[Application Example] Contribution to the Assembly and Calibration of the James Webb Space Telescope
Assembly and calibration using PI positioning technology: James Webb Space Telescope
The James Webb Space Telescope (JWST) utilized PI's positioning technology for assembly and calibration. The primary mirror consists of 18 hexagonal mirror segments, and achieving optical integration of each segment requires micron to sub-micron level six degrees of freedom positioning accuracy and high reproducibility. In the assembly process, a robotic arm equipped with PI's hexapod enabled fine movement and attitude control of the mirror segments, allowing for high-precision placement and fixation in conjunction with laser measurements. During thermal deformation evaluation under low temperature and high vacuum conditions, a custom H-850 hexapod with an interferometer supported precise measurement of mirror behavior and high-precision alignment of the interferometer during cooling from room temperature to cryogenic temperatures. Furthermore, in the calibration tests for NIRSpec, a PI linear axis designed using Dispal material provided stable operation and high-precision movement in a 77 K environment.
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Vacuum environment compatibility, space, research and development.
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The German headquarters, with over 50 years of experience and 30 years as a Japanese corporation, presents new solutions from PI, a company specializing in precision positioning products. We offer the world's number one piezo stages and actuators, as well as hexapod positioning products. Additionally, we are enhancing our lineup of linear motor-driven products and high-precision air bearing stages. In positioning, attention to the foundation is also crucial, and we provide granite bases, enabling us to propose composite systems as well. Please take a look at our diverse lineup that provides cutting-edge technology to production sites around the world, advanced equipment, and various fields of cutting-edge research.