Multi-Channel Lamp System with Mixed Spectrum Control

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Solution Overview

Problem

Current lighting systems do not effectively regulate melatonin production based on circadian rhythms, as they lack the ability to seamlessly transition between low-blue and high-blue light spectrums to align with natural day-night cycles, impacting sleep and alertness.

Innovation Solution

A composite light source comprising a low-blue and a high-blue component light source with a control unit and optical system to mix and adjust light emissions, providing intermediate white light with a correlated color temperature between 2700 K to 3000 K, and switching between low-blue for sleep and high-blue for alertness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a single light source emits high-blue light to provide high illuminance and alertness, then alertness is improved, but melatonin suppression occurs and sleep quality deteriorates

Engineering Contradiction:

ImproveilluminanceVSAvoidmelatonin suppression

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The lighting system is divided into multiple independent LED channels with different spectral characteristics (low-blue and high-blue components). Each channel can be controlled separately to emit light with specific properties, allowing the system to segment the lighting function into alertness-promoting and sleep-friendly modes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system dynamically adjusts the spectral composition and intensity of light emissions by independently controlling multiple LED channels. The control system varies the relative contribution of low-blue and high-blue light components based on temporal context (day/night) to optimize both illuminance and circadian effects.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If a light source transitions between low-blue and high-blue spectrums to align with circadian rhythms, then circadian regulation is improved, but system complexity increases

Engineering Contradiction:

Improvecircadian rhythm alignmentVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple LED components with different spectral properties are merged into a single integrated lighting device. The low-blue and high-blue LED channels are combined within one fixture, allowing seamless transition between spectral modes without requiring multiple separate light sources or complex mechanical switching mechanisms.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The lighting device performs multiple functions through a single system: it provides general illumination, regulates circadian rhythms, and adapts to different temporal contexts (morning/alertness and evening/sleep). The same physical device handles both low-blue and high-blue spectral emissions, eliminating the need for separate specialized light sources.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If multiple LED components are used to provide adjustable melatonin suppression effects, then circadian lighting control is improved, but manufacturing complexity increases

Engineering Contradiction:

Improvemelatonin suppression adjustmentVSAvoidmanufacturing complexity

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The LED assembly is segmented into distinct functional groups (low-blue LEDs and high-blue LEDs), each mounted on separate substrates or circuit boards. This segmentation allows for modular manufacturing where each LED type can be produced and tested independently before final assembly, simplifying the overall manufacturing process despite the multi-component nature of the device.

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 enables a light source that promotes melatonin production at night and suppresses it in the morning, enhancing sleep quality and alertness throughout the day by mimicking natural daylight cycles.

Implementation Method 1

an optical system to combine and mix the light from the low-blue and high-blue light sources

Methodology Applied

Scientific EffectLight mixing:

Implementation Method 2

the light-filtering device is able to filter a blue light component of the visible light so as to reduce the blue light component within the visible light emitted by the light-emitting device

Methodology Applied

Scientific EffectOptical filtering: Filter (optical)

Data Source

PatentUS9974138B2Multi-channel lamp system and method with mixed spectrum

Publication Date: 2018.05.15 SAVANT TECHNOLOGIES LLC

AI summary

Composite light sources and methods use a low-blue component light source emitting first substantially white light and a high-blue component light source emitting second substantially white light. The second substantially white light has a greater correlated color temperature than the first substantially white light. The first and second substantially white light combine to provide substantially intermediate warm-white light.