Patent ID: 7927705
Filing Date: 2011-04-19
Classification: B32B,C03C,C04B

Abstract:
1. A composite comprising Aluminum oxynitride, i.e., AlON, and a germanate glass bonded together having transmission in the mid-infrared wavelength region wherein a thickness of said AlON is in a range of 1-5 mm and a thickness of said germinate glass is in a range of 0.1-5 mm, wherein said AlON comprises an AlON coefficient of thermal expansion and said germanate glass comprises a germanate glass coefficient of expansion such that the AlON coefficient of thermal expansion of AlON is within 1×10 −6 /K of said germanate glass coefficient of thermal expansion, wherein said composite has transmission in excess of 50% in the 0.4-5 μm wavelength region.