658results about How to "Observe clearly" patented technology

The invention relates to a small and light wide-field free-form surface prism HMD optical system, which belongs to the field of optical system and device design and is applied to the virtual reality and augmented reality field. The invention comprises a free-form surface prism with three optical surfaces, and a micro-image display; the free-form surface prism is made of plastic glass materials with the refractive index greater than 1; the three free-form optical surfaces are concave surfaces, which meet one of the three surface-type equations, and the location relationship of each surface meets three condition equations; the incident angle formed between the widest-field upper edge rays emitted by an LCD and the second free-form surface meets the total reflection conditions; and an image source element is an LCD of 0.61 or 0.59 inches. The small and light wide-field free-form surface prism HMD optical system is light and compact and has the advantages of good aberration correction and high light energy utilization rate; the optical system enables the observer to see clear images in a wide field of view, and the displayed images do not have apparent brightness attenuation and can not easily cause visual fatigue to the observer.

A diagnostic / treatment instrument such as a handpiece equipped with a dental treatment tool, etc. is provided with a light radiating unit that can distinctively detect a dental lesion, to facilitate the treatment of the lesion. A light source for emitting light that can distinctively detect the lesion is mounted near the head of the handpiece to which a diagnostic / treatment tool can be attached. The light emitted from the light source illuminates an area forward of the diagnostic / treatment tool. Alternatively, the light source comprises a plurality of light-emitting devices which are arranged around the periphery of the forward end of the handpiece head in such a manner as to encircle the diagnostic / treatment tool, and radiates light to illuminate the area forward of the diagnostic / treatment tool. When an oral cavity is illuminated with the light, a clinician can observe reflected fluorescent light by using a filtering function that passes the fluorescent light, and thus the clinician can perform the treatment while checking the lesion.

A blood coagulation system analysis device capable of analyzing a blood coagulation system with high accuracy, and a method and a program for analysis of a blood coagulation system are proposed.The blood coagulation system is observed as a temporal change in permittivity before the viscoelasticity manifestation timing (timing at which blood starts to clot from the viewpoint of viscoelasticity (in greater detail, timing at which active polymerization of fibrin monomers starts)). A permittivity of blood which is positioned between a pair of electrodes is measured at predetermined time intervals after the anticoagulant effect acting on the blood is ended, and from the measurement result, a degree of the action of the blood coagulation system is analyzed.

The invention discloses an ink cartridge for an ink-jet printer, which comprises a cartridge body, a protective cover capable of moving relative to the cartridge box under the action of pressure, an ink cartridge detection mechanism for detecting the ink cartridge and an ink surplus detection mechanism for detecting the surplus of ink, wherein the ink cartridge detection mechanism comprises a first detection component matched with a first sensor on the printer and a second detection component matched with a second sensor on the printer, the second detection component comprises a shielding part, a stationary shaft arranged on the cartridge body, a movable shaft arranged on the protective cover, and a shielding part position recovery part, and the shielding part is connected with a rotating shaft of the stationary shaft, rotates around the stationary shaft under the pressure of the movable shaft, and can recover the position along with the protective cover under the action of the shielding part position recovery part. Finally, the light emitted by a transmitting part of the second sensor is still shielded by the shielding part, but not a movable lever with light-transmitting middle part of the ink surplus detection mechanism, thereby being not affected by the surplus of the ink.

Clearly observing the state of an examination site is made by sufficiently suppressing the influence of residues. Fluorescence observation apparatus includes: a light source emits excitation light for irradiating the vicinity of an examination site; a fluorescence information acquisition unit acquires information about fluorescence emitted from the vicinity of the examination site through the irradiation with the excitation light from the light source; a residue fluorescence information acquisition unit acquires information about fluorescence emitted from residues selectively dyed with a fluorescent dye, through the irradiation with the excitation light from the light source; and a fluorescence information correction unit generates fluorescence information about the examination site in which the fluorescence from the residues is suppressed, based on the fluorescence information from the vicinity of the examination site, acquired by the fluorescence information acquisition unit, and the fluorescence information from the residues, acquired by the residue fluorescence information acquisition unit.

Disclosed is a three-dimensional imaging method for a Polarimetric Interferometric Synthetic Aperture Radar (Pol-In-SAR) based on the polarimetric data integration, which belongs to the Polarimetric radar Interferometric measurement data processing technology field. The data is read in and two scattering vectors k1 and k2 are structured to each scattering unit; eigenvalue decomposition is performed on the matrix K1 K1-K2 K2 and three eigenvalues are obtained: Lambada1>0, Lambada1>0 and Lambada3=0; values of formula(1) can be respectively calculated so as to determine which condition the value belongs to; if in condition 1, w=w<(1)> can be calculated according to formula (6); if in condition 2, w=w<(2)> can be calculated according to formula (14); and then Phi[s]=arg(wk1k2w)can be calculated. An enhanced complex image can be obtained according to formula 3); the matrix Omega12=> is calculated; and then Phi[m]=arg(w[Omega12]w) can be calculated according to formula 22). The flat-earth effect is removed on the obtained whole phase map (single view or multi-view); and phase unwrapping is performed by using branch-cut algorithm. The invention has wide application range, and the calculating time is smaller than that of the interference optimization method; and the integrated phase quality is better than that of interference optimization method, the phase quality can be always enhanced despite the original signal level, thereby establishing a fine basis for generating accurate digital elevation model (DEM) in the future.

The present invention relates to a novel, small-scale, electrophoretic separation system based on photodefined polymers and electrode-defined sample injection. Diffusion and displacement coefficients may be modified by varying the gel concentration, the intensity of the incident UV radiation and the temperature at which the gel is run. The device is an major advance over current technology since it provides for a significant reduction in size of the micro-electrophoresis apparatus and a significant cost savings.

The invention provides a positioning and splicing device of an indicating grating, belongs to the technical field of photoelectric measurement, and aims to conveniently and accurately position the indicating grating before the indicating grating is spliced on an indicating grating carriage. The device comprises a supporting mechanism, a charge coupled device (CCD), an objective lens, a guide rail mechanism, a left pressing needle, a right pressing needle, a regulating mechanism, a light source, the indicating grating and a main grating, wherein the lower end of the CCD is connected to the objective lens; the guide rail mechanism is arranged below the objective lens and is fixedly arranged on the regulating mechanism; the left and right pressing needles are fixedly arranged on the guide rail mechanism; the indicating grating is pressed on the main grating by the left and right pressing needles; the main grating is fixedly arranged on the regulating mechanism; the regulating mechanism is fixedly arranged on a middle seat of the supporting mechanism; the light source is arranged at the bottom end of the supporting mechanism; and light emitted by the light source irradiates on the main grating and the indicating grating and is then imaged on the CCD via the objective lens. The positioning and splicing device is applied to the structure mounting process of a grating ruler, and the reliability of a grating ruler measuring mechanism is guaranteed.

Provided is a blood flow rate imaging device that can automatically distinguish an artery and a vein from a blood flow rate obtained on a time series blood flow map. A blood flow rate imaging device of the present invention includes a laser beam irradiation system (1) that irradiates a laser beam to a biological tissue that has a blood cell, a light receiving system (2) that has a light receiver (5) including many pixels that detect reflected light from the biological tissue, an image capture section (12) that continuously captures a plurality of images for a predetermined time of one or more cardiac beats on the basis of signal from the light receiver (5), an image storage section (15) that stores a plurality of images, and an arithmetic section (16) that calculates a blood flow rate within a biological tissue from the time variation of the output signal of each pixel corresponding to a plurality of stored images, wherein the above arithmetic section has a detecting section that detects an artery and a vein from a plurality of images of the above one or more cardiac beats and displays an arterial pulse part and a venous pulse part on the blood flow map.

The invention relates to a tissue culturing monitoring method based on image mist elimination. The tissue culturing monitoring method includes the steps of obtaining real-time monitoring image information and real-time environment information of a tissue culturing monitoring point in a tissue culturing room; preprocessing the real-time monitoring image information to obtain a preprocessed image, and then obtaining a dark channel image of the preprocessed image; carrying out bilateral filtering on the dark channel image, calculating an atmospheric optical value A according to the bilaterally-filtered dark channel image, and calculating a transmittance predicted value according to the real-time monitoring image information; obtaining a mist-eliminated monitoring image according to a mist image forming model; sending the real-time monitoring image information, the real-time environment information and the mist-eliminated monitoring image to a user. The invention further discloses a tissue culturing monitoring system based on image mist elimination. By means of the tissue culturing monitoring method and system, automatic real-time collecting is achieved in the whole process, and the labor cost is greatly saved; preprocessing and mist elimination processing are carried out on obtained tissue culturing real-time monitoring information at the server side, and therefore the influences of mist on a tissue culturing monitoring picture are reduced as far as possible.

The invention belongs to the technical field of nano materials, and particularly relates to a graphene oxide for electrochemical reduction and a preparation method of graphene. The method comprises the following steps: dissolving graphite oxide in deionized water, and carrying out ultrasonic peeling to obtain a graphene oxide solution; cleaning electrodes and a glass container; adding the graphene oxide solution into the glass container; connecting one end of a copper conductor with cathode and anode materials, putting the electrodes into the graphene oxide solution, and respectively connecting the other end of the copper conductor with positive and negative poles of a direct-current stabilized voltage supply; switching on the direct-current stabilized voltage supply, wherein the voltage is controlled at 10-50V, and the temperature is controlled at 25-90 DEG C; and carrying out electrochemical reduction for 1-60 minutes, thereby obtaining the graphene. The graphene prepared by the method provided by the invention has the advantages of high quality; and the method is simple to operate, and has the advantages of low cost, high safety, no pollution, high-efficiency and the like.

The invention discloses an air-cooling device for a printing head of a 3D (three-dimensional) printing machine. The printing head is arranged at a slide rod of the printing machine in a sleeving manner by lug rings and axially slides; the air-cooling device is integrated on the printing head; a wire conveying mechanism is arranged in a seat housing cavity body of the printing head; a cooling fan aligned to the wire conveying mechanism is arranged on one axial side of the seat housing cavity body; a printing head nozzle is formed in the lower part of the seat housing cavity body; the seat housing cavity body is provided with air guide pipelines leading to the printing head nozzle. The air-cooling device improves heat dissipation of the printing head of the printing machine and enables occupied working space of the printing head to be further reduced, thereby being favorable for improving the portability of the folding-type 3D printing machine.

An X-ray photography apparatus including: a turning arm that supports an X-ray generator and an X-ray detector while the X-ray generator and the X-ray detector are opposed to each other so that a head of a patient can be interposed therebetween; and a moving mechanism that turns the turning arm about a turning axis with respect to the head and moves the turning arm in a direction perpendicular to the turning axis with respect to the head. The X-ray photography apparatus further includes: an image processor that generates an X-ray image based on an electric signal output from the X-ray detector; and a photographic region designation receiving part that designates part of a row of teeth along a dental arch as a pseudo intraoral radiography region. The image processor generates plural tomographic images by applying convolution and filtered back projection to X-ray image data obtained by pseudo intraoral radiography.

The invention discloses an observation method of a Ti-Ni alloy metallographic structure, comprising the following five steps: 1. machining a metallographic observation plane; 2. grinding; 3. mechanically polishing; 4. etching; and 5. observing. The surface of a mechanically-polished sample is etched by an etchant solution, avoids forming an oxidation film as the paraboloid is oxidized, and avoids generating a pseudo structure because of etching. The observation method in the invention is easy to operate, in non-hazardous, can clearly show the Ti-Ni alloy metallographic structure and does not need any special equipment.

The present invention relates to a novel, small-scale, electrophoretic separation system based on photodefined polymers and electrode-defined sample injection. Diffusion and displacement coefficients may be modified by varying the gel concentration, the intensity of the incident UV radiation and the temperature at which the gel is run. The device is an major advance over current technology since it provides for a significant reduction in size of the micro-electrophoresis apparatus and a significant cost savings.

A light irradiating means capable of specifically extracting the affected part of a tooth is provided to a treating instrument such as a hand-piece provided with a dental treating tool or the like to facilitate the treatment of the affected part. A light emitting light source able to specifically extract an affected part is provided in the vicinity of a hand-piece-head for permitting the mounting of a treating tool thereto. Light emitted from the light source irradiates a portion in front of the treating tool. Or, a light source includes a plurality of light emitting elements and is disposed at the peripheral edge of the tip end of the hand-piece-head so as to surround the treating tool to thereby irradiate a portion in front of the treating tool. When the interior of an oral cavity is irradiated with the light, the treating operator can observe it by using a filter function for its fluorescent reflection light to thereby able to confirm the affected part while treating it.

An aperture stop 10A includes a filter area 1 formed on a flat-plate substrate 23, and an aperture area 2 formed inside the filter area 1. The filter area 1 transmits infrared light and reduces or blocks the transmission of visible light. The aperture area 2 transmits light in the wavelength range corresponding to fluorescent light from an observed area of a subject and light in the wavelength range corresponding to illumination light to the subject. The aperture stop 10A does not reduce the light in the wavelength range corresponding to fluorescent light from the observed area of the subject, but variably reduces visible light since the area of the aperture area 2 is variable. Therefore, it becomes possible to simultaneously and clearly observe, with a simple method, a subject image formed by illumination light in the visible light band and an observed image formed by weak fluorescent light from the observed area of the subject in the infrared light band.

The invention provides a dust removal and suction device for a case. The dust removal and suction device comprises a brush body, a connecting hose and a dust removal box. The upper portion and the lower portion of soft hair at the front end of the brush body are respectively provided with a strip vent communicated with a cavity in the brush body. One end of the connecting hose is communicated with the cavity in the brush body through the tail end of the brush body, and the other end of the connecting hose is communicated with an air inlet in one end of the dust removal box. The device is mainly used for cleaning and dust removal of the internal of the case or a portable machine body, dust is brushed off through the soft hair at the front end of the brush body, when the connecting hose is communicated with the air inlet of the dust removal box, an air blower in the dust removal box is started, suction is achieved through the vent in the brush body, dust brushed off by the soft hair can be sucked, it is avoided that a large amount of dust spreads in air, and meanwhile cleaners can clearly observe the dust removal situation.

The invention relates to a wind farm time-frequency domain modeling method based on empirical mode decomposition (EMD). The method comprises the steps that obtained measured data of wind farm power is processed through EMD into a plurality of intrinsic mode functions (IMF) after being subjected to normalized filtering processing, hilbert transform is carried out on the IMFs respectively to generate corresponding time-frequency spectra, then the time-frequency spectra are respectively fitted, the fitting results are respectively subjected to hilbert transform to obtain time domain expressions, and the time domain expressions are summed to obtain a wind farm analytical model containing various fluctuation characteristics. According to the modeling method disclosed by the invention, the analytical model established in a time-frequency domain modeling means contains the typical fluctuation characteristic information of the wind farm, and the model is used for simulating the impact analysis of wind farm fluctuation with nonstationary randomness on network voltage and frequency.

The invention discloses a full hydraulic automatic dung cleaning robot, and belongs to the technical field of dung cleaning mechanical equipment. According to the full hydraulic automatic dung cleaning robot, a front wheel is provided with a steering gear; the back of a base plate is connected with a crawler-type back wheel; the crawler-type back wheel is connected to a driving system and is driven by the driving system; the front end of the base plate is provided with a concave dung scraper; the dung scraper is provided with a hydraulic control system for controlling vertical movement; the front end on the upper part of the base plate is provided with a visualization system; the steering gear, the driving system, the hydraulic control system and the visualization system are connected to an electronic control system; and the electronic control system is in wireless signal transmission connection with a computer to realize remote control and monitoring within 200 meters. The full hydraulic automatic dung cleaning robot can remotely control to clean dung and monitor livestock in 24 hours, working conditions of livestock breeding managers are improved, a good environment for the growth of the livestock is created, diseases are reduced, the meat quality of the livestock is improved and the like.

The invention is about the display method for waveform of digital oscillograph and the digital oscillograph. The invention is to collect the external dummy signal and transfer it to digital signal; receiving the digital signal and storing it as the digital signal data; receiving external response and generating the first window and second window data, according to which it gets the first and second window pantograph ratio; reading the digital signal data and pantograph the data according to the ratio to generate the first and second displaying data; the waveform and / or data corresponding to the first displaying data is displayed on first window; the second data is displayed on second window. So it can display the waveform on two windows in different time to make the oscillograph intuition and convenience.

The invention relates to an intelligent terminal-based virtualized fitting method which is applied to a virtualized fitting system formed by an intelligent terminal, a third party fitting platform and at least one apparel design terminal; an apparel factory sends apparel parameters of all apparel samples to the third party fitting platform, the third party fitting platform builds apparel sample virtual fitting models, a client sends own actual posture parameters to the third party fitting platform, and the third party fitting platform builds a human body virtual fitting model of the client after building a human body three dimensional sample model in advance; recommended apparel samples matching with the actual posture parameters of the client, corresponding recommended apparel sample virtual fitting models, all stored apparel sample parameters and the apparel sample virtual fitting models are obtained after screening operation and then sent to the intelligent terminal of the client; the client puts favorite apparel sample virtual fitting models on the human body virtual fitting model of the client on the intelligent terminal, and whether dressing effects are satisfying can be observed.

The invention relates to a positioning device of an absolute type grating ruler photoelectric receiving device, belongs to the technical field of photoelectric measurement, and aims at solving the problems of poor reliability and low precision of a grating measuring mechanism in the prior art. The positioning device comprises a support structure, a device adjusting mechanism, an indicating grating adjusting mechanism and a CCD (charge coupled device), wherein the support structure consists of a base, a middle seat, an upper end support frame and a connecting rod, the device adjusting mechanism is fixedly arranged on the upper end support frame, and realizes the fixation and the adjustment of the photoelectric receiving device, the indicating grating adjusting mechanism is fixedly arranged at the middle seat and realizes the fixation and the adjustment of an indicating grating, the CCD is fixedly arranged on the base, the upper end of the CCD is connected with an objective lens, the relative positions of the photoelectric receiving device and the indicating grating are observed through the objective lens and the CCD, and further, the bonding is realized. The mechanical fine adjustment is adopted, in addition, the imaging of the CCD in a computer is utilized for observation, the operation is convenient, the observation is clear, the adjustment time is greatly reduced, and the reliability and the precision of the whole grating ruler measuring mechanism are also improved.

The invention provides a design method of a combination instrument, the combination instrument and a vehicle. The design method includes the following steps: obtaining an eye ellipse according to a vehicle model design hard spot, wherein the eye ellipse is located in a visible area of the combination instrument; adjusting the curvature radius and / or installation angle of a face cover of the combination instrument to make the curvature center of the face cover to be located above the visible upper limit of the visible area; selecting an incident point above the eye ellipse; adjusting the brim of the combination instrument to make reflected rays formed after the face cover of the combination instrument reflects the incident rays which are formed between the incident point and the lowest point of the face cover of the combination instrument are blocked by the brim of the combination instrument. The design method enables drivers to clearly observe information on dial plates, and accordingly avoids complaints from users and improves user experience.

The invention relates to metallographic corrosive liquid used for 304L stainless steel and a preparation method and a corroding method thereof. The metallographic corrosive liquid is prepared from 4-6.5 g of ferric trichloride, 10-20 ml of concentrated hydrochloric acid and 50 ml of water, wherein concentrated hydrochloric acid is analytically pure, and the mass fraction is 36-38%. The metallographic corrosive liquid is suitable for corroding 304L stainless steel metallographic specimen under different machining states and can corrode 304L stainless steel in a cast state or 304L stainless steel in a hot working state or a cold working state or 304L stainless steel metallographic structures which are subjected to heat treatment.

The invention discloses a method for image scaling and a pair of AR (Augmented Reality) glasses based on the method. The method comprises the following steps of S0 receiving image information and entering the step S1; S1 carrying out regional division and numbering on a screen of the AR glasses and then entering the step S2; S2 selecting an image region which needs amplification, showing the image region independently, screening out other image information and entering the step S3; S3 magnifying and displaying the selected image region, if continuing to amplify, returning to the step S2, if switching to a standby state, entering the step S4; and S4 shrinking the currently displayed image and moving to a corner of the screen of the AR glasses. According to the method provided by the invention, virtual and reality scenes are combined to facilitate people work and bring good life experience to people.

A method for evaluating an electrophotographic photoconductor in terms of filming occurrence is provided that comprises irradiating UV rays having a wavelength of 200 nm to 420 nm onto the electrophotographic photoconductor and measuring fluorescence emitted from the electrophotographic photoconductor.

The invention discloses a low signal to noise ratio image reconstruction method and system. Implementation of the low signal to noise ratio image reconstruction method includes the steps: averaging an original image to obtain an average image according to the phase and the direction; separating the average image according to the phase difference to obtain a separate image, and performing normalization processing on the separate image to obtain a normalized separate image; calculating the illumination optical vector estimated by a normalized separate image cross-correlation function; translating different normalized separate images according to the estimated illumination optical vector, and estimating the modulation intensity and the initial phase of the illumination optical vector; decomposing the original image to obtain a decomposed image, and according to the estimated illumination optical vector, performing frequency moving on the decomposed image to obtain a frequency moving image; performing Wiener filtering on the frequency moving image to obtain a super-resolution image; and performing establishing a target function, performing iteration updating on the target function, and obtaining a denoised image when the error is less than the preset value. The low signal to noise ratio image reconstruction method and system can improve the current time resolution, and can reduce the artificial artifact in the image.