Selection of I-220-H beryllium for NIRCam optical bench

Derek J. Edinger; Alison A. Nordt

doi:10.1117/12.614571

18 August 2005 Selection of I-220H beryllium for NIRCam optical bench

Derek J. Edinger, Alison A. Nordt

Proceedings Volume 5868, Optical Materials and Structures Technologies II; 58680X (2005) https://doi.org/10.1117/12.614571
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

The Near Infrared Camera (NIRCam) for NASA's James Webb Space Telescope (JWST) is one of the four science instruments to be installed into the Integrated Science Instrument Module (ISIM) on JWST. I-220H beryllium was chosen as the optical bench material for NIRCam based on its high specific stiffness, relatively high thermal conductivity, low CTE at cryogenic temperatures, and overall thermal stability at cryogenic temperatures. Beryllium has cryogenic heritage, but development of a structural bonded joint that could survive cryogenic temperatures was required. This paper will describe the trade studies performed in which bonded, I-220H beryllium was selected.

Citation Download Citation

Derek J. Edinger and Alison A. Nordt "Selection of I-220H beryllium for NIRCam optical bench", Proc. SPIE 5868, Optical Materials and Structures Technologies II, 58680X (18 August 2005); https://doi.org/10.1117/12.614571

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