Synthesized Light Generation With Shifted Timing for Noise Reduction

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Solution Overview

Problem

Existing technologies struggle to effectively reduce optical interference noise while maintaining high light utilization efficiency, particularly in applications requiring accurate detection, measurement, or imaging, and there is a need for methods to minimize optical noise in display and optical communication technologies.

Innovation Solution

The method involves shifting the light emission timing between different light emission points and using a partially discontinuous surface to create optical path length variations, allowing for signal accumulation along the time direction and intensity summation, thereby reducing optical noise.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional methods are used to reduce optical interference noise, then optical noise is reduced, but light utilization efficiency deteriorates

Engineering Contradiction:

Improveoptical interference noiseVSAvoidlight utilization efficiency

Core Design Contradiction:

Object-affected harmful factorsVSLoss of energy

Solution Approach 1:

The light emitting area is divided into multiple light emission points that emit light at different timings. This segmentation allows the system to reduce optical interference noise through temporal separation while maintaining high light utilization efficiency by coordinating the emission from each segment

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Light emission is performed periodically with shifted timing between different light emission points. This periodic action with temporal offset enables signal accumulation along the time direction while maintaining efficient light utilization across the entire light emitting area

Inventive Principle:

Principle #19Periodic action

2Object-affected harmful factors

If signal accumulation along time direction is implemented, then optical noise is reduced, but device complexity increases

Engineering Contradiction:

Improveoptical noiseVSAvoidlight emission control complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The light emission timing is dynamically shifted between different light emission points rather than using fixed simultaneous emission. This dynamic temporal control enables signal accumulation and noise reduction while the complexity is managed through systematic timing control rather than complex spatial arrangements

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If multiple light emission points are used with shifted timing, then measurement precision is improved, but device complexity increases

Engineering Contradiction:

Improvedetection accuracyVSAvoidlight source structure complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The solution transitions from spatial arrangement to temporal dimension by shifting light emission timing between different points. This dimensional change from space to time enables improved measurement precision through signal accumulation without requiring complex spatial device structures

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 approach reduces optical noise while maintaining high light utilization efficiency, enabling accurate signal processing and data analysis, and improving the quality of optical communication and display technologies.

Implementation Method 1

using a partially discontinuous surface to create optical path length variations

Methodology Applied

Scientific EffectOptical path length variation: Refraction

Implementation Method 2

using a partially discontinuous surface to create optical path length variations

Methodology Applied

Scientific EffectLight reflection: Reflection

Implementation Method 3

allowing for signal accumulation along the time direction and intensity summation

Methodology Applied

Scientific EffectSignal accumulation:

Implementation Method 4

shifting the light emission timing between different light emission points

Methodology Applied

Scientific EffectTemporal separation:

Data Source

PatentUS20250224087A1Synthesized light generation method, optical characteristic converting component, light source, optical noise reduction method, measurement method, imaging method, signal processing and/or data analysis method, data analysis program, display method, communication method, service providing method, optical device, and service providing system

Publication Date: 2025.07.10 JAPAN CELL

AI summary

A light source emits modulation light and irradiates a measured object with the modulation light, and a measurer receives modulated detection light obtained from the measured object. Charge is accumulated with respect to a relative exposure timing in the measurer according to the modulated detection light. Using a variation profile of charge accumulation values respectively relating to the relative exposure timings, a system controller calculates distance to the measured object.