Abstract: A display may include a waveguide, a prism that directs a pupil of light into the waveguide, and a partial reflector between the prism and the waveguide. The partial reflector may reflect a second portion of the pupil incident from within the waveguide but not a first portion of the pupil incident from within the waveguide. This may couple some of the second portion of the pupil back into the waveguide that would otherwise be lost through the prism after a first reflection off the waveguide surface opposite the prism. The partial reflector may sacrifice luminance of the light to maximize the pupil size that can be uniformly coupled into the waveguide for propagation to the eye box while minimizing the thickness of the waveguide.

Abstract: A display may use a waveguide to provide image light to an eye box. An emitter may emit infrared light collimated at different angles relative to a collimated axis and divergent along an orthogonal axis. The waveguide may propagate the infrared light and may include overlapping one-dimensional diffractive gratings with parallel periodic structures. Each grating may diffract, towards the eye box, a respective portion of the infrared light from a respective incident angle onto a respective output angle relative to the collimated axis. A camera may capture glints of the infrared light as reflected off a user's eye at the eye box for performing gaze tracking. The emitter and the gratings may effectively form a one-dimensional line of infrared emitters overlapping the eye box while allowing the optical emitter to remain invisible to a user.

Abstract: Optical sensing apparatus includes a transmitter, which is configured to emit FM coherent optical radiation toward a target. A receiver alongside the transmitter includes an array of optical detectors. An objective optic focuses optical radiation that is reflected from the target onto the receiver. A transparent slab over the transmitter and the receiver has a first face facing the substrate and an opposing second face, which includes a first diffractive structure intercepting the transmit axis and configured to deflect a part of the FM coherent optical radiation to form a local beam propagating diagonally within the transparent slab and reflecting from the second face toward the receive axis. A second diffractive structure on the second face intercepts the receive axis and projects the reflected local beam onto the array of detectors, whereby the local beam mixes at the array with the optical radiation reflected from the target.

Abstract: A display may use a waveguide to provide image light to an eye box. An emitter may emit infrared light collimated at different angles relative to a collimated axis and divergent along an orthogonal axis. The waveguide may propagate the infrared light and may include overlapping one-dimensional diffractive gratings with parallel periodic structures. Each grating may diffract, towards the eye box, a respective portion of the infrared light from a respective incident angle onto a respective output angle relative to the collimated axis. A camera may capture glints of the infrared light as reflected off a user's eye at the eye box for performing gaze tracking. The emitter and the gratings may effectively form a one-dimensional line of infrared emitters overlapping the eye box while allowing the optical emitter to remain invisible to a user.

Abstract: An in-vitro diagnostic device including a pipetting unit and a pipetting method, which allow for a more reproducible and more precise pipetting of liquids, when piercing through a lid of a closed liquid container is required. The pipetting unit is controlled to repeat penetration of the lid of the closed liquid container if the pressure difference between the interior of the liquid container and the surrounding is outside an allowable predefined pressure range.

Abstract: A display may include an optical emitter that emits infrared light, a first coupler that couples the infrared light into a waveguide, and a second optical coupler that couples the infrared light out of the waveguide and towards the eye box. The infrared light may reflect off an eye as reflected light. The second optical coupler may couple the reflected light into the waveguide and the first optical coupler may couple the reflected light out of the waveguide and towards a camera for performing gaze tracking operations based on the sensor data. The display may sequentially illuminate different regions of the eye with the infrared light at different times using a scanning mirror, an array of light sources, or a wavelength-adjustable light source and gratings. This may minimize infrared light scattering, which minimizes background generation and maximizes signal-to-noise ratio for gaze tracking operations.

Abstract: A control device (3b) for a roll stand (1). During rolling of a metal strip (2) in the roll stand (1), the device receives measurement data (M) for a lateral position (y) of the metal strip (2) on the inlet side and/or outlet side of the roll stand (1). Taking into account parameters (P) of the stand regulator (3a) on the basis of the deviation in the lateral position (y) from a target position (y*), a stand regulator (3a) of the control device (3b) determines a tilt value (?s) for the roll stand (1) and controls the roll stand (1) accordingly. The control device (3b) determines at least one variable (V1, V2, Q1, Q2) from which it is derived, for both strip edges (7, 8) of the metal strip (2), whether the metal strip (2) forms an undulation (9) in the region of the particular strip edge (7, 8).

Abstract: A control device (3b) for a roll stand (1). During rolling of a metal strip (2) in the roll stand (1), the device receives measurement data (M) for a lateral position (y) of the metal strip (2) on the inlet side and/or outlet side of the roll stand (1). Taking into account parameters (P) of the stand regulator (3a) on the basis of the deviation in the lateral position (y) from a target position (y*), a stand regulator (3a) of the control device (3b) determines a tilt value (?s) for the roll stand (1) and controls the roll stand (1) accordingly. The control device (3b) determines at least one variable (V1, V2, Q1, Q2) from which it is derived, for both strip edges (7, 8) of the metal strip (2), whether the metal strip (2) forms an undulation (9) in the region of the particular strip edge (7, 8).

Abstract: An in-vitro diagnostic device including a pipetting unit and a pipetting method, which allow for a more reproducible and more precise pipetting of liquids, when piercing through a lid of a closed liquid container is required. The pipetting unit is controlled to repeat penetration of the lid of the closed liquid container if the pressure difference between the interior of the liquid container and the surrounding is outside an allowable predefined pressure range.

Abstract: A contact switch including a rail having slot with a first straight section and a second curved section, a toggle unit inside a housing, the toggle unit including an extension unit that slidably engages the slot and at least one contact, a contact unit in the housing including at least one contact, where the toggle unit moves in the housing such that the contacts on the toggle unit engage at least one contact on the stationary unit in the first straight section and the contacts disengage in the second curved section.

Abstract: A poison-resistant catalytic converter includes a washcoat having a support material comprised of titania and/or silica and a plurality of platinum group metal particles disposed in the support material. The washcoat is disposed on a substrate having a plurality of cells that define respective apertures. The catalytic converter is resistant to poisoning from sulfur and phosphorous compounds while operating at low temperatures. Applications include spark ignited internal combustion engines in combined heat and power systems, vehicles, combustion turbines, boilers and other applications for utilities, industry and vehicle emissions control.

Abstract: A method of reversible spatial mode selection and conversion between waveguides and free space is presented using a multiplexed volume Bragg grating (MVBG). The MVBG has an inherent angular selectivity, providing different losses for different transverse modes and converting a higher order mode in waveguide to a single fundamental mode in free space. Using the device in a resonator allows for a pure higher order mode to be guided and amplified in the gain medium, to increase the mode area, to extract accumulated excitation more efficiently, and, therefore, to increase gain of the amplifier. In the same resonator, the device is able to convert the higher order mode to a high brightness Gaussian beam in free space or to a fundamental mode in a waveguide.

Abstract: A poison-resistant catalytic converter includes a washcoat having a support material comprised of titania and/or silica and a plurality of platinum group metal particles disposed in the support material. The washcoat is disposed on a substrate having a plurality of cells that define respective apertures. The catalytic converter is resistant to poisoning from sulfur and phosphorous compounds while operating at low temperatures. Applications include spark ignited internal combustion engines in combined heat and power systems, vehicles, combustion turbines, boilers and other applications for utilities, industry and vehicle emissions control.

Abstract: A method of gravimetric volume determination is described in which a load cell can be calibrated either outside of an analytic analyzer for gravimetric calibration of the analyzer, or in a fully automated manner inside the analyzer.

Abstract: A device for the gravimetric volume determination of liquid volumes. The device comprises a housing (11) having the shape and dimensions of a standard rack used in a clinical diagnostic analyzer system for holding sample or reagent containers, and the following components contained in housing (11): a load cell (12) for gravimetric volume determination, a weighing container (13) for receiving a liquid to be weighed with said load cell (12), a windbreak (14) which shields said weighing container (13) from air flow, an evaporation trap (15) which prevents evaporation of liquid loaded into said weighing container (13), a temperature sensor (21), an air-pressure sensor (31) and a humidity sensor (41) for sensing temperature, air pressure and humidity respectively at predetermined points within said housing (11), and an electronic processing unit for processing electrical output signals delivered by said load cell (12) and by said sensors (21, 31, 41).

Abstract: A method of gravimetric volume determination is described in which a load cell can be calibrated either outside of an analytic analyzer for gravimetric calibration of said analyzer, or in a fully automated manner inside said analyzer.

Abstract: A device for the gravimetric volume determination of liquid volumes. The device comprises a housing (11) having the shape and dimensions of a standard rack used in a clinical diagnostic analyzer system for holding sample or reagent containers, and the following components contained in housing (11): a load cell (12) for gravimetric volume determination, a weighing container (13) for receiving a liquid to be weighed with said load cell (12), a windbreak (14) which shields said weighing container (13) from air flow, an evaporation trap (15) which prevents evaporation of liquid loaded into said weighing container (13), a temperature sensor (21), an air-pressure sensor (31) and a humidity sensor (41) for sensing temperature, air pressure and humidity respectively at predetermined points within said housing (11), and an electronic processing unit for processing electrical output signals delivered by said load cell (12) and by said sensors (21, 31, 41).