If you are a space telescope manufacturer dealing with the extreme cost and difficulty of launching heavy optics—this project developed a mirror sandwich that reduces weight and cost by more than one order of magnitude. This enables the creation of next-generation space telescopes and 50-100 meter-class ground telescopes.
Ultra-Lightweight Self-Correcting Mirrors for Telescopes and Solar Energy Concentrators
Imagine a mirror that can change its shape in real-time to stay perfectly focused, like a digital screen but for light. Instead of using heavy, thick glass that weighs tons, it uses a thin glass sandwich with a special 3D-printed 'muscle' layer. This allows the mirror to fix its own bends caused by wind or gravity without needing massive support structures.
What needed solving
Current high-performance mirrors are too heavy (0.5 tons/m2) and expensive, requiring massive structures to prevent deformation from wind and gravity.
What was built
A method to create 'Live-Mirrors' using a sandwich of fire-polished glass and 3D-printed Electro-active polymers for real-time shape correction.
Who needs this
Who can put this to work
If you are a solar thermal plant developer dealing with high installation costs for precision mirrors—this project developed a low-cost, 3D-printed additive manufacturing process for aspheric surfaces. This provides a cheaper alternative for the next generation of solar energy concentrators.
If you are an infrastructure provider dealing with signal loss in long-range optical antennas—this project developed self-correcting mirrors that maintain a 'live-perfect' shape. This ensures high-quality optical surfaces for antennas used in optical communications.
Quick answers
How does this impact the cost of mirror production?
Based on available project data, the technology aims to reduce the cost of mirrors by more than one order of magnitude compared to current high-end options.
Can this be scaled to very large sizes?
Yes, the project specifically targets the development of 50-100 meter-class telescopes and several-meter-scale aspherical surfaces.
What is the IP or licensing status of the 3D printing process?
Based on available project data, the project uses additive manufacturing 3D printers to deposit Electro-active polymers, but specific licensing terms are not listed.
How does the mirror handle environmental interference?
The mirrors use a multi-sensing control system and Electro-active polymers to provide real-time push-pull action to counteract wind and gravity changes.
What is the expected timeline for deployment?
The project period runs from 2023-02-01 to 2028-01-31, suggesting the technology is currently in the development and demonstration phase.
Who built it
The consortium consists of 7 partners across 4 countries (DE, ES, FR, IT). It is heavily research-driven with 4 research organizations and 1 university, but maintains a 29% industry ratio with 2 SMEs. This balance suggests a transition from fundamental science (CNRS coordination) toward industrial application.
Contact CNRS in France for technical specifications on EAP integration.
Talk to the team behind this work.
Contact us to identify potential licensing partners for additive optical manufacturing.