Abstract: The invention provides a method for designing progressive surfaces and lenses produced using image blur to construct a merit function. The shape of a lens surface, or surfaces, is arbitrarily defined and optimized to minimize the image blur based merit function.

Abstract: The present invention provides single vision and multifocal lenses, as well as methods for their production, having a transverse chromatic aberration enabling provision of a lens the performance of which is equivalent to a refractive lens with a higher Abbe number.

Abstract: The invention provides a method for designing progressive surfaces and lenses produced using image blur to construct a merit function. The shape of a lens surface, or surfaces, is arbitrarily defined and optimized to minimize the image blur based merit function.

Abstract: The present invention provides multifocal lenses containing at least four zones of different refractive power. The zones are positioned such that the wearer is able to use the inferior-most portion of the lens to more clearly, as compared to conventional multifocal lenses, view objects at distances more than 45 cm from the eye.

Abstract: The present invention provides single vision and multifocal lenses, as well as methods for their production, having a transverse chromatic aberration enabling provision of a lens the performance of which is equivalent to a refractive lens with a higher Abbe number.

Abstract: An enclosed chamber is used in a system for screening of a liquid specimen through binding assays. The enclosed chamber includes an inlet, an outlet, and a plurality of discrete reactant containing wells communicated by a common reagent flow path between the inlet and the outlet. A transparent member or coverslip defines on an inside thereof the plurality of wells. Each well has a bottom for receiving an allergent/antigen/reactant, which emits light upon reacting. The coverslip can optionally define at least one lens at each well. A bottom encloses the plurality of wells and defines between the inlet and the outlet a common reagent flow path between the inlet and the outlet. This bottom defines for each of the plurality of wells a flow-diverting member. An opaque partition is disclosed for surrounding the individual lenses and generally isolating the light path from each well.

Abstract: A method of correcting image shift and magnification differences of multiple images which are used to create a single measurement of an imaging light and color measurement device. The multiple images are taken from a test object utilizing the imaging light and color measurement device through different optical paths. Software is utilized to shift the pixels vertically and/or horizontally with a shift fraction determined based on the magnitude of the image shift in a direction opposing to the shift. Software is uses to further move the pixels inwardly or outwardly with a pixel value determined on the magnification differential of images.

Abstract: A dual-Fresnel field lens liquid crystal display projection system which includes first and second flat Fresnel lenses having their faceted surfaces facing one another and positioned adjacent to one another along the optical axis of the system between a liquid crystal display light modulator and the entrance aperture to a projection lens assembly to form a field lens assembly for the projection system.

Abstract: A scanner configured to provide a two-dimensional scan of a radiation beam moving along the path, including two deflectors and a scan lens located downstream in the path of the beam from the deflectors and separated from the farthest deflector by air equivalent distance at least equal to the focal length of the scan lens.