126 results about "Emitter array" patented technology

Systems and methods for conditioning air streams are described herein. In some embodiments, a system can include an absorber and a desorber. The absorber configured to receive a supply air stream including moisture at a first moisture concentration and expose it to a liquid desiccant to remove moisture from the supply air stream and produce a conditioned air stream. The desorber configured to receive a regeneration stream at a first mass flow rate and at least a portion of the liquid desiccant from the absorber and having at least one salt at a first weight percent. The desorber includes an array of emitters configured to direct the portion of the liquid desiccant at a second mass flow rate to a desorber media to facilitate removing moisture from the portion of the liquid desiccant and produce a concentrated liquid desiccant with the at least one salt at a second weight percent.

An apparatus comprising an infrared (IR) illuminator, an interface and a processor. The IR illuminator may comprise an array of emitters divided into a plurality of segments each configured to generate an amount of an IR light. The interface may be configured to receive pixel data comprising the IR light. The processor may be configured to process the pixel data arranged as video frames, extract IR illumination data for each of a plurality of zones of the video frames, perform a comparison of the IR illumination data in each zone to an exposure threshold, and generate a control signal in response to the comparison. Each zone may correspond to a subsection of the video frames associated with a respective one of the segments. The control signal may be configured to independently adjust the amount of the IR light generated by each of the segments for each of the zones.

Techniques for selectively illuminating regions of an environment are disclosed herein. For example, an autonomous vehicle can include one or more emitter systems (e.g., a headlight(s)) comprising an array of light emitters configured to controllably emit light into an environment. In some examples, a machine learned model(s) may generate configuration signals to control the individual light emitters of an emitter system based at least in part on one or more of sensor data (e.g., lidar data, image data, etc.). In some examples, the machine learned model may generate configuration signals based at least in part on map data. Additional sensor data may be captured after the emitter system is reconfigured and used to control the autonomous vehicle.

An optoelectronic apparatus includes an array of emitters configured to emit beams of optical radiation. An optical substrate is mounted over the array. An optical metasurface is disposed on the optical substrate and configured to collimate and split each of the emitted beams into a respective group of collimated sub-beams, and to direct the collimated sub-beams toward a target to form a pattern of spots on the target.

An optoelectronic apparatus includes an array of emitters configured to emit beams of optical radiation. Refractive optics focus the emitted beams with a first optical power. An optical metasurface splits the focused beams to form a pattern of spots and applies a vergence to the spots with a second optical power so as to project the pattern of spots toward a target.

A lidar system and method. Each emitter of the emitter array emits a light beam directed toward the FOV through the scanning unit. In one embodiment, an emission light beam guided according to an alternating energy level illumination protocol enables detection under halo, in which a first light beam emitted by a first emitter and having a first energy level illuminates a first FOV region, and a second light beam emitted by a second emitter and having a second energy level illuminates a second FOV region. And a second light beam emitted by the second emitter and having a second energy level irradiates a second FOV region adjacent to the first FOV region, wherein the first energy level is lower than the second energy level. In another embodiment, an emission light beam guided according to an offset illumination protocol enables detection under halo, where a first light beam emitted by a first emitter in a first plurality of scan lines illuminates the FOV portion at a first time and a second light beam emitted by a second emitter in a second plurality of scan lines at a second time. And a second light beam emitted by the second emitter in the second plurality of scan lines illuminates the FOV portion at a second time after the first time. Each detector of the detector array detects a reflection of the emitted light beam.

A sensing system may include an illumination projector, an image sensor, and one or more controllers. The illumination projector may project a partial illumination pattern on a target object. The image sensor may sense the partial illumination pattern projected on the target object and may generate signals representative of the sensed illumination pattern. The one or more controllers may control the illumination projector and process the signals generated by the image sensor. The illumination projector may include a microlens array and an emitter array. A spatial relationship of emitters of the emitter array to microlenses of the microlens array may cause the emitter array and the microlens array to project light upon the target object in the partial illumination pattern.

The invention relates to an Optical Front-end, OFE, (400) for Optical Wireless Communication, OWC, the OFE comprising: an optical receiver with at least a photodetector (102a) and a trans-impedance amplifier, and a two-dimensional array of optical transmitters (103a) each having an individual transmitter field-of-view, and one or more drivers, the two-dimensional array arranged to create a combined transmitter field of view that is larger than 5 the individual transmitter field of view, the plurality of optical transmitters arranged such that optical axes of the plurality of optical transmitters are evenly distributed within the combined transmitter field of view.

An ion generator includes a high voltage source, a body defining a central axis, and multiple arms extending from the body. The body has a primary conductive line electrically coupled to the high voltage source, and a first insulating covering surrounding the primary conductive line. Each arm has an emitter array and a secondary conductive line. The emitter array is disposed at a distal end of the arm relative to the body. The secondary conductive line is electrically coupled to the primary conductive line at a proximal end of the arm relative to the body and extends to the emitter array. The arms are distributed about the central axis, such that the orientations of the emitter arrays and the connection of each arm to the central body are distributed helically, spirally, or symmetrically with respect to other arms, relative to the central axis.

An electronic device comprises a housing configured to contact a user's skin, an optical transmitter array, an optical receiver, a memory element and a processing element. The optical transmitter array outputs a plurality of optical signals that pass through the user's skin, each of the plurality of optical signals having one of three wavelengths. The optical receiver receives the optical signals and generates corresponding photoplethysmogram (PPG) signals. The memory element stores absorption constants for deoxyhemoglobin blood content, oxyhemoglobin blood content and glycated hemoglobin blood content, each absorption constant associated with one of the first wavelength, the second wavelength or the third wavelength. The processing element determines a glycated hemoglobin blood level for the user based on a ratio of a determined glycated hemoglobin blood content to a sum of determined deoxyhemoglobin blood content, a determined oxyhemoglobin blood content and a determined glycated hemoglobin blood content.

A system for free-space optical coupling between a two-dimensional optical transmitter array and a two-dimensional optical receiver array using planar optical elements includes a transmitter array configured to emit one or more optical beams, a first planar optical element configured to receive the optical beams from the transmitter array and generate one or more intermediate optical beams, a first spacer disposed between the optical transmitter array and the first planar optical element, a receiver array, a second planar optical element configured to receive the intermediate optical beams and generate one or more output optical beams directed to the receiver array, and a second spacer disposed between the second planar optical element and the optical receiver array. The TX and RX portions of the optical coupling system can be used in a LiDAR system as a light emitting element (beam steerer) and a detector, respectively. The planar optical element is configured to provide a wide field of view for the LiDAR.

A device comprising: an illumination device for emitting an illumination beam, the illumination device comprising: an emitter array comprising multiple light emitters; and a meta-structure or micro-prism array comprising multiple transmission areas, the meta-structure of micro-prisms being positioned to receive light emitted from the emitter array, in which light from the meta-structure of micro-prism forms the illumination beam, in which a first one of said multiple transmission areas is arranged to emit light in a different direction than a second one of said multiple transmission areas.

In some implementations, an emitter array may include a substrate, an epitaxial structure on the substrate, a plurality of bottom-emitting emitters defined in the epitaxial structure, a first electrical contact positioned at a top side of the epitaxial structure, a second electrical contact positioned at the top side of the epitaxial structure, and a metal layer disposed on a bottom side of the substrate. The metal layer may be electrically connected to the second electrical contact. The metal layer may include one or more openings for light emission of the plurality of bottom-emitting emitters.

A laser assembly (10) includes an emitter array (34) and a lens array (36). The emitter array (34) includes a first emitter (18A) that generates a first emitter beam (20A) along a first emitter axis (44A), and a second emitter (18B) that generates a second emitter beam (20B) along a second emitter axis (44B). The first emitter axis (44A) and the second emitter axis (44B) are spaced apart a first emitter separation distance (42a). The lens array (36) includes a first lens (22A) that colliminates the first emitter beam (20A), and a second lens (22B) that colliminates the second emitter beam (20B). The first lens (22A) has a first lens axis (48A) and the second lens (22B) has a second lens axis (48B). The first lens axis (48A) and the second lens axis (48B) are spaced apart a first lens separation distance (46a) that is different from the first emitter separation distance (42a).

A range sensing device includes a transmitter including an array of emitters configured to emit respective beams of coherent optical radiation and a switching circuit coupled to the emitters. The optical assembly is configured to: split each beam of the coherent optical radiation into a transmitted beam and a local oscillator beam; projecting the local oscillator light beam towards an optical detector; projecting the transmitted light beam towards a corresponding position on a target; and directing the optical radiation reflected from the respective location onto the optical detector so as to optically interfere with the local oscillator beam. A controller is coupled to: apply an amplitude chirped electrical drive pulse to the transmitters while controlling the switching circuit to multiplex the electrical drive pulse in time between the transmitters; and receiving and processing an electrical beat signal output by the optical detector in response to interference between the reflected optical radiation and the local oscillator beam.

An electronic scanning emitter array, which includes a two-dimensional optical emitter array arranged in k emitter groups. Each of the k emitter groups can include a subset of the optical emitters in the two-dimensional array and can be independently operated to emit light from its emitter subset. The electronic scanning emitter array can also include first and second capacitor groups coupled to supply energy to the two-dimensional optical emitter array, and an emitter array drive circuit coupled to the first and second capacitor groups and the k emitter groups. Each of the first and second capacitor groups can include at least one capacitor. The emitter array drive circuit can include a first high-side switch coupled between the first capacitor group and a voltage source, a second high-side switch coupled between the second capacitor group and the voltage source, and k / 2 low-side switches coupled between the k emitter groups and ground; and the emitter drive circuit can be configured to trigger one of the k emitter groups at a time according to a trigger sequence until each of the k emitter groups has been triggered.

To provide a suitable virtual and augmented reality display system.SOLUTION: A wearable display system includes one or more light-emitting microdisplay (e.g., micro-LED display). The microdisplay may be a monochrome or a color microdisplay. The microdisplay may include an optical emitter array. An optical collimator may be utilized for narrowing the angle emission profile of emitted light by the optical emitter. When using a plurality of light-emitting microdisplays, the microdisplays may be located on a different side of an X-cube prism that receives a beam from different microdisplays and outputs the beam from the same plane of a cube. An optical combiner directs light to a projection optical system that outputs light to an ocular lens that relays light to a user's eyes. The ocular lens may output light to the user's eyes by wave front dispersion with different quantity and present virtual contents to the different depth plane.SELECTED DRAWING: Figure 11A

A light therapy device includes a main body having an array of optical emitters, a display panel and a system controller. The array of optical emitters includes a plurality of sub arrays each having a plurality of individual optical emitters that operate at a target wavelength. Each of the optical emitters include are either a single-color LED, a multi-color LED, or near infrared LED, and each can operate at one of a fixed or user-defined wavelength. The display panel includes a touchscreen device that sends and receives information with a device user and provides a presentation screen showing a virtual representation of the output of the device. A remote control includes a display screen for remotely viewing and controlling the operation of the device.

A laser assembly (12) of a system (10) includes a first emitter assembly (30a), a second emitter assembly (30b), and a combiner lens (34). The first emitter assembly (30a) generates a first emitter beam (22a) that is directed along a first emitter axis (32a) at a beam intersection area (31). The second emitter assembly (30b) generates a second emitter beam (22b) that is directed along a second emitter axis (32b) at the beam intersection area (31). The combiner lens (34) receives and spatially combines the first emitter beam (22a) and the second emitter beam (22b) after the emitter beams (22a) (22b) have intersected at and passed through the beam intersection area (31). The laser assembly (12) includes a laser frame (18); an emitter array (20) that generates a plurality of emitter beams (22); a combiner lens assembly (24) that transforms and combines the plurality of emitter beams (22) into the assembly output beam (14); and a system controller (26) that controls the operation of the laser assembly (12). The combiner lens assembly (24) including combiner lenses (34, 36, 38) has a fast axis, front side focal point (24a), and a fast axis and slow axis, rear side focal point (24b). It is positioned so that its fast axis front side focal point (24a) is approximately at the beam intersection area (31). The optical fiber (16) is positioned so that its inlet facet (16A) is approximately at the fast axis and slow axis, rear side focal point (24b).

A method for heating a preform (1) comprising a body portion (4) extending along a longitudinal axis (A1). The method comprises the following steps: —introducing the preform (1) into a heating apparatus (5) comprising an array of infrared emitters (50) arranged in multiple columns (Cj) and rows (Ri); —setting power levels of the infrared emitters (50) so as to divide said array into subsets of columns (SCn); and—heating the preform while translating it in a direction parallel to the rows (Ri), and simultaneously rotating it around its longitudinal axis, the rotation and translation speeds, and the power levels of the infrared emitters (50) being set so that the power levels of the subsets of columns (SCn) facing zones (42) of the body portion extending longitudinally are different from the power levels of the subsets of columns facing the rest of the body portion, said zones extending relative to one another in a polygonal array.

A wrist-worn electronic device comprises a housing including a bottom wall configured to contact a user's wrist, an optical transmitter and receiver assembly and a processor. The optical transmitter and receiver assembly comprises a first optical transmitter array, a first optical receiver, a second optical transmitter array, and a second optical receiver. The first and second optical transmitter arrays transmit a plurality of first and second optical signals, respectively, that pass through a user's skin. The first and second optical receivers receive the first and second optical signals that travel along a first signal path and a second signal path, respectively, that are both substantially parallel to an arm axis of the user. The processor is configured determine physiological information about the user based on one or both of first and second electronic signals corresponding to the first and second optical signals.

The utility model relates to the technical field of decorative paper drying, in particular to decorative paper gum dipping and drying equipment which comprises a shell, a hot air circulation mechanism is arranged in the shell and comprises an air injection cylinder, and a recovery air cylinder is fixedly arranged on the outer side of the air injection cylinder through an air injection pipe; a second arc-shaped recovery baffle is fixedly arranged on one side of the recovery tank, and a first arc-shaped recovery baffle is fixedly arranged on one side, corresponding to the air spraying pipe, of the surface of the recovery air cylinder; and through the synergistic effect of the hot air circulation mechanism and the microwave emitter array, rapid drying of the decorative paper is achieved. The hot air circulating system can efficiently utilize hot air and reduce heat waste, meanwhile, microwave-assisted drying can further accelerate evaporation of moisture, the drying time is remarkably shortened, and the production efficiency is improved.

A communications device including an array of optical transmitters, each element of the array including an optical source and an antenna coupled to the optical source. The communications device also includes a plurality of tunable delay components interconnecting transmitters in the array of optical transmitters, and a communications signal path configured to conduct a communications signal through the array of the optical transmitters. The optical sources are synchronized.

An x-ray imaging apparatus 10 comprising a support 30 having two arms, wherein on one arm an x-ray emitter 50 is arranged, and on the other arm a flat panel digital detector 60 is arranged, the emitter and detector arranged opposite each other providing a space therebetween for the positioning of an object for x-ray imaging by the apparatus, the x-ray emitter comprising an array of emitters, the apparatus arranged such that in use different emitters are energisable independently from one another such that 3-dimensional tomosynthesis images are obtainable of the object, with the object, emitter and detector maintained stationary relative to one another.

The invention relates to a display device (62a-f), in particular a light field display device, for an AR headset (10a-f) and / or for a VR headset, with at least one top view and / or see-through element (12a-f) which is arranged for direct placement in a field of vision of a wearer of the AR headset (10a-f) and / or VR headset. It is proposed that the top-view and / or see-through element (12a-f) includes at least one integrated micro light emitter array (14a-f) with a plurality of micro-LEDs (16a-f, 18a-f) and / or with a plurality of micro-VCSELs.

A luminaire includes a first array light engine, a second array light engine, and a control system. The first array light engine includes a plurality of light emitters and first and second lens arrays, each with pluralities of lenslets. Collimation of light rays from the first array light engine varies as the second lens array moves relative to the first lens array. The second array light engine has a linear array of light emitters and a linear lens. Collimation of light rays from the linear lens varies as the linear lens moves relative to the linear array of light emitters. The control system controls a beam angle of the light rays from the first array light engine by moving the second lens array and controls a beam angle of the light rays from the linear lens by moving the linear lens.

The invention describes an illumination assembly (1) of a portable device (2), comprising an array (11) of semiconductor emitters (11E) and an imaging lens (10) arranged above the emitter array (11) and adapted to direct the light from each emitter (11E) into a corresponding region (11Eimage) of a target area (T); characterized in that the imaging lens (10) comprises a surface pattern (10S) adapted to shape the light from adjacent emitters (11E) such that the corresponding imaged emitter regions (11Eimage) overlap at the target area (T). The invention further describes a method of manufacturing such an illumination assembly (1), and a portable device (2) comprising such an illumination assembly (1).

A laser assembly (10) includes an emitter array (34) and a lens array (36). The emitter array (34) includes a first emitter (18A) that generates a first emitter beam (20A) along a first emitter axis (44A), and a second emitter (18B) that generates a second emitter beam (20B) along a second emitter axis (44B). The first emitter axis (44A) and the second emitter axis (44B) are spaced apart a first emitter separation distance (42a). The lens array (36) includes a first lens (22A) that colliminates the first emitter beam (20A), and a second lens (22B) that colliminates the second emitter beam (20B). The first lens (22A) has a first lens axis (48A) and the second lens (22B) has a second lens axis (48B). The first lens axis (48A) and the second lens axis (48B) are spaced apart a first lens separation distance (46a) that is different from the first emitter separation distance (42a).

This invention relates to the field of relay protection technology and discloses a method and device for identifying the status of a station-end relay protection pressure plate. By measuring the geometric parameters of the pressure plate and setting a virtual baseline, a miniature optical signal transmitting unit (single transmitter or coded transmitter array) and a receiving unit are deployed on the baseline. For a single transmitter scenario, the basic status of the pressure plate is identified by whether the beam is reflected. For a coded transmitter array, a grouped timing transmission strategy is used to obtain multi-dimensional features of the reflected optical signal. After fidelity verification, encoding decoding mapping, and vector calibration, the rotation angle of the pressure plate is determined, achieving multi-level status determination. This invention solves the technical bottlenecks of poor real-time performance, high image processing costs, and complex maintenance of traditional manual inspections and magnetic methods through non-contact photoelectric detection technology, achieving high-precision, real-time, and stable monitoring of the pressure plate status.

The invention discloses an unmanned aerial vehicle target intelligent detection method and device based on a laser-assisted event camera, and relates to the field of unmanned aerial vehicle target detection, and the method comprises the steps: employing a laser emitter array to emit laser in a dark environment, irradiating a propeller of an unmanned aerial vehicle, and employing the event camera to collect unmanned aerial vehicle event sequences at different distances; detecting the current state of the unmanned aerial vehicle according to the unmanned aerial vehicle event sequence; the current state of the unmanned aerial vehicle comprises a hovering state and a moving state; and determining the target detection result of the unmanned aerial vehicle according to the current state of the unmanned aerial vehicle, thereby improving the detection effect of the high-altitude unmanned aerial vehicle in a dark environment.