34results about How to "Strong optical signal" patented technology

An optical instrument using a plurality of lasers of different colors with parallel, closely spaced beams to stimulate scattering and fluorescence from fluorescent biological particulate matter, including cells and large molecules. A large numerical aperture objective lens collects fluorescent light while maintaining spatial separation of light stimulated by the different sources. The collected light is imaged into a plurality of fibers, one fiber associated with each optical source, which conducts light to a plurality of arrays of detectors, with each array associated with light from one of the fibers and one of the lasers. A detector array has up to ten detectors arranged to separate and measure colors within relatively narrow bands by decimation of light arriving in a fiber. A large number of detectors is mounted in a compact polygonal arrangement by using reflective transfer legs from multiple beam splitters where the transfer legs arise from a polygonal arrangement of beam splitters in a circumference within the circumferential arrangement of detectors.

The invention discloses a method for measuring the content of powdery substantial elements based on dual pluses, characterized in that: a powdery sample is put on a transparent glass pallet, the two pulses are focused onto the bottom of the powder through the glass pallet, the first pulse generates plasmas at the bottom of the powder, the second pulse carries out subsequent heating on the generated plasmas, radiant light signals emitted by the plasmas pass through the glass pallet and are collected by a collecting lens arranged below the glass pallet, and the collected radiant light signals are transmitted to a spectrometer through optical fibers for analyzing. According to the invention, there in no need of further treatment of the powdery sample, thus the speed of on-line detection is raised; the measuring signal fluctuation caused by the unevenness of the powder layer surface is overcome, and the repeatability of the measurement is raised; in addition, the application of the dual pluses allows the plasmas to be more close to a local thermal equilibrium state, thus the raising of the measurement precision is benefited.

The invention discloses a windshield coating film which comprises a first area, and the first area comprises at least one layer of antireflection film used for transmitting light emitted by a laser radar in a vehicle. The coating film in the area is an antireflection film aiming at the corresponding wavelength of the emergent light of the LiDAR, and the antireflection film can enable the reflection influence of the windshield on the emergent light of the LiDAR to be as small as possible, so that more emergent light of the LiDAR is emitted out of the vehicle through the windshield. And meanwhile, the antireflection film can benefit the receiving end of the LiDAR, so that the optical signal returned by the field of view and received by the receiving end is stronger.

The invention belongs to the technical field of optical telemetry, and in particular relates to an optical telemetry system, which includes a collimator lens and an echo collection system located in front of the measuring laser. A beam splitter is set in front of the zoom lens in the coaxial direction, an aiming laser is set under the beam splitter, a reference gas chamber and a reference detector are set above the beam splitter, a part of the visible laser emitted by the aiming laser is transmitted through the beam splitter and enters the reference The gas chamber and the reference detector, part of the visible laser light emitted by the aiming laser is reflected by the beam splitter and coincides with the measurement laser of the measuring laser passing through the beam splitter, and the output window is located in front of the beam splitter.

An image capturing apparatus comprising: a light source, for transmitting incident light to an objective without utilizing any medium besides air, such that the light emits from the objective to generate passing-through light; and a sensor, for capturing an image of the objective according to the passing-through light.

The invention discloses an up-conversion nano material capable of responding to pH value and a preparation method thereof. The method includes: synthesizing a pH-sensitive high molecular material; subjecting the pH-sensitive high molecular material and oleic acid protected up-conversion nanoparticles to ligand exchange to obtain the up-conversion nano material. The up-conversion nano material is used as a substrate and combined with polytertiary amine pH responding polymer to realize pH responding performance of an anti-Stokes shift optical material. In a low-pH water solution, under excitation of near infrared laser, the nano material emits light weakly; after being higher than a specific pH value, light intensity of the nano material can be enhanced by 20 times relative to that when pH value is low; pH conversion interval is only 0.3 pH interval, in other words, the light intensity of the up-conversion nano material can be enhanced by 20 times by only changing proton concentration in a water solution by 2 times. The intelligent-responding up-conversion nano material prepared by the method has high water solubility, high optical signal intensity, low toxicity and sensitive responding performance to pH value of environment.

The invention provides an oil field unattended anti-theft alarm device comprising a laser generator, a plurality of laser transceivers and a laser receiver. The laser generator, the laser transceiversand the laser receiver are arranged around an oil well in sequence to form a laser fence. A laser signal emitted by the laser generator is transmitted to the laser receiver through the laser transceivers in turn. The laser receiver is connected with a GSM photo-taking anti-theft alarm. The laser fence and the GSM photo-taking anti-theft alarm are adopted to prevent crude oil from being stolen. Therefore, oil field unattended anti-theft alarm is realized.

The invention discloses a cathode modulation Faraday anomalous dispersion atom light filter which comprises a hollow cathode lamp, a drive current source, a permanent magnet or an electromagnetic coil, a polarizer and an analyzer. The hollow cathode lamp is connected with the drive current source, the permanent magnet and the electromagnetic coil are placed at the front end and the rear end of the hollow cathode lamp respectively, and spacings are arranged between the permanent magnet and the hollow cathode lamp and between the electromagnetic coil and the hollow cathode lamp. The analyzer is placed at the rear end of the hollow cathode lamp, and the polarizer is placed at the front end of the hollow cathode lamp. The polarization direction of the analyzer is perpendicular to the polarization direction of the polarizer. A magnetic field generated by the permanent magnet or the electromagnetic coil can generate an optical rotation effect on incident light signals, polarization rotating of signal light is achieved, hence, the light signals can be extracted and noise signals can be isolated. The cathode modulation Faraday anomalous dispersion atom light filter is simple and easy to implement, low in cost, high in performance, and stable to work. The number of available atom types is increased, and the obtained atom light filter is of great significance to the fields of laser frequency stabilization, biomedical science detection and the like.

The invention discloses a gas tank of an ultraviolet differential analyzer, which relates to the technical field of gas analysis. The gas tank of the ultraviolet differential analyzer comprises a closed gas tank body, wherein the gas tank body is provided with a light inlet and a light outlet; at least one reflector is arranged inside the gas tank body; and the light entering from the light inletis reflected for at least one time by virtue of the reflector to exit from the light outlet. According to the gas tank of the ultraviolet differential analyzer, a plurality of reflectors are installedin the gas tank, so that the light is reflected for multiple times in the gas tank, the light course is increased, and a purpose of accurately detecting ultralow concentration smoke can be achieved.

The invention relates to a five-path laser radar for a vehicle and a control method of the five-path laser radar. The five-path laser radar comprises a radar controller, and five paths of transceivers in fan-shaped arrangement, wherein each path of transceiver respectively comprises a laser emitting lens tube and a laser receiving lens tube, the center axes of the five paths of transceivers are all crossed at the same point on the same plane, and in addition, the included angle between the adjacent laser emitting lens tubes is identical. When the five-path laser radar is used, the five paths of transceivers are firstly controlled for sequentially emitting and receiving laser pulses, the interval time is identical, then, the passing time t between the emitting and the receiving of each path of laser pulses is calculated, next, the t is subjected to twice screening through a formula that t is greater than or equal to t and smaller than or equal to 1mus and the variance, the threshold and the circulation number group, then, the qualified t average value in the cyclic number group is calculated, and finally, the region of obstacles, the distance between the obstacles and the vehicle and the relative speed are determined according to the average value, so obstacles are avoided. The design has the advantages that the scanning period is short, the structure is simple, in addition, the cost is lower, the anti-shock performance is higher, and the detection distance, the range and the precision can meet the vehicle requirements.

The invention discloses a ceramic scintillator array, which comprises a plurality of ceramic scintillator elements arranged in an array structure; the light-emitting surface of each ceramic scintillator element is rough. The light emitting surface of the ceramic scintillator array of the present invention has higher light emitting efficiency, therefore, the optical signal received by the photon detection device is stronger, which is conducive to improving the final imaging quality; and the improvement of the light emitting efficiency can reduce the The difficulty of receiving and processing the terminal signal reduces the manufacturing cost of the detector matching equipment. At the same time, the invention also provides a preparation method of the ceramic scintillator array. In the method, the surface of the light emitting surface of the ceramic scintillator unit is roughened, thereby improving the light emitting efficiency of the ceramic scintillator array.

A method and apparatus for determining a range of sight which are capable of monitoring and correcting the operability of the instrument. A light emitter directs an emitted light beam to a measurement zone and a light receiver receives a received light beam from the measurement zone. The emitted light beam and the received light beam cross each other in the measurement zone. A deflector deflects at least a portion of the emitted light beam downstream of the measurement zone along a light transmitting path and directs the portion of the emitted light beam into the received light beam at a side of the measurement zone opposite from the light receiver. An optical shutter intermittently closes the light transmitting path in a temporally controlled manner.

The invention discloses clear liquid turbidity detection equipment which is used for a ceramic fiber board preparation flocculation process and comprises: a net front box used for containing cotton pulp, wherein a light source used for emitting light to the inner wall of the opposite side is arranged on the inner wall of one side of the net front box, a light filtering assembly used for filtering light to obtain light with specific wavelength is arranged at the front end of the light source, a first photoelectric receiver and a second photoelectric receiver which are used for receiving light rays with specific wavelengths are arranged on the inner wall of the net front box, a first included angle is formed between the incident direction of the first photoelectric receiver and the emitting direction of the light source, and a second included angle is formed between the incident direction of the second photoelectric receiver and the emitting direction of the light source; and a processing device which is used for obtaining turbidity according to the optical signal and is in signal connection with the first photoelectric receiver and the second photoelectric receiver. The online detection of the flocculation state of the ceramic fiberboard preparation is realized, the detection period is shortened, the turbid phenomenon of the cotton pulp supernatant can be found in time, the influence on the forming is avoided, and the product production efficiency is improved.

The invention relates to a lens structure, in particular to the lens structure which has safe and reliable sealing, realizes the in-situ optical observation under a high-temperature and high-pressure fluid environment (the maximum temperature and the maximum pressure can be 350 DEG C / 20MPa) as well as the application thereof, and solves the sealing and the visual (observation) problems under the high-temperature and high-pressure environment. The lens structure is assembled on an autoclave, and is composed of a pressure cap, a butterfly-shaped washer, a flat washer, a lens, an O-shaped ring, a lens barrel, a lens mount, a graphite washer, a clamping ring and a gland. When assembled, the components such as the pressure cap, the washers, the lens, and the like extend into the autoclave through the lens mount; then the gland is screwed on the lens mount until clamping the clamping ring and the washers tightly. In order to ensure that the lens barrel structure can stably work for a long time under the high-temperature fluid environment and can realize the high-quality in-situ optical observation, a single-crystal sapphire wafer with high high-temperature strength, good corrosion resistance and excellent optical performance is taken as the lens material. Besides, the invention increases the luminous flux through designing the lens barrel into a conical structure, thereby facilitating the realization of the in-situ optical observation.

The invention provides poly(lactic-co-glycolic acid) particles for dual imaging, as well as a preparation method and application of the poly(lactic-co-glycolic acid) particles. The preparation method comprises the following steps: dissolving poly(lactic-co-glycolic acid) in an organic solvent to prepare a solution A with the concentration of 0.005-0.1 g / mL; adding 0.005-0.2 mL of liquid fluorocarbon into the solution A to obtain a solution B; dissolving methylene blue in water to obtain a solution C with the concentration of 0.01-3 mmol / L; dissolving a surfactant in water to obtain a solution D with the quality concentration of 0.2-3%; adding the solution C into the solution B to obtain an emulsion E; dripping the emulsion E into the solution D to obtain an emulsion F; stirring the emulsion F till the organic solvents of the emulsion F are completely volatilized, and carrying out dialysis and purification to obtain the poly(lactic-co-glycolic acid) particles. The prepared poly(lactic-co-glycolic acid) particles can be used as a contrast agent for ultrasonic and photo-acoustic dual-functional imaging for clinical use.

An image sensor, its readout circuit, and a pixel structure. The readout circuit includes: an analog-to-digital conversion circuit coupled to the pixel circuit of the CMOS image sensor, adapted to quantify the output signal of the pixel circuit to obtain a corresponding digital signal; a conversion gain control circuit connected to the pixel circuit The pixel circuit is coupled, adapted to generate a corresponding pixel circuit control signal based on the swing of the pixel circuit output signal to control the conversion gain of the pixel circuit when the signal output by the pixel circuit is an image signal. By applying the above solution, the dynamic range of the image sensor can be improved.