116results about How to "The detection position is accurate" patented technology

An electro-optical device includes: an electro-optical panel having a first substrate, a second substrate, and an electro-optical substance interposed between the first and the second substrates; a third substrate arranged on the second substrate; a fourth substrate having a flexibility and arranged on the third substrate via a spacer; a position detector provided on the third substrate and detecting a pressed position on the fourth substrate based on changes in surface waves generated on the third substrate; and a resin film provided on the fourth substrate and opposed to the third substrate.

A touch panel display device includes a liquid crystal panel to display an image by regulating transmittance of light supplied from a back light unit, and a touch sensing part provided on upper edges of the liquid crystal panel in order to detect a position touched by a user or an object. The touch sensing part includes infrared lamps to generate and emit infrared light, infrared light reflecting tubes mounted with the infrared lamps, and image sensors to sense the infrared light output from the light output regions of the infrared light reflecting tubes. Each of the infrared light reflecting tubes has light output regions and non-output regions evenly formed at a surface facing an upper surface of the liquid crystal panel so that the infrared light emitted from the infrared lamps is evenly irradiated on the upper surface of the liquid crystal panel.

A touch panel using an optical sensor has a simple construction and can accurately detect an input position. An illuminating lights emitted from illuminating means are turned into lights having a high directivity in an X-axis direction and in a Y-axis direction of the prism lens sheet and thereafter enter from side faces of a light guide panel as incident lights. The incident lights advance in the inside of the light guide panel toward opposite side faces while being subjected to a total reflection and are received by the optical sensor arrays. When an input pen or a fingertip touches a surface of the light guide panel, the lights are refracted or absorbed at a touched position and hence, a quantity of received lights at the optical sensor arrays is reduced.

A magnetic sensor for an encoder has a sliding surface and detects magnetic field by keeping the sliding surface in contact with a surface of a magnetic medium to which a magnetic pattern with a predetermined magnetization pitch is recorded. The magnetic sensor includes a plurality of MR elements laminated with each other in a direction parallel to a direction of the magnetization pitch of the magnetic medium. Between two of the MR elements an insulation layer is sandwiched. Each of the MR elements has a plurality of linear sections.

A position detecting method for detecting a position of an object to be detected using a signal from an image of an alignment mark which consists of plural mark elements formed on the object, comprising the steps of acquiring first position information indicating a center position approximated from a form of the all signals, acquiring plural second position information indicating a center position in the alignment mark calculated from whole inflection points of the signal, and selecting the second position information as a center position in the alignment mark which is in a predetermined distance based on the first position from the plural second position information.

A displacement detecting device comprises: a light source, a first beam splitter adapted to split the light emitted from the light source into a first beam and a second beam, a reflecting member adapted to reflect the first beam, an objective lens adapted to condense the second beam on a surface-to-be-measured, a first light receiving section adapted to receive interference light of the reflected first beam and the reflected second beam, a relative position information output section adapted to output relative position information in height direction of the surface-to-be-measured, a second beam splitter adapted to extract a part of the reflected second beam, an astigmatism generator adapted to generate astigmatism in the extracted second beam, a second light receiving section adapted to receive the second beam having astigmatism, and an absolute position information output section adapted to generate absolute position information in height direction of the surface-to-be-measured.

A position-of-magnetic-pole detecting device includes first and second units for inferring a position of a magnetic pole. The first unit applies a current command while changing an excitation phase, infers a domain, where the position of a magnetic pole lies and which has the width thereof determined with a range of electrical angles, from the direction of rotation in which a motor rotates, and the excitation phase, and reduces the domain so as to infer the position of a magnetic pole. The second unit infers the position of a magnetic pole from a fed-back current returned responsively to a voltage command applied with the excitation phase sequentially changed. Thereafter, a voltage high enough to cause magnetic saturation is applied in order to determine the orientation of a magnetic pole, whereby the position of a magnetic pole is inferred. Although the first unit is selected, if the motor does not move due to friction or the like, the second unit is used to infer the position of a magnetic pole. If the position of a magnetic pole inferred by the second unit differs from one value to another, the first unit is used to infer the position of a magnetic pole.

An electro-optical device includes: an electro-optical panel having a first substrate, a second substrate, and an electro-optical substance interposed between the first and the second substrates; a third substrate arranged on the second substrate; a fourth substrate having a flexibility and arranged on the third substrate via a spacer; a position detector provided on the third substrate and detecting a pressed position on the fourth substrate based on changes in surface waves generated on the third substrate; and a resin film provided on the fourth substrate and opposed to the third substrate.

The apparatus in accordance with the present invention detects locations of opposite ends of a running strip in a width-wise direction and heights of the ends. The apparatus includes a first light-source irradiating a light onto a lower surface of a strip, a second light-source perpendicularly irradiating a linear light onto an upper surface of the strip, a camera taking a photo of the strip, and a calculation unit calculating locations of opposite ends of the strip in width-wise and height-wise directions thereof, based on an image resulted from a light irradiated from the first light-source and an image resulted from a light irradiated from the second light-source and reflected at the strip.

A laser beam scanning device is disclosed. The laser beam scanning device includes a diffraction optical element which forms a pattern of a diffraction image including two images extending in a direction corresponding to the sub scanning direction and one image extending in a direction inclined by θ (0<θ<90°) from the direction corresponding to the sub scanning direction by inputting a laser beam which is led to a surface of a photoconductor drum, and a light receiving element which receives the pattern of the diffraction image.

The present invention provides an image display device allowing accurate detection of a pointed position on a projection image to be achieved. The image display device include: an image light generating section generating image light based on an input video signal; a projecting section projecting the image light onto a screen to form a projection image; a reflection light splitting section splitting part of reflection light of the projection image from the screen to another direction; a light receiving section receiving the split light; an image generating / obtaining section generating a display image from the video signal and obtaining the projection image corresponding to the inputted video signal from the light receiving section; a position detecting section detecting a position pointed out on the projection image as a pointed position based on the display image and the projection image to output information of the pointed position on the projection image.

There is provided a position detection system (1) including a first marker (4) that produces a first alternating magnetic field having a first position-calculating frequency by means of an external power supply; a second marker (3) including a magnetic induction coil (5) having a resonance frequency equal to the position-calculating frequency; a magnetic-field detection section (13) that is disposed outside a working region of the second marker (3) and that detects a magnetic field at the first position-calculating frequency; an extracting section (24) that extracts, from the detected magnetic field, a first detection-magnetic-field component having the first position-calculating frequency and having the same phase as the phase of the first alternating magnetic field; and a position / orientation analyzing section (22) that calculates at least one of the position and the orientation of the first marker (4) based on the intensity of the extracted first detection-magnetic-field component.

The invention discloses a radar target locating method based on multipath utilization, and mainly aims at solving the problem that a radar point target cannot be located accurately in the multipath environment in the prior art. The method is realized by the steps that 1) an emission signal is generated to obtain echo data; 2) the echo data is processed to obtain time of arrival (TOA) of differentpaths; 3) a geometric location model of a radar target is obtained; 4) the obtained TOA of different paths are substituted into the established geometric location model; 5) an initial searching pointis initialized; 6) the geometric location model and the initial searching point are input to a searching function lsqnonlin, and the searching function lsqnonlin is used to obtain an accurate target position by searching; and 7) the target position obtained by searching is expanded to a 3D space. According to the method, multipath information can be utilized effectively, the established geometriclocation model is simple, the cost is lower, the location precision is improved, and the method can be used to locate low-altitude point targets.

The invention relates to an automatic electric leakage detection platform for an electric leakage circuit breaker. The automatic electric leakage detection platform comprises a frame, conveyor belts, a material loading table, a manipulator, a positioning table and a detection fixture, and is characterized in that the conveyor belts, the material loading table, the positioning table and the detection fixture are all arranged in the frame, the positioning table is arranged at the middle of the detection fixture, the two conveyor belts are respectively arranged at two sides of the detection fixture, the material loading table is arranged on the conveyor belts and moves along with the conveyor belts, a guide rail, which is vertical with the conveyor belts, is arranged above the frame, the manipulator is connected to the guide rail and slides thereon, the manipulator grabs an electric leakage circuit breaker on the material loading table above and then moves upward, then the manipulator moves to a position above the positioning table located at the middle of the detection fixture through a transverse moving mechanism and places and positions the electric leakage circuit breaker on the positioning table, and then the detection fixture at both sides moves inward so as to insert detection electrodes into wiring terminals of the electric leakage circuit breaker to carry out detection. The automatic electric leakage detection platform is accurate in detection position, small in error and high in precision.