located on a side of the display assembly and inclined toward a direction close to the display assembly, wherein the display assembly forms a virtual image of the display assembly on other side of the reflective element

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 2

the virtual image of the display assembly passes through the aerial imaging assembly and forms the suspended image on other side of the aerial imaging assembly

Methodology Applied
Scientific EffectRefraction: Refraction

Data Source

PatentEP4614213A1Suspended imaging system
Publication Date: 2025.09.10 WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
  • EP4614213A1 patent drawingFigure 1
  • EP4614213A1 patent drawingFigure 2
  • EP4614213A1 patent drawingFigure 3~4

AI summary

A suspended imaging system includes: a display assembly; an aerial imaging assembly located on a side of the display assembly; a reflective element located on a side of the display assembly and disposed obliquely, wherein the display assembly forms a virtual image of the display assembly on another side of the reflective element, and the virtual image of the display assembly passes through the aerial imaging assembly and form the suspended image on another side of the aerial imaging assembly; and a driving assembly respectively connected to the display assembly and the reflective element. The driving assembly drives the display assembly and the reflective element to rotate.