Abstract:
Page 9 A coupler for an acoustic device includes a main opening for inserting the acoustic device or an adapter for the acoustic device. The coupler also includes a main channel connected at one end to the main opening. The coupler further includes one or more leakage paths for allowing sound to escape the main channel when in use. The coupler additionally includes one or more acoustic resonators connected to the main channel. The one or more acoustic resonators includes a first acoustic resonator configured to have a fundamental resonance frequency in the range of 500 Hz to 1 kHz and a second acoustic resonator configured to have a fundamental resonance frequency in the range of 3.85 kHz to 5 kHz.
Abstract:
A device comprises a data terminal, a clock terminal and a digital circuitry. The data terminal is configured to be connected to a serial data line. The clock terminal is configured to be connected to a serial clock line for receiving a clock signal. The digital circuitry is coupled to the data terminal and to the clock terminal. The digital circuitry is configured to operate using a time base signal provided via a further clock terminal to the device or using an internal clock signal that is generated by an internal oscillator of the device. Furthermore, a method for operating a device is described.
Abstract:
A photodiode device includes a semiconductor substrate with a main surface, the semiconductor substrate being of a first type of electric conductivity. At least one doped well of a second type of electric conductivity is arranged at the main surface of the substrate, the second type of electric conductivity being opposite to the first type of electric conductivity. The at least one doped well and the substrate are electrically contactable. A cover layer is arranged on the main surface of the substrate. The cover layer is at least one of an epi-layer of the first type of electric conductivity and a dielectric surface passivation layer comprising a plurality of space charges, or a combination thereof.
Abstract:
An optical system for use in a headlamp of a motor vehicle includes condenser optics formed by a condenser lens matrix and being provided to focus incoming light beams. It further includes at least one reflective shield being provided to reflect at least a subset of the focused light beams and to create a cut-off line of outgoing light beams. It further includes imaging optics formed by an imaging lens matrix, which is provided to project the focused light beams and the reflected light beams in front of the headlamp, such that the reflected light beams contribute to an intensity hotspot on one side of the cut-off line.
Abstract:
A sensing system comprising a light filtering apparatus configured to pass a first wavelength of light corresponding to an emission spectrum characteristic of Mercury. The sensing system comprises a sensor configured to receive light passed by the light filtering apparatus and produce a sensor response that is indicative of the light passed by the light filtering apparatus. The sensing system comprises a processor configured to use the sensor response to distinguish between light emitted by a fluorescent light source and light emitted by a light emitting diode.
Abstract:
An optical detector (1) on an application specific integrated circuit (ASIC) comprises at least one photodiode (5) for receiving incident light and configured to provide at least one diode signal, a modulator (2) configured to provide an AC drive signal and to provide a reference signal associated with the AC drive signal; and a lock-in amplifier (6) configured to receive said at least one diode signal from said at least one photodiode (5) and to receive the reference signal from the modulator (2), and to determine at least one of a phase and an amplitude of said at least one diode signal using the reference signal.
Abstract:
An optical module (100) for reading a test region of an assay. The optical module comprises: a first light source (101) for illuminating the test region of the assay; an optical detector (103), comprising an optical input for receiving light emitted from the test region and an electrical output; a substrate (104) for mounting the first light source (101) and the optical detector (103); and a housing (105) comprising: a first opening (106) for providing a first optical path from the first light source (101) to the test region (103); wherein the housing (105) and the substrate (104) enclose and positionally align the first source (101) and the optical detector (103) relative to the first opening (106). The housing (105) may comprise one or more legs (108), such as a flexible hook portion which secures the housing (105) to the substrate (104) with a snap-fit engagement, extending from a first and/or second outer surface of the housing (105) in a vertical direction. Beneficially, the snap-fit engagement provided by the flexible hook portion allows the housing to be aligned and secured without the need to use glue or for example a screw and thread that can be difficult to control and/or risks misalignment of the housing.
Abstract:
A light emitting unit driving circuit may include: an operating voltage supplying unit configured to supply a voltage input for the driving circuit; a driving unit coupled to the operating voltage supplying unit and configured to drive the light emitting unit to make the light emitting unit turn on or turn off; and a feedback control unit coupled between the driving unit and the light emitting unit, and configured to form a feedback loop together with the driving circuit and the light emitting unit to stabilize an operating current of the light emitting unit.
Abstract:
An LED lighting device may include an LED support, which is populated with at least one LED on a front side thereof and a rear side of which is fastened to a rest. The front side of the LED support may be overarched by an electrically insulating, light-permeable and diffusely scattering LED cover, and the LED cover may be overarched by a protection cover resting on the support.
Abstract:
In various embodiments, a two-switch flyback power supply may include a transformer having a primary winding and a secondary winding to feed a load; a pair of electronic switches alternatively switchable on and off to connect the primary winding of said transformer to an input line to feed said primary winding of said transformer, wherein at least one of said electronic switches is an electronic switch having a control electrode floating with respect to ground; a capacitive voltage divider arranged between said input line and the ground of the device, with the dividing point of said capacitive voltage divider connected to an intermediate point of said primary winding of said transformer; and an auxiliary secondary winding in said transformer, said auxiliary secondary winding feeding the control electrode of said at least one of said electronic switches.