Laser Protection Helmet with Segmented Metallic Radiation Shield

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Solution Overview

Problem

Existing laser protection devices, such as helmets, lack effective radiation protection and comfort features, particularly during laser welding processes, where users are exposed to excessive brightness and potential eye damage.

Innovation Solution

The proposed laser protection device incorporates a radiation protection unit made of laser-absorbing metallic material, extending around the glare protection filter, along with a shield unit and a sensor unit for automatic darkening and mechanical protection. The device also features a nose cutout and adjustable components for enhanced comfort and fit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a laser protection device uses a glare protection filter with automatic darkening, then protection against excessive brightness is improved, but protection against laser radiation reaching peripheral areas is insufficient

Engineering Contradiction:

Improveprotection against excessive brightnessVSAvoidlaser radiation exposure

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The radiation protection unit is divided into multiple segments including side walls, rear wall, and nasal bridge protection elements that collectively cover all peripheral areas around the glare protection filter, ensuring comprehensive laser radiation blocking

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The radiation protection unit acts as an intermediary structure between the glare protection filter and the external environment, specifically blocking laser radiation from reaching areas not covered by the automatic darkening filter

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If a radiation protection unit is added around the glare protection filter, then protection against laser radiation is improved, but device complexity increases

Engineering Contradiction:

Improvelaser radiation protectionVSAvoidstructure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The radiation protection unit is integrated with the shield unit structure, combining multiple protection functions into a unified design that reduces overall device complexity while maintaining comprehensive protection

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The radiation protection unit serves multiple functions simultaneously: blocking laser radiation from side, rear, and nasal bridge areas, while also providing structural support and integration with the shield unit

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of operation

If the glare protection filter has a nose cutout for comfort, then wearing comfort is improved, but protection against laser radiation reaching the nasal area is reduced

Engineering Contradiction:

Improvewearing comfortVSAvoidlaser radiation exposure to nasal area

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The radiation protection unit provides localized protection specifically in the nasal bridge area where the cutout is present, using laser-absorbing material to block radiation while allowing the cutout to maintain its comfort function

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

Additional radiation protection elements are positioned in the nasal bridge area to act as intermediaries that block laser radiation from reaching the nose while allowing the cutout to maintain comfort

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 solution provides effective protection against laser radiation and mechanical hazards, ensuring user safety during welding processes while maintaining high comfort and adjustability, thus addressing the limitations of existing devices.

Implementation Method 1

a radiation protection unit, which extends around the glare protection filter and at least partially consists of a laser-absorbing, in particular metallic, material

Methodology Applied

Scientific EffectLaser absorption: Absorption (EM radiation)

Implementation Method 2

at least one optical glare protection filter... with at least one sensor unit which is configured for a detection of a working state and for controlling, as a function thereof, a transmittance of the glare protection

Methodology Applied

Scientific EffectOptical absorption and transmittance control: Absorption (EM radiation)

Data Source

PatentUS20250025346A1Laser protection device, in particular laser protection helmet

Publication Date: 2025.01.23 OPTREL HOLDING AG

AI summary

A laser protection device, in particular a laser protection helmet, includes at least one optical glare protection filter, which in particular has a nose cutout, further includes at least one sensor unit which is configured for a detection of a working state and for actuating, as a function thereof, a transmittance of the glare protection filter, and includes at least one shield unit which is configured to protect a face of a user and in which the at least one glare protection filter is fixedly accommodated, wherein the laser protection device further comprises at least one radiation protection unit, which extends around the glare protection filter and at least partially consists of a laser-absorbing, in particular metallic, material.