Abstract: An image displaying device includes a micro-LED-array having several LEDs, a controller electrically connected to the micro-LED-array for driving the LEDs such that they emit light, and a lens-array having several lenses. Each lens is assigned to one of the LEDs. Each lens is arranged in the light path of the light emitted by the corresponding LED such that the light emitted by the LEDs passes through the corresponding lens and is projected onto a screen. The lens-array is configured such that, when seen from the screen, a virtual image of the micro-LED-array is formed behind the micro-LED-array. The lens-array is a meta-lens-array and the lenses are meta-lenses.

Abstract: A portable system may measure and monitor physiological parameters of a human being by analysis of a body fluid. The system may include a consumable part in the form of a measuring patch to be adhered to the skin. The measuring patch may be equipped with a sensor system configured to provide measured values of physiological parameters by body fluid analysis. The system may further include a body-worn readout unit suitable for continuous use, which is configured to read out and monitor the measured values supplied by the measuring patch. The readout unit is further configured to be worn over the measuring patch adhered to the skin and to read out and monitor the measured values in this position.

Abstract: An image displaying device includes a micro-LED-array having several LEDs, a controller electrically connected to the micro-LED-array for driving the LEDs such that they emit light, and a lens-array having several lenses. Each lens is assigned to one of the LEDs. Each lens is arranged in the light path of the light emitted by the corresponding LED such that the light emitted by the LEDs passes through the corresponding lens and is projected onto a screen. The lens-array is configured such that, when seen from the screen, a virtual image of the micro-LED-array is formed behind the micro-LED-array.

Abstract: A headlight includes a first LED cluster having a plurality of first LEDs arranged next to one another on a common first substrate, a second LED cluster having a plurality of second LEDs arranged next to one another on a common second substrate, and an output coupling optical unit having a plurality of optical elements, of which an optical element which comes first in a beam path of the LED clusters has, a light incidence surface which is common to the LED clusters. The LED clusters have a lateral distance from one another which is at least as great as an extent of the LED clusters in the same direction. The common light incidence surface has a locally delimited light incidence region directly in front of an associated LED cluster. The locally delimited light incidence region deviates from the basic shape of the light incidence surface.

Abstract: A TOF camera for determining a distance to an object comprising: a radiation source configured to emit electromagnetic radiation toward the object, radiation-sensitive sensor elements configured and arranged to detect the electromagnetic radiation reflected/scattered by the object, an optical element arranged to influence the emitted electromagnetic radiation in the radiation path of the reflected/scattered electromagnetic radiation between the object and the sensor elements, a computing unit electrically connected to the radiation source and sensor elements configured to determine a time duration required by the electromagnetic radiation from the radiation source to the object; from the object to the sensor elements; and to determine the distance between the TOF camera and the object depending on the time duration determined.

Abstract: An optoelectronic sensor may include a radiation source designed to emit electromagnetic radiation, a receiver designed to receive a reflection of the radiation, an optical waveguide optically coupled to the radiation source, and/or to the receiver so that an optical coupling region is formed to couple the radiation out of the sensor and to inject the reflection into the sensor to determine properties of a sample to be determined. The sensor may be configured to rest against a sample.

Abstract: A headlight includes a first LED cluster having a plurality of first LEDs arranged next to one another on a common first substrate, a second LED cluster having a plurality of second LEDs arranged next to one another on a common second substrate, and an output coupling optical unit having a plurality of optical elements, of which an optical element which comes first in a beam path of the LED clusters has, a light incidence surface which is common to the LED clusters. The LED clusters have a lateral distance from one another which is at least as great as an extent of the LED clusters in the same direction. The common light incidence surface has a locally delimited light incidence region directly in front of an associated LED cluster. The locally delimited light incidence region deviates from the basic shape of the light incidence surface.

Abstract: A TOF camera for determining a distance to an object comprising: a radiation source configured to emit electromagnetic radiation toward the object, radiation-sensitive sensor elements configured and arranged to detect the electromagnetic radiation reflected/scattered by the object, an optical element arranged to influence the emitted electromagnetic radiation in the radiation path of the reflected/scattered electromagnetic radiation between the object and the sensor elements, a computing unit electrically connected to the radiation source and sensor elements configured to determine a time duration required by the electromagnetic radiation from the radiation source to the object; from the object to the sensor elements; and to determine the distance between the TOF camera and the object depending on the time duration determined.

Abstract: A plant for melting glass or rock including: a first melting tank including a batch material inlet, a heater that makes it possible to heat the batch materials until a liquid glass is obtained; a liquid glass outlet; and downstream of the melting tank, a second heating tank including metallic walls that are not covered with refractory insulating materials and that include a system of internal ducts allowing circulation of a coolant, a plurality of injectors of submerged burners, and a liquid glass outlet, in a form of an overflow, which limits a height of the glass bath in the heating tank to a value between 50 mm and 300 mm. A process for melting glass or rock uses such a melting plant.

Abstract: A batch charger for charging batch materials into a glass melting furnace at a level located below the level of the molten glass, including: a body including a barrel and a mechanical system for conveying batch materials, the mechanical system being housed in the barrel; and a head removably fastened to an end of the barrel, and including a slide gate damper, and a tubular connecting part fastened to the slide gate damper and configured to be at least partially inserted into a charging orifice provided in a wall of a tank of the furnace, the slide gate damper and the connecting part including a system of internal ducts that can be connected to a source of coolant. A melting installation and a process can use such a batch charger.

Abstract: An apparatus for analyzing at least one measured optical profile of a machined workpiece includes an analysis module configured to: receive nominal optical profile data representing a desired profile of a workpiece as designed in a current design step; receive a plurality of measured optical profile data corresponding to a plurality of machined workpieces; for each measured optical profile data, determine a difference between the measured optical profile data and the nominal optical profile data; remove non-systematic machining errors from the determined difference, by determining an average of the plurality of determined differences; and output the determined average, corresponding to errors on the profile due to machining which are systematic machining errors, to a design module, in order to enable the design module to take into account the systematic machining errors in a further design step of the desired workpiece.

Abstract: A plant for melting glass or rock including: a first melting tank including a batch material inlet, a heater that makes it possible to heat the batch materials until a liquid glass is obtained; a liquid glass outlet; and downstream of the melting tank, a second heating tank including metallic walls that are not covered with refractory insulating materials and that include a system of internal ducts allowing circulation of a coolant, a plurality of injectors of submerged burners, and a liquid glass outlet, in a form of an overflow, which limits a height of the glass bath in the heating tank to a value between 50 mm and 300 mm. A process for melting glass or rock uses such a melting plant.

Abstract: A batch charger for charging batch materials into a glass melting furnace at a level located below the level of the molten glass, including: a body including a barrel and a mechanical system for conveying batch materials, the mechanical system being housed in the barrel; and a head removably fastened to an end of the barrel, and including a slide gate damper, and a tubular connecting part fastened to the slide gate damper and configured to be at least partially inserted into a charging orifice provided in a wall of a tank of the furnace, the slide gate damper and the connecting part including a system of internal ducts that can be connected to a source of coolant. A melting installation and a process can use such a batch charger.

Abstract: Metrological apparatus and a confocal sensor for use in such apparatus are described. The confocal sensor (1) has an optical pinhole (11) adapted for letting through a light beam (2). An optical assembly of the sensor has a first lens (12) having a refractive profile (121) and a diffractive profile (122) and a second lens (13) having at least a refractive profile (131). The refractive profile (121) of the first lens (12) and the refractive profile (131) of the second lens (13) focus the light beam (2) into a focused beam (21). The diffractive profile (122) of the first lens (12) creates longitudinal chromatic aberration so that the focused beam (21) has a focal zone with a longitudinal depth (R).