Eyewear Pupil Diameter Measurement Brightness Correction

Solution Overview

Problem

Existing eyewear technologies are unable to accurately measure pupil diameter while considering screen brightness, and are not suitable for eyewear other than light-shielding goggles.

Innovation Solution

The development of pupil diameter measurement eyewear that includes a screen brightness acquisition unit to correct pupil diameter measurements, along with an imaging unit and a pupil diameter calculation unit to determine the pupil diameter after brightness correction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If light-shielding goggles are used for pupil imaging, then pupil diameter can be measured, but the device is not suited to eyewear other than light-shielding goggles and does not consider screen brightness

Engineering Contradiction:

Improvesuitability for different eyewear typesVSAvoidpupil diameter measurement accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent applies parameter changes by dynamically adjusting the illumination intensity based on screen brightness measurements. The illumination intensity is changed according to the detected screen brightness to maintain optimal pupil imaging conditions across different display environments, enabling accurate pupil diameter measurement while adapting to various eyewear types and screen conditions.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If screen brightness is not considered in pupil diameter measurement, then measurement can be performed, but measurement accuracy is compromised due to brightness variations

Engineering Contradiction:

Improvemeasurement capabilityVSAvoidpupil diameter measurement accuracy

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The patent implements feedback by continuously detecting screen brightness and using this information to adjust illumination intensity. The brightness detection unit measures screen brightness, and the illumination intensity is modified based on this feedback to maintain consistent pupil imaging quality across varying brightness conditions, thereby preserving measurement accuracy while maintaining measurement capability.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent applies parameter changes by dynamically adjusting the illumination intensity based on screen brightness measurements. The illumination intensity is changed according to the detected screen brightness to maintain optimal pupil imaging conditions across different display environments, enabling accurate pupil diameter measurement while adapting to various eyewear types and screen conditions.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If illumination intensity is not adjusted for screen brightness, then device structure remains simple, but measurement accuracy deteriorates due to brightness correction needs

Engineering Contradiction:

Improvedevice structure simplicityVSAvoidpupil diameter measurement accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent implements feedback by continuously detecting screen brightness and using this information to adjust illumination intensity. The brightness detection unit measures screen brightness, and the illumination intensity is modified based on this feedback to maintain consistent pupil imaging quality across varying brightness conditions, thereby preserving measurement accuracy while maintaining measurement capability.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent applies universality by integrating multiple functions into a single system: the brightness detection unit serves both to measure screen brightness for correction purposes and to trigger appropriate illumination intensity adjustments. This multi-functional approach enables accurate pupil diameter measurement across different display conditions while managing device complexity through unified component design.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250040805A1Eyewear equipped with pupil diameter measurement function

Publication Date: 2025.02.06 NATSUME RES INST

AI summary

[Problem] To provide an eyewear capable of appropriately measuring a pupil diameter in consideration of a screen brightness. [Solution] This eyewear for pupil diameter measurement has a display screen and is for measuring the pupil diameter of a target person, the eyewear having: an image brightness acquisition part for acquiring a screen brightness which is information pertaining to the brightness of a display screen; an imaging part for acquiring a target person image which includes the pupil of the target person; and a pupil diameter calculation part for using the screen brightness and the target person image to obtain the pupil diameter of the target person after brightness correction.