From Event: SPIE Optical Engineering + Applications, 2017
The material characteristics of various optical materials that are known to possess a low thermal expansion property were studied for mechanically and thermally ultra-stable optical applications. In this comparative study on material selection, the key mechanical and thermal properties of four potential low thermal expansion ceramics and three conventional low thermal expansion glass were evaluated under exactly the same testing configurations. This paper describes the results of basic material testing and outlines a comparison of material properties between the potential ceramics and conventional glass. The material testing results showed that the elastic modulus and thermal conductivity of cordierite ceramics were one-and-a-half or more times higher than those of conventional low thermal expansion glass, while ensuring the thermal expansion coefficient roughly matching that of compared glass materials. It was therefore revealed that the cordierite ceramics had most favorable physical properties and could be advantageous alternative materials to the conventional low thermal expansion glass for ultra-lightweight and thermally-stable optical applications.
Tomohiro Kamiya and Tadahito Mizutani, "Comparison of material properties between ultra low thermal expansion ceramics and conventional low thermal expansion glass," Proc. SPIE 10372, Material Technologies and Applications to Optics, Structures, Components, and Sub-Systems III, 1037208 (Presented at SPIE Optical Engineering + Applications: August 07, 2017; Published: 5 September 2017); https://doi.org/10.1117/12.2273463.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the conference proceedings. They include the speaker's narration along with a video recording of the presentation slides and animations. Many conference presentations also include full-text papers. Search and browse our growing collection of more than 12,000 conference presentations, including many plenary and keynote presentations.