Optical Interface for Electrical Isolation and Light Modification

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Solution Overview

Problem

LED lighting systems face challenges in providing effective electrical isolation of live components and cost-effective implementation of light modifying technologies, particularly in ensuring safety and maintaining traditional bulb aesthetics while minimizing manufacturing complexity and costs.

Innovation Solution

The use of an optically transmissive enclosure with an internal optical interface made of materials like glass or silicone, which can include rare earth elements for light modification, to electrically isolate live components and modify light characteristics, such as filtering specific spectral ranges, while allowing for air circulation and reducing the need for external shatter-resistant coatings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an optical interface is introduced to electrically isolate live components, then safety is improved, but device complexity increases

Engineering Contradiction:
ImprovesafetyVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The optical interface serves multiple functions simultaneously: it electrically isolates live components for safety, modifies light characteristics (color, intensity, distribution), and maintains structural integrity of the lamp. By combining electrical isolation and optical modification in a single component, the patent reduces overall device complexity while improving safety.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The optical interface acts as an intermediary element positioned between the LED light source and the external environment. This intermediary provides electrical isolation while still allowing light transmission and modification, resolving the contradiction by introducing a mediating component that fulfills both safety and optical requirements.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Illumination intensity

If light modifying technologies are implemented, then light quality is improved, but manufacturing costs increase

Engineering Contradiction:
Improvelight qualityVSAvoidmanufacturing costs
Core Design Contradiction:
Illumination intensityVSEase of manufacture

Solution Approach 1:

The patent merges the light modifying function with the electrical isolation function into a single optical interface component. This consolidation eliminates the need for separate light modifying elements, reducing the number of manufacturing steps and material requirements, thereby lowering manufacturing costs while maintaining improved light quality.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The optical interface is designed as a multi-functional component that simultaneously provides electrical isolation and light modification. This universality reduces the total component count and simplifies the manufacturing process, making light quality improvement more cost-effective.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Shape

If traditional bulb aesthetics are maintained, then market acceptance is improved, but design flexibility is reduced

Engineering Contradiction:
Improvetraditional bulb appearanceVSAvoiddesign flexibility
Core Design Contradiction:
ShapeVSAdaptability or versatility

Solution Approach 1:

The patent applies local quality by maintaining the traditional bulb appearance in the external enclosure while allowing internal components (LEDs, optical interface) to have modern, functional designs. The optical interface itself can have various shapes and configurations to optimize light distribution while the outer bulb maintains traditional aesthetics for market acceptance.

Inventive Principle:
Principle #3Local quality

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 solution enhances safety by isolating live electrical components, reduces manufacturing costs, and maintains a traditional bulb appearance while improving light quality by modifying spectral characteristics and reducing phosphor degradation issues.

Implementation Method 1

The optical interface may comprise a phosphor

Methodology Applied
Scientific EffectPhosphorescence: Phosphorescence

Implementation Method 2

The optical interface may comprise a REE. The REE comprises neodymium

Methodology Applied
Scientific EffectRare earth element luminescence: Luminescence

Implementation Method 3

The light passing through the optical interface may be filtered so that the light exiting the optical element exhibits a spectral notch. The spectral notch may occur between the wavelengths of 520 nm and 605 nm

Methodology Applied
Scientific EffectOptical filtering: Filter (optical)

Implementation Method 4

The optical interface is electrically insulating and is configured to electrically isolate at least a portion of the electrical path

Methodology Applied
Scientific EffectElectrical insulation: Dielectric

Implementation Method 5

A passage may be provided in the optical interface. The passage may allow a gas to circulate between the at least one LED and the enclosure

Methodology Applied
Scientific EffectGas convection: Convection

Data Source

PatentUS9759387B2Dual optical interface LED lamp
Publication Date: 2017.09.12 PROSPERINA VENTURES LLC
  • US9759387B2 patent drawing
  • US9759387B2 patent drawing
  • US9759387B2 patent drawing

AI summary

A LED lamp includes an at least partially optically transmissive enclosure and a base connected to the enclosure. A plurality of LEDs are located in the enclosure and are operable to emit light when energized through an electrical path from the base. An optical interface is positioned in the enclosure for electrically isolating a live electrical component and for receiving at least a portion of the light. The optical interface includes a light modifying property for modifying a characteristic of the portion of the light.