Active Passive Illumination System Glare Reduction

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Solution Overview

Problem

Conventional illumination systems lack flexibility and efficiency in distributing light to large target areas without causing glare, as they often rely solely on direct light sources and fail to effectively utilize indirect illumination.

Innovation Solution

The system combines active illumination devices with light-emitting elements and redirecting optics, along with passive illumination devices that receive and redirect indirect light, allowing for customizable light distribution by directing light in specific angular ranges to minimize glare and efficiently cover larger areas.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If conventional illumination systems use direct light sources to illuminate large target areas, then illumination coverage is provided, but glare is caused and intensity distribution is uneven

Engineering Contradiction:

Improvetarget area coverageVSAvoidglare

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The illumination system is segmented into active illumination devices (containing LEEs and redirecting optics) and passive illumination devices (containing only redirecting optics). This segmentation allows the active devices to control light direction while passive devices distribute light across larger areas, reducing glare and improving intensity uniformity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Passive illumination devices act as intermediaries that receive indirect light from active illumination devices and redirect it towards the target surface. This intermediary role enables better light distribution control, directing light at angles close to normal incidence to minimize glare while covering larger areas with uniform intensity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If conventional illumination systems use direct light sources, then illumination is provided, but design flexibility and light distribution efficiency are limited

Engineering Contradiction:

Improvedesign flexibilityVSAvoidlight distribution efficiency

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The redirecting optics in both active and passive illumination devices serve multiple functions: they redirect light in specific angular ranges, control intensity distribution, and direct light towards target surfaces at optimal angles. This multi-functionality enhances both design flexibility and light distribution efficiency without requiring separate components for each function.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system utilizes parameter changes in light direction and angular ranges through the redirecting optics. By controlling the angular ranges of direct and indirect light from active devices and the redirection angles of passive devices, the system achieves flexible intensity distribution and efficient light utilization across various照明 scenarios.

Inventive Principle:

Principle #35Parameter changes

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 provides substantial design flexibility and efficient light distribution, reducing glare by directing light at angles close to normal incidence, effectively illuminating large areas with minimal variation in intensity and adhering to glare standards.

Implementation Method 1

each of the active illumination devices comprising one or more light emitting elements (LEEs)

Methodology Applied

Scientific EffectLight emission: Light

Implementation Method 2

the first redirecting optics are arranged and configured to redirect light emitted by the one or more LEEs in a first angular range as (i) first direct light in a second angular range and (ii) indirect light in a third angular range

Methodology Applied

Scientific EffectLight redirection: Reflection

Implementation Method 3

the second redirecting optics are arranged and configured to redirect the indirect light received from one or more of the active illumination devices and to provide the redirected light as second direct light in one or more fourth angular ranges

Methodology Applied

Scientific EffectLight redirection: Reflection

Data Source

PatentUS10520663B2Illumination system based on active and passive illumination devices

Publication Date: 2019.12.31 QUARKSTAR LLC

AI summary

Illumination systems are described for illuminating a target area, e.g., a floor of a room, using active illumination devices in optical communication with passive illumination devices. The active and passive illumination devices of the illumination system are configured and arranged relative to each other in a variety of ways so a variety of intensity distributions can be provided by the illumination system. Such illumination system is implemented to provide light for particular lighting applications, including office lighting, garage lighting, or cabinet lighting.