Light Source Unit with Diffuse Reflection Surface for Safety and Shape Control
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Solution Overview
Problem
Existing light source devices lack safety enhancements and fail to generate reflected light with a desired cross-sectional shape, leading to inefficiencies in light distribution and potential safety hazards.
Innovation Solution
A light source unit with a holder containing a diffuse reflection surface that reflects and diffuses light, ensuring safety by redirecting light even if the surface is damaged, and a light source device using curved mirrors to shape the reflected light according to a target cross-sectional shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a diffuser plate is used to diffuse and transmit light, then light distribution is improved, but safety is compromised because damaged or fallen diffuser plates allow direct light emission
Solution Approach 1:
The patent introduces a reflective diffuser plate as an intermediary element that reflects light from the light source to create a diffuse reflection. This mediator ensures that even if the plate is damaged or falls off, the light path is naturally blocked by the housing structure, preventing direct light emission and maintaining safety while achieving proper light distribution.
2Power
If a reflective diffuser plate is used to generate reflected light, then light reflection is improved, but the ability to generate reflected light with a desired cross-sectional shape is insufficient
Solution Approach 1:
The patent applies local quality by creating a recess in the housing that specifically accommodates the reflective diffuser plate at a controlled position and angle. This localized structural modification allows precise control over the cross-sectional shape of the reflected light beam while maintaining efficient reflected light generation, addressing both the power and shape requirements.
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 solution enhances safety by ensuring light is redirected safely and efficiently, and achieves a desired cross-sectional shape for the reflected light, improving both safety and light distribution.
Implementation Method 1
the holder has a diffuse reflection surface that reflects and diffuses at least part of light from the light source toward an object
Data Source
AI summary
Provided is a light source unit capable of enhancing safety and/or generating reflected light having a desired cross-sectional shape, a light source device, and a distance measuring device including the light source unit or the light source device. The light source unit according to the present technology includes a light source and a holder that holds the light source. The holder has a diffuse reflection surface that reflects and diffuses at least part of light from the light source toward an object. The light source device according to the present technology includes a light source and a reflection member that reflects at least part of light from the light source to generate reflected light, in which the reflection member includes a plurality of curved mirrors regularly arranged along a reference plane that the light from the light source enters, and each of the plurality of curved mirrors has curvatures in a first axis direction and a second axis direction orthogonal to each other in the reference plane.