135 results about "Entrance angle" patented technology

The invention provides a puncturing guide (1, 16) for guiding a puncturing needle into a target site within the body of a patient. The puncturing guide (1, 16) comprises a base plate (2, 17), a needle guide (3, 18), a retainer (4, 19) for securing the needle guide (3, 18) to the base plate (2, 17), a first segment (7, 20) of a first semi-sphere, a second segment (8, 21) of a second semi-sphere, and a needle guide (3, 18) attached to the second segment (8, 21). During a positioning operation, the second segment (8, 21) slides on the first segment (7, 20), so that the needle guide (3, 18) is movable around the center of the first semi-sphere, which is in level with the underside of the base plate (2, 17), thereby providing the possibility to position the tip of a puncturing needle at a puncturing point on the patient's skin and then, in a separate operation, set the entrance angle of the puncturing needle without changing its entrance point.

A light source which may be used as part of a dental curing lamp is comprised of at least one, and preferably a plurality, of LEDs. To increase the efficiency of the light output the LEDs are encapsulated in a beam converger including an extractor portion and a collimator portion. Light rays leaving the collimator portion have an angle which matches the entrance angle input requirements of an associated light guide. In another aspect, cooling of LEDs is accomplished by reservoirs located in a hand piece and in a base station. In another aspect of the invention, cooling is achieved by use of a heat pipe and a cooling jacket. The cooling jacket may contain a material having a high latent heat of fusion at a phase change temperature suitable for cooling the LEDs.

The present invention discloses an apparatus for measuring spectrum and image with high spatial resolution and spectral resolution. The apparatus comprises an imaging side telecentric lens for collecting light from an object, an optical slit positioned behind the imaging side telecentric lens, an aspheric lens for collimating lights from the optical slits, a dispersing device for separating the lights of different wavelengths into a plurality of sub-rays of different entrance angle, an achromatic lens for focusing the sub-rays, and an optical sensor for detecting the optical intensity of the sub-rays. The dispersing device can be a transmission or reflection diffraction grating, and the optical sensor may consist of a plurality of photo-detectors positioned in a two dimensional array.

A kind of method of measuring the optics thin film absorption loss and it is characterized in that: utilizes the drift phenomenon generating by the optics thin film component reflection or the transmitted spectrum changing with the temperature and collects the proper detection optical wavelength and adjusts the entrance angle of the detection laser-beam (low power) relative to the sample surface and makes the detection optical wavelength located in the maximum location of the brim of reflection or transmitted spectrum. Makes the strength cyclic modulate (high power) continuous or impulse leaser-beam as the heating light-struck thin film component thin layer and detecting the same or adjacent location and makes the detection light beam from the sample surface reflection or transmitted light strength modulated or generated the transient variation. Use the photoelectric detection to monitor the real-time variation of the detection light strength of the thin film component reflection or transmission of the illuminating process of heating leaser-beam and monitor the absorption loss water of the thin film and the real-time variation of the optics performance and it can realize the absolute measurement of actual absorption deterioration by scaling the signal amplitude of vibration. In addition that it can realize the two-dimension high resolution imaging of the absorption deterioration by scanning the lateral attitude of the thin film component. The method can enhance the sensitivity of measurement the absorption deterioration at some conditions.

The invention discloses a six-reel steel band armouring machine, comprising a front mounting bracket and a rear mounting bracket, a rotor, six steel band reels, an active band releasing device, a band conduction device, an conductive device, a center adjustable protection tube, a brake apparatus, a motor driving device, an installation base plate and the like. The steel band armouring machine provided by the invention is used for manufacturing fluid delivery high pressure hoses and large-size power cables and controlling cables like a large-size petroleum pipeline, and adopts advanced mechanical structures and electrical appliance control technology to control the rotation speed of six band releasing motors, thus realizing that six steel bands are wound on large-size hoses or cables synchronously with same tensile force and accurate entrance angles, thereby achieving steel band armouring. The invention has advanced control technology, reasonable mechanical structure, simple operation and wide application range.

A rulable array of cube corners defined by three sets of parallel, equidistant, symmetrical vee-grooves is provided. The directions of the three vee-groove sets make three angles, no two of which are equal. When the array in viewed in plan, lines along the roots of the grooves determine a pattern of triangles in which the apices of the cube corners lie at distances from their respective triangle's centroid that are substantially less than the distance between the triangle's orthocenter and its centroid. In an unmetallized prismatic retroreflective sheeting, the array of quasi-triangular cube corners has the entrance angularity advantages of compound cant with nearly the efficiency of uncanted triangular cube corners at small entrance angles.

The invention provides a blind hole internal gear fine forming method and an internal gear forming die relating to the metal machinery processing and metal pressing fields of no cutting. The technical steps includes: computer simulation analyzing to study out a process forming scheme-baiting to manufacture roughs-surface intenerating and lubricating processing-fine forming-cutting off redundant part. A convex die profile of an internal gear forming die is corrected according to a gear precision grade tolerance belt and the gear precision is 6 to 5 grade. The surface roughness of the convex die is smaller than 0.5 micron. The thickness of a surface nanometer coat is 0.002 to 0.004 millimeter. A die entrance angle of at end surface of the gear is transited by a semi-arc. An effective width of a minor first flank is between 1.5 and 3 millimeter. A double surface back gap of the minor first flank is 0.3 millimeter smaller than the minor first flank by average. The transition cone angle between the minor first flank of the convex die and a basic die is 3 to 6 degrees. A concave die is formed through interference pressure distribution by adopting 2 to 3 layers of compound dies. The magnitude of interference is 0.4 to 0.5 percent of a matched dimension of a die. The invention has the advantages of short technique line, high manufacture efficiency, good consistence of the gear precision and high intensity.

A medical device includes a curved tubular body configured for being used as an extravascular device to support vein maturation following the formation of an arteriovenous fistula. The tubular body is curved. The tubular body has an entrance angle of less than about 40 degrees to improve blood flow from the artery into the vein. And the tubular body includes a cuff or edge at the proximal end to stabilize the tubular body at the fistula.

A location estimating apparatus according to an exemplary embodiment of the present invention is a location estimating apparatus which estimates a position of an electronic apparatus, including a distance calculating unit which calculates a distance from an AP using a strength (RSSI) of an AP signal which is received from the AP; an azimuth calculating unit which calculates an azimuth of the AP with respect to a reference direction using an entrance angle of the AP signal; a position information acquiring unit which acquires position information of the AP from the AP signal; a correction information generating unit which generates correction information based on detection information for movement of the electronic apparatus; and a position information generating unit which generates position information of the electronic apparatus using the distance from the AP and the azimuth based on the position information of the AP and corrects the position information of the electronic apparatus using the correction information.

This invention discloses one intelligent inlet angle limit lighter, wherein, the current motor limit is by mechanic or lighter for flameout at certain speed of generator, but that method can result in super hot temperature, costly oil and large noise with apparent impacting effect. This invention lighter adopts outlet angle lighting means or proportion lighting type to limit motor rotation to trace motor speed change to adjust to realize motor needed limit speed.

The invention discloses a Mars machine-machine separating orbit design method. The method comprises the following steps: S1. under a near focus coordinate system, establishing a Mars machine-machine separating orbit design equation taking landing orbit eccentricity as independent variable; and S2. by taking the minimum speed increment during orbit transfer of a landing machine as a target function, solving the Mars machine-machine separating orbit design equation by adopting a preset solving algorithm to obtain the landing orbit of the landing machine, thus completing the Mars machine-machine separating orbit design. According to the method, the minimum speed increment during orbit transfer as the target (landing through the shortest starting time of an engine), the constraint condition of an entrance angle when the landing machine enters Mars atmosphere can be met, and the method is simple and feasible and provides support for deep space detection machine-machine separation.

A pump for immersion in a fluid reservoir, such as a pit or lagoon containing liquid manure, from a position at an edge of the reservoir. The pump may be adapted for connection to a farm vehicle, such as a tractor, positioned at the edge of the reservoir. The pump comprises an extensible body, fluid conduit and drive means in order that a length of the pump may be varied in order to accommodate a variety of reservoir fluid heights. In addition, the pump may be pivotable relative to at least a portion of a frame in order that the entrance angle may be adjusted. The pump comprises a bottom housing with a bottom inlet and at least two tangential fluid outlets that are upwardly angled towards the conduit. A combiner is provided to merge the outlets with the fluid conduit. An impeller within the housing is shaped to transfer fluid tangentially and upwardly within the housing to co-operate with the upward angle of the outlets. These features reduce fluid pressure loss and thereby increase fluid flow rate through the pump for a given input power.

According to an embodiment disclosed herein, an apparatus for cooling a rotating part having cooling channels therein, the rotating part attaching to a disk rotating about an axis, the disk having a conduit for feeding a cooling fluid to the cooling channel is described. The apparatus has a first impeller rotating with the disk and in register with the conduit and an outer periphery of the disk, the impeller directing the cooling flow to the conduit.

A single molecule fluorescence sample quick longitudinal super resolution method uses total internal reflection fluorescence detecting system. Depth of penetration of exciting field is changed by entrance angle of laser beam being changed in detecting course, according to functional relationship of imaging intensity of single molecule fluorescence having relationship with depth of penetration depth, information of longitudinal interval between fluorescence molecule, absolute longitudinal position and diameter of that are rebuilt. The invention can realize nanometer magnitude longitudinal super resolution of fluorescence molecule, has simple and fast operation and excitation and detection having no touch with sample, can detect sample of solid state and under liquid circumstance and obtain several parameters with once measurement.

An electro-optical crystal electro-optical factor measure method and device comprises the following steps: a laser with visible wave bands passes a polarizing lens, a ground glass, a to be tested electro-optical crystal and a polarization analyzer in sequence, and a white screen receives an exit light spot and an interference pattern formed by diffusion light caused by the ground glass; a polarization direction of the polarizing lens and the polarization analyzer is vertical, and an adjustable DC voltage is applied to the to be tested electro-optical crystal; firstly, select a property laser entrance angle ([theta]0, [phi]0) through theory analysis, wherein the ([theta]0, [phi]0) refer to angles between an entrance laser propagation direction and each electric induction main shaft of the to be tested electro-optical crystal; in measurement, the DC voltage applied to the to be tested electro-optical crystal is adjusted to OV, an angle between the to be tested electro-optical crystal and the entrance laser is tuned, so the exit light spot can fall on a dark zone, corresponding to the entrance angle ([theta]0, [phi]0), in the interference pattern; the DC voltage is gradually boosted and the exit light spot position in the process does not change, and the interference pattern will change; when the exit light spot fall on next adjacent dark zone on the interference pattern again, the DC voltage value U is recorded; the corresponding electro-optical factor can be obtained through theory calculation.

A retroreflective article with excellent wide-angle characteristics is provided. Entrance angle characteristics, observation angle characteristics, and rotation angle characteristics are improved. In a retroreflective article, an assembly of multidirectional retroreflective elements is formed, in which either five, or seven or more unit elements are formed so as to share two common base edges forming the triangular base face of the unit elements and a common vertex at which the common base edges intersect, with an adjacent retroreflective element.

The sports training system of the present invention is preferably used in association with the sport of basketball to improve a player's shooting and dribbling fundamentals. The system includes a tower positioned between the player shooting the ball and the basketball hoop. The tower requires the player to shoot the ball over the top of the tower. The act of shooting the ball over the tower requires the player to have a preferred release angle, which in turn, causes the ball to descend towards the hoop at a preferred entrance angle. The system also includes a pad configured to be stood upon by the player, which ensures that the player's feet are properly aligned with the basketball hoop. The system may also have a core training apparatus to improve a player's dribbling fundamentals by requiring the player to dribble the ball in a crouched athletic stance.

A light reflector of which the bidirectional reflectance R1 is from 90 to 120% when the light entrance angle is 15° and the light acceptance angle is 0°, and the bidirectional reflectance R2 is from 85 to 110% when the light entrance angle is 75° and the light acceptance angle is 0°. The light reflector has high reflectivity, and attains brightness improvement even in underlight-type backlights.

According to an embodiment disclosed herein, an apparatus for cooling a rotating part having cooling channels therein, the rotating part attaching to a disk rotating about an axis, the disk having a conduit for feeding a cooling fluid to the cooling channel is described. The apparatus has a first impeller rotating with the disk and in register with the conduit and an outer periphery of the disk, the impeller directing the cooling flow to the conduit.

A retroreflective article with excellent wide-angle characteristics is provided. Entrance angle characteristics, observation angle characteristics, and rotation angle characteristics are improved. In a retroreflective article, an assembly of multidirectional retroreflective elements is formed, in which either five, or seven or more unit elements are formed so as to share two common base edges forming the triangular base face of the unit elements and a common vertex at which the common base edges intersect, with an adjacent retroreflective element.

The invention discloses a structural wave-absorbing material, which mainly overcomes the defects of the prior art that only electromagnetic waves with a single polarization angle can be absorbed, the wave-absorbing entrance angle is narrow and only one wave-absorbing peak point exists. The structural wave-absorbing material is made of a medium substrate (220), the back face of the medium substrate (220) is a fully-metallic base plate (230), and the frontal face of the medium substrate (220) comprises an etched metallic pattern (210), wherein the metallic pattern (210) consists of four metallic line arrows (211) which point at the center and a regular polygonal metallic line frame (212) with sides having an even number which is more than 3 or a circular annular metallic line frame (512); two short lines (211B) at top ends of the four metallic line arrows form a symmetrical +-shaped cross structure, the middle of which is provided with a +-shaped gap (213) and the tail end of a middle bar (211A) of each metallic line arrow is connected with the metallic line frame. Compared with the prior art, the structural wave-absorbing material has the advantages of capability of absorbing electromagnetic waves with a random polarization angle, widening the wave-absorbing entrance angle and having two wave-absorbing peak points.

A polarizer and a method of producing the same are provided. A laminated body is clamped by a fixing device and a base of a grinding apparatus. And then, an edge of the laminated body is grinded by a grinding surface of a grinding device of the grinding apparatus with a given entrance angle to produce the polarizer with a great size precision.

The invention discloses a method and control system for automatically adjusting efficiency of a DC brushless motor according to loads. The system comprises the motor and a motor built-in control board, wherein the motor built-in control board comprises a VSP reading module, a rotating speed detection module, a current detection module and an entrance angle adjusting module; the VSP reading module is used for reading rotating speed instructions; the rotating speed detection module is used for rotating speed detection; the current detection module is used for detecting and processing operation currents; and the entrance angle adjusting module is used for setting an entrance angle and substituting a set value into a motor system. According to the invention, by use of the method and such a structure, the VSP reading module reads a target rotating speed, the rotating speed detection module confirms an actual rotating speed of the motor, through adjusting the entrance angle, the actual rotating speed of the motor matches the target rotating speed, working currents of the motor is sampled, and an optimal efficiency point of the motor is adopted, such that the motor can be adaptive to different systems, the development time of the motor and the type number of motors required by clients are reduced, the time efficiency of development is greatly improved, and the cost is decreased.

The invention discloses a honeycomb material large entrance angle low damage processing cutter and a honeycomb material large entrance angle low damage processing method. The processing cutter comprises a toothed cutterhead and a cutter bar component, wherein the cutter tooth of the toothed cutterhead is provided with a primary cutting edge, a secondary cutting edge and a side edge. According to the invention, a circular disc type cutter is adopted to cut and process honeycomb material; the position relation between the cutter and a workpiece hole lattice is determined according to theoreticalcalculation, so that the range of the entrance angle theta at a single-layer hole wall is equal to or greater than 90 degrees and less than 165 degrees as much as possible during the machining process, and the surface burr is effectively reduced; and in addition, the processing cutter with a positive edge dip angle is utilized to move the position of an entry point inwards, so that hole wall tearing due to defect expansion is avoided, and low damage processing of the molded surface, the chamfer and the cutting side of the honeycomb material is realized. The processing cutter can effectively cut off the low-rigidity complicated hole wall structure in the honeycomb material surface and reduces the surface burr; and moreover, the cutting edge inclination angle of the primary cutting edge facilitates inward movement of the entry point position, so that longer hole wall tearing due to defect expansion is avoided.

The invention relates to a method for adjusting the self-tracing pose of a mobile welding robot, which belongs to the technical field of automatic welding. The method comprises the following steps: getting the welding robot march toward the direction at an entrance angle of less than or equal to 90 degree, and searching a weld joint according to a characteristic model of a welding groove; according to the pose of the welding robot and the distortion characteristics of laser streaks projected on the groove, obtaining the initial entrance angle of the mobile welding robot; performing differential preadjustment to make the entrance angle of the mobile welding robot less than or equal to 20 degree; and applying a least square method to perform preweld self-tracing pose adjustment to position the mobile welding robot under the weld joint, wherein a bodywork of the mobile welding robot is parallel to the weld joint and a welding gun is positioned in the center of the weld joint. The method adopts closed-loop feed control, realizes precise self-tracing pose adjustment of the mobile welding robot at the entrance angle range of between 0 and 90 degree, is stable and reliable and has short adjusting distance and strong antijamming capacity on external environment.

An interferometric measuring device for recording shape, roughness or separation distance of the surface of a measuring object, having a modulating interferometer, to which is supplied short coherent radiation by a radiation source, having a measuring probe that is spatially separated from the modulating interferometer and is coupled to it via a light-conducting fiber set-up, in which combined beam components are split in a common arm in a partially transmitting region into measuring and reference beams, and having receiver and evaluating devices for converting the supplied radiation into electrical signals and for evaluating the signals based on phase difference. A construction for reliable measurements even in tight hollow spaces provides that the partially transmitting region is formed by a slanting exit face of a probe fiber at an exit angle as to the optical probe axis and a likewise slanting entrance face, of a fiber section following on the object side, as to the optical probe axis at an entrance angle, a wedge-shaped gap being formed between the exit and entrance surfaces.

A method for tooling a pattern of retroreflective microcubes, which pattern can be subdivided into smaller increments within which there are straight line tooling paths, none of which pass through an otherwise solid part of the incremental pattern. The tooling paths within the various increments need not be parallel to a common plane.Various adaptions of the method enable the tooling of a number of specific microcube shapes and for modifying such optical properties of the microcubes as entrance angularity, incidence angularity, orientation angularity, observation angularity, percent active aperture and retroreflectance. Specific techniques govern the pre-selection of cube parameters such as cube axis cant, cube apex decentration, and cube boundary proportions, which parameters can be adjusted independently of each other. Designs tooled by the method can have 100% active aperture at near zero degrees entrance angle.The method involves providing a plurality of plates of micro thickness, each plate having at least one end comprised of a material that can be tooled with polished surfaces by means of an appropriate tool, tooling on said end of each plate an increment of the pattern, and assembling the plates together in various ways to form a master.Retroreflective articles made by means of this technique are expected to provide superior performance when used in pavement markers, highway signs and other applications.

A dual light-source position detecting system for use in touch screens is provided that utilizes parallax to determine the position of an interposing object, and a prismatic film that is brightly retroreflective over a broad entrance angle to enhance to accuracy of the parallax determination of position. The position detecting system includes at least one camera positioned to receive light radiation traversing a detection area and that generates a signal representative of an image; two spaced-apart sources of light radiation, which may be LEDs, or IR emitters positioned adjacent to the camera for outputting light radiation that overlaps over at least a portion of a detection area, and a prismatic film positioned along a periphery of at least a portion of the detection area that retroreflects the light radiation from the two sources to the camera.

The invention discloses an electronic cam control system of a programmable logic controller. The electronic cam control system comprises an encoder and a controller, and the controller comprises an FPGA signal processing module and an output circuit. The FPGA signal processing module comprises an encoder position decoding unit, a CPU and a signal comparison unit, wherein the encoder position decoding unit is used for decoding an encoded position data signal sent by the encoder, obtaining current position data of a mechanical shaft and calculating the current rotating speed of the mechanical shaft; the CPU is used for receiving the current rotating speed of the mechanical shaft, and calculating ON / OFF parameters of an actual action based on the current rotating speed of the mechanical shaft and based on ON / OFF parameters and entrance angle compensating parameters which are set by users; the signal comparison unit is used for comparing the ON / OFF parameters, output by the CPU, of the actual action and the current position data, output by the encoder position decoding unit, of the mechanical shaft, and if the current position data of the mechanical shaft are within the range of the ON / OFF parameters of the actual action, an on / off signal is sent to a corresponding action element so as to control actions of the action element.