Corning Glass Works

Donald M Trotter

Nicholas Francis Borrelli

Paul A Tick

Roger J Araujo

Arthur J Whitman

This invention relates to a method for preparing a lens or a lens array and apparatus for carrying out the method. The method comprises directing, in line of sight in a vacuum, the vapor of a substance, which is solid and transparent at ambient temperature, from a source of that vapor through a hole in a mask to form a deposit on a substrate. The mask is so positioned between the vapor source and the substrate that obscuration by the solid portions of the mask around the hole causes the deposit to assume a curved surface and function as a lens.

Lenses and lens arrays

There is disclosed a metal-glass composite comprising a photosensitive glass body with opacifying crystallites developed in at least a portion of the body, and a metal deposit on and/or in that portion of the glass surface coincident with the crystallized portion of the glass body, the metal deposit exhibiting useful electrical conductivity. There is further disclosed a method of producing such composite by forming crystallites in at least a portion of a glass body, subjecting at least the surface coincident therewith to a cationic ion exchange to introduce metal ions and thereafter firing the ion-exchanged glass in a hydrogen atmosphere to cause the metal ions to be reduced and subsequently migrate surfaceward and form a metal deposit.

Metal patterns on photosensitive glasses

There is disclosed an improved optical device of the type disclosed in application Ser. No. 520,456 and embodying an array of lenses integral with and raised above a crystalline matrix. The improvement comprises an ion-exchanged surface on the lenses wherein the lithium ion from the lens glass is exchanged with a larger monovalent ion, preferably sodium or potassium from a bath, and the contents of such alkali metal ions in the lens are defined by both radial and axial concentration gradients. The device may be heated above the glass strain point to relieve stress and enhance lens power, either simultaneously with or subsequent to the ion exchange.

Optical device and method

There is disclosed a composite photochromic glass article composed of a glass core and a thin surface layer substantially encasing that core, the core preferably containing a copper-cadmium halide photochromic crystal system and the substantially encasing glass layer preferably containing a copper-cadmium-silver halide photochromic crystal system. The article may be made by fusion laminating two separately formed glasses, or by introducing silver into a surface layer on a glass article by ion exchange.

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Corning, NY, United States of America

Donald M Trotter