594 results about "Wide beam" patented technology

An apparatus and the method of its operation for rapid prototyping of a three-dimensional object which includes a radiant energy source of a wide beam of radiant energy of suitable intensity and wavelength for curing a layer of photo-curable resin contained in an open vat, a spatial light modulator (SLM) having an array of pixel elements which are individually digitally controllable by a computer, for modulating the radiant energy beam projected from the radiant energy source on a pixel by pixel basis, to form a series of time sequential images of the cross-sectional laminae of the object, an optical system for focusing each image formed by the SLM, one at a time, onto successive layers of photo-curable resin for predetermined exposure times to thereby form stacked laminae of cured resin, each lamina of cured resin being in the shape of a different one of the cross-sectional laminae, and a piston support for lowering each lamina of cured resin after it is formed by the SLM and for depositing a layer of resin corresponding to the thickness of one cross sectional lamina of the three-dimensional object before the step of projecting a new image by the SLM. The SLM, the piston support for lowering, and the optical system operate repeatedly and sequentially until a complete copy of the object is thereby produced.

A touch screen system, including a screen, a plurality of light sources coupled with the screen, for emitting light, a plurality of photo diodes coupled with the screen, for detecting the light emitted by the light sources, and for identifying the location of a touch on the screen when an absence of the emitted light is detected, and a plurality of lenses coupled respectively with the plurality of light sources to generate wide beams of light over a portion of the screen wherein substantially connected areas of the screen are covered by neighboring wide beams.

Various embodiments described herein include lighting systems that produce an optical beam. Moreover, in various embodiments, the beam may be altered to provide, for example, a narrow beam or a wide beam. One such lighting system includes a light source, a diffusing optical element, and a projection lens. The diffusing optical element is disposed between the light source and the projection lens and can be translated to provide zoom capability.

A radio signal relay device such as satellite is used to cover several relatively small geographical regions with relatively narrow beams as well as a relatively large geographical region with a single beam. This relatively wide beam permits legacy equipment to be used. A transmitting device in a beam transmits a signal to the relay device, which in turn retransmits the signal to a receiving device. The transmitting devices, relay device, and receiving devices synchronize communication by using a particular mode of communication which includes a band of carrier frequencies and a protocol. In addition to communicating like mode signals from a transmitter to a receiver, the relay device may be used in a dual mode communication system to translate signals from the one mode to another. A translator may direct a transmitter to modulate a signal on a different carrier frequency, convert one protocol into another protocol, or both.

A light source is combined with an optic and a reflector. Light incident onto to the reflector is reflected with a single reflection. The reflector occupies a portion of a solid angle around the light source to the exclusion of the optic at least with respect to any optical function. The reflector directly receives a second portion of light. The optic occupies substantially all of the remaining portion of the predetermined solid angle to directly receive a first portion of light from the light source. A reflected beam from the reflector is reflected into a predetermined reflection pattern. The inner and/or outer surface of the optic is shaped to refract or direct light which is directly transmitted into the optic from the light source from a first portion of light and/or reflected into the optic from the reflector from the reflected beam into a predetermined beam.

A method and device for transmission of wide beam in ultrasonic diagnostic systems is disclosed. The method comprises: dividing an aperture of an ultrasonic probe into N sub-apertures; laterally dividing a focus into N sub-focuses, wherein the N sub-apertures correspond to the N sub-focuses respectively, each sub-aperture has M array elements which all focus on a sub-focus corresponding to said sub-aperture; and N and M are integers larger than 2; exciting the N sub-apertures by a pulse generator, so as to obtain a laterally stretched transmit acoustic filed, wherein the transmit acoustic fields of the N sub-apertures focus on the corresponding sub-focuses respectively; and accumulating the acoustic fields of the sub-apertures to form an acoustic field of a wide beam covering acoustic fields of all receive lines. The present invention makes it possible for the system to transmit wide beams covering all receive lines, by dividing the aperture of the probe into a plurality of sub-apertures and accumulating the acoustic fields of the sub-apertures.

An air-to-ground communications system includes at least one base station to be positioned on the ground and including a ground-based transceiver, a phased array antenna coupled to the ground-based transceiver, and a beamforming network coupled to the ground-based transceiver. The ground-based transceiver is configured to provide data traffic and control information to an aircraft. The beamforming network is configured to simultaneously generate at least one narrow antenna beam for the data traffic and at least one wide beam for the control information.

A lens for a flashlight or other lighting unit provides for focusing light from a source, such as an LED, to provide a light beam adjustable between a spot beam and a wide beam. The lens includes a lens body with a front face, a rear LED-receiving well, and a side surface extending between the front face and the rear well. The front face includes a central surface surrounded by an annular concave surface. The rear well includes a space for the LED to be adjusted in position. The rear well space is defined by a concavely-curved sidewall and a concavely-curved base. The concave curvature of the sidewall and base may be Bezier curves.

A light funnel collimator has a central lens surface and a back reflecting surface, shaped to provide a wider back-ground beam and a narrower hotspot beam within but off-center of the wider beam. One of the beams is on-axis of the collimator, and the other beam is off-axis. The reflector is at least partly asymmetrical relative to the axis, and provides or contributes to the off-axis beam.

An amphibious recreational vehicle (motorhome, trailer, SUV, and the like) of conventional RV height, width, and length restricted dimensions necessary to travel on highways and roads, and which upon entering the water, the bottom of the vehicle expands outwardly and upwardly to form a fast planing, wide-beam, ground effects cathedral type double-tunnel hull. The hull makes use of a dynamic air cushion to augment the planing of the hulls, owing to the ground effect created by compression of the ram air stream (and water vapor) rushing through the two tapered tunnels separating the three hulls. The wheels of the vehicle are simultaneously raised out of the water to eliminate parasite drag. The resultant hull is substantially wider than the cabin, providing substantial ocean-going stability for the craft. The folded elements incorporated within the cabin rooftop, raise upward to form a traditional yacht flying bridge, complete with a windshield, steering station, seating, mast, and safety rails. The resultant watercraft closely approximates the off-shore speed, seaworthiness, performance, stability, cabin space, main deck space, and elevated flying bridge deck attributes of conventional yachts. And when on land, the craft is a fully functioning traditional recreational vehicle suited for fast highway travel, driving about towns, staying in RV parks, and camping in the wilderness. This amphibious recreational vehicle is an interrelated component divided from the inventor's previous Comprehensive Vehicle Construction And Hybrid Electric Drive System application.

The invention discloses a broadband wide beam dual-polarization dipole antenna, belonging to a dipole antenna. The broadband wide beam dual-polarization dipole antenna comprises an antenna cover plate, a reflection plate and a first antenna dielectric slab and a second antenna dielectric slab in cross fixing, wherein the first antenna dielectric slab and the second antenna dielectric slab are mounted on the reflection plate; the antenna cover plate is supported by at least three support columns and placed above the reflection plate, the first antenna dielectric slab and the second antenna dielectric slab; and toothed rails are arranged at the outer parts of the first antenna dielectric plate and the second antenna dielectric plate and also mounted on the reflection plate. By adding the toothed rails around the dipole antenna dielectric slabs, the antenna operation is effectively expanded, and the width of the wide beam is increased; the antenna unit covers the frequency range of 1,710-2,690MHz when the standing wave is less than 1.4, and is directly fed through a microstrip feeder and a through hole with a metalized edge in the reflection plate; and moreover, the processing is easy, the integration of an antenna and a feed network after array formation is facilitated, and the application range is broad.

A method and apparatus are provided that corrects for differences in reception between a user-specific signal and a common signal. In one embodiment, the invention includes receiving a common pilot signal transmitted on a wide beam at a remote terminal, receiving a user-specific signal transmitted on a directed narrow beam at the remote terminal, demodulating the user-specific signal using the common pilot signal for channel estimation, estimating a phase error in the demodulated user-specific signal using known symbols in the user-specific signal, and correcting for the phase error in the demodulated user-specific signal using the phase error estimates.

A lighting unit is provided including at least one LED, a plug for connecting the unit to an appliance and a light emitting element. The lighting unit may include electronic components to condition power from the appliance. The light emitting element may comprise a reflector where the LED emits light into the reflector and the light is collimated by the reflector and emitted from the unit. The position of the LED may be adjustable so the LED moves closer or farther from the reflector. Light is emitted from the unit in a narrower or wider beam in response to moving the LED. Alternately, the light emitting element may be an optical waveguide with a receiving end proximate to the LED emitting face and an emitting face away from and opposite the receiving face. The optical waveguide may collimate the wide angle of light emitted by the LED to form a narrow, directed beam.

A lens for a flashlight or other lighting unit provides for focusing light from a source, such as an LED, to provide a light beam adjustable between a spot beam and a wide beam. The lens includes a lens body with a front face, a rear LED-receiving well, and a side surface extending between the front face and the rear well. The front face includes a central surface surrounded by an annular concave surface. The rear well includes a space for the LED to be adjusted in position. The rear well space is defined by a concavely-curved sidewall and a concavely-curved base. The concave curvature of the sidewall and base may be Bezier curves.

The invention relates to an industrialized assembled multi-story high-rise steel structure centrally-braced system, belonging to the field of buildings. The industrialized assembled multi-story high-rise steel structure centrally-braced system comprises steel structure main body slab racks, bracing members and columns. Wide beams, narrow beams and slabs are integrally fabricated in a factory. The wide beams and the narrow beams are welded in the factory by using channel steel. Pipelines pass through positions between the web channel steel of the wide beams and the web channel steel of the narrow beams to form base slat racks A, base slab racks B and base slab racks C. High-strength bolts and partial welding only in the factory are adopted for parts where the base slab racks are connected with column bases and the wide beams are connected with the narrow beams. The column bases are connected with the columns through high-strength bolts and flanges. The industrialized assembled multi-story high-rise steel structure centrally-braced system has the advantages that the construction speed is fast, the structure bearing capacity is high, the lateral movement resistance is good, the strength of materials can be fully exerted, the horizontal load is effectively resisted, the structure interlayer displacement is reduced, the environmental pollution caused by welding is reduced and the cost is saved.

A motor vehicle headlight comprising a light source, a reflector and a cover lens. The reflector generates a pre-formed light beam such that its modification by any optical elements on the cover lens is unnecessary. The cover lens receives, from at least a substantial part of the reflector, radiation having a mean angle of incidence in a horizontal plane which varies progressively with horizontal displacement over the cover lens. The cover lens includes a set of striations for lateral deflection of the light, with each striation having an individual angular distribution law which is determined by the orientation of the light from the reflector and by the lateral spreading characteristic of the striation. The spreading characteristics of the striations are determined in such a way that the aggregate angular distribution law of the different striations has a curve which is essentially flat.

Aiming at the problem of how to perform multi-user initial access in a plurality of intelligent reflection surface auxiliary millimeter wave communication systems, the invention provides an efficientbeam training mechanism which can achieve the beam alignment of multiple users at the same time with lower training overhead. At first, a wide beam pattern design based on phase adjustment is provided, and a wave width controller capable of flexibly controlling the beam width by adjusting parameters is designed based on quadratic regression; aiming at a new network architecture after introductionof a plurality of reflecting surfaces, the invention provides a beam training strategy based on space-time search, and initial access of a plurality of users can be realized at the same time with relatively low training overhead; in order to accelerate a wave beam training process, new self-adaptive layered codebooks are designed on a base station and an intelligent reflecting surfaces respectively.

The invention designs a three-frequency dual-circular polarization GPS microstrip patch antenna, comprising circular truncated cone metal base, feed network and stacked patch, where the stacked patch comprises lower layer, medium layer and upper layer from the bottom up, respectively resonant with three frequency ranges; the feed network comprises 3dB electric bridge and wideband power dividers, i.e. using two power dividers to implement three-frequency range three-port output, simplifying the feed network. And the highly proper circular truncated cone metal base obviously increases low elevation gain. And the invention implements simultaneous operating of three-frequency range circular polarizations, having features of wide frequency range and good low elevation gain, and suitable for vehicle-carried multi-frequency multi-port wide beam circular polarization user machine antenna.