Reusable Mold for Optical Element Fabrication
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Solution Overview
Problem
Current methods for manufacturing optical elements for Lidar systems are inefficient and costly, as they often require multiple molds and extensive processing steps, limiting the scalability and cost-effectiveness of producing high-quality light-shaping components.
Innovation Solution
A method involving a reusable mold with microstructures is used to apply and cure a polymer with an inorganic substrate, forming an optical element with microstructures that shape and direct light, allowing for repeated use of the mold and reducing manufacturing time and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional microfabrication processes are used to manufacture optical elements, then manufacturing precision can be achieved, but productivity is low and manufacturing cost is high
Solution Approach 1:
The patent uses a reusable mold that copies the desired microstructure pattern onto the optical element substrate. The mold contains negative impressions of the required microstructures, and through replication processes, multiple identical optical elements can be produced with consistent precision, eliminating the need for repeated mask alignment and etching steps for each element.
Solution Approach 2:
The mold is prepared in advance with the precise microstructure patterns already formed. This preliminary creation of the patterning tool allows subsequent optical elements to be manufactured without repeating the complex mask-making and alignment processes, significantly improving productivity while maintaining the precision established during mold fabrication.
2Manufacturing precision
If multiple molds and extensive processing steps are used, then manufacturing precision can be maintained, but device complexity increases and productivity decreases
Solution Approach 1:
The patent combines multiple manufacturing operations into a single integrated process using the reusable mold. The mold simultaneously defines multiple microstructure patterns and can produce multiple optical elements in one production cycle, reducing the number of separate processing steps and tools required while maintaining manufacturing precision.
3Manufacturing precision
If traditional manufacturing methods are used, then optical element quality can be achieved, but loss of time and increased manufacturing cost occur
Solution Approach 1:
The reusable mold enables continuous production of optical elements without interruption for mask realignment or process reconfiguration. Once the mold is fabricated, multiple optical elements can be produced in sequence with minimal setup time between them, maintaining high manufacturing precision while significantly reducing the total time required for production.
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 the efficient and cost-effective production of optical elements with precise microstructures, enhancing the performance and scalability of Lidar systems by reducing the time and financial burdens associated with traditional manufacturing methods.
Implementation Method 1
a polymer is applied to a mold having microstructures with the polymer flowing into the microstructures when applied to the mold
Implementation Method 2
the polymer is cured to fix the polymer to the inorganic substrate to form the optical element
Data Source
AI summary
A method includes applying a polymer to a mold, the mold having microstructures with the polymer flowing into the microstructures when applied to the mold. The method includes pressing an inorganic substrate onto the polymer. The method includes curing the polymer to fix the polymer to the inorganic substrate to form an optical element from the polymer and the inorganic substrate, the optical element having microstructures formed by the microstructures in the mold. The method includes releasing the optical element from the mold.