Motion-Sensor Light Diffusion Control for One-Handed Adjustment

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Solution Overview

Problem

Conventional illumination devices face usability issues in adjusting light diffusion degree due to unstable operation when using touch-based controls, often requiring both hands, which hinders fine adjustments.

Innovation Solution

An illumination system equipped with a motion sensor that controls the diffusion degree of light emission based on motion input, allowing single-handed operation and improved usability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If touch-based control is used to adjust diffusion degree, then the illumination device can be controlled, but operation becomes unstable and fine adjustment becomes difficult

Engineering Contradiction:

Improveoperation stabilityVSAvoidfine adjustment precision

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent replaces the touch-based mechanical interaction system with an acoustic wave-based control system. The acoustic wave sensor detects vibrations generated by the user's input, and these vibrations are converted into control signals for adjusting the diffusion degree. This substitution eliminates the instability inherent in touch-based control while enabling precise fine adjustments through the sensitivity of acoustic vibration detection.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If terminal device is held with one hand and screen is operated, then operation efficiency improves, but both hands become occupied making control difficult

Engineering Contradiction:

Improveoperation efficiencyVSAvoidcontrol stability

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The patent replaces the visual-touch interface requiring hand coordination with an acoustic interface that can be operated through voice or subtle vibrations. This allows the user to hold the terminal device with one hand while controlling the diffusion degree adjustment through acoustic input, thereby maintaining both operation efficiency and control stability without occupying both hands.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If conventional adjustment method is used, then the system can be controlled, but usability deteriorates when both hands are occupied

Engineering Contradiction:

Improveusability in different scenariosVSAvoidoperational convenience

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent enhances the control system's universality by introducing acoustic wave-based control that can function in various scenarios regardless of hand occupancy. The acoustic sensor can detect both intentional vibrations from the user and voice commands, allowing the system to adapt to different usage situations (one-hand operation, both-hands occupied, fine adjustment needs) through a single unified control mechanism, thereby improving usability across diverse scenarios.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250383068A1Illumination system

Publication Date: 2025.12.18 JAPAN DISPLAY INC

AI summary

According to an aspect, an illumination system includes an illumination device controllable with respect to a diffusion degree of light emitted from a light source, and a control device including a motion sensor and configured to control the diffusion degree of the illumination device in accordance with output from the motion sensor.