Optical Projection Device Metal Heat Dissipation Holder
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Solution Overview
Problem
Optical projection devices face issues with heat dissipation, leading to reduced quality of projected light due to the use of plastic materials and enclosed spaces that hinder efficient heat dissipation from the laser.
Innovation Solution
The integration of metal components within the holder of the optical projection device, utilizing insert molding technology and a light-absorbing layer to enhance heat dissipation and prevent light reflection, along with a ceramic substrate to assist in heat dissipation and structural reinforcement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an enclosed space is formed by plastic components (holder, DOE, collimating lens, printed circuit board), then dust or debris is prevented from entering the interior, but heat generated by the laser cannot be dissipated quickly
Solution Approach 1:
The holder is constructed as a composite structure combining plastic material and metal components. The plastic portion provides dust prevention and structural enclosure, while the metal components (heat dissipation parts) provide thermal conduction pathways. This composite approach allows simultaneous achievement of dust sealing and heat dissipation functions.
Solution Approach 2:
Metal heat dissipation components serve as intermediary elements between the laser light source and the external environment. These metal parts are embedded in the plastic holder and thermally coupled to the laser, acting as heat transfer mediators that conduct heat from the enclosed space to the exterior without compromising the dust-sealed enclosure.
2Object-generated harmful factors
If a light-absorbing layer is added to the metal component, then light reflection is prevented, but device complexity increases
Solution Approach 1:
The light-absorbing layer is applied locally only to the surfaces of metal components that would otherwise reflect light. This selective coating approach addresses the light reflection problem only where necessary, rather than modifying the entire device structure, thus minimizing the increase in device complexity.
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 effectively dissipates heat generated by the laser and electric components, improving the quality of projected light while minimizing device size and enhancing structural strength.
Implementation Method 1
The two metal components 30 are opposite to each other and each are formed on the holder 10 or embedded in the holder 10... effectively dissipates heat generated by the laser and electric components
Implementation Method 2
utilizing insert molding technology and a light-absorbing layer to enhance heat dissipation and prevent light reflection
Data Source
AI summary
An optical projection device with metallic components for heat dissipation and for structural reinforcement includes a holder and two opposing metal components opposite to each other. The holder comprises lens receiving groove, electric component receiving groove, and connecting receiving groove leading to the exterior. The two opposing metal components comprise first and second heat dissipation parts, and a connecting part. The first heat dissipation part is formed on an exterior surface of the holder, the connecting part is received in the connecting receiving groove, and the second heat dissipation part is formed on an inner wall of the electric component receiving groove.