45results about How to "Precise curvature" patented technology

A zoom lens has good optical performance, is compact, and has a high magnifying power, and is suitable for use in a video camera, a digital still camera, a cellular phone, or the like, and a image pickup apparatus employs the zoom lens. The zoom lens (1) includes a first lens group (GR1) fixed upon zooming and having a positive refractive power, a second lens group (GR2) having a negative refractive power, a third lens group (GR3) having a positive refractive power, a fourth lens group (GR4) having a negative refractive power, and a fifth lens group (GR5) having a positive refractive power, which are successively arranged in the order from the object side. At least the second lens group and the fourth lens group are moved for zooming. The first lens group includes a first single lens (G1) having a negative refractive power, a reflective member (G2) for bending an optical path through 90°, and at least one second lens (G3) having a positive refractive power, which are successively arranged in the order from the object side.

An image forming apparatus includes a phase calculation portion, a pattern recognition portion, and a correction coefficient output portion. The phase calculation portion calculates a shift amount of the scanning lines as phase information and, from the phase information, outputs a first set of coefficients. The pattern recognition portion outputs a pattern concordance rate by performing pattern recognition on the group of pixels of interest and peripheral pixels thereof. The correction coefficient output portion outputs a second set of coefficients for correcting the first set of coefficients in accordance with the pattern concordance rate. An interpolation processing portion performs interpolation calculations by referring to the first set of coefficients, the second set of coefficients, and the pattern concordance rate.

Provided are a lane separation line detection correcting device/method and an automatic driving system for stabilizing the behavior of a vehicle by correcting overestimated curvature information resulting from an erroneous detection of a curvature of a lane separation line. A travel speed detecting circuit detects, for example, a target travel speed as vehicle sensor information. A maximum curvature estimating circuit estimates, based on the target travel speed, a maximum curvature of a road along which an own vehicle is traveling. A curvature correcting circuit corrects a curvature of a lane separation line input thereto based on the maximum curvature. A control unit controls steering of the own vehicle based on the lane separation line having a corrected curvature. As a result, vehicle steering can be automatically controlled so as to prevent the own vehicle while traveling from departing from a driving lane.

The invention discloses an SLAM system for pipeline detection. The SLAM system comprises a pipeline robot, a controller, a forward-looking laser radar, a pipe diameter measuring device and a mileage wheel, wherein the pipeline robot moves in a pipeline; and the forward-looking laser radar, the pipe diameter measuring device and the mileage wheel are respectively connected with the controller; theforward-looking laser radar is used for detecting information of a front unknown pipe section in the pipeline and transmitting the detected information to the controller to establish a basic model; the pipe diameter measuring device is used for measuring the pipe diameter information of the current position of the pipeline robot and transmitting the measured pipe diameter information to the controller, and the controller optimizes and adjusts the basic model to form a trust model; and the mileage wheel is used for measuring the distance information of the pipeline robot travelling along the central axis of the pipeline and transmitting the measured distance information to the controller, and the controller calculates the pose of the pipeline robot at the moment by combining the distance information and the trust model. The SLAM system for pipeline detection can help to locate the defects of the long-distance oil gas pipeline and model the surveying and mapping of the detected pipeline.

The invention discloses hot press molding equipment, which comprises a frame. The equipment is characterized in that the frame is provided with a heating fixing device provided with an upper workbench and a lower workbench, and the opposite faces of the upper and lower workbenches are respectively provided with an upper die and a lower die; the frame is installed with an upper movement mechanism and a lower movement mechanism, the upper movement mechanism passes through the heating fixing device and is in transmission connection with the upper workbench, and the lower movement mechanism passes through the heating fixing device and is in transmission connection with the lower workbench; frame at the side of the lower workbench is provided with an auxiliary workbench which is composed of a left part and a right part; and the lower part of the frame is provided with a controller, the controller is connected with a control panel, and the control panel is provided with a plurality of keys and a current meter and a voltage meter. The hot press molding equipment has the advantages of simple structure, ingenious design, reasonable layout and convenient operation, shortens the processing procedure, ensures no deformation of the sheet material, and can complete the multiple steps in one operating table.

The invention relates to a curvature measuring instrument. The instrument comprises a frame, a slide caliper stand and a slide caliper, wherein the frame comprises two parallel guide rails; the slide caliper stand is connected with the guide rails in a sliding manner; the slide caliper stand is provided with an axial guide slot; the slide caliper is inserted in the guide slot and penetrates through the upper and lower surfaces of the slide caliper stand; the slide caliper and the slide caliper stand are locked by a bolt; and one end of the frame is provided with an inlet/outlet of the slide caliper stand. The instrument can accurately measure the curvature of a baseplate and is convenient to operate.

A therapeutic pillow includes a combination neck and head support pillow designed to support a neutral anatomical position. The pillow includes a fabric pillow cover designed to match a fabric cover surrounding soft fill and defines an outer periphery with a lower edge opposite an upper edge, into a side edges therebetween. A slit extends from a midpoint of the upper edge in parallel to the side edges toward the middle of the pillow and has a length of between about ⅓ of the length of the pillow. The slit defines two identical upper sections in the pillow whose facing edges are positioned adjacent one another, wherein a user may position his or her head in the slit with a lower section of the pillow supporting the user's neck. Item 83 is depicting an inner, zipper adjustable bladder, for the neck support. FIG. 9 shows the bladder in relationship to pillow and where it rests within the base of the pillow to support the neck. FIG. 9 item 82 shows the “T” slit designed to prolong use longevity where he neck rests. Zipper is used to adjust stuffing of pillow and blades entry from bottom. See item 24 in FIG. 3

An electrode line, in particular for an implantable electrostimulation device, which is adapted for insertion into body vessels such as heart chambers or blood vessels, comprising electrodes for the stimulation of body tissue, a longitudinal axis and a distal end, wherein there is provided at least one structural element (2) in the region of the distal end, which has an electrostrictive polymer and which can be connected to a voltage source by way of at least one electrical feed line (3) and which is adapted to change its shape when an electrical voltage is applied.

The present invention relates to a lens curvature variation apparatus using sensed temperature information. The lens curvature variation apparatus according to an embodiment is a lens curvature variation apparatus for varying a curvature of a liquid lens which is variable based on an applied electrical signal and includes a lens driver to apply an electrical signal to the liquid lens, a sensor unit to sense the curvature of the liquid lens formed based on the electrical signal, a temperature sensing unit to sense a temperature of a periphery of the liquid lens, and a controller to control the lens driver to form a target curvature of the liquid lens based on the sensed curvature, wherein the controller controls the lens driver to output a changed electrical signal to the liquid lens to form the target curvature, based on the sensed temperature. Thereby, the curvature of the lens can be sensed quickly and accurately using the sensed temperature information.