55results about How to "Effective focus" patented technology

The invention discloses a curved-surface bionic compound eye imaging device for a zoom lens array, and belongs to the field of lens bionic compound eye imaging devices according to a curved-surface array. The curved surface of a glass spherical shell of the device is provided with a lens array which consists of single eyes at a plurality of layers, wherein the curvatures and focal lengths of the single-eye lenses at all layers change layer by layer, but all the single-eye lenses are focused on the surface of a unique plane image sensor, thereby enabling the single-eye lens located at the edge of a view field to be able to be effectively focused, and avoiding a defocused state. According to the invention, a sieve-mesh-shaped metal hole array covers the surface of an image sensor, and each sieve mesh is enabled to be corresponding to one independent monocular lens optical path, thereby achieving an effect of segmenting the view field, achieving the integrated jointing of all monocular lens images, and preventing the interference and impact among the adjacent monocular lenses. The device is also high in resolution, is high in instantaneity, is easy to miniaturize, is easy to become light, and is convenient for manufacturing and maintenance.

The invention provides a cylindrical permanent magnet system for focusing and guiding an electron beam. The cylindrical permanent magnet system comprises a first permanent magnet (1), a second permanent magnet (2), a third permanent magnet (3), an inner magnet cylinder (13), an outer cylinder of supporting three permanent magnets, and flanges, wherein the flanges are distributed at two ends of each of the first permanent magnet (1), the second permanent magnet (2) and the third permanent magnet (3); the three permanent magnets are supported and fixed on the outer cylinder and are connected with one another through the flanges; the magnetizing direction of the first permanent magnet (1) points to the axis of the first magnet along the radial direction; the magnetizing direction of the second permanent magnet (2) points to the first magnet (1) along the axial direction; the magnetizing direction of the third permanent magnet (3) deviates from the axis of the third magnet along the radial direction; the three permanent magnets are composed of multiple layers of magnet rings; and each magnet ring is formed by splicing fan-shaped magnetic steel. The dimensions, the positional relationship and gradient change of inner diameters of the three permanent magnets are adjusted, so that the axial magnetic field which meets different magnetic field translocation and uniformity requirements can be obtained.

The embodiment of the invention provides an automatic focusing method, which comprises the following steps: a text in an image range is detected, and a region where the text is located is analyzed and determined; multiple text images of the text in the region are acquired, and a lens focusing position of the region is determined; and according to the lens focusing position of the region, a lens focusing position of the text in the image range is determined. The embodiment of the invention also provides an automatic focusing device, which comprises a detection module, a focusing module and a positioning module. According to the method and the device provided by the invention, the text image can be effectively focused, and accuracy and the rate of extracting the text content in the image can be improved. In addition, based on the text focusing mode, the speed and convenience of shooting the text can be improved, the automatic focusing problem of single-text shooting and multi-text shooting can be solved, man-machine interaction times can be effectively reduced, and use convenience of the user is improved.

The invention relates to an improved method and apparatus for measuring the scattered light signals from a liquid sample. A sample cell for making light scattering measurements, incorporating an exterior surface acting as both a lateral and vertical lens, is described. This unique structure permits greatly improved measurement of the light scattered by molecules and particles suspended in a fluid contained therein or flowing therethrough while illuminated by a fine light beam incident thereon. The resultant lensed structure of the cell, when integrated into a scattered light photometer and combined with suitable apertures before each scattered light collecting detector, reduces significantly stray light from entering each such detector.

An acoustic reflector (10) suitable for use as a reflective target for navigational aids and for location and re-location applications. The acoustic reflector comprises a shell (12) arranged to surround a solid core (16) . The shell is adapted to transmit acoustic waves (18) incident thereon into the core (16) . Within the core the acoustic waves are focused before being reflected from an opposing side of the shell (20) to provide a reflected acoustic wave. A portion of the acoustic waves incident on the shell is coupled into the shell wall and guided within and around the circumference thereof (26) before being re-radiated and combining constructively with the reflected acoustic wave to provide an enhanced reflected acoustic wave.

The invention discloses a gene sequencing chip and a gene sequencing method. The gene sequencing chip comprises a substrate (1), a first optical waveguide (2), a second optical waveguide (3), a metalneedle tip (5), nano-pores (6); the first optical waveguide (2), the second optical waveguide (3) and the metal needle tip (5) are all formed, in T-shaped relative distribution, on the substrate (1);the first optical waveguide (2) and the second optical waveguide (3) are oppositely positioned; the nano-pores (6) are arranged in contact areas of the first optical waveguide (2), the second opticalwaveguide (3) and the metal needle tip (5), and penetrate through the substrate (1); one ends of the first optical waveguide (2) and the second optical waveguide (3) are both three-dimensional taperedstructures; the first optical waveguide (2) and the second optical waveguide (3) are opposite to each other by the ends with the three-dimensional tapered structures; a light source coupler (7) is arranged, on the other end opposite to the end with the three-dimensional tapered structure, on the first optical waveguide (2); and a first signal collector (8) is arranged, on the other end opposite to the end with the three-dimensional tapered structure, on the second optical waveguide (3). The gene sequencing chip and the gene sequencing method improve detection efficiency of base monomers, thereby reducing cost with integration level and stability of the chip system improved; moreover, data volume is reduced so as to have collection rate improved.

The invention discloses a full-image focusing method and a camera. The full-image focusing method comprises the following steps of: according to preset rules, partitioning a full image into a plurality of first focusing areas; respectively carrying out focusing on each first focusing area to obtain a first lens running distance value of each first focusing area; according to each first lens running distance value, respectively running a lens and shooting a first picture; and selecting the corresponding first focusing area on each first picture, splicing the first focusing areas into a second picture and outputting the second picture to a display screen. According to the full-image focusing method provided by the invention, the full image is partitioned into a plurality of focusing areas, each first focusing area is respectively focused and the pictures are shot, and the pictures are cut to be spliced into the integral picture, so that each area of the full image is effectively focused.

The embodiment of the invention discloses an image processing method which comprises the steps of: by utilizing a laser distance measuring sensor of a terminal, detecting a distance between a space position of each of N regions which are pre-divided in a preview image shot by a camera of the terminal and the camera so as to obtain N distance values, wherein the N is an integer greater than 1; determining out a minimum distance value in the N distance values; and using the region corresponding to the minimum distance value as a focusing region of the preview image. The embodiment of the invention further provides a terminal. By the image processing method and the terminal which are disclosed by the embodiment of the invention, rapid focusing can be carried out; moreover, the laser distance measuring sensor is adopted to carry out focusing, and thus, the focusing process is not influenced by light and focusing can be effectively carried out in a dark visual environment.

The invention relates to a lighting device with a microstructure brightness enhancement film, which includes a housing, a plane light source, a microstructure brightness enhancement film and a reflector. The microstructure brightness enhancement film is fixed on the housing and located above the plane light source. The brightness enhancement film is a light-transmitting thin sheet with a top surface, a bottom surface and a Fresnel light-concentrating part. The cross-sectional shape in the vertical direction is zigzag and changes periodically from the center to the outer periphery more than twice; in this way, the light can be effectively focused, the luminous efficiency can be improved, the luminous intensity of the center can be increased, and the loss of the plane light source can be reduced. The number of OLEDs is used, thereby reducing the manufacturing cost, and the practicability is excellent.

The invention discloses a peep-proof film applicable to a curved screen. The peep-proof film comprises linear Fresnel structures and a peep-proof film, wherein two sides of the peep-proof film are rhomboid micro blind window monomers, wherein light is adjusted to parallel light perpendicular to a main screen by lenses of the linear Fresnel structures; a plurality of rhomboid micro blind window monomers are arranged on two sides of a film body micro blind window film of the peep-proof film, and the size of an area formed by the plurality of rhomboid micro blind window monomers is fit with the arc size of the curved surface of the screen; one linear Fresnel structure is correspondingly arranged under each rhomboid micro blind window monomer, scattered light of the curved screen passes through the linear Fresnel structures, and further passes through the rhomboid micro blind window monomers, to be formed into light emitted in parallel by a flat screen. According to the peep-proof film, light rays of the curved screen can be effectively concentrated to a user vision area.

The invention provides a preparation method of a capillary tube SERS substrate and an SERS capillary tube. The preparation method comprises: a 1-mL isopropanol solution with the mass fraction of 70% is added into a metal nanoparticle conductive slurry and ultrasonic processing is carried out under a a dark room condition for 15min to obtain a silver metal nanoparticle ink mother solution; the silver metal nanoparticle ink mother solution is diluted by using 70% of isopropanol solution to obtain nanoparticle precursor ink; and a polygonal capillary tube is immersed into the nanoparticle precursor ink for 5 to 30min, residual nanoparticle precursor ink in the polygonal capillary tube is removed, one side of the polygonal capillary is quickly placed on a preheated heating platform at a temperature of 135 DEG C and suface contact with the heating platform is kept, and cooling is carried out and then an SERS capillary tube is obtained. According to the SERS capillary tube, the flat laser irradiation can be obtained and effective focusing and uniform signal acquisition are realized; and the capillary tube has advantages of higher excitation efficiency and simple and rapid operation.

The invention discloses a constant magnetic field structure which is characterized by comprising a first magnet and a second magnet oppositely arranged. A distance is reserved between the first magnetand the second magnet, and a constant magnetic field area for containing a workpiece is formed between the first magnet and the second magnet. The constant magnetic field structure can effectively focus strip-shaped electron beams such as a traveling wave tube, a klystron and a backward wave tube, and can also focus cylindrical electron beams and the like.

The invention provides a sample preparation method for ToF-SIMS test of a hollow fiber membrane, and belongs to the technical field of ToF-SIMS test. The method comprises the following steps: cuttinga hollow fiber membrane along the axial direction, flattening and pasting the hollow fiber membrane on a glass sheet, and expanding a to-be-tested surface by adopting a paraffin block. According to the method, the problem that the result is not credible due to the fact that the diameter of the hollow fiber membrane is too small, ToFSIMS cannot be effectively focused and the test signal is too pooris solved, the accurate and credible ToFSIMS test of the hollow fiber membrane is successfully achieved, the good test signal is obtained, operation is easy, and the method can be used for hollow fiber membrane surface filter cake layer composition analysis, membrane material composition analysis and the like.

The invention provides a method and a device for aggregating applications. The method comprises the following steps: storing each application of each different system and the corresponding interface access path; determining each target application in different system and the parameter value as requirement according to the current application demand; finding out each target interface of each target application in different system according to the interface access path corresponding to each target application; transferring the determined parameter values to each target interface to generate each interface to be aggregated; aggregating each interface to be aggregated into one application interface, and displaying. With the adoption of the method, the interface contents of various applications can be effectively concentrated to be displayed.

The invention discloses a laser-micro-engraving process and a laser-micro-engraving machine to overcome the problem of partial missing of engraved patterns caused by cell phone signals. According to atechnical scheme in the invention, the laser-micro-engraving process comprises the following steps: step 1, starting the laser-micro-engraving machine, subjecting a pattern and characters to be engraved to editing, and in virtue of point cloud calculating software, setting corresponding parameters according to a product and requirements and carrying out point cloud calculation on the pattern andthe characters; step 2, placing a to-be-engraved object on a platform and allowing the laser head of the laser-micro-engraving machine to be aligned with the to-be-engraved object; step 3, placing a metal screen onto a platform, wherein the metal screen sleeves the laser head and the to-be-engraved object; and step 4, starting the laser head. The laser-micro-engraving machine comprises a machine seat; the platform is fixed on the machine seat and sleeved by a rotary ring; the machine seat is provided with a power source driving the rotary ring to rotate; the rotary ring is provided with the metal screen; and the metal screen is provided with a through hole allowing the laser head to be inserted, so negative influence of cell phone signals on laser-micro-engraving is reduced.

The invention discloses a plasma activity enhancement method and a plasma generation device. The invention has a core that a focusing unit which carries out focusing on light wave corresponding to plasma is added or designed on the plasma generation end of the plasma generation device; the focusing unit is set as a concave reflecting mirror; the inner side of the reflecting mirror can be coated with a metal film or a dielectric film; the generated plasma is focused in an area near the focal point of the reflecting mirror under the function of the reflecting mirror, and energy loss caused whenthe plasma is generated and radiated to the periphery is reduced; meanwhile, the plasma which is focused in a focal point area is large; and a mutual collision probability of photons, atoms, moleculesand the like contained in the plasma is large, and physical chemistry reaction among all plasma is accelerated so as to enhance the activity of the plasma.

The invention is suitable for the technical field of glass compression molding, and discloses optical precision aspherical glass compression molding equipment. The optical precision aspherical glass compression molding equipment comprises a frame, a mold device, a heating device and a driving device, wherein the mold device is arranged in the frame; the heating device is arranged in the mold device; the driving device is arranged below the mold device, and is used for driving the mold device to realize mold assembly or mold sinking; the heating device comprises an internally-hollow quartz cover, a radiation screen arranged on the quartz cover in a sleeving way, a plurality of layers of heating tubes which are annularly arranged on the outer side of the quartz cover and are fixed to the radiation screen, a heat insulating layer arranged on the outer side of the radiation screen in a sleeving way, and a furnace wall arranged on the outer side of the heat insulating layer in a sleeving way and is fixed to the heat insulating layer. The heating device has high stability and reliability, and can be used for heating glass blanks rapidly; the radiation screen of the heating device reflects medium-long waves of infrared thermal radiation emitted by the heating tubes, and heat energy can be gathered together through the arc shape of the radiation screen; heat exchange among interfaces can be reduced effectively through the heat insulating layer of the heating device.