A terminal and a method for detecting luminance of ambient light, where the terminal includes a processor, an ambient light sensor, and a screen. The ambient light sensor and the screen are both coupled to the processor. A light-sensitive element of the ambient light sensor faces the screen and is located on a lower surface of the screen. After the screen is lit up, the processor adjusts first luminance of the screen to a value below a first threshold within a visual persistence time of human eyes. The ambient light sensor detects luminance of first ambient light of the terminal within the visual persistence time of human eyes. The terminal may eliminate non-ambient light that enters the ambient light sensor such that the ambient light sensor may detect luminance of relatively real ambient light.

A superconducting detection device for detecting a single microwave photon, including: a quantum system with two energy levels of which the ground state and an excited state are controllable and detectable, the quantum system being designed to allow modulable three-wave interaction; a buffer resonator arranged to receive an incident single microwave photon; a highly dissipative auxiliary resonator arranged to discharge a photon; and a reading device arranged to detect the state of the two-level quantum system; the buffer resonator and the auxiliary resonator are coupled to the quantum system; and the excited state of the quantum system and the photon of the auxiliary resonator are created in response to the reception of the incident photon in the buffer resonator and to the application of parametric pumping to the device. A method for detecting a single microwave photon implemented by a device according to the invention.

A beacon device for control by a beacon controller external to the beacon device. The beacon device includes a beacon emitter configured to emit beacon signals, a microcontroller coupled to control the beacon emitter, and a communication module coupled to the microcontroller and configured to transfer signals between the beacon device and the beacon controller.

The invention provides an illuminance measuring system, which comprises an illuminance measuring instrument which comprises a first communication unit and is moved by a moving vehicle, a position measuring means which comprises a second communication unit and measures a three-dimensional position of the illuminance measuring instrument and a data collector which comprises a third communication unit and a storage unit for storing positional information data of a predetermined measuring point, wherein the data collector moves the moving vehicle to the measuring point based on a position of the illuminance measuring instrument and the positional information data, an illuminance is measured and a position of the illuminance measuring instrument is measured, and wherein the data collector obtains an illuminance measurement result from the illuminance measuring instrument, obtains a measuring position from the position measuring means, and collects the illuminance measurement result and the measuring position in association with each other.

A semiconductor device that utilizes intraband photon absorption in quantum dots to provide a capacitive photodetector. The presence of the quantum dots creates confined energy states within the photodetector device. Electrons are trapped in these confined energy states. When the photodetector is illuminated by light having an appropriate photon energy, the stored electrons are released to the conduction band, causing a change in the capacitance of the photodetector. By measuring this change in capacitance, light incident on the photodetector can be detected and quantified.

A beacon device for control by a beacon controller external to the beacon device. The beacon device includes a beacon emitter configured to emit beacon signals, a microcontroller coupled to control the beacon emitter, and a communication module coupled to the microcontroller and configured to transfer signals between the beacon device and the beacon controller.

A focusing state measuring apparatus for measuring a focusing state of a working apparatus with respect to a target object so as to perform work includes: a base plate installed in the working apparatus performing work on the target object and spaced apart from the target object; a first line beam generation unit provided on one side of the base plate and configured to irradiate a first line beam toward the target object; and a second line beam generation unit provided on one side of the base plate so as to be spaced apart from the first line beam generation unit in a first direction and configured to irradiate a second line beam toward the target object. The focusing state of the working apparatus with respect to the target object is determined according to states of the first line beam and the second line beam.

Light quantity information of an imaging optical system is acquired according to a focus detection position in an imaging screen. Conversion is performed from the light quantity information and a first aperture value of the imaging optical system, so that the first aperture value is converted into a second aperture value according to the focus detection position. A conversion coefficient is set according to the second aperture value and an exit pupil distance. A correction value to correct output signals from an imaging unit is obtained according to the second aperture value and an exit pupil distance.

A direct-conversion counting x-ray detector includes an analog front end. The analog front end is one-stage. The one stage includes a preamplifier and a pulse shaping unit.

Method for operating an interior lighting device (1, 1, 1) for a motor vehicle (8), comprising a lighting device (L, L) and a sensor device (S, S), which senses a position of an operator control object (6) for the lighting device (L, L) in its sensing area, wherein the lighting device (L, L) is controlled on the basis of sensor data from the sensor device (S, S), wherein the lighting device (L, L) has multiple actuatable lighting units (L1-L3, L1-L7) that each have an associated local section (O1-O3) defined in the sensing area, wherein when an operator control object (6) is detected in a local section (O1-O3), the associated lighting unit (L1-L3, L1-L7) is activated and activated lighting units (L1-L3, L1-L7) not associated with the local section (O1-O3) are deactivated.