53results about How to "Guaranteed focus" patented technology

The invention relates to a new device used for scribing and pointing of a thin film solar cell. The device comprises a laser, a support pedestal, an automatic focusing control subsystem, an automatic photographing positioning subsystem, an optical platform, an industrial control computer, a power supply and a dynamic galvanometric scanning subsystem. The device is characterized in that a feeding mechanism is arranged on the optical platform, wherein, the support pedestal, the automatic focusing control subsystem and the automatic photographing positioning subsystem are arranged on one side surface of the optical platform. An X-Y-axis galvanometric scanning unit, a Z-axis front focusing unit and the laser are arranged in a beam of the support pedestal. The industrial control computer is respectively connected with the laser, the X-Y-axis galvanometric scanning unit, the Z-axis front focusing unit and the power supply by cables. The invention has the advantages of simple structure, standard process, low production cost, easy mass production, wide scanning range, small focusing spot, good consistency, automatic and accurate positioning, high working efficiency, and the like, thereby being capable of being widely applied in scribing, pointing and other production fields of amorphous silicon solar cells.

The invention discloses a multi-purpose micro voice coil motor which comprises a magnetic yoke body, a first spacer, an upper spring piece, a coil, a coil holder, a permanent magnet, a second spacer, a lower spring piece and a base, wherein the magnetic yoke body and the base are arranged in a mutually matched way, so as to form a sealed space which is used for containing the first spacer, the upper spring piece, the coil, the coil holder, the permanent magnet, the second spacer and the lower spring piece, and the magnetic yoke body is integrally formed by using metal materials. The whole product is covered by the magnetic yoke body made of the metal materials, and the base and the magnetic yoke body are mutually matched to seal the motor product in the magnetic yoke body, so that the strength of the motor is increased; another shell is not additionally adopted to cover the motor, so that the inner space of the motor is enlarged, and the sizes of the permanent magnet and the coil are increased, thereby increasing the driving force of the motor and improving the performance of the motor; and the magnetic yoke body plays multiple roles in the motor, so that the quantity of parts of the motor is further reduced, and the manufacturing process and the assembly difficulty are reduced.

The invention discloses a digital-micro-mirror-device-based fast precise optical focusing enhancement method and system. Region division is carried out on a digital micro mirror device and the digital micro mirror device is divided into two parts evenly; divided areas in the second part are kept to be unchanged and intensity modulation is carried out simultaneously on light beams at all divided areas in the first part at different frequencies, fluorescent light with changed intensities is excited after light beam focusing, and the excited fluorescent light is received and recorded by a photomultiplier; after Fourier transform on a fluorescent light signal, compensation phases corresponding to all divided areas are obtained; the divided areas in the first part are kept to be unchanged d intensity modulation is carried out simultaneously on light beams at all divided areas in the second part to obtain another halves of compensation phases; the divided areas with the phase values smaller than pai are kept and the divided areas with the phase values larger than pai are removed to obtain screened divided areas; and after the digital micro mirror device loads the screened divided areas, the light beams are focused in a sample to form a light spot with the higher central light intensity. On the basis of the optical diffraction principle, the beam focusing speed is increased and the light beam focusing capability is enhanced. A feasible focused light spot generation method can be provided for the non-fiber interpolation type optogenetics and the deep penetration microimaging.

The invention discloses a light path light split unit and a coaxial wire feed cladding head thereof. The light path light split unit comprises a plurality of adjustable reflecting mirrors and at leastone-stage light split reflecting motor, the adjustable reflecting mirrors are distributed all around the light split reflecting motors, the light split reflecting motors can divide incident light beams into a plurality of light split light beams perpendicular to the incident light beams, and each light split light beam focuses on a point through the adjustable reflecting mirrors; and the coaxialwire feed cladding head comprises a cladding head mirror cavity provided with the light path light split unit and a wire feed pipe, the wire feed pipe and collimated laser beams are coaxially arranged, the wire feed extends out of the cladding head mirror cavity, a wire sequentially passes through the wire feed pipe and a wire feed nozzle, and the adjustable reflecting mirrors can adjust the lightsplit light beams to focus on the wire. According to the light path light split unit and the coaxial wire feed cladding head thereof, light split light paths are formed through the light split unit,so that the adjustable reflecting mirrors adjust angles of the light split light beams and the wire, wire molten drops are located right above a base material molten pool in the process of coaxial wire feed, and meanwhile, it is ensured that energy of the light split light beams focusing on the top end of the wire is equally distributed.

The invention provides a wafer surface morphology detection method. The method comprises the following steps: 1, selecting a wafer of a plurality of dies with same whole relative surface morphologies; 2, selecting a first die, aligning the central position of a detection point array at the central position of the first die, and determining the first relative surface morphology of the first die by detecting the first absolute surface morphology of the first die; 3, selecting a second die, deviating the central position of the detection point array from the central position of the second die, and determining the second relative surface morphology of the second die by detecting the second absolute surface morphology of the second die; 4, determining the whole relative surface morphologies of the two dies by merging the first relative surface morphology and the second relative surface morphology; and 5, detecting partial absolute surface morphologies of other dies on the wafer, and obtaining the whole absolute surface morphologies of all the dies through the partial absolute surface morphologies and the whole relative surface morphologies. According to the invention, a "blind spot" problem generated by spaces between each two light spots can be avoided.

The invention discloses a system and method for detecting the vacuum degree of a vacuum device based on a laser-induced breakdown spectroscopy. According to the method disclosed by the invention, a target material in a vacuum chamber is ablated through utilizing laser focusing so as to generate plasmas; a plasma spectrum is measured through focusing of an optical camera lens, light splitting of a spectrograph, and imaging of an image intensifier. The plasma spectrums under different air pressure environments are measured for a plurality of times and a relation between the plasma spectrum and air pressure is analyzed and found. By utilizing the relation, the air pressure of the vacuum chamber can be obtained through measuring the plasma spectrum.

The invention relates to an imaging lens which comprises a first lens group (G1) with positive focal power, a diaphragm, a second lens group (G2) with positive focal power and a third lens group (G3)with positive focal power or negative focal power which are sequentially arranged from an object side to an image side, and the third lens group (G3) is a fixed group. The first lens group (G1) and the second lens group (G2) form a focusing group capable of moving along an optical axis. The imaging lens is arranged according to the limitations, and can realize the characteristics of large aperture, high resolution, low distortion, uniform image quality, large depth of field, good color rendition degree and high contrast ratio.

The invention provides a training system capable of improving vision definition and acuity. The system comprises a fine eyesight training system, a stereoscopic vision training system, a quantitative hyperopia training system and a child amblyopia training system. The stereoscopic vision training system is stereoscopic game training software with keeping of constant-speed movement of an airplane as the characteristic, flying stone is avoided through continuous interference of the head-on flying stone, it is guaranteed that the airplane moves forwards to attract the focus of children, and stimulus is reinforced to promote generation of the stereoscopic sense. Fine eyesight training is based on color impact and dynamic switching, the characteristics of animals, letters and fruits are combined, different training games are formed, the child is taught through training, the training initiative of the children is efficiently mobilized, and the object viewing acuity and definition of the children are improved. According to quantitative hyperopia training, sighting mark sizes in a visual chart are used for copying a batch of number, animal and fruit mixed sighting marks, by means of a manual or automatic mode, different pictures are shown randomly to be distinguished by the children, and the confidence for the children to distinguish objects can be enhanced psychologically.

The invention discloses a heat absorber of a linear Fresnel heat-collecting system.The heat absorber comprises a heat-collecting tube, secondary reflectors and stand columns supporting a heat absorber body, the heat-collecting tube is fixed to lower cross beams connected with the stand columns through supporting rods, and a spring steel piece is arranged between each supporting rod and the corresponding lower cross beam; the secondary reflectors are connected with multiple vertical plates respectively, and the vertical plates are connected with upper cross beams fixed to the stand columns or connected with a frame fixed among the stand columns.According to the heat absorber, the secondary reflectors and the heat-collecting tube are relatively independent in structure, and the heat absorber is simple in structure and convenient to mount and maintain; the supporting mode of the heat-collecting tube is simple and reliable, and it can be effectively guaranteed that the heat-collecting tube is not damaged due to the fact that the heat-collecting tube is heated and expanded; the secondary reflectors and the heat-collecting tube are all mounted on the stand columns, the stand columns are taken as the reference, accuracy of relative positions can be effectively guaranteed, and it is guaranteed that the secondary reflectors focus radiation to the heat-collecting tube.

The invention discloses a camera module and electronic equipment, the camera module comprises a lens assembly, a second prism, a first prism and a photosensitive chip; the second prism and the first prism are both located between the lens assembly and the photosensitive chip, and the second prism and the first prism are oppositely arranged; wherein light passes through the lens assembly, is reflected for at least one time between the first prism and the second prism, and then enters the photosensitive chip. Therefore, the light is reflected at least once between the first prism and the second prism, so that the light path of the light is prolonged, the distance between the lens assembly and the photosensitive chip is reduced on the basis of ensuring the focusing performance of the camera module, and the volume of the whole camera module is further reduced.

The invention discloses a liquid crystal lens zoom processing method and system. The method comprises the steps: obtaining the maximum optical path difference and the minimum optical path difference of a liquid crystal lens, and calculating the optical path difference variation which is the difference value between the maximum optical path difference and the minimum optical path difference; dividing the optical path difference variation into N equal parts according to preset focal length adjustment precision, obtaining N + 1 optical path differences by taking the optical path difference variation/N as a step length, and obtaining a focal length corresponding to each optical path difference; and according to the optical path difference distribution curve corresponding to the focal length, simulating each group of driving voltage corresponding to each focal length so as to establish a focal length-voltage lookup table. The preset focal length and the driving voltage established by the method have high focal length adjustment precision when the target object is observed in a close range, the focal length adjustment precision is reduced along with increasing of the distance between the target object and the human eyes, and the method is more in line with general human eye visual features.

The invention relates to a traveling wave deflector preposition short magnetic focusing femtosecond stripe image converter tube which comprises a tube shell, a cathode disc, a photocathode, an anode, a traveling wave deflector, a short magnetic focusing lens and a fluorescent screen, wherein the cathode disc, the photocathode, the anode, the traveling wave deflector, the short magnetic focusing lens and the fluorescent screen are sequentially arranged in the tube shell along the electronic transmission direction. The photocathode is arranged on the cathode disc. The traveling wave deflector comprises a pair of S-shaped belts which are vertically and mutually arranged parallel to each other. The short magnetic focusing lens comprises a magnetic pole shoe, a galvanical solenoid and a magnetic pole shoe slit, wherein the galvanical solenoid is wrapped inside the magnetic pole shoe and the magnetic pole shoe slit is close to the inlet portion of the short magnetic focusing lens. The traveling wave deflector preposition short magnetic focusing femtosecond stripe image converter tube has the advantages of being conducive to improving temporal resolution, spatial resolution and dynamic range of the image converter tube, and capable of simultaneously reducing difficulty of magnetic lens design, shortening the axial length of the system under the premise of keeping focusing effect and providing possibility for miniaturization of the stripe image converter tube.

The embodiment of the invention provides a pixel unit array and electronic equipment. In the pixel unit array, first pixel units and second pixel units are arranged on a substrate layer, the substratelayer comprises a plurality of pixel areas arranged in an array, each first pixel unit occupies one pixel area, and each second pixel unit occupies M rows and N columns of pixel areas in the array formed by the plurality of pixel areas; wherein M and N are both positive integers, M + N is greater than or equal to 4, and the volume of the sub-pixel is greater than that of the first pixel unit; theshading layers are used for shading incident light, each shading layer comprises two sub shading layers with the same shape, and the sub shading layers are in one-to-one correspondence with the sub pixels; each sub-shading layer is arranged on the corresponding sub-pixel and covers part of the photosensitive area of the corresponding sub-pixel; the two sub-shading layers are symmetrical about thereference plane mirror image, and the reference plane is the plane where the contact surface of the two sub-pixels is located. According to the invention, the focusing performance of the pixel unit array under strong light is improved.

The invention discloses an elastic sheet for a voice coil motor. The elastic sheet comprises a first elastic sheet and a second elastic sheet, the first elastic sheet comprises a first outer frame, a first inner frame and first elastic wires, the second elastic sheet comprises a second outer frame, a second inner frame and second elastic wires, the first elastic wires and the second elastic wires respectively comprise at least six bent arc portions and two straight line portions, the straight line portions and the arc portions are tangent and coupled by means of straight lines and arc shapes, the first elastic wires are in arc transition connection with the first outer frame and the first inner frame, the second elastic wires are in arc transition connection with the second outer frame and the second inner frame, and four groups of the first elastic wires and four groups of the second elastic wires are symmetrically distributed between the outer frames and the inner frames. When the elastic sheet is applied to the voice coil motor, during the operating process of the motor, an average value of an angle formed by dynamic and static axes of a rotor coil holder can be controlled within 0.12 degree, and a lens is fixed on the rotor coil holder so that an angle formed by dynamic and static optical axes of the lens can be minimized during the focusing process of the lens.