45results about How to "Expand the imaging area" patented technology

The invention belongs to the technical field of surgical navigation, and particularly relates to an extension ultrasound vascular imaging device and method based on a catheter path. The extension ultrasound vascular imaging device comprises a three-dimensional ultrasound instrument, a set of electromagnetic positioning equipment, an interventional catheter and a computer, wherein the three-dimensional ultrasound instrument scans a vessel through an ultrasound probe to obtain a three-dimensional image. The electromagnetic positioning equipment comprises a magnetic field generator and two positioning sensors with six degrees of freedom, wherein the magnetic field generator defines a space coordinate system, one positioning sensor with six degrees of freedom is installed on the ultrasound probe to obtain the space coordinate of the ultrasound image, and the other positioning sensor with six degrees of freedom is embedded in an inflexible portion at the front end of the catheter to obtain the space coordinate of the front end of the catheter. The three-dimensional ultrasound instrument and the electromagnetic positioning equipment are both connected with the computer, and the obtained three-dimensional ultrasound image and the obtained catheter path are rebuilt in the same coordinate system through the computer. The extension ultrasound vascular imaging device can position branches of the vessel after the vessel of an area deforms, wherein ultrasound imaging cannot be conducted on the area.

An optical imaging lens system includes six lens elements which are, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has negative refractive power. The third lens element has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fourth lens element has positive refractive power. The fifth lens element has negative refractive power. The sixth lens element has positive refractive power.

There is described a method using an X-ray imaging unit, which has an arched support for the X-ray source and the X-ray detector. In the method, in a scan carried out by moving the support around an examination object a plurality of X-ray images of an area of interest are recorded using different projection angles, from which a three-dimensional image of the area of interest can be reconstructed. In this case the X-ray focus of the X-ray source is guided on a segment of a circular path of at least 180° around the examination object. In the case of a non-centric location of the area of interest, the support is rotated in such a manner prior to each of the X-ray imaging processes around an axis of rotation passing through the X-ray focus that the central ray of the X-ray beam for the X-ray imaging processes passes through the center of the area of interest.

Provided herein are a method and an apparatus for examining foreign matters in through holes, which can quickly make determinations with low costs and high accuracy. An apparatus is equipped with a light source 12 provided on one side and a line sensor camera 14 (or an area sensor) provided on the other side with a work piece 10 having a plurality of through holes being placed between them. A parallel displacement system (XY table 16) is provided to translate the work piece and the line sensor camera relative to each other to allow the line sensor camera to detect light passing through the plurality of through holes in one lot, and an image processing device 24 is provided to receive detected signals provided by the line sensor camera to obtain a plurality of binary image data corresponding to the plurality of through holes in the work piece. The image processing device is equipped with a determination device that makes determination as to whether foreign matters are present or absent in the through holes based on deviations among receiving light regions corresponding to the respective through holes.

An imaging apparatus has an imaging area formed by arranging a plurality of imaging blocks each including a pixel array, a plurality of vertical signal lines, a horizontal output line commonly provided for the plurality of vertical signal lines to read out signals read out to the plurality of vertical signal lines, a first scanning circuit, and a second scanning circuit, wherein signals of the pixels of a selected row in the pixel array are read out to the plurality of vertical signal lines in accordance with a driving pulse from the first scanning circuit, the signals read out to the plurality of vertical signal lines are sequentially read out to the horizontal output line in accordance with a driving pulse from the second scanning circuit, and a length in a row direction of the pixel array is smaller than a length in a column direction of the pixel array.

An information processing apparatus is disclosed which includes: a discrimination section configured to discriminate an object drawing the line of sight of a user viewing an image displayed on a display screen, the discrimination being based both on coordinate information indicative of where the line of sight of the user is positioned relative to the image and on object information including area information indicative of an image area including the object in the image; and a processing section configured such that when the discrimination section discriminates the object drawing the line of sight of the user, the processing section selectively performs a process corresponding to the object discriminated by the discrimination section.

The invention discloses a display screen and an electronic device with the display screen. The display screen comprises a first substrate and a second substrate, wherein a plurality of light-tight areas are formed on the first substrate, and a plurality of light-pervious areas are formed among the plurality of light-tight areas; and the second substrate and the first substrate are superposed, a polarizing part is arranged on the second substrate, the projection of the polarizing part on the first substrate at least covers parts of the light-pervious areas, and the polarizing part is used for increasing the light-pervious angle of the light-pervious areas covered by the projection. The display screen disclosed by the embodiments of the invention has the advantages that by arranging the polarizing part on the second substrate, the light-pervious angle of the light-pervious areas covered by the projection of the polarizing part can be increased, expansion of an imaging area of a camera isfacilitated, and the shooting effect is improved. Furthermore, occupation of the space of the display screen by the camera can be avoided, a full screen display effect is realized, the screen-to-bodyratio of the display screen is increased, and thus, the practicability and the aesthetic property of the display screen are improved.

A polyaerizable composition comprising: (A) a compound which causes at least one of decarboxylation and dehydration by heat; (B) a radical initiator; (C) a compound having at least one ethylenically unsaturated bond; and (D) an infrared ray absorber.

A visual presenter includes a base, a column support standing on the base and having a distal end, the column support including an upright part standing upright from the base and a horizontal part that is continuous from the upright part and extends horizontally ahead of the base, the camera head being adapted to image a material placed on an installation surface for the presenter, and a plurality of legs which are mounted on an underside of the base so that one of the legs is located at a predetermined position spaced backward from a front of the base by a predetermined distance. The legs extend in a direction perpendicular to the underside of the base so that an imaging area of the camera head on the installation surface is enlarged so as to cover an area immediately before an installation point of the leg.

The actuation range obtained with a bending piezoelectric actuator in MEMS mirror system is mechanically amplified by fixing the moving end of the actuator to a suspender which suspends a reflector from a frame. The fixing point lies somewhere between the two ends of the suspender. The actuator and the suspender together form an actuator unit with a greater actuation range than one actuator can obtain by itself. In one embodiment, the suspender is a rigid lever. In another embodiment, the suspender is another bending actuator so that an additional increase in the actuation range can be obtained from the actuating movement of the second actuator.

Supplemental reference surface devices are provided for use in three-dimensional modeling of intra-oral scenes using identifiable positional characteristics from structured illumination or other techniques. Reference surface devices having at least one substantially plane smooth non-polished face are disclosed for locating the positions of intra-oral features, and for stitching together separate 3D tiles according to the identifiable positional characteristics. Reference surface devices include a mounting point of known position relative to the faces, which can be attached to an intra-oral feature in or adjacent to the imaged intra-oral scene. Disclosed are reference surface devices having orientation and position indicia, as well as reference surface devices having a multiplicity of faces distributed in spatial position and angular orientation to facilitate correlation of 2D images obtained by imaging systems in different positions. Sizes of the faces of reference surface devices are optimized for resolving patterns of identifiable positional characteristics while providing suitable spatial and angular distributions.

A visual presenter includes a base, a column support including an upright part and a horizontal part, and a camera head mounted on a distal end of the horizontal part. The horizontal part includes first and second horizontal parts. The first horizontal part is mounted on a first support shaft further mounted on the upright part, so as to be pivotable between a downwardly extending position and a horizontal position. The second horizontal part is mounted on a second support shaft further mounted on an end of the first horizontal part located opposite the first support shaft side, so as to be pivotable between a horizontal backward position and a horizontal forward position.

A trapezoidal correction processing portion performs trapezoidal correction (distortion correction) on video image areas each of which is divided into a plurality of video image areas separately in accordance with the divided video image areas. In this case, each of the video image areas is divided into a plurality of areas. Further, a pair of right and left virtual image formation sections perform trapezoidal correction in a mirror symmetric manner, and the center position of the wearer's eye in each of the virtual image formation sections is so adjusted that the center position coincides with a distortion-free image corrected by using a small amount of correction.

The invention discloses a wide-visual-angle integrated imaging 3D display device based on barrier and pin hole arrays. The barrier array is disposed between a 2D display screen and the pin hole array, thereby enabling the light from each image element to just form an image through the corresponding pin hole, avoiding the crosstalk of adjacent image elements in a horizontal direction, enlarging the imaging region of each image element, and enabling the view angle of the display device to be larger. Furthermore, the device does not need to reduce the horizontal diameter of the pin hole or reduce the number of the image elements in a miniature image array so as to enlarge the view angle. Therefore, the display device can achieve the visual-angle integrated imaging 3D display under the condition that the optical efficiency and resolution are not reduced.

An image pickup apparatus includes an insulating substrate, and a plurality of pixels each including a conversion element configured to convert incident light or radiation into a charge and also including a switch element configured to transfer an electric signal corresponding to the charge generated by the conversion element. Gate wiring is configured to drive the switch element to transfer the electric signal through signal wiring. The plurality of pixels, the signal wiring, and the gate wiring are disposed on one surface of the insulating substrate. The insulating substrate has vias that provide electrical connections between the one surface and an opposite surface of the insulating substrate.

A lens with an optical area to increase a defocus image refractive powers is disclosed. A central optical zone of the lens includes a non-circular optical area, and a defocus area formed on a part thereof other than the optical area. An outer surface of the peripheral optical zone is aspheric, so that the original space of the central optical zone can be effectively used to increase the defocus image area of the retina of eye ball and light passing the peripheral optical zones can create different amounts of peripheral blurring areas in front of different areas of the retina; this defocusing of the images, providing more controlled amount of myopic defocus to the retina, which acts as a putative cue to slow myopic eye growth.

A lens with elliptic asymmetric optical zone to increase defocus image area is disclosed. The lens includes a central optical area to pass light to image on central imaging area of retina; a peripheral optical area formed around the central optical area and configured to pass light to image on a peripheral image blurring area on peripheral of the central imaging area; an elliptic asymmetric optical zone formed on the surface of the central optical area and configured to pass light to clearly image on the central imaging area; and a defocus area formed on a portion of the central optical area other than the asymmetric optical zone. The defocus area can be used to increase defocus image area of the central imaging area, to extend a range of the optical area having defocus effect on the retina without the need to excessively increasing the defocus power of the lens.