Paper 13094-53
Paper 13094-53
Measurement data and evaluation result Of CLEARCERAM-Z Hs 1.5M diameter mirror blanks for the TMT M1 segment blanks
19 June 2024 • 16:00 - 16:20 Japan Standard Time | Room G403/404, North - 4F
Abstract
Ohara was selected to be the supplier of segment blanks for the primary mirror on an extremely large telescope project, notably the Thirty Meter Telescope (TMT). Ohara has been producing and supplying near zero expansion mirror blanks for this project and more than 350 pieces of 1.5 m diameter blanks of CLEARCERAM®-Z HS, of the total quantity required of 574 blanks,were completed.
In this paper we will report the measurement data and evaluation results on the 1.5 m diameter CLEARCERAM®-Z HS blanks targeting the TMT Specifications for M1 Primary Mirror Segment Banks, which includes data on the CTE, CTE uniformity, residual stressand internal quality.
Presenter
Omata Yoshihiko
Ohara Inc. (Japan)
With over 15 years of experience in the optics field at Ohara Inc., the speaker has been a key contributor to technological innovation. Specializing in materials for the critical exposure process in semiconductor manufacturing and key devices in optical communications, he has consistently proposed unique products, contributing significantly to advancements in technology.
His expertise also extends to the space sector, where he has played a crucial role in the manufacturing of artificial satellites and large astronomical telescopes. Currently, he leads the supply of ultra-low expansion glass-ceramic materials for the primary mirror of the Thirty Meter Telescope's optical system.
A dedicated advocate for contributing to technological advancement through materials, the speaker's unwavering commitment aligns with the principles of Ohara Inc. Join us in welcoming this accomplished speaker, a veteran in the optics industry, at the upcoming optical conference event!