Length Standards Group
Length Standards are foundation of industries and sciences. We at Length Standards Section devote ourselves to various tasks in order to establish metrological standards and calibration system in the area of length (gauge blocks, line scales, EDM, laser interferometer, , step height, and refractive index) and deviation (flatness and sphericity) metrology. We construct efficient hierarchical traceability system in cooperation with calibration laboratories. At the same time, we conduct research and development activities regarding advanced length measurement science and technology.
What's New
- Released on Oct. 25, 2024
- A paper on alignment error analysis on spherical Fizeau interferometer and uncertainty evaluation of sphericity calibration system, authored by Dr. Kawashima, has been published online. Anyone can read or download the paper for free until December 13, 2024 from the link below, without signing in or registering.
- Released on Oct. 23, 2024
- A review article on free-form surface shape measurement technology, authored by Dr. Kawashima was published in "Journal of the Society of Instrument and Control Engineers."
- Released on Oct. 3, 2024
- The "meter" was featured in the "Hajimari Kou" (Thoughts on the Beginning) column of the Yomiuri Shimbun evening edition on Wednesday, October 2, 2024. Dr. Hirai cooperated with the interview.
- Released on Sep. 4, 2024
- We will be holding a lab tour of the optical tunnel at the AIST Open House to be held on Saturday, October 5, 2024. For details, please see the AIST Open House 2024 page (in Japanese). (The optical tunnel lab tour is Lab Tour No. 07.)(Finished.)
- Released on Aug. 30, 2024
- A joint meeting and laboratory tour of the Length Club and CMM Users Club will be held at the AIST Tsukuba Center on Thursday, September 26, 2024. Associate Professor Michihata of the University of Tokyo will give a lecture on the latest technology in precision length measurement, and we plan to present four recent topics at AIST and visit four laboratories. Please see the Length Club page (in Japanese) for details.(Finished.)
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Update List
- Mar. 18, 2024
- Inquiry page of Inquiry · Access Guide is updated.
(The phone number and fax number of our research group have been deleted because these will be discontinued.) - Mar. 18, 2024
- Update Dr. Hirai's page.
- Oct. 05, 2023
- Japanese page of Inquiry · Access Guide is updated.
(The address in Japanese has slightly changed due to reorganization. The address in English has not changed.) - Apr. 03, 2023
- Update Members page.
(Dr. Kondo has returned from his secondment. Dr. Masuda has joined.) - Dec. 02, 2022
- Update Dr. Hirai's page.
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