3D Printing Light Control Module Polarizer Transmittance
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Solution Overview
Problem
The transmittance of light control modules in three-dimensional printing devices decreases with increasing resolution, leading to a risk of underexposure during the curing process of light-curable materials.
Innovation Solution
A light control module comprising a first substrate, a second substrate, a medium layer, a polarizing element with an adhesive layer, and an electrical connection element is used, where the polarizing element is disposed on the outer surface of the first substrate, and the electrical connection element is connected to the adhesive layer, enhancing transmittance and reducing the risk of underexposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the resolution of the light control module is increased to improve 3D printing precision, then the manufacturing precision is improved, but the transmittance of the light control module decreases
Solution Approach 1:
The patent introduces a polarizing element as an intermediary component between the light source and the liquid crystal layer. This polarizing element mediates the light transmission process by controlling the polarization state of light, enabling the liquid crystal molecules to more effectively modulate light intensity. This intermediary mechanism allows for improved light control efficiency without sacrificing transmittance, thereby resolving the contradiction between high resolution and light transmittance.
Solution Approach 2:
The patent utilizes the principle of parameter changes by controlling the orientation and alignment of liquid crystal molecules through applied voltages. By changing the electrical parameters (voltage) applied to different regions of the light control module, the optical properties (transmittance and light modulation) can be dynamically adjusted. This allows the system to maintain high resolution while optimizing light transmittance through electrical parameter control rather than structural changes.
2Manufacturing precision
If the resolution of the light control module is increased, then the manufacturing precision is improved, but the risk of underexposure increases
Solution Approach 1:
The polarizing element serves as a mediator that enhances the efficiency of light modulation by the liquid crystal layer. By optimizing the polarization state of incident light, the system achieves more effective light control with higher transmittance, ensuring sufficient exposure energy reaches the photopolymer even at high resolutions. This reduces the risk of underexposure while maintaining manufacturing precision.
Solution Approach 2:
The patent implements a feedback mechanism where the light control module dynamically adjusts the orientation of liquid crystal molecules based on the required light intensity for each pixel region. This feedback control ensures that each pixel transmits or blocks light according to the precise curing requirements, maintaining both high resolution and reliable curing by preventing underexposure through real-time optical parameter adjustment.
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 improves the transmittance of the light control module, reducing the risk of underexposure and achieving better precision in 3D printing by allowing for more effective curing of light-curable materials.
Implementation Method 1
the medium layer comprises a liquid crystal medium, and the liquid crystal molecules in the liquid crystal medium are oriented in different directions according to different voltages applied to different regions of the pixel array
Implementation Method 2
The polarizing element is disposed on the outer surface of the first substrate and includes an adhesive layer
Implementation Method 3
curing a first part of the light-curable material corresponding to the first light-transmitting region into a first cured layer by the light beam
Data Source
AI summary
A light control module including a first substrate, a second substrate, a medium layer, a polarizing element and an electrical connection element is provided. The first substrate has an outer surface and an inner surface opposite to the outer surface. The second substrate is opposite to the first substrate. The medium layer is disposed between the inner surface of the first substrate and the second substrate. The polarizing element is disposed on the outer surface of the first substrate and includes an adhesive layer. The electrical connection element is at least partially disposed on the outer surface of the first substrate and connected to the adhesive layer. A three-dimensional printing device and an operation method thereof are also provided.