4514 results about "Deflection angle" patented technology

The invention concerns an illumination system, particularly for microlithography with wavelengths <=193 nm, comprising a light source, a first optical component, a second optical component, an image plane and an exit pupil. The first optical component transforms the light source into a plurality of secondary light sources being imaged by the second optical component in said exit pupil. The first optical component comprises a first optical element having a plurality of first raster elements, which are imaged into said image plane producing a plurality of images being superimposed at least partially on a field in said image plane. The first raster elements deflect incoming ray bundles with first deflection angles, wherein at least two of the first deflection angles are different. The first raster elements are preferably rectangular, wherein the field is a segment of an annulus. To transform the rectangular images of the first raster elements into the segment of the annulus, the second optical component comprises a first field mirror for shaping the field to the segment of the annulus.

A front camera for filming an area stretching forwards is disposed in a front portion of a vehicle. A side camera for filming an area stretching laterally and diagonally forwards is disposed in a lateral-left portion of the vehicle. An indicator display that can be visually recognized by a driver is disposed in a compartment of the vehicle. An amount of change in the direction of the vehicle, that is, a deflection angle of the vehicle is detected on the basis of a vehicle speed and a steering angle of a steering wheel, which have been detected by means of various sensors. After the indicator display has started displaying a lateral photo image filmed by the side camera, the photo image displayed by the indicator display is shifted from the lateral photo image filmed by the side camera to a front photo image filmed by the front camera if the deflection angle has reached a predetermined angle.

Devices and methods for achieving directed placement of guidewires or other flexible rails over which other catheters or other devices may be introduced to a targeted location. A guidewire directing device includes a lumen extending between a proximal end and a distal peripheral opening for directing a guidewire laterally from the device, and may have a deflecting member with a predetermined deflection angle in the lumen adjacent the peripheral opening. A snaring device is also provided that includes one or more lumens through which a snare or other grasping member is directed for releasably capturing or coupling to a guidewire. The snaring and target guidewire devices may include cooperating end effectors for releasably coupling or securing the devices together. The devices may be used for directing, snaring and / or manipulating one or more guidewires between two blood vessels connected by an interstitial channel, for example, to “floss” a guidewire through the coronary arterial and venous systems between two percutaneous entry sites and / or to bypass a lesion in a vessel using proximal and distal interstitial channels communicating with an adjacent vessel.

The present invention relates to a steerable catheter assembly, comprising an elongate outer shaft having a lumen therethrough and having a proximal end and a distal end; an elongate inner shaft coaxially disposed within the lumen of the outer shaft and having a proximal end and a distal end; and characterised in that at least one of the inner shaft and the outer shaft is formed with a curvature at a distal portion, such that in an aligned configuration, a distal end of the catheter assembly is disposed at a maximum deflection angle α to a longitudinal axis of the catheter assembly; and the inner shaft and the outer shaft are rotatable relative to one another out of the aligned configuration such that each shaft exerts a deflection force on the other shaft to deflect the distal end of the catheter assembly between α and 0 degrees to the longitudinal axis of the catheter assembly.

A motor control device capable of suitably inhibiting the pulsating torque of an alternating-current motor is provided. The motor control device comprises an axis error inference machine (30) which infers an axis error based on a current value of an inverter, detected by a current sensor (2); a Fourier rectification machine (316a) which extracts an axis error vector from the time-base changes of the axis error; an integral control machine (316b) additionally provided with a circular amplitude limiter, which is used to calculate a correction current vector for offsetting the pulsating torque, wherein a circle with a set amplitude limiting value serving as the radius is used as the base for limiting the movement of the correction current vector, and the integral control machine (316b) additionally provided with the circular amplitude limiter performs the circular amplitude limiting for limiting the movement of the correction current vector so as to enable the deflection angle of the correction current vector to be close to the deflection angle of the axis error vector.

The invention relates to a method and system for screening face images. The method comprises the following steps: according to preset face integrity standards, face size threshold and face position threshold, obtaining a first screening result; according to a preset definition threshold, obtaining a second screening result; according to a preset best angle threshold, obtaining a third screening result; and according to the sum of similarities between each face image and other face images, the definition of each face image and the face deflection angle, obtaining the weighting sum of each face image in the third screening result, and acquiring a face image with the maximum weighting sum for face identification. The method can be used for solving the problem that the face is mistakenly identified due to the low quality of an input image, the data volume of the face images is effectively reduced, and the operation load during face identification is relieved; and moreover, the data volume of the face images is reduced, front face images with high quality are effectively screened to be identified, and the accuracy and real-time performance of face identification are improved.

A device for the aiming and the visual indication of a reading area of a coded information reader includes an emitter which emits a preferably collimated light beam towards a reading area of a coded information reader, as well as a refractive optical element. The refractive optical element deflects at least one first portion of the light beam so as to generate at least two different beam portions active on at least two different zones of the reading area along at least two different optical paths. The refractive optical element includes opposed first and second faces which respectively collect the light beam and project the at least two beam portions onto the reading area. The second face includes at least one (preferably more than one) first surface portion inclined by a predetermined angle α with respect to the first face and adapted to deflect the at least one first light beam portion by a predetermined deflection angle β with respect to the optical axis Z. The device is adapted to be mounted on a coded information reader to provide the operator with a visual indication of the reading area framed by the reader, before carrying out the reading of the information contained in the area.

The invention relates to a visual computing and prewarning method of deviation angle and distance of an automobile from a lane line. The image processing and computer vision technologies are utilized, and the deviation angle and distance of the automobile from the lane line are computed in real time according to the road surface image acquired by a vehicle-mounted camera, thereby estimating the line crossing time for safety prewarning. The method comprises the following steps: detecting the lane lines of the road surface image to obtain a linear equation of partial lane lines; establishing a three-dimensional coordinate system by using the camera as the initial point, and recording the mounting height and depression angle of the camera; calibrating the focal length according to the lane detection result under the condition of a given deflection angle; computing the deflection angle and vertical distance of the automobile relative to the lane line according to a pinhole camera model; and estimating the deviation time from the lane according to the instantaneous running speed of the automobile, thereby obtaining the safety prewarning or intelligent control information of the running automobile.

The invention discloses a mobile phone-based panoramic photographing realization method and a mobile phone. The method comprises the following steps of: prompting a user to rotate for a photographing angle when a previous photograph is taken, timely detecting each-axle rotation angle of the mobile phone by a started gyroscope, and timely prompting the user to modify the photographing angle when the detected x-axle and / or y-axle deflection angle of the mobile phone exceed(s) a preset angle; prompting the user to stop rotating, take the current photograph, and store and add corresponding angle information when the x-axle deflection angle and the y-axle deflection angle of the mobile phone are detected to be less than the preset angle, and Z-axle rotation angle reaches an appointed angle of the position for taking the next photograph; and sequentially jointing the taken photographs according to each stroked photograph naming angle information, and combining into the panoramic photograph. A new function of the mobile phone is increased: the mobile phone can automatically prompt the user to modify the photographing angle, and the user can preferably control the photographing angle, so that a panoramic image with a better effect can be obtained, and the mobile phone is simple to operate and easy to realize.

An optical scan unit (10) is configured to include a light source (11), a divergent light conversion element (12) having such positive power as to convert divergent light from the light source (11) into convergent light to form a spot on a projection plane, an optical deflector (13) deflecting a light beam from the divergent light conversion element (12) to a first scan direction and a second scan direction which is orthogonal to the first scan direction, and a deflection angle conversion element 14 (14) having such negative power as to convert a deflection angle of the light deflected by the optical deflector (13).

This invention discloses a multi-nozzle gasifier, which comprises: a shell, a jacket and side nozzles. At least a layer of side nozzles is set at the middle-upside of the gasification chamber along circumferential direction. The axial deflection angle alpha is within 0-18 deg., and the radial deflection angle beta of the side nozzle is within 0-22.5 deg., wherein alpha and beta cannot be 0 deg. at the same time. This invention also provides a method for gasifying by using the multi-nozzle gasifier. The multi-nozzle gasifier is suitable for large-scale production of synthesis gas from coal and sulfur-containing fuel gas, can prolong the residence time of carbon-containing solid reactant, and has high gasification conversion rate.

The invention discloses an automobile traveling control system and an automobile traveling control method and belongs to the technical field of automobiles. The automobile traveling control system comprises an acquiring unit, an environment sensing unit, a traveling parameter collecting unit, a planning and decision-making unit and a real-time control unit, the acquiring unit is used for acquiring a driving instruction, the environment sensing unit is used for sensing automobile traveling environment in real time and generating environment information, the environment information includes one or multiple of lane line position, target automobile information, current automobile pose and garage position information, the traveling parameter collecting unit is used for acquiring a current automobile traveling state and generating automobile traveling parameters, the automobile traveling parameters include one or multiple of current automobile speed, front wheel deflection angle and automobile traveling route, the planning and decision-making unit is used for generating a control instruction according to the environment information, the automobile traveling parameters and the driving instruction, and the real-time control unit is used for controlling automobile traveling according to the control instruction. The automobile traveling control system integrates functions of lane line maintaining, self-adpative cruising and automatic parking, so that functions of an intelligent automobile are further enriched.

Multi-core optical fiber probe includes a multi-core optical fiber (and method of manufacturing the probe) including a plurality of cores adjacent a cladding material, and a plurality of angled reflectors disposed at a distal end of the cores. An angled reflector of the plurality of angled reflectors deflects light propagating in the core at a deflection angle that is different from an axis of light propagation in the core. Light propagating toward a distal end of the core of the multi-core probe is emitted, after reflection by the corresponding reflector, out of the multi-core optical fiber probe.

The invention discloses a three-hole transonic speed pressure probe. As a pneumatic technology develops, a transonic speed air flow appears more and more frequently, for instance, many air flows in an aeroengine reach a transonic speed state, so these transonic speed flow fields need to be measured and analyzed during development of engine components. Conventionally, the transonic speed flow fields are measured respectively by use of a total pressure probe and a direction probe so that total pressure and air flow directions can be obtained. When a flow speed reaches a transonic speed, the probes are under great resistance, and the probes are blown bent easily. When the flow speed reaches an ultrasonic speed, due to the existence of shock waves, there is large total pressure loss, and the influences exerted by the probes on the flow fields are quite large. Though these conventional probes can be used in an ultrasonic air flow, the influences exerted by the probes on the flow fields cannot be neglected, and the requirement for the strength of the probes is quite high. The novel three-hole transonic speed pressure probe provided by the invention is used for measuring the transonic speed flow fields. By use of the probe provided by the invention, the intensity of the shock waves in front of the probe can be weakened during measurement, the influences exerted by the probe on the flow fields are reduced, air-flow total pressure, static pressure, a Mach number and an air-flow deflection angle can be measured simultaneously, the resistance acting on the probe can be effectively reduced, and the firmness and reliability of the probe are guaranteed.

The invention relates to a position and attitude parameter measurement system of a machine body of a boring machine and a method thereof, and the position and attitude parameter measurement system consists of a line laser transmitter, a rack of the line laser transmitter, laser targets, a programmable computer controller, an A / D conversion module and two inclination sensors. The line laser transmitter is positioned by a laser direction indicator and the rack of the line laser, emits a fan-shaped laser beam and forms linear spots on the machine body of the boring machine. An photosensitive element in one position on one of the two laser targets consisting of the photosensitive elements senses the laser beam and generates a current signal at any time, and the current signals are processed and calculated by an internal circuit of the laser targets and the programmable computer controller, thereby determining the positions of the laser beam on the laser targets; furthermore, the mounting positions of the laser targets on the boring machine are known, thereby obtaining a deflection angle and deflection displacement of the boring machine. Two inclination sensors measure a pitch angle and a roll angle of the boring machine, thereby completing the measurement of position and attitude parameters of the machine body of the boring machine. The system has the advantages of low cost, high precision, good real-time property and convenient operation.

A three-dimensional display system provides a projection screen having a predetermined angularly-responsive reflective surface function. Three-dimensional images are respectively modulated in coordination with the predetermined angularly-responsive reflective surface function to define a programmable mirror with a programmable deflection angle.

A detecting and error-correcting method capable of rapidly and accurately obtaining an element center and a deflection angle is disclosed. Interested edge area can be rapidly and accurately found out through an automatic edge area extraction method based on combination of binary morphology and image reduction, and subsequent edge extraction image scope is minimized as possible. Pixel level edge is roughly positioned at first, and accordingly a sub-pixel edge is rapidly extracted by one-dimensional curve fitting method. The method overcomes the defect of complex algorithm of a conventional sub-pixel edge extraction algorithm based on two-dimensional images, and the time of extracting accurate sub-pixel edge can be shortened. Weighted least square rectangular edge fitting algorithm based on linear hazen paradigm can detect straight lines on any positions of an image, and effectively minimizes influence of outlier on fitting precision due to uneven edges. The central positions of a plurality of elements and deflect angles can be rapidly and accurately detected at once, and the efficiency of visual detection is improved.

The invention relates to a man-machine interaction method based on estimation of human face posture, comprising the steps as follows: human face image sequence is obtained by a camera, and five characteristic points such as two corners of eyes, two corners of mouth, and an apex of a nose are automatically extracted after pre-processing; taking a right side image as the reference, three deflection angles of human face in any image are estimated according to the positions and the corresponding relations of the five characteristic points; mouse pointer position and operation mode are defined by the posture information to generate man-machine interaction information; and a new visual mouse device is formed by being connected with a computer through a USB interface. As the supplement of traditional man-machine interaction method, the device is applicable to some special interaction groups (for example, disabled persons) and interaction environments (for example, multimedia game), and has obvious application value.

A prism type lens structure is provided. A plurality of piezoelectric elements are mounted to a reflection prism. The deformation of piezoelectric elements corresponding to the applied voltages controls the deflection angle of the reflection prism to compensate the unsteady optical path caused by vibration. Therefore, the image of light signals may be controlled to precisely and steadily focus in an image sensor element to reduce the vibration due to hand shake.

The invention relates to a horizontal and vertical coordination control method for trajectory tracking of an intelligent vehicle. For association and coupling characteristics of horizontal and vertical dynamics of the intelligent vehicle, a horizontal and vertical coordination controller for trajectory tracking of the intelligent vehicle is designed. By applying a model prediction control and sliding mode control algorithm, the opening degree of a throttle valve of an engine, the pressure of a main braking cylinder and the deflection angle of a front wheel are cooperatively controlled. In thedesign of a horizontal MPC, the state amount of the vehicle is selected at the formula which is shown in the description, and the state amount (vertical speed vx) is real-time changable vehicle speedoutput by the vehicle after vertical control; vy is a horizontal speed at the mass center of the vehicle; the formulas which are shown in the description are the heading angle and heading angle speedat the mass center of the vehicle; Y and X are a horizontal position and a vertical position under world coordinates. According to a horizontal and vertical coordination control system, the intelligent vehicle efficiently and stably tracks an expectation trajectory at the expected speed. Large-steering operation can be remarkably improved, and the horizontal stability of the intelligent vehicle inthe trajectory tracking process is improved.

A spatial light modulator includes an upper optically transmissive substrate held above a lower substrate containing addressing circuitry. One or more electrostatically deflectable elements are suspended by hinges from the upper substrate. In operation, individual mirrors are selectively deflected and serve to spatially modulate light that is incident to, and then reflected back through, the upper substrate. Motion stops may be attached to the reflective deflectable elements so that the mirror does not snap to the bottom substrate. Instead, the motion stop rests against the upper substrate thus limiting the deflection angle of the reflective deflectable elements.

The present invention provides a cutter rock-breaking mechanism which is applied in the technical field of the cutter experiment and an abrasion resistant tester thereof. The abrasion resistant tester comprises a hydraulic cylinder, a structural frame, a bearing plate, a cutter support, a disc-shaped hob and a rotation worktable. When the cutter rock-breaking mechanism and the abrasion resistant tester work, the disc-shaped hob is connected with the cutter support through a bolt. The cutter support is jointed and fixed on the bearing plate through the bolts. The hydraulic cylinder exerts a certain load to impact the disc-shaped hob to the rock sample on the worktable and generate a certain penetration. Afterwards the worktable is rotated through a power system to execute cutting test to the rock passively. The cutter rock-breaking mechanism and the abrasion resistant tester execute cutting with a single cutter to do the abrasion resistance test of the cutter. The bearing plate is provided with a groove. The regulation to the cutter space and the phase angle is realized through the variation of the jointing position of the cutter support on the bearing plate. The regulation to the inner deflection angle of the cutter is realized by changing the cutter supports with different angles. The positioning and rotation of the rock are realized through the rotating worktable. The designing of the device is novel and scientific. The knife angle, phase angle and inner deflection angle which affect larger to the rock breaking and abrasion of cutter are researched. The device settles the problem that two hob cutters simultaneously cut the rock.

The invention discloses a star sensor calibrator and a method for calibrating a high-precision star sensor. The star sensor calibrator has the structure that a two-dimensional adjustable plane mirror is arranged on the optical path between a single-star simulator and a star sensor to be calibrated; the position forming an included angle of 90+ / -15 degrees with the two-dimensional adjustable plane mirror is provided with a laser device of a laser angle measuring device; the position 50-200 cm away from the center of the two-dimensional adjustable plane mirror is provided with a high-precision two-dimensional guide rail which can vertically and horizontally move on an optical hover platform; a laser detector of the laser angle measuring device is installed on the high-precision two-dimensional guide rail; after being reflected by the two-dimensional adjustable plane mirror, the laser emitted by the laser device is incident into the laser detector; and a data processing computer is respectively communicated with the star sensor to be calibrated and the laser detector. The invention does not need to rotate the star sensor, increases the tangential distortion and the deflection angle of the installation error, and can meet the requirements for very-high-precision (sub-arcsec) star sensors. The invention has the advantages of simple method and small amount of calculation.

The invention discloses a laser heterodyne interference linearity measuring device and a laser heterodyne interference linearity measuring method with six-degree-of-freedom detection. The laser heterodyne interference linearity measuring device comprises a laser heterodyne interference linearity and position detection part and an error detection and compensation part; a four-degree-of-freedom error detection light path consisting of three ordinary beam splitters, a polarizing beam splitter, a plane reflecting mirror, a convex lens, a position sensitive detector and two four-quadrant detectors is additionally arranged in a light path structure of the laser heterodyne interference linearity and position detection part. By utilizing a method for integrating the laser heterodyne interferometry and a laser spot detection method, the simultaneous six-degree-of-freedom detection of a deflection angle, a pitch angle, a rolling angle, horizontal linearity, vertical linearity and linearity position of a measured object can be realized, the error compensation is carried out for the vertical linearity and the vertical linearity position, the influence of rotation error of the measured object on a measurement result in the linearity measuring process can be eliminated, and the measurement precision of the laser heterodyne interference linearity and the position of the laser heterodyne interference linearity can be improved.

The invention provides an information display system capable of automatically adjusting the visual range and a display method of the information display system. After a sensing module is used for capturing the information of a driver and detecting the distance between the sensing module and the driver, the face feature information comprising the positions of the eyes, the face deflection angle, the drive watching position and the like of the driver is further identified to estimate the projection range, namely the position of the visual range of the driver, of the driving information on a front windshield, the position and the angle of a projection device are adjusted according to the projection range, and therefore the projection device can project a picture at the accurate position of the front windshield.

A three-dimensional display system provides a projection screen having a predetermined angularly-responsive reflective surface function. Three-dimensional images are respectively modulated in coordination with the predetermined angularly-responsive reflective surface function to define a programmable mirror with a programmable deflection angle.

A light beam is deflected by refraction and total internal reflection through a first prism, and projected through a first lens onto a scene that is to be scanned. The prism rotates, which varies the deflection angle and scans the beam across the scene along a scan line. Preferably, the successive side surfaces of the prism have different tilt angles relative to the rotation axis, so as to respectively deflect the beam in different deflection planes which cause successive scan lines of the beam across the scene. The emitted beam gives rise to a reflected beam from the scene, which is received through a second lens and deflected onto a photodetector through a second prism congruent to and rotating synchronously with the first prism. This apparatus is suitable as a laser scanning device for an object recognition system or a spacing distance regulation system of a motor vehicle.

The invention discloses a tool and a method for measuring the deflection angle of an airplane control surface. The measuring tool comprises a control surface clip (1), a stabilizer clip (6), a brace rod (5), a regulating arm (4), a sensor support (3), an angular displacement sensor (7) and a forked rocker arm (2). The measuring process comprises the following steps: clamping the stabilizer clip (6) of the measuring tool to a force-bearing position of a vertical tail stabilizer (45), sequentially mounting the brace rod (5), the regulating arm (4), the sensor support (3), the angular displacement sensor (7) and the forked rocker arm (2) in place, clamping the control surface clip (1) to a force-bearing position of an upper rudder (46), and moving the angular displacement sensor (7) to a rotary shaft of the upper rudder (46) so as to measure the deflection angle of the control surface. The invention can be simultaneously used for measuring the deflection angle of the rudder or the elevator in the bench test or the ground built-in test of an airplane, can be directly used for measuring the deflection angle of the control surface without disassembling structural parts of the airframe, and is especially suitable for the condition that the deflection amount can not be educed for measurement by means of a link mechanism in case that the rotary shaft is arranged inside the envelope of the control surface.

The invention discloses a scalable wheel type snake-shaped robot. The snake-shaped robot consists of a head part, a tail part, body parts and knuckle parts, and can move bi-directionally, wherein the head part and the tail parts have the same structure, a mounting hole is arranged, and corresponding sensors are arranged as required; the body parts can realize gravity induction type independent scalability of wheels by adopting an electromagnetic eight-direction independent scalable wheel structure, the body part close to the head part and the tail part is provided with a driving wheel for providing driving, and other body parts are provided with driven wheels; and the knuckle parts can realize the horizontal and pitching deflection of adjacent modules by adopting a cross-shaped gear structure, and the creeping and peristalsis of the whole snake-shaped body can be realized by reasonably regulating the deflection angles of all knuckles. The wheel type movement and creeping and peristalsis form can be independent from each other and can also be combined, and the adaptability and the traveling speed of the snake-shaped robot can be effectively promoted under complex terrain conditions.