Opto-ceramics made from In2O3 or oxides Y, Lu, Sc, Yb, In, Gd, and La, optical elements made therefrom, and mapping optics including the optical elements

US7700510B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Guenther Kron · Mainz, DE
• Ulrich Peuchert · Bodenheim, DE
• Joseph Hayden · Clarks Summit, US
• Carsten Weinhold · Nieder-Olm, DE
• Yvonne Menke · Mainz, DE
• Yoshio Okano · Seto, JP

Key dates

• Filing date: Jun 12, 2007
• Grant date: Apr 20, 2010
• Expiry date: Jan 22, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/9653
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The opto-ceramics and optical elements of the present invention are transmissive to visible light and/or to infrared radiation. They consist of a crystal combination in which individual crystallites have a cubic structure of the type Y2O3 and are made from In2O3 or a mixture of oxides of the type X2O3 in which X=Y, Lu, Sc, Yb, In, Gd, or La. Also mixtures of X2O3 with oxides having different stoichiometries, such as zirconium and hafnium oxide, are possible, as long as the cubic structure of the opto-ceramic is maintained. The optical elements prepared from the opto-ceramics are particularly suitable for mapping optics, such as objectives having reduced chromatic aberrations, in particular with approximately apochromatic mapping behavior. The optical elements of the present invention may be used in lens systems in combination with lenses of glass, but also with other ceramic lenses.