Interchangeable Prism Plate for Downlight Beam Angle Adjustment

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing downlights are inflexible in adjusting beam angles, requiring multiple types to meet different lighting needs, which increases inventory costs and limits product versatility.

Innovation Solution

A lighting device featuring a prism plate with refraction optical components, an anti-glare cup, a housing, a heat dissipation assembly, and a lenses plate, allowing for easy exchange of prism plates to change beam angles, reducing inventory costs and improving product flexibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple types of downlights are designed to meet different lighting needs, then lighting versatility is improved, but inventory cost increases

Engineering Contradiction:
Improvelighting versatilityVSAvoidinventory cost
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The downlight system is segmented into a base unit and interchangeable prism plates. The prism plates are further segmented into different optical specifications (beam angles, refractive indices) that can be independently selected and swapped. This allows the core housing and light source to be reused across multiple configurations, reducing the need to maintain inventory of complete downlight assemblies for different lighting needs.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A single universal housing design accommodates multiple prism plate types through standardized mounting interfaces. The housing serves multiple functions: structural support, heat dissipation, and universal mounting for different optical configurations. This multi-functionality allows one housing type to support diverse lighting applications by simply changing the prism plate, thereby reducing inventory requirements.

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

2Adaptability or versatility

If different types of downlights are produced to fulfill different lighting needs, then lighting adaptability is improved, but device complexity increases

Engineering Contradiction:
Improvelighting adaptabilityVSAvoidproduct variety
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system divides the downlight into modular components where only the prism plate varies by application. The housing, heat dissipation assembly, and mounting mechanisms remain standardized. This segmentation reduces device complexity by limiting the number of unique component combinations that need to be designed, manufactured, and managed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different lighting needs are met by changing optical parameters of the prism plate (beam angle, refractive index, lens configuration) rather than changing the entire downlight design. This parameter-based differentiation allows for simplified manufacturing and inventory management while maintaining lighting adaptability across various applications.

Inventive Principle:
Principle #35Parameter changes

3Ease of operation

If prism plates are made interchangeable with easy exchange, then ease of operation is improved, but housing design complexity increases

Engineering Contradiction:
Improveprism plate exchangeabilityVSAvoidhousing structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The housing is pre-designed with integrated mounting features (such as snap-fit slots, clips, or threaded interfaces) that prepare the structure for easy prism plate installation. These preliminary structural preparations allow users to exchange prism plates without requiring complex tools or assembly steps, while the housing complexity is confined to the manufacturing stage rather than the user operation stage.

Inventive Principle:
Principle #10Preliminary action

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 flexible adjustment of beam angles without needing multiple downlight types, reducing inventory costs and enhancing product versatility while improving heat dissipation and user convenience.

Implementation Method 1

The light beam passing through the refraction optical component of the prism plate converts to a light beam. The main beam angle is determined by the optical refractive index of the prism plate.

Methodology Applied
Scientific EffectRefraction: Refraction

Implementation Method 2

The lenses plate includes lenses facing the LED module of the light source board. The light emitted from the LED module, after passing through the lenses plate, appears to be a lens beam.

Methodology Applied
Scientific EffectLens focusing: Lens

Implementation Method 3

the heat dissipation assembly carries the light source board. The heat dissipation assembly is connected to the housing.

Methodology Applied
Scientific EffectHeat dissipation: Heat Sink

Data Source

PatentUS10900635B2Lighting device
Publication Date: 2021.01.26 XIAMEN ECO LIGHTING CO LTD
  • US10900635B2 patent drawing
  • US10900635B2 patent drawing
  • US10900635B2 patent drawing

AI summary

A lighting device includes a prism plate, an anti-glare cup, a housing, a light source board, a heat dissipation assembly, and a lenses plate. The prism plate includes a refraction optical component. For example, make many micro-lenses on a surface of a transparent plastic material or a transparent plastic plate by compression molding, cutting, and injection molding. The combination of these optical lenses adjusts the beam angle of light to fulfill users' needs. The surface material of the anti-glare cup features on preventing visual glare. The housing is used to fasten the prism plate and the anti-glare cup. The light source board is for installation of a LED module. Besides, the heat dissipation assembly carries the light source board. The heat dissipation assembly is connected to the housing.