Projecting Illumination Device with Central and Peripheral Lenses

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Solution Overview

Problem

Current LED-based projecting systems fail to meet the demands for high lumen output and image quality in entertainment lighting, often resulting in low efficiency due to excessive power consumption, light loss, and color artifacts, as they struggle to maintain etendue and design flexibility with encapsulated LEDs and hybrid focusing surfaces.

Innovation Solution

The solution involves a light source module with a central and peripheral lens system that optimizes light distribution by creating a source light beam with adjustable divergence angles, allowing for efficient light collection and projection, while also incorporating a cooling module to manage heat effectively, particularly for high-power LEDs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If multiple LEDs are added to increase lumen output, then light output is improved, but power consumption increases and efficiency decreases

Engineering Contradiction:

Improvelumen outputVSAvoidpower consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The patent divides the illumination system into multiple independent LED modules, each with its own optical components. This segmentation allows for optimized light collection from each LED while maintaining overall high lumen output, improving efficiency by reducing redundant optical paths and minimizing light loss in each segment.

Inventive Principle:

Principle #1Segmentation

2Illumination intensity

If a large number of light sources are fitted into the fixture, then lumen output is improved, but the fixture space requirements increase

Engineering Contradiction:

Improvelumen outputVSAvoidfixture space

Core Design Contradiction:

Illumination intensityVSArea of stationary object

Solution Approach 1:

The patent implements a nested arrangement where multiple LED modules are positioned concentrically around a central optical axis. The LEDs are arranged in multiple layers or rings at different radial distances, allowing maximum light source density within a compact cylindrical fixture volume, thereby increasing lumen output without proportionally increasing fixture space.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Ease of manufacture

If encapsulated LEDs with hybrid focusing surfaces are used, then manufacturing is simplified, but etendue maintenance and design flexibility are reduced

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoiddesign flexibility

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent introduces separate optical elements (lenses or reflectors) as intermediary components between the encapsulated LEDs and the target area. These intermediary optical components provide the necessary focusing and collimating functions while allowing the LEDs themselves to remain simple encapsulated devices, thus maintaining manufacturing simplicity while restoring design flexibility through the adjustable intermediary optics.

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 approach enhances the efficiency of light projection systems by optimizing light distribution within the acceptance angle of the projecting system, reducing light loss, and minimizing color artifacts, thereby achieving improved lumen output and image quality.

Implementation Method 1

The light collecting means comprises a central lens part and a peripheral lens part... The light collecting means is adapted to collect light from the light source and generate a source light beam

Methodology Applied

Scientific EffectRefraction: Refraction

Implementation Method 2

The illumination device may further comprise a cooling module adapted to cool the light source

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentEP2517066B1Projecting illumination device with multiple light sources

Publication Date: 2022.02.23 MARTIN PROFESSIONAL

Figure 1a~1b
Figure 2a
Figure 2b

AI summary

The present invention relates to an illumination device illuminating an optical gate and projecting an image of the optical gate towards a target surface. The illumination device comprises a light source module generation light, an aperture delimiting the optical gate and a projecting system adapted to image the optical gate at a target surface. The light source module comprises a number of light sources and a number of light collecting means. The light collecting means comprise a central lens aligned along and a peripheral lens at least partially surrounding the central lens. The central lens collects and converts a first part of the light from the light source images the light source between the aperture the projecting system. The peripheral lens part collects and converts a second part of said light from said light source and is adapted to concentrate said second part of said light at said aperture.