Parallax Optical Element Calibration for Temperature-Induced Crosstalk

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Solution Overview

Problem

Existing 3D display devices using parallax optical elements face challenges in maintaining image quality due to errors in production or installation processes, leading to crosstalk and degraded image quality, especially with temperature changes affecting the parallax optical element's parameters.

Innovation Solution

An electronic device is equipped with a parallax optical element, a temperature sensor, memory for parameter calibration models, and a processor that determines correction information based on measured temperature and adjusts the parallax optical element's parameters to maintain optimal image quality across different temperature ranges.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If parallax optical element parameters are fixed according to design values, then manufacturing and installation are simplified, but image quality degrades due to errors in production or installation processes

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidparameter accuracy

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by adjusting the parallax optical element parameters based on measured temperature values and calibration models. Instead of fixing parameters to design values, the system dynamically modifies parameters (such as pitch, tilt angle, or position) according to actual temperature conditions and calibration data, thereby compensating for manufacturing and installation errors while maintaining ease of manufacture

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements feedback by measuring the actual temperature of the parallax optical element, comparing it with reference temperature values from calibration models, and automatically adjusting parameters based on the determined correction information. This closed-loop feedback mechanism compensates for manufacturing and installation errors without requiring complex manual calibration processes

Inventive Principle:

Principle #23Feedback

2Reliability

If parallax optical element parameters are adjusted to compensate for temperature changes, then image quality is maintained, but device complexity increases due to additional sensors and control mechanisms

Engineering Contradiction:

Improveimage quality consistencyVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent uses parameter changes to maintain image quality by adjusting parallax optical element parameters based on temperature measurements and calibration models. The system stores multiple calibration models corresponding to different temperature ranges and selects the appropriate model to determine correction information, thereby maintaining reliability without requiring complex real-time calculations or additional hardware beyond simple temperature sensing

Inventive Principle:

Principle #35Parameter changes

3Reliability

If multiple calibration models are stored for different temperature ranges, then temperature-induced image degradation is compensated, but memory requirements and processing complexity increase

Engineering Contradiction:

Improvetemperature compensation accuracyVSAvoidmemory storage capacity

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent applies segmentation by dividing the temperature range into multiple distinct temperature ranges, with each range having its own calibration model. This segmentation allows the system to store calibration data in manageable segments rather than requiring a single large comprehensive model, thereby reducing overall memory requirements while maintaining accurate temperature compensation across the full operating range

Inventive Principle:

Principle #1Segmentation

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 effectively reduces crosstalk and maintains image quality by accurately adjusting the parallax optical element's parameters in response to temperature changes, ensuring consistent stereoscopic image projection.

Implementation Method 1

a temperature sensor configured to measure a temperature around the parallax optical element

Methodology Applied

Scientific EffectTemperature sensing:

Implementation Method 2

a parameter of the parallax optical element, and adjust the parameter of the parallax optical element based on the correction information

Methodology Applied

Scientific EffectThermal expansion: Thermal Expansion

Data Source

PatentUS12242129B2Device and method to calibrate parallax optical element for temperature change

Publication Date: 2025.03.04 SAMSUNG ELECTRONICS CO LTD

AI summary

Provided is an electronic device including a display, a parallax optical element configured to provide light corresponding to an image output from the display to an eyebox of a user, a temperature sensor configured to measure a temperature around the parallax optical element, a memory configured to store a plurality of parameter calibration models for determining correction information in different temperature ranges for a parameter of the parallax optical element, and a processor configured to determine correction information corresponding to the measured temperature based on a parameter calibration model corresponding to the measured temperature among the plurality of parameter calibration models, and adjust the parameter of the parallax optical element based on the correction information.