Using Optical Metrology for Large Optics in Telescopes
Sponsored by 4D TechnologyJan 7 2021
The quantification of large optics demands metrology systems that operate in the context of turbulence, vibration and additional challenges.
Figure 1. Measurement of large optics, such as this 8-meter primary mirror for the Large Binocular Telescope Observatory, requires metrology systems that can function despite vibration, turbulence and other challenges. (Courtesy R. Bertram and LBTO). Image Credit: 4D Technology
Introduction
The demand for meter-scale optical components has quickly grown in recent years, driven by an increase in satellite-based and terrestrial astronomy, and security and defense applications.
Laser interferometry is utilized across the manufacturing of large optics to validate adherence to stringent design requirements. ‘Dynamic interferometry’ has more recently been utilized for the vibration-resistant quantification of large optics.