Abstract: According to one embodiment, a biometric authentication device includes a sensor and an illumination device. The sensor includes a first base material, a plurality of photoelectric conversion elements and a first control unit. The illumination device includes a second base material, a plurality of light emitting elements and a second control unit. Upon lighting the light emitting element at a predetermined position in the groups of the light emitting elements by the second control unit, the first control unit controls the operation of the photoelectric conversion elements so as to acquire a signal from the photoelectric conversion elements at predetermined positions of the groups of the photoelectric conversion elements.

Abstract: A spot on a layer of a 2D semiconductor material deposited on a substrate is irradiated so as to generate excitons, so that photons are emitted from the layer. The photoluminescence spectrum is recorded for different values of the charge carrier concentration in the layer. The modulation of the charge carrier concentration may be realized by modulating the output power of the light source used to irradiate the sample. The relation is recorded between the ratio of the photoluminescence intensity of a first peak in the spectrum related to radiative recombination from indirect bandgaps to the intensity of a second peak in the spectrum related to radiative recombination from direct bandgaps, and the carrier concentration. This relation is fitted to a model of the ratio that takes into account multiple recombination mechanisms, radiative and non-radiative. From this process, the trap density within the bandgap is derived.

Abstract: A mobile communications device that does not have a physical opening on the screen for audio is operable to transmit a signal to which a photoacoustic effect can be employed by interaction with water vapor in an ear of a user so as to generate audio in the ear or the immediate vicinity of the user's ear. Related methods, apparatuses, systems, techniques and articles are also described.

Abstract: Provided is an organic light-emitting display apparatus in which a dead space may be reduced. The organic light-emitting display apparatus includes: a substrate including a first display area, a second display area disposed outside of the first display area, and a third display area disposed outside of the second display area; a first thin-film transistor disposed in the first display area on the substrate; a second thin-film transistor and a third thin-film transistor each arranged in the second display area on the substrate; a first pixel electrode arranged in the first display area on the substrate and electrically connected to the first thin-film transistor; a second pixel electrode arranged in the second display area on the substrate and electrically connected to the second thin-film transistor; and a third pixel electrode arranged in the third display area on the substrate and electrically connected to the third thin-film transistor.

Abstract: A directional free-space optical communication system includes a source device including a laser diode and an endpoint device including a photodiode. The endpoint device also includes an optical structure, such as an optical adapter, that increases both angular and spatial offset tolerance between the two source device and the endpoint device.

Abstract: A system and method for analyzing quality criteria of a radiation spot are provided herein. The system may include: at least one controllable electromagnetic radiation source configured to generate and transmit a radiation beam onto an object, resulting in a radiation spot on said object; at least one radiation sensor configured to sense and obtain radiation reflections coming back from said object, wherein the radiation beam is generated in a way that reflections from different ranges are distinguishable of each other; and an analyzer configured to analyze said radiation reflections, and determine a remedy to the radiation beam, in a case that said radiation spot does not meet predefined spot validity criteria. The method may implement the aforementioned logic in a different architecture.

Abstract: A sensor device for detecting an object with the aid of light of at least one wavelength, including a transmitting unit for emitting light using at least one light source and a receiving unit for receiving light, the light emitted by the transmitting unit in the plane perpendicular to the transmit path having the form of a circumferential surface, which includes an inner area to which light is not applied, an optical element being situated in a shared part of the transmit and receive paths, in such a way that the cross-section surface of the optical element in the plane perpendicular to the transmit path essentially completely overlaps with its cross-section surface the inner area to which light is not applied.

Abstract: An apparatus includes a probe and a light source configured to output light. The apparatus includes a light focusing assembly comprising an image space lens, an object space lens and a focus changing assembly between the image space lens and the object space lens. The focus changing assembly is configured to focus the light to a plurality of external focal planes to illuminate a patient's teeth, wherein at least a portion of the focus changing assembly is located at a back focal length of the object space lens. The apparatus includes a detector to measure characteristics of incident light returning from an illuminated patient's teeth and a processor coupled to the detector and configured to generate data representative of a topography of the patient's teeth based on the one or more measured characteristics of the incident light.

Abstract: An optical signal receiver includes a multimode waveguide for receiving a complex modulated optical signal, an optical resonator that receives the complex modulated optical signal from the multimode waveguide and converts the complex modulated optical signal to an intensity modulated signal, and a detector that is configured to convert the intensity modulated signal into an electrical signal, the electrical signal having an amplitude indicative of an intensity of the intensity modulated signal from the optical resonator, and that provides a detected signal.

Abstract: The present application relates to a light pulse signal processing system. A to-be-measured signal light source generates a to-be-measured signal light pulse, and the to-be-measured signal light pulse is transmitted to a cylindrical lens. The to-be-measured signal light pulse is converted into a to-be-measured signal light pulse having a spatial angle chirp by the cylindrical lens, and is outputted and is incident into a pair of long mirrors at different angles. The to-be-measured signal light pulse incident at different incident angles is delayed by the pair of long mirrors. A cluster of to-be-measured signal light pulses with a corresponding repetition rate is outputted to a beam combining mirror, and is combined with a cluster of reference light pulses by the beam combining mirror. A light signal analysis device analyzes the combined cluster of light pulses.

Abstract: Techniques and devices are disclosed for forming wettable flanks on no-leads semiconductor packages. A lead frame may include a plurality of lead sets, each lead set including leads having a die surface and a plating surface, vias between adjacent lead sets in a first direction, and an integrated circuit die arranged on the die surface of each die lead. A mold chase may be applied to the plating surfaces, the mold chase including mold chase extensions extending into the vias between each adjacent lead set in the first direction, each mold chase extension having a peak surface. The lead frame assembly may be partially embedded in a mold encapsulation such that portions of the mold encapsulation contact the peak surfaces. The mold chase may be removed to expose the vias containing sidewalls and the plating surfaces and the sidewalls may be plated with an electrical plating.

Abstract: A pixel array includes a plurality of pixel groups. Each of the plurality of pixel groups includes a plurality of subpixels arranged in an M×N matrix, where M is a natural number equal to or greater than 2, and N is a natural number equal to or greater than 2, as well as a plurality of color pixels configured to sense pieces of light having different wavelength bands. Each of the plurality of color pixels includes a same number of phase detection pixels.

Abstract: Provided are a display panel and a method of fabricating the same. The display panel includes a display region including a first pixel region where a plurality of pixels are disposed, a sensing region including a second pixel region where a plurality of pixel groups are disposed, and a light transmitting part disposed between the pixel groups. At least the second pixel region includes a light shield layer, and the light shield layer includes an opening hole corresponding to the light transmitting part.

Abstract: An electronic device may have a display with an array of pixels configured to display images for a user. The electronic device may have an ambient light sensor for gathering ambient light information. Control circuitry in the electronic device may adjust the brightness level of an image being displayed by the display based on ambient light measurements from the ambient light sensor. The ambient light sensor may be formed from an ambient light sensor module that is aligned with an opening in an opaque masking layer in the display. One or more antireflection layers may be interposed between an inwardly facing surface of the display and an opposing external surface of the ambient light sensor module. The ambient light sensor module may have a light attenuator and other optical structures.

Abstract: A method for designing an imaging optical system is a point-by-point calculation method based on characteristic light rays (FLR) and characteristic data points (FDP). The basic function of the point-by-point calculation method includes the following steps: according to the given object-image relationship, based on Fermat's principle and the law of retraction and reflection, calculating the propagation path of the FLR passing through a system and the FDP on each optical surface, to obtain a surface shape equation of each optical surface by fitting; and repeating the above process, to solve the surface shape equation of each optical surface one by one, and finally complete the design and solution of the entire imaging optical system.

Abstract: A method for detecting incident laser radiation on a spacecraft, whereby incident radiation is detected separately in several discrete spectral ranges, the radiation recorded in the spectral ranges is converted into further processable electrical signals, and the signals are evaluated together. A device for detecting incident laser radiation on a spacecraft is configured to perform such a method.

Abstract: Disclosed are a photosensitive assembly, a method for manufacturing the same, and an electronic device. The photosensitive assembly includes a light-transmissive substrate, a light sensor, and a vibration member. The light sensor is disposed on a side of the light-transmissive substrate, and the vibration member is configured to drive the light-transmissive substrate to vibrate, such that a photosensitive area of the light-transmissive substrate is in an undulated shape.

Abstract: A beam steering apparatus including a first actuatable micromirror array (AMA) having a pitch, p, adapted to impart a modulation to a wavefront incident on the first AMA by a transition between a first state and a second state, wherein the first AMA has a transition time (T) between the first state and the second state, and at least one light source adapted to provide the incident wavefront having a duration, t, to the first AMA, where t?T. The AMA may be a MEMS device such as a digital micromirror array. The beam steering apparatus may constitute a portion of LIDAR system.

Abstract: Among other things, an imaging device has a photosensitive array of pixels, and a surface associated with the array is configured to receive a specimen with at least a part of the specimen at a distance from the surface equivalent to less than about half of an average width of the pixels.

Abstract: A method for detecting incident laser radiation on a spacecraft, whereby incident radiation is detected separately in several discrete spectral ranges, the radiation recorded in the spectral ranges is converted into further processable electrical signals, and the signals are evaluated together. A device for detecting incident laser radiation on a spacecraft is configured to perform such a method.

Abstract: The present disclosure describes a single aperture laser range finder (SALRF). In an implementation, the single aperture laser range finder includes a beam extender including an aperture and an input aperture lens. A matching lens collimates light emitted from an emitter element associated with a single aperture optical circulator and received by the beam extender, respectively. A single aperture optical circulator has an emitter channel associated with the emitter element and a detector channel associated with a detector element. The emitter channel and the detector channel merge together at an input/output aperture. A light gating mechanism is configured to permit received light to enter the detector channel and to prevent the received light from entering the emitter channel. The SALRF has an electronics end cap.

Abstract: According to various embodiments, a solid-state light detection and ranging (LiDAR) transmitter includes a tunable optical metasurface to selectively steer incident optical radiation long an azimuth axis. In some embodiments, different subsets of lasers in an array of lasers are activated to generate optical radiation for incidence on the metasurface at different angles of incidence on an elevation axis for unsteered deflection by the metasurface at corresponding angles of elevation. In some embodiments, a prism is positioned relative to the tunable optical metasurface to deflect the optical radiation from the optical assembly by the optical radiation source for incidence on the metasurface at an angle of incidence that is between the first steering angle and the second steering angle, such that the optical radiation incident on the metasurface and the steered output optical radiation from the metasurface spatially overlap within the prism.

Abstract: Techniques are disclosed to enable a system for wide-range scanning of objects in three-dimensions. A broad-beam, laser-based transmitter is provided that is adapted to generate a scanning signal to be transmitted in a scanning direction toward an object to be scanned, a portion of the scanning signal being reflected by the object to be scanned. Additionally, a scanning signal collection lens is provided that is adapted to receive the portion of reflected scanning signal and to direct the reflected scanning signal to a mirror array, the mirror array adapted to selectively direct a directed portion of the reflected scanning signal as well as a detector lens adapted to receive the directed scanning signal, the collection lens adapted to focus the directed scanning signal resulting in a focused directed signal and a photoelectric detector adapted to convert the focused directed scanning signal into at least one electronic representation of a two-dimensional image.

Abstract: Load-bearing apparatus/systems for location in the vicinity of energized power lines are provided. The apparatus includes a base member. The base member has an upper layer and a backing surface layer. An uppermost surface of the upper layer is adapted to support on it at least power line workers and/or related stringing equipment. At least the uppermost surface of the upper layer is adapted to be electrically conductive. Methods for forming the apparatus are also provided.

Abstract: An optical device includes: a light source that emits laser light; an optical waveguide element positioned on the optical path of the laser light; a first member positioned on the optical path, and has a bottom surface that faces the optical waveguide element, and a side surface that is rotationally symmetric about the optical path; and a control circuit. The optical waveguide element includes: a first grating that includes a plurality of portions arranged in the radial direction and having mutually different refractive indices, and that causes a portion of the laser light that is incident to be propagated in the radial direction within the optical waveguide element; and a second grating that includes a plurality of portions arranged outside the first grating, arranged in the radial direction, and having mutually different refractive indices, and that causes light to be emitted from the optical waveguide element.

Abstract: A power distribution system and method can include a controller and a set of power-using devices. Each power-using device in the set can include a sensor configured to measure a parameter and transmit a sensor signal representing the parameter to the controller, and the controller can respond to the transmitted sensor signal.

Abstract: An electronic package and a method for fabricating an electronic package are provided. An encapsulation layer encapsulates a first electronic component and a plurality of conductive pillars, and is defined with a reservation region and a removal region adjacent to the reservation region. A circuit structure is disposed on the encapsulation layer. The removal region and the circuit structure therewithin are removed for an optical communication element to protrude from a lateral surface of the encapsulation layer when the optical communication element is disposed on the circuit structure, so as to avoid a packaging material used in a subsequent process from being adhered to a protruding portion of the optical communication element.

Abstract: Certain embodiments are directed to an acoustograph or acoustic sensor configured as a thermometer or direct specific absorption rate (DSAR) sensor for the measurement of electromagnetic energy.

Abstract: An optical module includes a substrate, an optical device, and a plurality of light transmitting elements and a plurality of light receiving elements disposed between the optical device and the substrate. The optical device includes a device body, and an optical transceiver interface and a lens array that are disposed on the device body. The lens array is configured to optically couple the plurality of light transmitting elements with the optical transceiver interface, and optically couples the optical transceiver interface with the plurality of light receiving elements. An auxiliary lens is disposed on an optical coupling path between the plurality of light transmitting elements and the optical transceiver interface or between the optical transceiver interface and the plurality of light receiving elements.

Abstract: Techniques and devices are disclosed for forming wettable flanks on no-leads semiconductor packages. A lead frame may include a plurality of lead sets, each lead set including leads having a die surface and a plating surface, vias between adjacent lead sets in a first direction, and an integrated circuit die arranged on the die surface of each die lead. A mold chase may be applied to the plating surfaces, the mold chase including mold chase extensions extending into the vias between each adjacent lead set in the first direction, each mold chase extension having a peak surface. The lead frame assembly may be partially embedded in a mold encapsulation such that portions of the mold encapsulation contact the peak surfaces. The mold chase may be removed to expose the vias containing sidewalls and the plating surfaces and the sidewalls may be plated with an electrical plating.

Abstract: A hinge between a support and a movable part in an out-of-plane direction of a microelectromechanical structure includes two torsion beams, and two bending elements connecting the movable part and the support and each comprising two beams extending perpendicularly to the axis of rotation. Each beam is connected to the support by a first end and to the movable part by a second end, the first ends and the second ends of the beams being disposed with respect to one another in such a way that the orientation of the first end towards the second end of one beam is opposite to the orientation of the first end towards the second end of the other beam.

Abstract: An optical sensing module for an electronic device is provided. The electronic device includes an opaque layer and an aperture formed on the opaque layer, wherein the optical sensing module includes an optical sensor; a light guide element, disposed between the opaque layer and the optical sensor and configured to guide light to the optical sensor through the aperture; and a diffusing layer, disposed between the opaque layer and the light guide element, configured to diffuse the light to the light guide element.

Abstract: Some embodiments provide enhanced resolution imaging systems comprising: a mounting; an electro-optical image capture system; an angular jitter sensor system; an illumination source system; and an image capture control circuit is configured to: receive ling of sight displacement sensor data; obtain, during the capture frame, an angular displacement of the image capture system and monitor when the detected angular displacement of the image capture system, based on the sensor data, is beyond an angular displacement threshold envelope; and activate exposure of the image capture system to illumination, during the capture frame, when the detected angular displacement of the image capture system is within the angular displacement threshold envelope, and control a level of exposure of the image capture system to illumination, during the capture frame, when the detected angular displacement is not within the angular displacement threshold envelope.

Abstract: A method, a mobile device, and a computer program product enable capacitive proximity sensing in a mobile device. The method includes determining, by a controller of a mobile device, whether the mobile device is participating in an active phone call. In response to determining that the mobile device is participating in an active phone call, the method further includes determining if an ear speaker mode of the mobile device is enabled. In response to determining that the ear speaker mode of the mobile device is enabled, the method further includes activating a driven shield to at least partially shield a capacitance sensor from sensing object capacitance at a second side of the mobile device that is opposed to a first side with the ear speaker.

Abstract: An image forming apparatus includes a fixing portion and an optical sensor having first and second positioning holes and a connector. The fixing portion includes first and second screw holes, a through-hole, and an extension portion. If the optical sensor is placed on the fixing portion in a first orientation where the first positioning hole is aligned with the first screw hole and the second positioning hole is aligned with the second screw hole, the connector is inserted into the through-hole without interfering with the extension portion so that screws fix the optical sensor. If the optical sensor is placed on the fixing portion in a second orientation where the first positioning hole is aligned with the second screw hole and the second positioning hole is aligned with the first screw hole, the connector interferes with the extension portion so that the connector is not inserted into the through-hole.

Abstract: A curved surface constituting a convex surface or a concave surface of each of a plurality of lenses includes at least a silicon nitride layer and another silicon nitride layer. An interlayer having a composition different from a composition of the silicon nitride layer and a composition of the other silicon nitride layer is arranged between the silicon nitride layer and the other silicon nitride layer, and a thickness of the interlayer is less than a thickness of the silicon nitride layer and a thickness of the other silicon nitride layer.

Abstract: Described is an integrated vertical structure for infrared sensors, Peltier cooling, and thermoelectric generator applications consisting of a thermally insulating layer which is kept at a distance to a substrate by at least two spacers. In addition, the spacers have conductor structures which serve as thermoelectric elements. A method realizes manufacturing the integrated thermoelectric structure, a method realizes the operation of the integrated thermoelectric structure as a detector, a further method realizes the operation of the integrated thermoelectric structure as a thermoelectric generator, and a method realizes the operation of the integrated thermoelectric structure as a thermoelectric Peltier element.

Abstract: A system for monitoring a tank truck operation platform and for guiding and positioning vehicles and a method of using the same, the system includes operation platforms. Each of the operation platforms is provided with a lifting support. The operation platform is installed with an upper-position sensor, a lower-position sensor, and a stress sensor, which communicate with a central control device mounted on the operation platform. The central control device communicates with a distance meter and an in-place sensor for detecting the vehicle. The central control device may send signals to a display device, and information of platform status and vehicle position guidance are displayed on the display device to offer the driver with guidance information including whether the platform is safe and available, the moving direction of the vehicle, and position relative to the platform. Meanwhile, the central control device can receive identification information sent by the vehicle.

Abstract: An apparatus includes a support structure defining therein substantially parallel cavities extending from a first side of the support structure to a second side of the support structure. The apparatus also includes optical fiber cores each extending from the second side through a corresponding cavity and protruding axially at the first side. The axial protrusion tapers from a first diameter down to a second diameter. The apparatus additionally includes a light emitter optically connected to the optical fiber cores and configured to emit light thereinto. A cut-off size associated with the light is greater than or equal to the second diameter such that an evanescent electromagnetic wave is generated at the cut-off portion. The apparatus further includes light detectors each being optically connected at the second side to a corresponding optical fiber core and configured to measure an intensity of the light reflected from the cut-off portion.

Abstract: A directional free-space optical communication system includes a source device including a laser diode and an endpoint device including a photodiode. The endpoint device also includes an optical structure, such as an optical adapter, that increases both angular and spatial offset tolerance between the two source device and the endpoint device.

Abstract: A microscope-autofocus device for feedback-controlling a focal position of an imaging system of a microscope apparatus, wherein the imaging system includes a microscope objective, a monitoring beam source for creating a monitoring beam, a detector device for detecting a drift variation of an axial objective distance between the microscope objective and a sample by sensing the monitoring beam directed through the imaging system to the sample and reflected by the sample, and a feedback loop device for controlling the imaging system in dependency on the detected objective distance variation of the microscope objective.

Abstract: A convertible slot scanner assembly for capturing at least one object appearing in a field of view (FOV) is provided that includes an imaging assembly, a controller, an image decoder, a chassis, a first window, and a housing. The chassis is configured to accommodate the imaging assembly and includes an optical cavity, an opening, and a flange portion at least partially surrounding the opening. The first window is configured to at least partially cover the opening of the chassis. The housing includes a housing cavity that is dimensioned to at least partially accommodate the chassis. The housing is positionable in a first, horizontal configuration and a second, vertical configuration. In the horizontal configuration, the first window is in a generally horizontal orientation. In the vertical configuration, the first window is in a generally upright orientation.

Abstract: An endoscope includes: an insertion portion to be inserted into a subject; a distal end portion that is arranged on a distal end side of the insertion portion, the distal end portion including as imager and an actuator; an operating portion that is arranged on a proximal end side of the insertion portion, the operating portion including a relay substrate that is electrically connected to the imager and the actuator via a first cable; a connector substrate that is electrically connected to the relay substrate via a second cable; and a proximal end portion including a connector. The first cable includes a first actuator signal line. The second cable includes a second actuator signal line. The second actuator signal line has a larger outer diameter than an outer diameter of the first actuator signal line.

Abstract: A light emitting device according to an embodiment includes a body having a recess; a light emitting chip disposed in the recess; and a first dampproof layer sealing the light emitting chip and extended from a surface of the light emitting chip to a bottom of the recess, wherein the light emitting chip includes a wavelength range of 100 nm to 280 nm, and the first dampproof layer includes a fluororesin-based material.

Abstract: Techniques are provided to reduce the form factor of laser-based systems by multi-purposing a photodiode used to help control the output of a laser. A reflective photodiode comprises a light receiving surface and a reflective coating. The light receiving surface is configured to absorb some incident light and to convert it into electrical current. The reflective coating is disposed on the light receiving surface and is configured to reflect some of the incident light away from the light receiving surface. The reflective coating also permits some of the incoming light to pass therethrough for absorption.

Abstract: Laser-based devices utilizing temperature modulation for improved self-mix sensing. A self-mix laser unit includes: an active region having a first side and a second, opposite, side; a p-type Distributed Bragg Reflector (DBR) region, which is in direct touch with said first side of the active region; an n-type DBR region, which is in direct touch with the second side of the active region; and an n-type or p-type or other substrate. A heating unit provides modulated heating to the active region, either directly via an electrical resistor within the active region; or indirectly by passing or propagating modulated heat through one of the DBR regions or through the substrate. The modulated heating improves the laser-based self-mix signal.

Abstract: An optical imaging system including refractive optics and a blocking component. The refractive optical having an entrance aperture and configured to receive optical radiation via an operational aperture, to focus the optical radiation onto a focal plane to form a telecentric image plane co-located with the focal plane, the operational aperture being co-located with the entrance aperture, having a diameter less than half a diameter of the entrance aperture, and being offset from a primary optical axis that bisects the entrance aperture by at least a radius of the entrance aperture, and a blocking component located at the entrance aperture on an opposite side of the primary optical axis from the operational aperture. The blocking component being configured to block the optical radiation from exiting the refractive optics via a region of the entrance aperture where the blocking component is located.

Abstract: A photographing optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element with negative refractive power has a convex object-side surface and a concave image-side surface. The third lens element has refractive power. The fourth lens element has refractive power, and an object-side surface and an image-side surface thereof are aspheric. The fifth lens element with negative refractive power has a concave image-side surface, wherein an object-side surface and the image-side surface thereof are aspheric, and at least one of the object-side surface and the image-side surface thereof has at least one inflection point.

Abstract: A stocker includes a wall that separates an inside and an outside of the stocker, a storage area on an inner side of the wall and in which articles are stored, a fan on the wall to draw in outside air and introduce the outside air into the inside of the stocker, a control panel storage provided on the inner side of the wall and laterally to the storage area to store a control panel, a first thermal insulation layer on a wall side of the control panel storage, and a second thermal insulation layer on a storage area side of the control panel storage.

Abstract: A freeform surface off-axis three-mirror optical system comprises a primary mirror, a secondary mirror, a tertiary mirror, an aperture stop located on the secondary mirror, and an image surface. An incident light beam emitted from an object irradiates and is reflected on the primary mirror to form a first reflected light beam. The first reflected light beam irradiates and is reflected on the secondary mirror to form a second reflected light beam. The second reflected light beam passes through the incident light beam, and then irradiates and is reflected on the tertiary mirror to form a third reflected light beam. The third reflected light beam passes through the incident light beam and does not pass through the secondary mirror, and finally reaches the image surface for imaging. A reflective surface of each of the primary mirror, the secondary mirror, and the tertiary mirror is an xy polynomial freeform surface.