Liquid Crystal Shutter Glasses with Attenuation Region

Solution Overview

Problem

Liquid crystal shutter glasses cause flickering due to ambient light, especially under lighting equipment with instantaneous blinking, as their transmission/shielding cycle does not match the lighting cycle, leading to a dim display experience for users.

Innovation Solution

The glasses feature a liquid crystal shutter with a controllable effective shutter region for display light and a light attenuation region outside it, allowing synchronization with the display screen to reduce flickering and maintain brightness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If liquid crystal shutter glasses are used to synchronize with field sequential display, then three-dimensional imaging capability is improved, but flickering occurs due to ambient light transmission

Engineering Contradiction:

Improvethree-dimensional imaging capabilityVSAvoidflickering from ambient light

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The lens is divided into two distinct regions: an effective shutter region that synchronizes with the display to enable 3D imaging, and a light attenuation region that continuously attenuates ambient light. This segmentation allows each region to perform its specific function independently, resolving the contradiction between enabling 3D imaging and preventing flicker

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the lens are assigned different optical properties: the effective shutter region has dynamically controllable transmission for display synchronization, while the light attenuation region has continuous attenuation property. This local differentiation allows the lens to simultaneously achieve 3D imaging capability and flicker reduction

Inventive Principle:

Principle #3Local quality

2Illumination intensity

If liquid crystal shutter continuously attenuates ambient light to reduce flicker perception, then display brightness is improved, but pupil contraction occurs reducing overall visibility

Engineering Contradiction:

Improvedisplay brightnessVSAvoidpupil contraction

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The lens is divided into two distinct regions: an effective shutter region that synchronizes with the display to enable 3D imaging, and a light attenuation region that continuously attenuates ambient light. This segmentation allows each region to perform its specific function independently, resolving the contradiction between enabling 3D imaging and preventing flicker

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the lens are assigned different optical properties: the effective shutter region has dynamically controllable transmission for display synchronization, while the light attenuation region has continuous attenuation property. This local differentiation allows the lens to simultaneously achieve 3D imaging capability and flicker reduction

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If liquid crystal shutter synchronizes transmission/shielding with display cycle, then image separation for multiple viewers is improved, but flickering increases under blinking lighting equipment

Engineering Contradiction:

Improveimage separation for multiple viewersVSAvoidflickering under blinking lighting

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The lens is divided into two distinct regions: an effective shutter region that synchronizes with the display to enable 3D imaging, and a light attenuation region that continuously attenuates ambient light. This segmentation allows each region to perform its specific function independently, resolving the contradiction between enabling 3D imaging and preventing flicker

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the lens are assigned different optical properties: the effective shutter region has dynamically controllable transmission for display synchronization, while the light attenuation region has continuous attenuation property. This local differentiation allows the lens to simultaneously achieve 3D imaging capability and flicker reduction

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

This design effectively reduces flickering and maintains a bright display experience by controlling the liquid crystal shutter's transmission and shielding in sync with the display, while ambient light is attenuated, preventing pupil contraction and enhancing visibility.

Implementation Method 1

a liquid crystal shutter 45 having an effective shutter region 46 in which transmission/shielding of light is controllable and a light attenuation region positioned outside the effective shutter region 46 for attenuating light

Methodology Applied

Scientific EffectLiquid crystal effect: Liquid Crystals

Data Source

PatentUS8797468B2Liquid crystal shutter glasses

Publication Date: 2014.08.05 NEC CORP

AI summary

A liquid crystal shutter glasses comprises a liquid crystal shutter placed within the view angle of the observer of a display apparatus wherein the liquid crystal shutter has an effective shutter region in which the transmission or shielding of incident light is controllable and a light attenuation region positioned outside the effective shutter region for attenuating incident light.