Resonance Light Valve Structure for Fast High-Fluence Beam Scanning
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Solution Overview
Problem
Current light valve technologies are limited in switching pixel speeds due to their reliance on photoconductors and liquid crystal materials, which leads to defects and inefficiencies when handling high fluence beams, and lack the ability for complex scanning functionalities.
Innovation Solution
The use of resonance-based light valves with structures such as lambda magic mirrors, phased array lambda magic mirrors, and quantum dot materials that couple well with activating fields, allowing for reduced material volume, lower defect rates, and enhanced scanning capabilities through simple amplitude, complex single beam, or full holographic beam scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If photoconductors and liquid crystal materials are used in light valve systems, then the system can achieve basic light modulation functionality, but the switching pixel speeds are limited and defect rates increase when handling high fluence beams
Solution Approach 1:
The patent changes the fundamental operating parameters of the light valve system by transitioning from photoconductor/liquid crystal materials to resonance-based control structures. This involves changing the wavelength response characteristics and material properties to operate in resonance with the activating field, enabling faster switching speeds and reduced defect rates when handling high fluence beams
Solution Approach 2:
The patent employs composite material structures including lambda magic mirrors with multiple layers, phased array structures, and quantum dot materials. These composite structures combine different materials with complementary properties to achieve both high switching speed and high reliability when handling high fluence beams, while coupling efficiently with the activating field
2Adaptability or versatility
If traditional light valve materials are used, then the system structure remains simple, but the material volume is insufficient for effective coupling with activating fields and scanning functionalities are limited
Solution Approach 1:
The patent segments the light valve structure into multiple functional components including lambda magic mirror layers, phased array elements, and quantum dot regions. This segmentation allows each component to be optimized for specific functions such as field coupling, resonance enhancement, and scanning control, thereby increasing overall adaptability while using reduced material volumes
Solution Approach 2:
The patent introduces dimensional complexity through phased array structures and holographic beam scanning capabilities. By adding spatial dimensionality control through phased arrays and holographic methods, the system achieves enhanced scanning functionalities without proportionally increasing material volume, as the control is achieved through phase modulation rather than material quantity
3Productivity
If resonance based control structures are used to reduce material volume and improve coupling, then switching times decrease and defect damage is reduced, but the system complexity increases
Solution Approach 1:
The patent applies resonance-based control structures that utilize optical resonance phenomena to enhance the interaction between the activating field and the light valve materials. By tuning the structural dimensions and material properties to resonate with the activating field wavelength, the system achieves enhanced coupling efficiency and faster switching times without requiring proportional increases in material volume
Solution Approach 2:
The patent uses lambda magic mirrors and phased array structures that create optical field distributions equivalent to complex material arrangements. Instead of using large volumes of complex materials, the system uses resonant structures that copy or simulate the optical effects of more complex configurations, thereby reducing material volume while maintaining or enhancing performance
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 approach enables faster switching times, reduced defect-driven damage, and the ability to perform complex scanning functions with high fluence beams, improving the efficiency and functionality of light valve systems.
Implementation Method 1
a resonance based structure responsive to a write beam... The resonator is structured so to resonant at the high fluence beam
Implementation Method 2
FIG. 1C(i) and (ii) illustrates a lambda magic mirror for a resonance based light valve... FIG. 1D illustrates graphs depicting reflection or transmission response
Implementation Method 3
FIG. 1H illustrates a quantum dot resonance based light valve... FIG. 1I illustrates a graphs depicting reflection or transmission response
Implementation Method 4
The resonator is structured so to resonant at the high fluence beam... the high fluence beam undergoes multiple reflections inside the resonator
Data Source
AI summary
An additive manufacturing system includes a high power laser to form a high fluence laser beam at a first wavelength. The systems includes a 2D patternable light valve having a resonance based structure responsive to a write beam.