Abstract: An intraocular lens includes a base refractive structure having anterior and posterior surfaces that are shaped for producing a first optical power and a diffractive structure formed in one of the surfaces of the base refractive structure including overlapping first and second diffractive patterns over a common aperture for producing second and third optical powers. The second optical power is an uneven division of the third optical power. The first and second diffractive patterns have respective step heights that are separately varied as a function of radial distance from the optical axis over the common aperture.

Abstract: An intraocular lens includes a base refractive structure having anterior and posterior surfaces that are shaped for producing a first optical power and a diffractive structure formed in one of the surfaces of the base refractive structure including overlapping first and second diffractive patterns over a common aperture for producing second and third optical powers. The second optical power is an uneven division of the third optical power. The first and second diffractive patterns have respective step heights that are separately varied as a function of radial distance from the optical axis over the common aperture.

Abstract: A seal head assembly includes a plurality of heat seal plates defining a corresponding plurality of heating areas, each heat seal plate including a heating element to independently control the temperature of the corresponding heating area.

Abstract: Cell counters and methods of their use are disclosed herein. The cell counters include a sample mounting system that includes a base, which includes a mounted lower sample surface and a cover having a mounted upper sample surface; a bright-field light source incorporated in the cover; an objective lens mounted below the sample mounting system; optionally, a fluorescence excitation source in optical communication with the sample mounting system; and an imaging system in optical communication with the bright-field light source and the objective lens. The mounted sample surfaces are configured for repeated use, such that disposable sample cartridges are not needed.

Abstract: Cell counters and methods of their use are disclosed herein. The cell counters comprise a sample mounting system that includes a base comprising a mounted lower sample surface and a cover comprising a mounted upper sample surface; a bright-field light source incorporated in the cover; an objective lens mounted below the sample mounting system; optionally, a fluorescence excitation source in optical communication with the sample mounting system; and an imaging system in optical communication with the bright-field light source and the objective lens. The mounted sample surfaces are configured for repeated use, such that disposable sample cartridges are not needed.

Abstract: An intraocular lens includes a base refractive structure having anterior and posterior surfaces that are shaped for producing a first optical power and a diffractive structure formed in one of the surfaces of the base refractive structure including overlapping first and second diffractive patterns over a common aperture for producing second and third optical powers. The second optical power is an uneven division of the third optical power. The first and second diffractive patterns have respective step heights that are separately varied as a function of radial distance from the optical axis over the common aperture.

Abstract: A seal head assembly includes a plurality of heat seal plates defining a corresponding plurality of heating areas, each heat seal plate including a heating element to independently control the temperature of the corresponding heating area.

Abstract: A vacuum sealing system includes a vacuum pump, a lower tool to hold one or more trays carrying product, an upper tool to seal a plastic film onto the one or more trays, the upper tool including at least one seal plate with a seal plate cavity and a vacuum clamp, the system also including a controller to control the vacuum pump, the lower tool, and the upper tool.

Abstract: A sealing system configured to receive a container and seal the container with a lidding. The system comprises an in-feeder that is configured to receive a plurality of containers and transport a batch of containers that are selected from the plurality of containers; and a modular seal assembly that is configured to seal the batch of containers with a lidding, wherein the modular seal assembly comprises: a docking station that is configured to hold a plurality of sealing modules; and a sealing module that is configured to be removable from the docking station without removing any other one of the plurality of sealing modules.