Custom Freeform Optical Elements via Web-Based Parameterized Manufacturing
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Solution Overview
Problem
The manufacture of custom freeform optical elements is hindered by high engineering costs, unpredictable pricing, and lengthy lead times due to the need for significant engineering input and iterative design cycles, which makes the production of prototype parts prohibitively expensive for both vendors and customers.
Innovation Solution
A web-based process that provides optical design guidelines, checks designs for manufacturability, and automatically adjusts designs to meet manufacturing limitations, allowing customers to input and order custom optical elements directly, reducing the need for human intervention and enabling predictable pricing and lead times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a customer specifies a custom freeform optical design, then the optical element can be manufactured to exact specifications, but engineering time and costs increase significantly
Solution Approach 1:
The patent pre-establishes manufacturing constraints and design guidelines before the customer specifies their optical design. By having the manufacturing system ready with predefined capabilities and limitations, the vendor can quickly assess customer requirements without undergoing lengthy feasibility studies, thereby reducing engineering time while maintaining manufacturing precision
Solution Approach 2:
The patent implements an iterative feedback process where the vendor assesses customer specifications against manufacturing capabilities, communicates constraints back to the customer, and refines the design together. This structured feedback loop enables precise manufacturing while systematically reducing engineering time by avoiding repeated assessment cycles
2Reliability
If the vendor assesses each customer requirement individually, then manufacturing feasibility can be determined, but pricing becomes unpredictable and lead times extend
Solution Approach 1:
The patent creates a universal assessment framework that evaluates all customer requirements against a common set of manufacturing constraints and capabilities. This standardized approach allows the same feasibility assessment process to be applied to any custom optical design, making pricing and lead time prediction reliable and consistent across different customer orders without requiring complex individual evaluations
3Manufacturing precision
If iterative design cycles are used to achieve manufacturable designs, then design quality improves, but production costs and lead times increase
Solution Approach 1:
The patent performs preliminary assessment of design manufacturability before full production begins. By evaluating feasibility, identifying constraints, and adjusting designs early in the process rather than during iterative production cycles, the system maintains high design quality while significantly accelerating production speed and reducing lead times
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 reduces vendor and customer costs, simplifies the design process, and allows for the production of complex freeform optics at a low, fixed price, increasing market accessibility and customer confidence in ordering custom parts.
Implementation Method 1
a laser is translated over a fused silica substrate to ablate portions of the substrate in a shot-by-shot raster regime
Implementation Method 2
by melting the surface of the silica in zones greater than the raster pitch, the residual pattern of the raster is removed and a smooth, polished surface is achieved
Data Source
AI summary
A process for the manufacture of custom freeform optical elements utilising parameterised modelling. A system for the automatic manufacture of a custom optical element is also described with the manufacturing being by laser micro-machining. The process and system allow customers to specify and order via a web interface and so reduce engineering time, overhead and cost.