Ppg Industries Ohio, Inc.

Transitions Optical, Inc.

Kevin W Seybert

Robert W Walters

Robert H Tang

Forrest R Blackburn

Anil Kumar

Peter C Foller

Eric M King

John Charny

William P Blackburn

Jeanine A Conklin

Nancyanne Gruchacz

Michael B Levesque

Jonathan Bork

Andrew J Lamb

Michael A Steimle

Stefan C Dehaseth

The present invention is directed towards a display element comprising a photochromic-dichroic compound and a dichroic compound, the display element having a first absorption state and a second absorption state and being operable for switching from the first absorption state to the second absorption state in response to actinic radiation and to revert back to the first absorption state in response to actinic radiation and/or thermal energy, wherein the first absorption state has a transmittance percentage of 50% to 80%, and the second absorption state has a transmittance percentage of 10% to 50%. The invention is further directed to display devices comprising the display element, and methods of making the display element.

Display devices including photochromic-dichroic compounds and dichroic compounds

A method of forming an optical element which includes an electrochromic apodized aperture having variable light transmittance through a clear aperture area in response to an applied electrical current is disclosed. The apodized aperture includes a body including an area defining the clear aperture area wherein a fluid containment area substantially overlapping the clear aperture area, and includes at least one fill passage extending from the fluid containment area to at least one fill port outside of the clear aperture area; an electrochromic fluid within the fluid containment area substantially overlapping the clear aperture area and having variable light transmittance in response to an applied electrical current; a cover attached with the electrochromic fluid between the cover and body; electrical contacts electrically coupled to the electrochromic fluid for supplying electrical current thereto; and at least one passage seal in each said fill passage positioned outside of the clear aperture area.

Method of making an optical element having an electrochromic apodized aperture

An optical mechanism for a camera having a camera aperture includes an indexing stage movable between at least two distinct positions. At least a first fixed diameter apodized aperture is mounted on the stage and configured to be aligned with the camera aperture in one of the distinct positions of the indexing stage, and wherein the first fixed diameter apodized aperture is not aligned with the camera aperture in the other of the distinct positions of the indexing stage. The stage can include multiple fixed diameter apodized apertures of distinct effective diameters each of which can be selectively aligned with the camera aperture. The mechanism includes an actuator for moving the stage between each of said distinct positions. Methods for mass producing the fixed diameter apodized aperture are disclosed using dye diffusion into optical elements via various methods, and various casting and molding formation techniques.

Optical mechanism with indexing stage with at least one fixed diameter apodized aperture and method of making same

Provided is an optical element with an electrochromic apodized aperture having variable light transmittance in response to the amplitude of an applied voltage. The apodized aperture includes (i) a first substrate having a planar inner surface and an outer surface, (ii) a second substrate having an outer surface and a non-planar inner surface opposing and spaced from the planar inner surface of the first substrate, wherein each of the planar inner surface of the first substrate and the non-planar inner surface of the second substrate has an at least partial layer of transparent conductive material thereover; and (iii) an electrochromic medium disposed between the planar inner surface of the first substrate and the non-planar inner surface of the second substrate.

Optical element having an apodized aperture

The present invention relates to optical elements, such as ophthalmic elements, including a substrate, a compatiblizing coating that optionally includes a dendritic polymer on at least a portion of the surface of the substrate and a functional organic coating, such as, but not limited to, an alignment coating, a photochromic coating, or an aligned liquid crystal coating, in contact with at least a portion of the compatiblizing coating opposite the substrate. The present invention also relates to compatiblizing coating compositions of dendritic polymers that may be used to form compatiblizing coatings on the surface of an optical element, and methods of making optical elements using the compatiblizing coatings.

Optical elements comprising compatiblizing coatings and methods of making the same

Describes a photochromic plastic article, e.g., an ophthalmic photochromic article, such as a lens, in which the article includes (1) a polymeric substrate, such as a thermoset or thermoplastic substrate, (2) a photochromic polymeric coating appended to at least one surface of the substrate, the photochromic polymeric coating containing a photochromic amount of at least one organic photochromic material, e.g., spirooxazine, naphthopyran and/or fulgide, and (3) a radiation-cured, acrylate-based film coherently appended to the photochromic coating, the acrylate-based film being (a) resistant to removal by aqueous solutions of inorganic caustic, e.g., potassium hydroxide, (b) compatible with organo silane-containing abrasion-resistant coating, and (c) harder than said photochromic coating. Describes also the aforedescribed photochromic article having an abrasion-resistant coating affixed to the radiation-cured acrylate-based film, e.g., an abrasion-resistant coating comprising an organo silane; and a photochromic article having an antireflective coating affixed to the abrasion-resistant coating.

Photochromic optical article

Growing community of inventors

Pittsburgh, PA, United States of America

Kevin W Seybert