Corning Incorporated

Lawrence George Mann

Christopher Morton Lee

Yongsheng Yan

Jose Mario Quintal

Mike Xu Ouyang

Michael David Harris

Multilayer anti-reflective coatings having four or more layers are disclosed. In one aspect, the multilayer anti-reflective coating comprises a first layer having a refractive index n, where n&#x3c;1.4, and an optical thickness of (0.25&#xb1;5%) &#x3bb;nm; a second layer adjacent to the first layer, the second layer having a refractive index n, where n&#x2267;1.8, and an optical thickness of (0.5&#xb1;5%) &#x3bb;nm; a third layer adjacent to the second layer, the third layer having a refractive index n, where 1.4&#x2266;n&#x3c;1.6, and an optical thickness of (0.1&#xb1;5%) &#x3bb;nm; and a fourth layer adjacent to the third layer, the fourth layer having a refractive index n, where n&#x2267;1.8, and an optical thickness of (0.05&#xb1;10%) &#x3bb;nm; where &#x3bb;is a wavelength in the visible light range.

Anti-reflective coating for optical windows and elements

A method of chemically strengthening a glass. The method includes ion exchange of the glass in a first bath, followed by immersion in the second bath. The first bath is diluted with an effluent ion. The second bath has a smaller concentration of the effluent ion than the first bath. The method provides a compressive stress at the surface of the glass that is sufficient to arrest flaws introduced by contact forces at the surface of the glass while having sufficiently deep compressive depth-of-layer for high reliability.

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Painted Post, NY, United States of America

Lawrence George Mann