Precision Machining of Parabolic Mirror Made of Low Thermal Expansion Ceramic

Mutsumi Okada; Akihiro Takagi; Hirofumi Suzuki; Jun Sugawara

doi:10.4028/www.scientific.net/AMR.1017.467

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1017Precision Machining of Parabolic Mirror Made of...

Precision Machining of Parabolic Mirror Made of Low Thermal Expansion Ceramic

Abstract:

Needs of precision optical mirrors are increasing in the astronomical space telescope. In the space having extremely large temperature differences, the aspheric optical mirror made of low thermal expansion ceramic is very effective in reducing the focus errors due to the thermal expansion. In order to develop the mirror made of a new low thermal expansion ceramic, parabolic mirror of the ceramic is ground and polished to test. By the grinding and polishing test, changes of form deviation profiles and surface roughness profiles are evaluated and machinability of the proposed ceramic is studied.

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Periodical:

Advanced Materials Research (Volume 1017)

Pages:

467-472

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1017.467

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Online since:

September 2014

Authors:

Mutsumi Okada, Akihiro Takagi, Hirofumi Suzuki*, Jun Sugawara

Keywords:

Aspheric, Low Thermal Expansion Ceramic, Magnetic Field-Assisted, Parabolic Mirror, Precision Grinding, Surface Roughness (SR), Truing, Uniform Polishing

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* - Corresponding Author

References

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DOI: 10.1016/0141-6359(89)90029-9

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