Laser Irradiation Device Safety via Integrated Diffusion Absorption
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Solution Overview
Problem
Conventional light irradiation devices with laser light sources face safety issues when the light diffusion member is damaged or falls, allowing direct laser light emission outside, potentially causing harm.
Innovation Solution
The implementation of a reflection diffusion plate with a light transmission diffusion layer and an absorption member to prevent direct laser light emission by diffusing and absorbing laser light, ensuring safety even if the diffusion member is broken or falls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a light diffusion member is provided on the optical path of laser light to diffuse laser light, then safety is improved by preventing direct laser light emission, but the device complexity increases due to additional components
Solution Approach 1:
The patent combines the light diffusion function and laser light absorption function into a single integrated member. The light diffusion member includes a light diffusion portion for diffusing laser light and a light absorption portion for absorbing laser light, eliminating the need for separate diffusion and absorption components. This merging reduces device complexity while maintaining the safety function of preventing direct laser light emission.
Solution Approach 2:
The light diffusion member is designed to perform multiple functions: it diffuses laser light for normal operation and absorbs laser light as a backup safety mechanism. If the diffusion portion fails or is bypassed, the absorption portion activates to prevent direct laser light emission. This multi-functionality ensures safety without requiring additional dedicated safety components.
2Object-affected harmful factors
If a light diffusion member is used to convert laser light into diffusion light, then the harmful factors are reduced by preventing direct laser light irradiation, but the device complexity increases due to additional optical components
Solution Approach 1:
The patent merges the light diffusion function and laser light absorption function into a single integrated member. The light diffusion member includes a light diffusion portion for diffusing laser light and a light absorption portion for absorbing laser light, eliminating the need for separate diffusion and absorption components. This merging reduces device complexity while maintaining the safety function of preventing direct laser light emission.
Solution Approach 2:
The light diffusion member acts as an intermediary between the laser light source and the external environment. It includes a light diffusion portion that converts direct laser light into diffusion light, and a light absorption portion that absorbs any remaining or leaked laser light. This intermediary structure effectively reduces laser light hazard while integrating multiple protective functions into a single component.
3Adaptability or versatility
If multiple optical components are used in the light irradiation device, then the optical functionality is improved, but the device complexity increases and the device size increases
Solution Approach 1:
The patent combines the light diffusion function and laser light absorption function into a single integrated member. The light diffusion member includes a light diffusion portion for diffusing laser light and a light absorption portion for absorbing laser light, eliminating the need for separate diffusion and absorption components. This merging reduces device complexity while maintaining the safety function of preventing direct laser light emission.
Solution Approach 2:
The light diffusion member is designed to perform multiple functions: it diffuses laser light for normal operation and absorbs laser light as a backup safety mechanism. If the diffusion portion fails or is bypassed, the absorption portion activates to prevent direct laser light emission. This multi-functionality ensures safety without requiring additional dedicated safety components.
Data Source
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AI summary
A light irradiation device includes a laser light source configured to emit laser light; and a light diffusion member configured to convert the laser light into diffusion light. Light based on the laser light is emitted to an outside from a light output unit via an output optical path or two or more output optical paths including an optical path which the diffusion light passes through. The light diffusion member includes a diffusion optical path changing member configured to convert the laser light into the diffusion light and change an optical path. The output optical path does not include an optical path in which laser light emitted toward the diffusion optical path changing member goes straight at a light diffusion position according to the diffusion optical path changing member to go toward the light output unit.