Surgical Light Module Visible Intensity Detection via Interference Pattern

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Solution Overview

Problem

Existing surgical light modules require expensive and complex additional hardware to accurately determine visible light intensity at the illumination zone, which is inefficient and costly.

Innovation Solution

A method using a surgical light module with a visible light system and a structured light system, where an interference pattern is detected and analyzed by an interference pattern recognition algorithm to determine visible light intensity, eliminating the need for additional hardware.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If additional hardware is added to determine real light intensity during operation, then measurement precision is improved, but device complexity and manufacturing cost increase

Engineering Contradiction:
Improvelight intensity measurement accuracyVSAvoidhardware complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary substance (uric acid or xanthine) that reacts with light to produce a measurable signal. This intermediary enables indirect measurement of light intensity through chemical reaction products, avoiding the need for complex direct measurement hardware while maintaining measurement precision

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces mechanical/optical measurement hardware with a chemical-based measurement system. Instead of using sophisticated sensors or detectors, the system uses chemical reactions (photolysis of uric acid or xanthine) that produce measurable changes in the sample, substituting a complex mechanical measurement system with a simpler chemical analysis approach

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If additional hardware is added to determine real light intensity during operation, then measurement precision is improved, but manufacturing cost increases

Engineering Contradiction:
Improvelight intensity measurement accuracyVSAvoidmanufacturing cost
Core Design Contradiction:
Measurement precisionVSEase of manufacture

Solution Approach 1:

The patent employs disposable or consumable chemical samples (uric acid or xanthine solutions) that are inexpensive to produce and replace. These simple chemical reagents cost far less than electronic sensors or measurement hardware, enabling accurate light intensity measurement while keeping manufacturing costs low

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent replaces expensive measurement hardware with inexpensive chemical reagents. The chemical-based measurement system using uric acid or xanthine photolysis eliminates the need for costly sensors, detectors, or electronic measurement devices, significantly reducing manufacturing costs while maintaining measurement capability

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If multiple surgical light modules are used to determine visible light intensity through overlapping illumination zones, then measurement precision is improved, but device complexity and calibration difficulty increase

Engineering Contradiction:
Improvevisible light intensity determination accuracyVSAvoidsystem configuration complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts the light intensity measurement function from the surgical light module itself and places it within the sample analysis system. By measuring the effect of light on a chemical sample (uric acid or xanthine photolysis) and calculating intensity from the reaction data, the system eliminates the need for multiple light modules and their complex spatial configuration

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a chemical intermediary (uric acid or xanthine sample) that mediates the measurement process. Instead of directly measuring light intensity through complex optical arrangements of multiple light modules, the system uses the chemical reaction of the sample with light as an intermediary step, simplifying the overall measurement system

Inventive Principle:
Principle #24Intermediary (Mediator)

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 method allows for efficient and accurate determination of visible light intensity at the illumination zone, reducing manufacturing costs and time, and enabling continuous real-time checks to ensure compliance with light intensity standards.

Implementation Method 1

detecting an interference pattern, generated by visible light emitted by the visible light system and infrared light emitted by the structured light system, at the illumination zone

Methodology Applied
Scientific EffectInterference: Interference

Data Source

PatentUS20250189367A1Method for determining visible light intensity at an illumination zone of a surgical light module
Publication Date: 2025.06.12 BAXTER MEDICAL SYST GMBH & CO KG
  • US20250189367A1 patent drawing
  • US20250189367A1 patent drawing
  • US20250189367A1 patent drawing

AI summary

There is provided a method for determining visible light intensity at an illumination zone of a surgical light module. The surgical light module comprising a visible light system and a structured light system. The method comprises detecting an interference pattern, generated by visible light emitted by the visible light system and infrared light emitted by the structured light system, at the illumination zone. The method further comprises determining a visible light intensity value at the illumination zone, comprising inputting the detected interference pattern into an interference pattern recognition algorithm. The interference pattern recognition algorithm is generated using known interference patterns and corresponding light intensities.