50results about How to "Reduce FWHM" patented technology

The present invention relates to an MCP unit or the like having a structure intended to achieve a desired time response characteristic, without depending on a limitation imposed by a channel diameter of MCP. The MCP unit comprises the MCP for releasing secondary electrons internally multiplied in response to incidence of charged particles, an anode arranged in a position where the secondary electrons reach, and an acceleration electrode arranged between the MCP and the anode. In particular, the acceleration electrode includes a plurality of openings which permit passing of the secondary electrons migrating from the MCP toward the anode. Further, the acceleration electrode is arranged such that the shortest distance B between the acceleration electrode and the anode is longer than the shortest distance A between the MCP and the acceleration electrode. Thus, an FWHM of a detected peak appearing in response to the incidence of the charged particles is remarkably shortened.

A backlight unit including a light source formed to provide primary light; a quantum dot phosphor excited by the primary light provided from the light source to emit secondary light having a wavelength different from a wavelength of the primary light and disposed to be spaced apart from the light source; an optical agent absorbing light having a specific wavelength from the primary light provided by the light source and the secondary light emitted from the quantum dot phosphor; and a matrix configured to support the quantum dot phosphor and the optical agent. Further, the quantum dot phosphor and the optical agent are randomly mixed in the matrix; and the quantum dot phosphor, the optical agent, and the matrix form a composite.

The present invention provides an all-fiber STED super-resolution microscopic illumination device, which is mainly composed of a laser 1 , a delay unit 2 and a beam generator 3 . Wherein, the beam generator 3 is mainly composed of a section of double-clad optical fiber 4 and a polarization controller 5 . The beam generator 3 can convert the short-wave laser light 6 and long-wave laser light 7 emitted by the laser 1 into Gaussian excitation light 8 and hollow ring loss light 9 respectively, because the spot centers of these two beams of light coincide completely, and the latter passes through After the delay of the delay unit 2, the two beams of light are irradiated onto the fluorescent sample 10 successively, and stimulated emission depletion (STED) occurs, and the fluorescent light 11 with a very small spot is excited, and the final resolution is no longer limited by the diffraction of light. Thereby breaking the diffraction limit and realizing all-fiber STED super-resolution microscopic illumination. The invention has the advantage that the beam generator is highly integrated, making the equipment more flexible and stable.

The present invention discloses a coherent microwave-radiation cold atomic clock; and an ion pump is connected with a vacuum catheter which is connected with a microwave cavity; a light window is fixed in the microwave cavity by quartz glass and three reflective mirrors; a pair of anti-Helmholtz coils and a pair of Helmholtz coils are fixed on the microwave cavity; a pair of rectangular coils arefixed on the microwave cavity; a magnetic shielding system is connected with a vacuum system; semiconductor laser provides captive light and beams of pump-back light; a semiconductor laser on the vertical cavity surface provides a plurality of beams of captive light; a voltage-controlled crystal oscillator is connected with a frequency synthesizers connected with a signal receiver and processor; the semiconductor laser on the vertical cavity surface is connected with the microwave cavity; a photoelectric detector and a microwave-power receiver are connected with the signal receiver and processor connected with the voltage-controlled crystal oscillator as well as the semiconductor laser on the vertical cavity surface. The present invention is characterized in that the structure is compact and the size is small, and has good stability, high accuracy as well as good applicability.

The invention relates to a composite micro-nano structure array on a high light-transmission substrate and a method and application of the same. The invention is characterized in that micro-nano structure arrays of light guide materials on the high light-transmission substrate are taken as supporting structures of fluorescent conjugated polymers for detection. The method comprises: firstly, preparing the micro-nano structure arrays and secondary structure arrays of the light guide materials on the high light-transmission material substrate such as quartz and the like; and secondly, coating the fluorescent conjugated polymers which are sensitive to specified analyte on the surface of the nano structure substrate to form the composite micro-nano structure array which is used for detecting an object. The invention takes the micro-nano structure arrays of different light guide materials as adhesive substrates of the fluorescent conjugated polymers and utilizes the advantages of micro-nanostructures such as large specific surface area, evanescent wave effect, micro resonant cavity action and the like to improve the sensitivity of detection and the signal intensity, prolong the servicelife and improve the reutilization property. The composite micro-nano structure array on the high light-transmission substrate can be applied to the detection of the specificity and high sensitivity of solid, liquid and gas molecules.

The invention discloses a hemispherical microlens and a preparation method thereof. The lens includes at least one lens body (2), and the lens body (2) is: a standard microsphere lens (2') passing through a ball The surface of the center, and part of the spherical surface is cut in parallel on both sides of the surface passing through the center of the sphere. The preparation method is to cut off part of the spherical surface in parallel on both sides of the standard microsphere lens, and then soak it in the second material film layer (4). When the incident light parallel to the optical axis is incident on the partially cut spherical surface of the hemispherical microlens When , the light passing through the cut spherical surface will not participate in the formation of the spot, which is beneficial to improve the half-width of the spot; the light passing through the uncut spherical surface is farther away from the optical axis, forming a focal spot with a longer working distance, It can be applied in far-field parallel imaging / lithography to improve the efficiency of pattern parallel imaging / lithography with feature sizes close to or greater than 300nm.

The invention relates to an electroluminescent device based on an exciplex system with a boron-containing organic compound, wherein the host material includes a first organic compound and a second organic compound, the HOMO energy level of the first organic compound and the energy level of the second organic compound The HOMO energy level difference is 0.2 eV or more, and the LUMO energy level difference of the first organic compound and the LUMO energy level of the second organic compound is 0.2 eV or more. The mixture or interface formed by the two generates exciplexes under the excitation of light or electric field. The singlet energy level of the exciplex is higher than that of the guest material, and the triplet energy level is higher than that of the guest material; and the first organic compound and the second organic compound have different carriers Transport characteristics; the guest material is an organic compound containing boron atoms. The organic electroluminescent device prepared by this method has the characteristics of high efficiency and long life.

The present invention relates to a method for synthesizing a semiconducting nanosized material.