4 results about "Focal zone" patented technology

The invention relates to a lighting device (1) for a motor vehicle, the lighting device comprising: - a light source (2); - an array of microlenses (3); and - a collector (4) configured to project an image of the light source onto an entrance face (31) of the array of microlenses, the collector comprising: - an elliptical first reflecting surface (41), the first reflecting surface comprising a first focal zone (Z1) and a second focal zone (Z2); and - a parabolic second reflecting surface (42), the second reflecting surface comprising a single focal zone (ZC), the light source being positioned at the first focal zone of the first reflecting surface, the single focal zone of the second reflecting surface being positioned at the second focal zone of the first reflecting surface.

This paper describes a double-sided aspherical diffractive multifocal lens and a method for manufacturing and designing such a lens in the field of ophthalmology. The lens includes optics comprising an aspherical front surface and an aspherical rear surface. Multiple concentric diffractive multifocal regions are designed on one of the two surfaces. The other surface may include a toric surface component. Compared to a single-sided aspherical lens, the double-sided aspherical surface design improves the modulation transfer function (MTF) of the lens-eye combination by reducing aberrations and enhancing visual contrast. The surface with multiple concentric diffractive multifocal regions produces near-focal, intermediate-focal, and far-focal points. The phase order of the diffractive annular lens region is shaped into a sinusoidal distribution.

This invention relates to an X-ray rotating anode, an X-ray tube, and an X-ray radiator. The X-ray rotating anode according to this invention comprises: - a carrier made of molybdenum and / or a molybdenum alloy; - a first focal zone formed on the carrier; - a second focal zone formed on the carrier; - wherein the first focal zone and / or the second focal zone comprises tungsten and / or rhenium, characterized in that the first focal zone and / or the second focal zone are formed on the carrier by means of a VPS coating method, and the first focal zone and the second focal zone are spaced apart from each other by an intermediate segment in the carrier between the first focal zone and the second focal zone.

The invention relates to a method of manufacturing at least one nozzle assembly for atomising a fluid. The method comprises a) providing the at least one nozzle assembly pre-arranged in a wafer; and b) separating the at least one nozzle assembly from remaining wafer material. According to the invention, step b) comprises locally weakening the wafer between the at least one nozzle assembly and the remaining wafer material at at least two focal zones in the depth direction by the focusing of a laser beam. The invention also relates to a composite structure for forming such nozzle assemblies, the composite structure comprising at least two weakened zones in the depth direction. Finally, a nozzle assembly manufactured with the described method is claimed.