651 results about "High angle" patented technology

Balloon catheter covers are elastic fabric structures of interconnected yarns, the structure having a high degree of stretch and recovery in the circumferential direction with little change in dimension in the longitudinal direction during multiple pressurization cycles over full range of inflation and deflation of the balloon catheter. The covers have longitudinal yarns positioned at about zero degrees to the balloon axis and reversibly-stretchable, circumferential yarns positioned at a high angle Ø to the axis. A method for making the balloon catheter covers allowing nearly orthogonal placement of circumferential and longitudinal yarns involves triaxial braiding a minimum number of elastomeric braid yarns with multiple axial yarns to provide maximum convergence angle (approaching 90 degrees).

A polymer-dispersed liquid crystal based display is embedded inside a lightguide illuminator sheet which provides illumination of the display without the need for a backlight or frontlight. Light from one or more light sources is coupled into the lightguide sheet and is guided within a range of high angles of incidence within the sheet by total internal reflection. The guided light illuminating portions of the display which are in diffusing state is scattered such that some of the light is allowed to escape total internal reflection, providing visibility of the display. Guided light illuminating portions of the display which are in non-diffusing state remains guided within the lightguide illuminator sheet. Combining multiple lightguide embedded displays can be used to provide a three-dimensional display. When a low refractive index cladding is applied to the surfaces of the lightguide embedded display, the display is robust in a dirty environment, and/or can be laminated to adjacent lightguide embedded displays. The use of one or more coupled light sources, such as light emitting diodes, provides color by combining one or more colored light sources or by time-sequentially driving one or more colored light sources. The lightguide illuminator embedded display may further be used as a content dependent active backlight for an LCD display panel to provide improved dynamic contrast.

The present invention provides a balloon which achieves diameters greater than 6 mm for securement to a catheter. The balloon includes an elastomeric generally hollow pressure expandable body which exhibits essentially radial symmetry and constant length when expanded under an internally applied minimum working pressure from an uninflated state.

Methods for three-dimensionally characterizing a reservoir while drilling a high angle or horizontal wellbore through the reservoir are disclosed. An initial reservoir model for the reservoir is selected and a section is extracted for a planned trajectory of the wellbore. A secondary model is generated by performing secondary modeling for at least part of the planned trajectory. An area of interest is identified within the secondary model where statistical uncertainty is high. Possible causes of the statistical uncertainty are identified for the area of interest within the secondary model that are not present or accounted for in the initial reservoir model. A set of parameters for the area of interest are defined at that are based on the possible causes of statistical uncertainty. The area of interest is logged with at least one logging while drilling LWD tool. Sensitivities of the LWD tool response to the subset of parameters are evaluated by performing at least one tertiary model for a range of the subset of parameters. The most sensitive parameters from the subset of parameters and corresponding measurements are identified. One or more real-time LWD measurements to be used for proactive well placement along the planned trajectory are identified and are based on the most sensitive parameters. The initial reservoir model is updated while drilling with information from the tertiary model. The model update is based on physics-based modeling or on inversion and on running multiple models and selection of a best candidate model based on correlations between the tool measurements and modeled results for each geologic model.

The present invention provides a direct part mark symbol reader that employs the use of high angle bright field illumination and low angle dark field illumination to create a digital image of the symbol that can be subsequently decoded. The reader employs an optical subsystem that produces a sharply focused image at either of the reading positions associated with the dark field illumination and the bright field illumination.

The invention relates to a three-dimensional panoramic image generation method. The method comprises the following steps of: shooting a plurality of local images of a panorama at a low angle and a high angle at a horizontal position opposite to a tripod head by using a wide-angle camera respectively; synthesizing a plane composite image from each shot local image; converting the plane composite image into a three-dimensional spherical image; and performing three-dimensional navigation on the three-dimensional spherical image. By the method, the overlap region of the local images can be increased, so that the image effect is smoother and the obtained three-dimensional panoramic image is more similar to a real scene when the local images are synthesized into the plane composite image. The invention also provides a three-dimensional panoramic image generation system.

Metrology systems and methods that measure thin film thickness and or index of refraction of semiconductor wafers with at least one deposited or grown thin film layer. The present invention measures near normal incidence and grazing angle of incidence reflection (using reflected broadband UV, visible, and near infrared electromagnetic radiation) from a small region on a sample. Embodiments of the system selectively comprise a near-normal incidence spectrometer/ellipsometer, a high angle of incidence spectrometer/ellipsometer, or a combination of the two.

A retractable chine assembly includes at least one chine which is hingebly mountable to a surface such as of an aircraft having a wing. The chine is preferably configured to be movable between stowed and deployed positions. The aircraft may include an engine nacelle which may be mounted on an underside of the wing. The nacelle may generate a nacelle wake that passes over the wing upper surface at high angles of attack and induces flow separation. The chine is preferably configured such that a vortex generated thereby interacts which the nacelle wake to delay flow separation and stall.

A hybrid reflector system for use in lighting application. The system is particularly well-suited for use with solid state light sources, such as light emitting diodes (LEDs). Embodiments of the system include a bowl-shaped outer reflector and an intermediate reflector disposed inside the bowl and proximate to the light source. The reflectors are arranged to interact with the light emitted from the source to produce a beam having desired characteristics. Some of the light passes through the system without interacting with any of the reflector surfaces. This uncontrolled light, which is already emitting in a useful direction, does not experience optical loss normally associated with one or more reflective bounces. Some of the light emanating from the source at higher angles that would not be emitted within the desired beam angle is reflected by one or both of the reflectors, redirecting that light to achieve a tighter beam.

The present invention is a flow cytometry-based hematology system useful in the analysis of biological samples, particularly whole blood or blood-derived samples. The system is capable of determining at least a complete blood count (CBC), a five-part white blood cell differential, and a reticulocyte count from a whole blood sample. The system preferably uses a laser diode that emits a thin beam to illuminate cells in a flow cell and a lensless optical detection system to measure one or more of axial light loss, low-angle forward scattered light, high-angle forward scattered light, right angle scattered light, and time-of-flight measurements produced by the cells. The lensless optical detection system contains no optical components, other than photoreactive elements, and does not include any moving parts. Finally, the system uses a unique system of consumable reagent tubes that act as reaction chambers, mixing chambers, and waste chambers for the blood sample analyses. The consumable tubes incorporate reference particles, which act as internal standards to ensure that the dilutions made during processing of the samples have been carried out correctly, and to ensure that the instrument is working properly. The present invention also relates to methods for using the system.

A method of sample extraction entails making multiple, overlapping cuts using a beam, such as a focused ion beam, to create a trench around a sample, and then undercutting the sample to free it. Because the sidewalls of the cut are not vertical, the overlapping cuts impinge on the sloping sidewalls formed by previous cuts. The high angle of incidence provides a greatly enhanced mill rate, so that making multiple overlapping cuts to produce a wide trench can requires less time than making a single, deep cut around the perimeter of a sample.

A light module (1) suitable for use as a landing light for an airplane is disclosed, using an elongated array (2) of light emitting diodes (LEDs) as the light source. Light from the LEDs is directed toward a transparent cover (3). The cover (3) may include a plano-convex lens (4) at its center for nominally collimating the light from the LEDs. The cover (3) may also include a generally featureless peripheral region laterally circumferentially surrounding the lens (4). A faceted reflecting surface (6) having a generally parabolic base curvature (8) may extend circumferentially around a longitudinal axis of the landing light from the LEDs to the cover (3). Light exiting the LEDs at a relatively high angle of exitance reflects off the faceted reflecting surface (6) and transmits through the generally featureless peripheral region of the cover (3).

The invention discloses a CPU (Central Processing Unit) realizing method based on amplitude-comparison direction finding of a multi-frequency point omnibearing passive radar. A CPU and GPU (Graphic Processing Unit) heterogeneous hardware platform is adopted; a processing module with strong parallelism and the processing module with strong logicality are respectively realized on the GPU and the CPU; the platform is simple and high in use ratio; a system is simple in operation and strong in flexibility when being expanded; the coagulation and the angle measurement are carried out in the CPU; specifically, a coagulating-while-comparing amplitude angle measuring method is adopted; trace point coagulation is combined with amplitude-comparison angle measurement, so that the time for recombining the data after coagulation is omitted; the coagulation and angle measurement processes are embedded in multithreading, so that the time is further saved; and a target point containing the angle information is transferred to a terminal display control platform. According to the CPU realizing method provided by the invention, the problems that a target positioning effect of a single-frequency passive radar detecting system is inferior, the multi-frequency precision is high but the calculated quantity is large and the consumed time is long are solved. The CPU realizing method has the advantages of high processing speed, high angle measuring precision, and wide angle measuring scope, and can be applied to the target detection and positioning for the passive radar.

A staggered grid 3D seismic prestack reverse time migration imaging method based on GPU small storage capacity is a very important technology for 3D prestack depth migration imaging of complex structures. The reverse time migration method based on the two-way wave equation has been realized, which can accurately image the rotary wave and the large-angle reflected wave, and at the same time solve the problem of the large amount of calculation of this method. Utilizing parallel computing technology based on GPU hardware, staggered grid difference format, checkpoint storage and other technologies, and relying on Laplace imaging conditions, the pre-stack reverse time migration imaging of 3D seismic data is realized, which greatly shortens the computing time. The efficiency has been increased hundreds of times, and the imaging accuracy has been significantly improved.

The invention relates to an automatic coin quality detection device, in particular to a high-precision multifunctional automatic coin production quality detection device based on a visual system, realized by applying an image processing technology. The detection device comprises a combined illumination imaging light source, an image receiving unit, an image processing unit, a result output unit and a damaged coin discarding device, wherein the image receiving unit, the image processing unit, the result output unit and the damaged coin discarding device are sequentially connected; the combined illumination imaging light source adopts a mode that surface light sources at a high angle and a low angle illuminate at the same time; the image receiving unit collects image data on the coin surface; the image processing unit process the collected image data, confirms and discards defective products according to a production standard and transfers real-time detected images and analysis result information to the result output unit; and the damaged coin discarding device discards the ultra-detective products according to the control information of the image processing unit. The invention has the objective detection standard, can quantitatively prescribe, improves the production efficiency, can continuously upgrade the detection speed, emancipates the labor force and improves the automation degree of coinage.

Methods for installing tubulars (for example, conduits, casing or liners) into a highly deviated wellbore are disclosed. In a first embodiment, the method comprises a) drilling the well to the planned total depth of the interval, b) placing a first fluid into the wellbore below a prescribed measured depth in the high-angle portion of the wellbore, said first fluid having a density that causes the portion of the tubular that extends into the first fluid to become substantially neutrally buoyant, c) placing a second fluid into the wellbore above the prescribed measured depth, said second fluid having a density less than said first fluid, d) plugging the distal portion of the tubular with a lower plug (or check valve) and an upper plug, e) as the tubular is run into the wellbore, placing a lightweight fluid into the plugged section of tubular and a heavy fluid above the plugged section of tubular, and f) running the tubular into the wellbore to the planned total depth.

A visibility support system is provided which displays a wide field of view while absorbing camera installation errors. The visibility support system obtains a first conversion matrix H₁ for projecting a captured image onto the ground, while a second conversion matrix H₂ for projecting the captured image on a plane different from the ground (e.g. no-conversion unit matrix) is set. An extended high-angle view image is divided into a first region corresponding to the vehicle periphery and a second region corresponding to farther away from the vehicle, and a high-angle view image based on H₁ is displayed in the first region, whereas an image based on a weight-added conversion matrix in which H₁ and H₂ are weight-added is displayed in the second region. Weight for the weight-addition is varied according to a distance from the border of the first and second regions to seamlessly join the images in both regions.

To establish a technique that enables sorting of the elevation and azimuth angle in the direction of emitting secondary electrons and obtaining images with emphasized contrast, in order to perform the review and analysis of shallow asperities and microscopic foreign particles in a wafer inspection during the manufacture of semiconductor devices, an electromagnetic overlapping objective lens is used to achieve high resolution, an electron beam is narrowly focused using the objective lens, an electric field for accelerating secondary electrons in the vicinity of a wafer in order to suppress the dependence on secondary electron energy of the rotation of secondary electrons generated by irradiation of the electron beam, a ring-shaped detector plate is disposed between an electron source and the objective lens, and the low angle components of the elevation angle of the secondary electrons, as viewed from the place of generation, and the high angle components are separated and also the azimuth components are separated and detected.

An advantageous new design of a wind turbine blade and rotor is obtained by providing one, two or more parallel rows of sub-boundary layer vortex generators, whereby a blade is obtained, which is resistant to stall and provides for a high maximum lift coefficient C_L,max of the blades and a slender blade design, a low socalled radius specific solidity of the rotor. The very high lift coefficient C_L can reduce the necessary blade area and loads or/and increase the length of the blade and maintain the original loads with higher production. The row or rows of sub-boundary layer vortex generators are in a preferred embodiment of the invention provided in combination with Gurney Flaps generating a very high lift coefficient C_L with a relative gentle stall at very high angle of attack.