Light-Emitting Device Holding Unit for ToF Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In three-dimensional measurement using the Time of Flight (ToF) method, large-output light sources require efficient heat dissipation to maintain performance, particularly when used in conjunction with light diffusing members for wider irradiation, as conventional designs often hinder heat release.
Innovation Solution
A light-emitting device with a holding unit positioned on multiple wires connected to the light source, which holds a light diffusing member, facilitating improved heat dissipation by allowing heat to be easily transmitted through the wires and absorbed by the holding unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a large-output light source is used to radiate light to a wider range for three-dimensional measurement, then the irradiation coverage is improved, but heat generation increases making heat release difficult
Solution Approach 1:
The holding unit is divided into multiple holding portions, each corresponding to individual wires. This segmentation allows heat from different regions of the light source to be dissipated through separate pathways (different wires), improving overall heat release efficiency while maintaining wide irradiation coverage
Solution Approach 2:
The holding unit acts as an intermediary component between the light source and the surrounding environment. It receives heat from the light source through the wires and facilitates heat transfer to the air, serving as a heat dissipation mediator that enables the light source to operate at high output without excessive temperature accumulation
2Illumination intensity
If electrical power is increased to achieve higher light intensity, then the measurement effectiveness is improved, but heat generation increases causing overheating
Solution Approach 1:
The holding unit with multiple holding portions is installed in advance on the wires before the light source operates at high power. This preliminary heat dissipation structure is already in place to conduct heat away as the light source increases electrical power, preventing temperature from reaching critical levels that would compromise reliability
Solution Approach 2:
The patent changes the thermal management parameters by introducing a holding unit with specific thermal conductivity characteristics and multiple holding portions. This modifies the heat transfer parameters of the system, allowing higher electrical power to be applied without proportionally increasing temperature, thus enabling higher light intensity with maintained reliability
3Device complexity
If a holding unit is not provided on wires, then the structure is simpler, but heat release efficiency is poor
Solution Approach 1:
The holding unit serves multiple functions simultaneously: it mechanically holds the light diffusing member in position and also acts as a heat dissipation structure through its contact with the wires. This multi-functionality means the additional component is not merely adding complexity but is performing essential dual roles, making the overall design more efficient despite the added element
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 configuration enhances heat release efficiency, enabling higher light intensity and longer operation without overheating, even with increased electrical power, thus supporting more effective three-dimensional imaging and authentication processes.
Implementation Method 1
a light source 20 that emits light
Implementation Method 2
a light diffusing member 30 that diffuses light emitted from the light source
Implementation Method 3
allows heat to be easily transmitted through the wires and absorbed by the holding unit
Data Source
AI summary
A light-emitting device includes a light diffusing member that diffuses light emitted from a light source so that an object to be measured is irradiated with the light; and a holding unit that is provided on plural wires connected to the light source and holds the light diffusing member.