Wearable 3D Display Spectral Separation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current 3D entertainment systems often cause physiological discomfort due to accommodation-vergence conflicts, particularly with large negative parallaxes, which limits their use in cinema and other entertainment experiences.

Innovation Solution

An augmented entertainment system that includes a wearable device with left and right view optical stacks and imagers, which render stereoscopic cinema and device images, using spectral spatial separation techniques to minimize negative parallax and alleviate discomfort by projecting images at varying depths and distances.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If large negative parallax is used in 3D images, then the perceived depth and 3D effect are enhanced, but physiological discomfort and sickness are induced due to accommodation-vergence conflict

Engineering Contradiction:

Improve3D depth perception rangeVSAvoidphysiological discomfort

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The system segments the 3D image content into multiple depth layers, each rendered with appropriate parallax values. Foreground objects can have positive parallax while background objects have negative parallax, allowing the display to accommodate different depth ranges without inducing discomfort from excessive negative parallax on dominant objects.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system dynamically adjusts parallax parameters based on the depth and importance of different objects in the scene. By changing the parallax parameter from large negative values for distant objects to positive values for foreground objects, the system maintains comfortable viewing while preserving depth perception.

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If traditional 3D display methods are used, then simple implementation is achieved, but viewing comfort is limited due to accommodation-vergence conflict

Engineering Contradiction:

Improvedisplay system simplicityVSAvoidviewing comfort

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The system introduces an intermediary processing layer that calculates and applies parallax adjustments based on object depth information. This intermediary computation layer enables comfortable viewing without requiring complex hardware modifications, bridging the gap between simple display implementation and viewing comfort.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Object-affected harmful factors

If negative parallax is minimized, then accommodation-vergence conflict is reduced, but the ability to depict objects in front of the display is limited

Engineering Contradiction:

Improveaccommodation-vergence conflictVSAvoiddepth representation range

Core Design Contradiction:

Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The system dynamically assigns positive or negative parallax values to different objects based on their depth relative to the display plane. Objects in front of the display receive positive parallax while objects behind receive negative parallax, allowing versatile depth representation while keeping individual object parallaxes within comfortable viewing ranges.

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 system effectively reduces physiological discomfort by allowing for the rendering of 3D images with positive parallaxes, enabling comfortable viewing of objects at various depths without the limitations of traditional negative parallax issues.

Implementation Method 1

using spectral spatial separation techniques to minimize negative parallax and alleviate discomfort by projecting images at varying depths and distances

Methodology Applied

Scientific EffectSpectral spatial separation: Dispersion (of waves)

Data Source

PatentUS11363250B2Augmented 3D entertainment systems

Publication Date: 2022.06.14 DOLBY LABORATORIES LICENSING CORP

AI summary

A wearable device comprises a left view optical stack for a viewer to view left view cinema display images rendered on a cinema display and a right view optical stack for the viewer to view right view cinema display images rendered on the cinema display. The left view cinema display images and the right view cinema display images form stereoscopic cinema images. The wearable device further comprises a left view imager that renders left view device display images, to the viewer, on a device display, and a right view imager that renders right view device display images, to the viewer, on the device display. The left view device display images and the right view device display images form stereoscopic device images complementary to the stereoscopic cinema images.