79 results about "Angular dimension" patented technology

An optical improvement for angular position sensors, which may be used to determine the spatial coordinates of a small source of light (or other energy) in a 3-dimensional volume. Such sensors normally include a linear photosensitive image detector such as a photodiode array or a charge-coupled device (CCD). An irregular pattern of parallel slits is described which increases the amount of light gathered while avoiding the undesirable characteristics of lens optics for this application. One optimal type of irregular pattern is the uniformly redundant array. A mathematical correlation function together with a polynomial interpolation function can determine the displacement of the image on the detector and thereby the location of the source relative to one angular dimension. Given the locations and orientations of several sensors in a 3-dimensional coordinate system and given the angles measured by each, the location of the point source can be computed.

Method and apparatus for radiance processing by demultiplexing in the frequency domain. A frequency domain demultiplexing module obtains a radiance image captured with a lens-based radiance camera. The image includes optically mixed spatial and angular frequency components of light from a scene. The module performs frequency domain demultiplexing on the radiance image to generate multiple parallax views of the scene. The method may extract multiple slices at different angular frequencies from a Fourier transform of the radiance image, apply a Fourier transform to each of the multiple slices to generate intermediate images, stack the intermediate images to form a 3- or 4-dimensional image, apply an inverse Fourier transform along angular dimension(s) of the 3- or 4-dimensional image, and unstack the transformed 3- or 4-dimensional image to obtain the multiple parallax views. During the method, phase correction may be performed to determine the centers of the intermediate images.

A head-wearable display includes a collimated light source, a beam steering mechanism, and a synchronization controller. The collimated light source selectively emits collimated light. The beam steering mechanism is optically coupled to receive the collimated light and angularly scans the collimated light between beam steering states that each redirect the collimate light to a different angular direction along at least one angular dimension. The beam steering mechanism is coupled to scan the collimated light across an eyebox. The synchronization controller is coupled to the collimated light source and the beam steering mechanism to synchronize selective emission of the collimated light from the collimated light source with the beam steering states of the beam steering mechanism to repetitiously draw an image in the eyebox.

A suture anchor device and method for attaching soft tissue to bone includes an anchor body and a suture locking wedge movably disposed within the anchor body. Tension applied to one side of a suture causes the suture locking wedge to move in a translational and angular dimension to a position which compresses the suture, thereby locking the suture in the anchor. The anchor body includes tracks or slots which guide the suture locking wedge from the unlocked open configuration to the locked configuration.

In one example of an embodiment of the invention, a method to correct for ring artifacts in an image is disclosed. A first Cartesian image is reconstructed based on data received from an imaging device, and the first Cartesian image is transformed into a first polar image. A first low-pass filter is applied to the first polar image, in the radial dimension, to form a second polar image, and the second polar image is subtracted from the first polar image to generate a third polar image. A second low-pass filter is applied to the third polar image, in an angular dimension, to form a fourth polar image, and the fourth polar image is transformed to Cartesian coordinates to form a second Cartesian image. The first Cartesian image is corrected based, at least in part, on the second Cartesian image.

The invention discloses a method for finely machining a pyramid cover of a drum part of a metallurgical machine, which finely machines a roughly machined workpiece by the following steps: 1, mounting the workpiece on a dividing apparatus and mounting the dividing apparatus provided with the workpiece on a worktable of a machine tool, wherein the workpiece and the dividing apparatus are in gapless rigid connection; 2, milling pyramids distributed along the direction of a group of buses on the top face of the workpiece; 3, milling the inclined working planes of the pyramids distributed along the direction of another group of buses of the workpiece; 4, milling the inclined working planes of all pyramids of the workpiece; and 5, polishing the inclined working planes of each pyramid. When the method is used for finely machining the pyramid cover, the angular dimensions of the inclined working planes of the pyramids are guaranteed accurately; the inclined working planes of the pyramids in the same circle are fully symmetric about the center of the inner hole of the pyramid cover in distance, angle and dimension; and the required precision of each inclined working plane of the pyramid cover is ensured.

The general field of the invention is, within the framework of terrain anti-collision systems for aircraft, the presentation in the Head-Up sight of a simplified symbology suited to these critical situations. It essentially comprises two identical vertical parallel bars of angular dimension substantially equal to the vertical angular field of the Head-Up visualization device, the positions of said bars in the horizontal plane being representative of the limits of the aircraft's clearance path and a horizontal bar disposed between the two vertical parallel bars so as to form an H, the position in the vertical plane of said horizontal bar being representative of the floor altitude that must be maintained by the aircraft. Other symbols supplement this piloting aid symbology.

The invention discloses a method for measuring the dimensions of specially-shaped conductor parts, which comprises the following steps: firstly, preparing a mandrel with the corresponding diameter according to the inclination aperture of the part to be measured, wherein one end of the mandrel is provided with an inclined plane intersecting with the mandrel end face, the intersecting line of the two planes passes through the diameter of the mandrel, and the angle of the inclined plane is in accordance with the inclination angle of the central line of an inclination hole of the part to be measured; secondly, connecting a limiting plate to the mandrel end face intersecting with the inclined plane of the mandrel; thirdly, placing the part to be measured on a detecting platform, inserting the mandrel along the inclination hole of the part, using the limiting plate to cause the end face having the inclined plane of the mandrel to superpose with the end face of the inclination hole of the part to change the inclined plane of the mandrel into a plane, and leading out the intersection point, namely an imaginary point D, of the end face of the inclination hole of the part and the central line thereof; and finally, using a measuring head of a height gauge to approach the intersecting line of the mandrel end face and the inclined plane so as to measure the height dimension H of the part. The method transforms the measurement imaginary point D of the part into a measurable point so as to satisfy the space and angle dimensions of the specially-shaped conductor of an isolating switch which cannot be measured by the prior method.

The invention discloses an intelligent variable elliptic sliding bearing assembly. The assembly comprising a variable elliptic sliding bearing and a detection control loop, wherein the variable elliptic sliding bearing is divided into an upper sliding bearing and a lower sliding bearing, the two sliding bearings are oppositely arranged, the upper sliding bearing is fixed, and the lower sliding bearing can swing around a pivot in certain range; in the detection control loop, a displacement transducer is arranged close to the elliptic sliding bearing and is connected with a controller, the controller is connected with a servo motor and an alarm, the servo motor is connected with an inclined slide block by virtue of a transmission screw, and the inclined slide block is connected with the lower sliding bearing. The assembly can change pivot angle direction and pivot angular dimension of the lower sliding bearing when rotating around the pivot by manually or automatically regulating the operating condition of the serve motor, thus flexibly adjusting the working condition of the sliding bearing and adapting to the requirement of different working conditions.

Embodiments of the invention generally provide an electron beam substrate processing system. In one embodiment, the present invention provides an electron beam substrate processing system where a spindle shaft used to rotate substrates during processing includes at least one optical encoder wheel assembly. The optical encoder wheel assembly is configured to provide rotational speed data signal to a rotational speed control system and a pattern generation clock circuit configured to a provide an angular pattern generator clock signal and to a pattern generator circuit. The pattern generation circuit is configured to control modulation of an electron beam used for substrate processing. In one aspect of the present invention, while the spindle shaft is rotated at a constant linear velocity, the pattern generation circuit controls the modulation of an electron beam such that written mark lengths are sized to be about constant in angular dimension.

There is provided a device for regulating the operation of a horological movement, including a magnetic escapement, which includes a resonator and a magnetic escapement mobile turning about an axis. The mobile includes at least one magnetic track with a plurality of magnets having an angular dimension that is greater than their radial dimension. The resonator includes at least one magnetic element for coupling to the magnetic track. The coupling element extends radially relative to the axis of rotation, and has a contour with a portion oriented substantially angularly when the resonator is in the rest position. When the mobile is driven in rotation, each magnet penetrates beneath the coupling element and gradually accumulates some potential magnetic energy. The magnet then exits from beneath the coupling element through the portion and the coupling element receives a pulse located around its rest position.

A calibration standard, for calibrating lateral or angular dimensional measurement systems, is provided. The standard may include a first substrate spaced from a second substrate. The standard may be cross-sectioned in a direction substantially perpendicular or substantially non-perpendicular to an upper surface of the first substrate. The cross-sectioned portion of the standard may form a viewing surface of the calibration standard. The standard may include at least one layer disposed between the first and second substrates. The layer, or a feature etched into the first or second substrate or a feature etched into the layer may have a traceably measured thickness or may be oriented at a traceably measured angle with respect to the viewing surface. A thickness or angle of the layer or other feature may be traceably measured using any technique for calibrating a measurement system with a standard reference material traceable to a national testing authority.

An optical device is provided that includes a converging lens device, a transmitting optical fiber, a sample holder, and a receiving optical fiber. The converging lens device focuses light onto the transmitting optical fiber, which receives the focused light through an entrance face and transmits the light from an exit face, through a sample, and onto the receiving optical fiber. The sample holder holds the sample for analysis. The receiving optical fiber receives the light through an entrance face of the receiving optical fiber after transmission through the sample. The converging lens device is positioned to focus the light onto the entrance face of the transmitting optical fiber such that a half-angle of the angular distribution of the focused light that reaches the entrance face of the transmitting optical fiber is selected to underfill an entrance aperture of the entrance face of the receiving optical fiber in both a spatial dimension and an angular dimension.

The invention discloses a multi-angle internal corner deformed abrasive paper frame. The multi-angle internal corner deformed abrasive paper frame comprises a first bottom plate and a second bottom plate which are connected in a hinged mode; the movable ends of the first bottom plate and the second bottom plate are connected with telescopic plates in a hinged mode; the first bottom plate and the second bottom plate are covered with abrasive paper, and the two ends of the abrasive paper are fixed to the telescopic plates; and the included angle between the first bottom plate and the second bottom plate is adjusted by adjusting the length of the telescopic plates. According to the multi-angle internal corner deformed abrasive paper frame, the purpose of changing the included angle between the first bottom plate and the second bottom plate is achieved by adjusting the length of the telescopic plates, and thus various angular dimensions of grinding work of wall corner putty can be handled;a torque sensor is arranged in a power device, the threshold value of torque is set in a controller, thus when the numerical value of the torque sensor is larger than the threshold value, the controller controls a motor to stop working, in this way, the value of the initial internal corner does not need to be measured, the grinding steps are simplified, and the working efficiency is high; and themulti-angle internal corner deformed abrasive paper frame is simple in structure, small in size, low in weight, easy to use and convenient to operate.

The invention discloses an underground reservoir dam body damage detection method and electronic equipment. The method comprises a step of acquiring a ground penetrating radar signal of an undergroundreservoir dam body, a step of preprocessing the obtained ground penetrating radar signal and obtaining ground penetrating radar preprocessing data including a reflected wave and a diffracted wave, astep of separating the diffracted wave in the ground penetrating radar preprocessing data, a step of performing angle domain compensation on the separated diffracted wave to obtain a first ground penetrating radar diffracted wave image gather, a step of levelling a diffracted wave signal in the first ground penetrating radar diffracted wave image gather and obtaining an offset velocity model of the ground penetrating radar signal, and a step of performing angle domain compensation on the separated diffracted wave again by using the offset velocity model to obtain a final diffracted wave imagegather of final ground penetrating radar, superimposing along an angular dimension in the final diffracted wave image channel gather and obtaining a diffracted beam focusing imaging result. Accordingto the invention, the recognition ability and efficiency of a disease diffracted wave signal of the underground reservoir dam body are improved, and the diseases of underground reservoir safety hazardare timely warned.

An indirect angle measuring and control method is applied in mechanical machining such as bench work filing or mould machining and measurement of small sheet metal angles. On a layout platform, a work piece to be measured is placed on a sine protractor, the work piece angle is converted into a plane by utilizing the sine protractor principle and measuring blocks, a cushion iron is absorbed under a magnetic force seat of a lever indicator, the measuring blocks are used for spelling the actual height between the angle plane and the layout platform, and the dial indicator is subjected to zero setting to measure the work piece angle. The angle size accurate measuring method is simple, practical and accurate and reliable in measurement.