33 results about "Dual focus" patented technology

A CT system includes a rotatable gantry having an opening for receiving an object to be scanned, at least one x-ray source coupled to the gantry and configured to project x-rays toward the object, a detector coupled to the gantry and having a scintillator therein and configured to receive x-rays that pass through the object, and a generator configured to energize the at least one x-ray source. The system includes a controller configured to energize the generator to project a first beam of x-rays toward the object from a first focal spot position of an anode, the first beam of x-rays having a ray traversing a path through the object, acquire imaging data from the first beam of x-rays, position the at least one x-ray source such that a second beam of x-rays projected from a second focal spot position of the anode has a ray directed to traverse the path through the object, the second anode focal spot position different than the first anode focal spot position, energize the generator to project the second beam of x-rays toward the object, and acquire imaging data from the second beam of x-rays.

Methods of and apparatuses for dicing semiconductor wafers, each wafer having a plurality of integrated circuits, are described. In an example, a method of dicing a semiconductor wafer having a front surface having a plurality of integrated circuits thereon involves forming a mask layer above the front surface of the semiconductor wafer. The method also involves laser scribing the mask layer and the front surface of the semiconductor wafer to provide scribe lines in the mask layer and partially into the semiconductor wafer. The laser scribing involves use of a dual focus lens to provide a dual focus spot beam. The method also involves etching the semiconductor wafer through the scribe lines to singulate the integrated circuits.

The invention relates to a lens and a manufacturing method thereof, and in particular relates to a compound polarizing lens and a manufacturing method thereof. The compound polarizing lens comprises a PVA polarizing film, a TAC substrate and a resin lens; the PVA polarizing film is fitted with the TAC substrate to form a compound layer; the compound layer is attached on the inner surface or the outer surface of the resin lens; the PVA polarizing film is arranged between the TAC substrate and the resin lens substrate. The structure of the lens has the advantages of both the traditional TAC polarizer and resin polarizer, but no disadvantages of the two polarizers; in combination with the adjustment of the bending of the lens structure and different numbers of degrees of the resin lens, various single-focus (shortsightedness, astigmatism and the like), dual-focus and multi-focus optical polarizing lenses can be formed conveniently; based on the characteristic of easy setting of the resin lens and the characteristics of convenience in processing and reasonable polarizing structure of the TAC and the PVA, a new structure lens can be formed; the new structure lens has the advantages of the resin lens, the TAC and the PVA, and is capable of meeting the requirements of almost all polarizing lenses.

A double-focusing ultrasonic probe (1) and a sparse array photo-acoustic tomography system. The probe (1) comprises a recessed detection face (11), and a numerical aperture of the recessed detection face (11) in a first direction (13) is greater than that in a second direction (12), so that a signal receiving angle of the recessed detection face (11) in the first direction (13) is greater than that in the second direction (12), and the length of a focused area of the recessed detection face (11) in the second direction (12) is greater than that in the first direction (13), wherein the first direction (13) is perpendicular to the second direction (12).

The present invention provides a network version team intelligence explanation transmitter and system structure and positioning and switching methods. The explanation transmitter includes: a core control unit, and a display module, a power supply module, an infrared module, and a WIFI module respectively connected to the core control unit. module, bluetooth module, audio transmission module and data transmission module. Compared with the previous explaining transmitter, the present invention has more intelligent and diversified functions: it realizes the real-time management and control of the tour guide and tourists by the background center, and the real-time control of the tourists by the tour guide; it has the ability to automatically optimize functions according to environmental changes, double replay mode, and network connection , Automatic reminder of explanation words, real-time recording, online explanation and recording and broadcasting explanation and other functions.

The invention discloses a magnetic deflection mass spectrometer based on a cylindrical electric field analyzer, and belongs to the technical field of instruments. The magnetic deflection mass spectrometer mainly comprises an ion source, a first slit, a cylindrical electric field analyzer, a second slit, a magnetic field analyzer and an ion flow detector; wherein, the cylindrical electric field analyzer and the magnetic field analyzer are connected in a reversed series connection; the magnetic deflection mass spectrometer ensures mutual offset of energy dispersion generated by magnetic fields and electric fields, so that the magnetic deflection mass spectrometer has dual focusing capability of energy and direction, and distinguishing ability is substantially improved.