336 results about "Phototube" patented technology

A photodetector includes a semiconductor substrate having photo-cells (1a, 1b, 1c). Each photo-cell is provided with a filter layer 20 that transmits light in a wavelength range predetermined for the photo-cell, and a photoelectric converter 17 that generates a signal charge according to an intensity of the light transmitted through the filter layer 20. Thickness (ta, tb, tc) of the filter layers 20 are corresponding to the wavelength ranges predetermined for respective photo-cells. By such a structure, it is possible to provide cost effective photodetectors that can be manufactured without managing materials for pigments and dyestuff for different colors when making color filters.

An optical system for acquiring fast spectra from spatially channel arrays includes a light source for producing a light beam that passes through the microfluidic chip or the channel to be monitored, one or more lenses or optical fibers for capturing the light from the light source after interaction with the particles or chemicals in the microfluidic channels, and one or more detectors. The detectors, which may include light amplifying elements, detect each light signal and transducer the light signal into an electronic signal. The electronic signals, each representing the intensity of an optical signal, pass from each detector to an electronic data acquisition system for analysis. The light amplifying element or elements may comprise an array of phototubes, a multianode phototube, or a multichannel plate based image intensifier coupled to an array of photodiode detectors.

The invention discloses an optical detection device for corona discharge. An atmospheric ultraviolet window band imaging detection optical path thereof comprises a stray light shield, an atmospheric ultraviolet window band ultraviolet lens, an atmospheric ultraviolet window band band-pass ultraviolet filter, an ultraviolet image intensifier, a light cone, a CCD or CMOS area array image sensor, an image processing circuit and a first liquid crystal display which are arranged in sequence. A solar blind ultraviolet band non-imaging detection optical path thereof comprises a total emission mirror, a spectroscope, a solar blind ultraviolet band-pass filter, a solar blind ultraviolet lens, a multiplier phototube, a signal processing circuit module and a second liquid crystal display. The device has the main advantages that the corona detection data is more complete and reliable, and the failure level of corona discharge and discharge degree are convenient to be analyzed.

This invention is a detecting of Roman-Mie dispersion laser atmosphere signal and laser radar. It sets up the radar with the output of double-frequency 532nm and triple-frequency 355nm, launches the 532nm, 15% of the 35nm to the sky and 85% of the 355nm after diffusion, and the two optical paths parallel with the optical path of the receiving telescope, and simultaneously carry out the pitching motion with the receiving telescope; the receiving telescope backward dispersing light, the backward light gets into the telescope, then passes the glare tube, the adjusting field view stop and ocular glass, and the dichroic mirror process, and divides the 407nm, the 386nm and the 532nm scattered light into three beams, and the 532nm scattered light is divided into 15% and 85% beams, and the four beams are respectively received by the multiplier phototube, magnified by the magnifier and collect and process the data. It can detect the level visibility of the atmosphere, the aerosol of the whole troposphere and the vertical outline of winding cloud light eliminating system and the water and air mixture ratio from the ground to the lower part of the troposphere. The detecting error of the level visibility is 15%, the errors of the aerosol light eliminating modulus and the vertical outline of the water and air mixture are 20%.

The invention belongs to the field of application of near-infrared laser, nuclear irradiation, electron and image rebuild in systematic biology and medicine. It is characterized in that high-specificity nuclear species and fluorescent probe are implanted in live animal to realize double mark of muscle deep layer or internal organ tumor cell. The emission signal of nuclear species is checked by sensitive electron-multiplier phototube in array copulation position of scintillation crystal; feeble fluorescent signal generated by visible light or infrared agitation is checked by high quantum yield CCD camera. The two checking systems are orthogonally arranged in the same surface, the live nuclear species and fluorescent signal can be checked simultaneously through rotary image cavity, and double module three dimensional tomography image of small animal can be rebuilt with software algorism. The invention is characterized by multi-image forming modules, abundant information and simple operation.

The invention discloses a system and a method for detecting deficiency of railway fasteners on the basis of laser and vision. The system comprises a laser positioning system, a vision identification system and a control center which are all arranged in a detector below a train body and rightly align to the upper side of the areas where the railway fasteners are located. The laser positioning system and the vision identification system are disposed front to back in a staggered manner along the running direction of the train, and the distance between the laser positioning system and the vision identification system is kept constant. The laser positioning system detects and positions the fasteners, sends out synchronous signals and triggers the vision identification system to work. The laser positioning system completes triangulation ranging measurement by utilizing a one-dimension array formed by high-speed semi-conductor photoelectric tubes to substitute for a linear array CCD (charge coupled device) in a common laser triangulation ranging sensor. By the aid of the system and the method for detecting deficiency of the railway fasteners on the basis of laser and vision, contradiction between detection accuracy and high running speed of the train is overcome effectively, and high-speed detection and identification for the railway fasteners are realized.

The present invention discloses a laser radar transmission-type coaxial transmitting and receiving device. (a) The transmission light path is provided with a laser (1), a concave lens (4), a reflecting mirror (5) which is provided with an angle of 40-50 DEG to the light path, and an aspherical mirror (6) which are provided in sequence. (b) A phototube (12) which has an output end electrically connected with the synchronous triggering input port (141) of the photon counter (14) is provided at the position near the concave lens (4). (c) The receiving light path is provided with the aspherical mirror (6) and the reflecting mirror (5) in sequence. The reflecting light path of the reflecting mirror (5) is provided with a reflecting mirror (7), a diaphragm (8), a focusing lens (9), a color filter (10), a focusing lens (1) and a photoelectric detector (13) which are connected in sequence. The output end of the photoelectric detector (13) is electrically connected with the input port (142) of the photon counter (14). The device of the invention has the advantages of simple structure, easy installation and debugging, low cost, stable and reliable work and convenient maintenance. The device can be widely applied in the laser radar.

The invention relates to a method for controlling dynamic shearing of a hot continuous rolling mill. The method comprises the following steps: (1) a pair of flying shears performs shearing to trigger a photoelectric tube to detect band steel; (2) the actual position of the head of the band steel is calculated; (3) the band steel reaches a target value, and the flying shears move; (4) the flying shears start speed control; (5) the situation that the flying shears enter into a tail part shearing position is detected through angles. According to the method, dynamic shearing control is used for variable speed control under the condition of different band steel, and present situations can be effectively improved, so that the operating speed of different band steel is combined for improvement; according to the inherent characteristics of the band steel, stepless speed regulating control is used, the influence of the position of the band steel, the speed and the shearing preposed rate in the process of control is combined, the control mode of using conversion functions is used, and the dynamic control is realized, so that the shearing precision control of different band steel during steel feed at various speeds is satisfied. The method has extensive promotion prospects for improving dynamic shearing precision.

The invention relates to an ultrathin toughened glass production line and a production method. According to the ultrathin toughened glass production line and the production method, driven wheels are fixed to one of the ends of a plurality of rollers placed on the driving shaft on which a plurality of driving wheels in a glass conveying mechanism are fixed at equal intervals, respectively; the faces of the driven wheels are vertical to the faces of the driving wheels; a plurality of photoelectric tubes in a glass measuring device are transversely and densely distributed below an inlet of a heating furnace body; the signal output ends of the photoelectric tubes are connected with the signal input ends of a photoelectric controller in the glass measuring device; the length and the width of the glass are calculated through an optical-electricity encoder; a plurality of high-temperature gas spraying tubes are arranged at equal intervals or unequal intervals on roller conveying channels in the heating furnace body; wind ports are arranged between the rollers in the roller conveying channels in the heating furnace body; air blasting pipes serving as convex nozzle type channels are arranged in an outlet of the heating furnace body; and the outlets of the convex nozzle type channels are opposite to inserting inlets of a quenching device. According to the ultrathin toughened glass production line and the production method, the cooling medium is replaced, thus greater cooling performance is achieved.

A method and a circuit for controlling light power output and extinction ratio of a light emitting machine applies an APC circuit and back-lighted phototube monitor to alter Ibias and regulate Pav. The method includes setting an initial working point of a light source under the ordinary temperature, designing the allowed variation sphere for Pav, Ibias, Ith, OMA, ER and Imo to utilize APC to make Pav unchanged and monitor other variable quantities, when variables of temperature and time surpass the variation sphere, then other variables are regulated to restore the controlled variables to original spheres, computing Pav, I bias, Ith and SE ordinary temperature set value and regulating Imod to enable OMA and ER at the initial set value. The circuit includes a driver, a digital potentiometer, a microprocessor and a laser etc.

The invention provides a high-power ultra-short laser real-time near field intensity distribution measuring device. An attenuating piece and a beam splitter are sequentially placed in the device in the incidence direction of high-power laser pulses. A micro-lens array, an optical fiber distributor, a delay optical fiber set, an optical fiber beam combiner, transmission optical fibers, a quick phototube and a high-speed oscilloscope are sequentially placed in the transmission direction of the beam splitter. An optical fiber clamping device and reference optical fibers are sequentially placed in the reflecting direction of the beam splitter. The delay optical fiber set and the reference optical fibers are connected to the optical fiber beam combiner to form single output, then the single output is projected to the quick phototube through the transmission optical fibers, electric pulse sequences are formed on the high-speed oscilloscope, and at last, a computer is used for conducting data processing. According to the high-power ultra-short laser real-time near field intensity distribution measuring device, the micro-lens array is used for conducting spatial splitting sampling and optical fiber beam combining time division multiplexing transmission, and various kinds of information such as incident laser beam real-time near field intensity distribution information and pulse time waveform information are obtained through the waveform splicing reconstruction technology. The high-power ultra-short laser real-time near field intensity distribution measuring device is low in cost, simple in structure and convenient to adjust.

This invention relates to one method to test water total organic carbon, which comprises the following steps: a, sending ozone into TOC reacting room and then into water sample reaction room after filtering and isolator; b, the sample going through heating device and flowing into sample reaction room of TOC reactor through flow pump; c, the ozone and sample reacting in the room to generating optical signals; d, collecting and amplifying the signals sent by the electron-multiplier phototube in the TOC reactor and converting into electrical signals into micro computer process system and after signal processing and comparing data with standard relative curve for displaying and printing and outputting test data.

The invention provides a method for positioning underground people by the visible light communication technology. The method is characterized in that the position of people is determined according to different light intensity at different positions between adjacent LED lamps underground and number information of the LED lamps for lighting a laneway. The system for the method is divided into two parts according to the design, namely, a lighting and control system and a people positioning module, wherein the lighting and control system can be used for displaying the position information of people underground in real time and controlling miner lamps; the miner lamps send each number information in a form of a light signal, and PIN photoelectric tubes positioned around the miner lamps are utilized to receive the light information from moving miner lamps; the people positioning module is used for recording and handling with the position information of the people underground and sending out the position information of the people underground through the moving miner lamps carried by the people underground. With the adoption of the method, the people can be positioned, and requirement for lighting underground is also met; in addition, the advantages of being free of radio-frequency radiation and high in safety are brought.

The invention provides an infrared ultraviolet composite flame detector. A log amplifier is utilized to convert current from an ultraviolet photoelectric tube and an infrared photoelectric detector to enable the flame detector to detect tiny signals. A detection method of the flame detector can be further provided, and the tiny signals can be detected by utilizing the method to conduct flame detection.

It is flow injection chemical radiation immune detection pool of silane cross-linking polyose film group which is the following: to combine the sensor and the chemical radiation flow pool to make flow injection chemical radiation immune measurement pool; the chemical radiation flow pool comprises the upper plastic board, down transparent board and silicon rubber cushion ring; to open two paths in the upper plastic board as the entrance and exit of the flow transportation; to etch a groove in its inside to embed immune sensor; the down board is glass or organic glass board with good transparency and directly lay them on the down end of electron-multiplier phototube; to adopt silicon rubber cushion ring in the middle as reaction pool where the immune reaction and radiation measurement happens; the immune sensor structure is to process chitose on the silane load surface and fix the antigen molecule and form the new immune sensor.

The invention discloses a single ultraviolet phototube optical detector for fire detection at high temperature. The single ultraviolet phototube optical detector comprises a power filtering conversion circuit, an ultraviolet sensing circuit, a temperature compensation circuit, a window contamination detection circuit, a CPU (central processing unit) interface circuit, a serial port communication circuit and an indicator light circuit. Information of operation state and the like can be transmitted to an upper computer timely by serial port communication. A single ultraviolet photounit adaptive to ultraviolet light of flame is used, so that infrared radiation interference of a power chamber at high temperature is avoided, fire detection is highly accurate, and anti-false-positive capacity is high. Temperature compensation is performed by CPU sampling and calculation, time detectivity is consistent at wide temperature, and intelligent degree is increased remarkably. The condition that window glass is contaminated by oil in the power chamber can be detected by the window contamination detection circuit and reported to the upper computer.

The invention discloses a portable elementary composition analysis device based on a laser-induced breakdown spectroscopy technology. The portable elementary composition analysis device comprises a laser 1, an optical and control system 2 positioned at the front end of the laser 1, a piezoelectric ceramic driver 3 connected with the optical and control system 2, an optical fiber probe 4, a spectrograph A5 and a spectrograph B6 which are connected with the optical fiber probe 4, a phototube 7 positioned in an irradiation range of the laser, a time delayer 8 connected with the phototube 7, and a spectrograph B6 connected with the time delayer 8, wherein the spectrograph A5 and the spectrograph B6 are connected with an industrial personal computer mainboard 9 through a concentrating box 12; the industrial personal computer mainboard 9 is connected with a display 10; the industrial personal computer mainboard 9 is connected with the time delayer 8; the portable elementary composition analysis device also comprises a voltage converter 13; the voltage converter 13 is connected with a power supply 11, the industrial personal computer mainboard 9 and the time delayer 8; all the parts are integrated in a portable suitcase. The elementary composition analysis with outdoor online in-situ detection requirements can be met, the device can be automatically focused to the surface of a sample to be detected, and the type and content of elements contained in the sample are measured.

The invention relates to an automatic overturning and transmitting device for a cigarette packet, and belongs to the technical field of cigarette packing. The automatic overturning and transmitting device for the cigarette packet is installed at the tail end of a conveyer belt on a C90 packer after packet oil seal packing processes are completed, and is used for 90-degree turnover of a 'YuXi Manor' packet with 16 cigarettes to achieve close attachment of the obverse side and the reverse side of the surface of the brand of the 'YuXi Manor'. The automatic overturning and transmitting device mainly comprises a slide way, a conveying tank, a cylinder, a push rod, a photoelectric tube and the like. The cylinder and the push rod are installed on the base of the C90 packer, the upper portion of the slide way is linked with the tail end of the conveyor belt of the C90 packer, the lower portion of the slide way is linked with the conveying tank, and the photoelectric tube is installed on the side face of the bottom of the slide way. Whenever the photoelectric tube detects that the cigarette packet sliding downwards to a proper position, trigger signals enable a C90 controller to start a solenoid valve to activate the cylinder and bounce the push rod out, the cigarette packet is pushed into the conveying tank, turnover and rank ordering in the conveying tank of the cigarette packet are completed, stacking is facilitated, the cigarette packet can be loaded to a carton conveniently and manually, and packing quality and efficiency are improved. The automatic overturning and transmitting device has the advantages of being simple in structure and convenient to debug, achieving automatic overturning of the packet and smooth transmitting, and the like.

The invention relates to a vehicle driving deviated-track automatic measuring system based on laser scanning. According to the technical scheme, identical opposite-type photoelectric switch sets are respectively arranged a start point, a middle point and an end point of a test area (8), and a light emitting tube and a photoelectric tube of each set of opposite-type photoelectric switches are arranged on two sides of the test area (8). A laser scanning sensor is arranged on the middle position between the middle set of opposite-type photoelectric switches and one adjacent set of opposite-type photoelectric switches. Each set of photoelectric tubes are connected with the adjacent laser scanning sensor through signal wires. The two laser scanning sensors are connected with corresponding interfaces of a test host (10) through data wires. A mobile display terminal (1) is connected with the test host (10) through a wireless local area network. The test host (10) is provided with vehicle driving deviation automatic detection and processing software. The vehicle driving deviated-track automatic measuring system has the advantages that all-weather real-time measurement is available, the precision is high, the automation degree is high, the measuring efficiency is high, the structure is simple, and the mounting and the dismounting are convenient.

The invention relates to a method and a device for measuring fire smoke particle Stokes scattering matrix. The invention is characterized in that the laser transmitted by the laser device enters into smoke particles and scatters after modulated by polaroid and electro-light modulator, after the adjustment by a three-dimensional adjusting device, the fire particles are located on the center of the rotary arm rotation; the rotary arm is fixed on a rotary disk and is driven to rotate around the smoke particles by motor controlled by a computer; an aligning eyelet, a 1/4 wave plate, a polaroid and a electron-multiplier phototube are sequentially installed the rotary arm; the signal measured by two electron-multiplier phototubes go through a phase-lock amplifier and is collected by computer, the electro-light modulator and the phase-lock amplifier are synchronized via signal generator.

To create a method that can be carried out using known broken glass sorting and detecting devices so the advantages of these devices with respect to robustness and interchangeability are retained but enhanced blow-out accuracy compared with the known method is made possible, it is provided that each of the light sources (7) emitting light beams (14) is associated with position data and with the instant of the activity of a light source (7), of which the position data is linked with the detected intensity values when the light beams (14) impinge on the photocell (18) associated with each light source (7) and this linked data is stored, together with the time data at the instant of detection, in a memory, preferably the control unit (10), and this linking data is linked to linking data obtained in the same way at a later instant, to produce a two-dimensional image of the broken glass material flow which is used as a basis for activation of the blow-out nozzles (11) by the control unit (10).

The invention discloses rare earth ultraviolet light transmitting glass. According to the technical scheme, the rare earth ultraviolet light transmitting glass comprises the ingredients in percentage by weight of oxides: 62-65% of SiO2, 3-5% of Al2O3, 22-24% of B2O3, 5-7% of Na2O, 0.1-1% of rare earth, 0.1-1% of Li2O, and 0.1-1% of ZnO. The ultraviolet light transmittance at a UVC (ultraviolet C) wave band can be greater than 89-90%, and the rare earth ultraviolet light transmitting glass can be directly sealed-in with refractory metals (tungsten, tantalum, molybdenum, niobium, hafnium, chromium, vanadium, zirconium and titanium) and kovar alloy. The rare earth ultraviolet light transmitting glass is applicable to manufacturing glass bulbs of a phototube, a photomultiplier tube, an ultraviolet sterilization tube, an ozone generation tube and the like, or light window materials.