Coated Reflector Lighting Device for Adjustable Illumination Patterns

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Solution Overview

Problem

The high manufacturing costs associated with producing lighting devices that require different optical elements for varying illumination patterns, particularly for street lights and outdoor lighting, which need to adjust based on road conditions and market needs.

Innovation Solution

A lighting device equipped with a reflector featuring a coating on at least one reflective sheet, allowing for adjustable illumination patterns without the need for additional optical elements, thereby reducing manufacturing costs. The reflector's surface coating adjusts the lighting pattern according to road conditions, and the reflective sheets can be rotated to further customize the illumination effect.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If different optical elements (curved or shaped) are used to produce different lighting patterns, then illumination effectiveness is improved, but manufacturing cost increases due to additional molds

Engineering Contradiction:

Improvelighting pattern effectivenessVSAvoidmanufacturing cost

Core Design Contradiction:

Illumination intensityVSEase of manufacture

Solution Approach 1:

The reflector surface is segmented into multiple regions with different coating properties (different reflectivities, absorptivities, or colors). Each segmented region independently controls a portion of the lighting pattern, allowing diverse illumination effects without requiring multiple complete optical elements or molds.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the reflector surface are assigned different local properties through selective coating application. Areas with different lighting requirements receive coatings with appropriate optical characteristics, enabling customized lighting patterns while using a single unified reflector structure.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If optical elements are customized for different road conditions and market needs, then adaptability is improved, but device complexity increases due to multiple optical components

Engineering Contradiction:

Improvelighting pattern adjustabilityVSAvoidnumber of optical elements

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The reflector system incorporates rotatable reflective sheets that can be dynamically adjusted to different angular positions. This mechanical dynamic adjustment allows the same physical reflector to produce different lighting patterns and coverage areas, providing adaptability without requiring multiple fixed optical elements for different conditions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

A single reflector structure with multiple coated regions serves multiple functions by producing different lighting patterns for various road conditions (highways, expressways, bicycle ways, sidewalks, amusement parks). The rotatable mechanism further enhances universality, allowing one device to replace what would traditionally require multiple specialized optical elements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If multiple optical elements are used to meet different market needs, then product versatility is improved, but production time increases due to additional manufacturing steps

Engineering Contradiction:

Improvemarket need coverageVSAvoidmanufacturing efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

Multiple functional regions that would traditionally require separate optical elements are merged into a single reflector structure. The different coated regions are applied to one unified surface, and the rotatable mechanism integrates multiple adjustment functions into a single assembly, significantly reducing the number of separate manufacturing processes and assembly steps.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The reflector employs composite coating structures with multiple layers or regions having different optical properties. These composite coatings can be applied directly to the reflector surface in a integrated manufacturing process, eliminating the need to produce and assemble multiple separate optical elements with different properties.

Inventive Principle:

Principle #40Composite materials

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

Enables cost-effective adjustment of illumination patterns to meet market needs by eliminating the need for multiple optical elements, while providing diverse and customizable lighting effects through the use of a reflector with a coating and rotatable reflective sheets, reducing glare and light pollution.

Implementation Method 1

The reflector includes at least one reflective sheet and a coating partially formed on the at least one reflective sheet... for reflecting a light emitted from the lamp

Methodology Applied

Scientific EffectReflection: Reflection

Data Source

PatentUS10584849B2Lighting device

Publication Date: 2020.03.10 LEOTEK CORP

AI summary

A lighting device including a lamp and a reflector is provided. The reflector is located in a light emitting direction of the lamp and disposed farther away from the lamp for reflecting a light emitted from the lamp. The reflector includes at least one reflective sheet and a coating partially formed on the at least one reflective sheet.