Bausch-lomb Incorporated

David Lewison

Raymond H Puffer, Jr

Marc Bergendahl

William J Appleton

Ted Foos

Sunil Singh

An optical device inspection system and method employing a narrow aperture on a magnifying objective lens in order to reduce the circle of confusion and increase the depth of field. The smaller aperture resulting in an increase in depth of field allows for simultaneous focus for all portions of objects being inspected. An arc lamp with an elliptical reflector in combination with a condenser lens focuses a more intense beam of light through the objective lens, thereby providing sufficient brightness without sacrificing any depth of field.

Depth of field enhancement for optical comparator

A method and apparatus for an inspection cell that allows contact lenses to be presented in a known orientation to an operator or vision system for inspection. The cell can be tipped to allow the inspected lens to be placed into a known pick-cup location upon passing inspection, or if the lens does not pass inspection, it can be discarded. The placement or discarding of the lens can be readily automated by selecting the rate at which the cell is tipped.

Ophthalmic lens transportation and inspection cell

An assembly for orienting and fixturing an array of contact lenses in a lens-fixturing tray to enable automated picking of the lenses includes an array of tubes to which a first support tray having an array of lens receptacles each having a respective contact lens therein is removably mounted. A lens-fixturing tray having an array of lens receptacles is removably mounted to the other end of the tubes and the assembly is rotated and submerged in a fluid bath whereby the lenses release from the first support tray and float downwardly through a respective tube coming to rest in a centered, concave side-up position in a respective receptacle of the lens-fixturing tray.

Growing community of inventors

Larchmont, NY, United States of America

David Lewison