Motorcycle Lamp Diffuser Ridges for Differentiated Illumination

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Solution Overview

Problem

Existing vehicle lamps, particularly turn signal lamps for motorcycles and scooters, lack the ability to create differentiated areas of illumination using a single diffuser without masks or additional light sources, failing to enhance visibility and aesthetic appeal.

Innovation Solution

A lamp design featuring a casing, light source, reflector, and diffuser with alternating ridges and valleys, utilizing transparent and matte portions to create distinct illumination effects, with protuberances for enhanced brightness and a clear cover for waterproofing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a flat or curved diffuser is used, then the light is diffused uniformly, but the ability to create differentiated lighting effects is lost

Engineering Contradiction:

Improvelight diffusion uniformityVSAvoidlighting effect differentiation

Core Design Contradiction:

Illumination intensityVSAdaptability or versatility

Solution Approach 1:

The diffuser surface is divided into multiple zones with different optical properties: transparent portions allow direct light transmission, matte portions diffuse light in multiple directions, and opaque portions block light. This local differentiation of surface properties enables the creation of distinct lighting zones and patterns without requiring multiple light sources or masks.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The diffuser is segmented into multiple functional regions (transparent, matte, opaque portions) that can independently control light transmission. This segmentation allows each region to perform its specific function, creating complex lighting effects from a single diffuser component.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If multiple light sources or masks are used to create differentiated illumination areas, then lighting effect differentiation is achieved, but device complexity increases

Engineering Contradiction:

Improvelighting effect differentiationVSAvoidnumber of components

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple functional elements (transparent diffuser, matte diffuser, opaque mask) that would traditionally be separate components are merged into a single integrated diffuser structure. This consolidation achieves the same lighting differentiation effect while reducing the number of parts, simplifying assembly, and lowering manufacturing complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single diffuser component performs multiple functions simultaneously: it diffuses light, creates lighting patterns, controls light distribution, and provides structural support. This multi-functionality eliminates the need for separate diffusers, masks, and lighting control mechanisms.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Illumination intensity

If transparent material is used for the diffuser, then light transmission is maximized, but the ability to create shadow areas is reduced

Engineering Contradiction:

Improvelight transmissionVSAvoidshadow area creation

Core Design Contradiction:

Illumination intensityVSAdaptability or versatility

Solution Approach 1:

The diffuser incorporates both transparent and opaque portions in specific spatial arrangements. The transparent portions maximize light transmission and brightness, while the opaque portions create shadow areas and contrast. This local variation in material properties within the same component enables both high light transmission and shadow creation capabilities.

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

The design achieves improved visibility and aesthetic appeal by creating differentiated lighting effects, optimizing energy consumption, and ensuring waterproof integrity.

Implementation Method 1

the reflector is configured to reflect the light emitted by the light source

Methodology Applied

Scientific EffectReflection: Reflection

Implementation Method 2

the diffuser is shaped so as to comprise a plurality of mutually alternating ridges and valleys. This specific shape of the diffuser allows diffusing light in a differentiated manner over the diffuser itself

Methodology Applied

Scientific EffectDiffusion: Diffusion

Implementation Method 3

The effect of absorbing and shielding the light reflected by the reflector at the valleys is thus increased

Methodology Applied

Scientific EffectAbsorption: Absorption (EM radiation)

Data Source

PatentUS12473046B2Lamp for a saddle-ride type vehicle having a diffuser with ridges and valleys

Publication Date: 2025.11.18 PIAGGIO & C SPA

AI summary

A lamp for a saddle-ride type vehicle includes a casing having a front aperture and a light source attached to the casing. A reflector is configured to reflect the light emitted by the light source, and a diffuser is arranged in front of the reflector. A clear cover attaches to the casing and defines, together with the casing, a space in which the light source, the reflector, and the diffuser are arranged. The diffuser is shaped to include mutually alternating ridges and valleys. A vehicle of the type with a saddle includes the lamp.