212 results about "Penetration depth" patented technology

The invention discloses a photoacoustic spectrum-confocal Raman spectrum multi-view-field high-dimensional imaging method and a photoacoustic spectrum-confocal Raman spectrum multi-view-field high-dimensional imaging device. Nanosecond pulse laser with adjustable wavelength is generated through a continuous spectrum nanosecond pulser and a narrow-band spectrum tuning module and cooperates with a microscopic detection module, a depth imaging module, a galvanometer system and an electric displacement table to obtain spatial three-dimensional data, a photoacoustic spectrum and a Raman spectrum under multiple view fields; shallow photoacoustic spectrum-Raman spectrum tomography and deep three-dimensional photoacoustic imaging are realized; correcting a photoacoustic spectrum quantitative error by using a spectrum decoupling algorithm, and fusing the multi-view-field data to generate multi-view-field high-dimensional photoacoustic spectrum-Raman spectrum data; high-dimensional data features are extracted based on a 3D convolution instance segmentation network, and quantitative analysis and spatial distribution visualization of blood oxygen, inflammatory factors and the like are achieved. According to the method, the limitation that substances are difficult to analyze in photoacoustic imaging is overcome, the contradiction between the imaging resolution and the penetration depth is solved, and an accurate analysis means is provided for diagnosis of diseases such as knee osteoarthritis and sepsis.

In one aspect, build materials for use with a three-dimensional (3D) printing system are described herein. In some embodiments, a build material described herein comprises an acrylate component, a photoinitiator component, a non-curable absorber component, and water. The photoinitiator component of the build material is operable to initiate curing of the acrylate component and / or other curable materials that may optionally be present when the photoinitiator is exposed to incident curing radiation having a Gaussian distribution of wavelengths and a peak wavelength λ. The build material has a penetration depth (Dp) and a critical energy (Ec) at the wavelength λ. In some embodiments, the Dp is greater than 200 μm and less than 300 μm, and the Ec is 3-12 mJ / cm2. In other embodiments, the Dp is greater than 10 μm and less than 50 μm, and the Ec is 5-40 mJ / cm2.

The described cone penetrometer system is a geotechnical testing apparatus designed for accurate soil assessment comprising a drive shaft with an attached cone at its distal end, a load cell connected to the shaft for precise measurement of applied force, and a depth transducer to accurately gauge the penetration depth of the cone. This system distinguishes itself from traditional methods by directly converting force to bearing capacity based on the cone's surface area, eliminating the reliance on less accurate blow conversion tables. The inclusion of a reliable depth transducer ensures precise depth measurements, facilitating accurate plotting of bearing capacity against depth. While delivering enhanced accuracy, the system retains the advantages of lightweight, cost-effectiveness, and manual operation, aligning with the simplicity and efficiency characteristic of traditional methods like the Dynamic Cone Penetrometer (DCP) compared to more intricate and expensive Cone Penetration Test (CPT) systems.

The invention belongs to the technical field of soil pile testing, and particularly relates to a full-size static sounding soil squeezing pile penetration depth and ultimate bearing capacity synchronous testing device which comprises a supporting frame composed of two transverse rectangular plates and two longitudinal rectangular plates. A bearing supporting plate is fixedly installed on the upper surface of a longitudinal rectangular plate on one side of the supporting frame through bolts, a surrounding plate is arranged on the edge of one side of the upper surface of the bearing supporting plate, and a partition section is arranged between the bearing supporting plate and the surrounding plate. In the monitoring assembly, a photoelectric displacement sensor is installed between a sleeve and an anti-interference ring, the soil penetration depth of the concrete pile is accurately obtained by detecting the relative displacement of the sleeve and the anti-interference ring, external interference is effectively reduced through the arrangement of the anti-interference ring, the stability and accuracy of measured data are guaranteed, and a pressure sensor is matched with a stress sleeve to accurately transmit the stress of the pile body; the pressure change can be accurately sensed, the transmission structure of the worm gear and the worm is combined, the ultimate bearing capacity measurement precision is further improved, and reliable data support is provided for engineering design.

The invention relates to the technical field of image processing and geotechnical engineering monitoring, in particular to a roadway surrounding rock image crack identification method which comprises the following steps: S1, synchronously acquiring a visible light image and a near-infrared image of roadway surrounding rock; s2, calculating the multi-direction gradient distribution dispersion of each pixel point based on the visible light image, and generating a curvature gradient entropy graph; s3, according to local extreme value distribution of the curvature gradient entropy graph, constructing a dust mask graph; s4, based on the negative correlation between the curvature gradient entropy and the near-infrared penetration depth, calculating the fissure confidence per pixel; s5, performing adaptive threshold segmentation on the fissure confidence to generate a primary fissure binary image; and S6, performing morphological skeleton extraction and breakpoint connection on the primary fracture binary image, and outputting a roadway surrounding rock fracture recognition image. According to the method, continuous, accurate and high-confidence identification of the surrounding rock fracture of the roadway in a high-dust interference environment is realized by fusing the structure entropy features and the near-infrared transmission information.

The invention discloses a self-adaptive detection device for the size of an inner cavity of a part machined by a special-shaped machine, and relates to the technical field of part detection. According to the invention, a multi-stage reflection light path formed by a first reflection lens, a second reflection lens, a third reflection lens and a fourth reflection lens is utilized to sequentially reflect and conduct laser according to a fixed 45-degree angle, so that the light is irradiated on the light sensor. The design can effectively detect whether the detection tube has mechanical micro-deformation, and greatly improves the precision of inner cavity size detection. The L-shaped extension rod convenient to disassemble is combined with the detection contact ball, so that self-adaptive extension of the detection tool to different inner cavity sizes and shapes is realized. By flexibly changing and combining the structure, the extension depth of the detection contact ball can be adjusted according to the specific requirements of the inner cavity of the part, and the full contact with the inner wall of the part is ensured.

A method of performing indentation plastometry is provided. The method includes steps of: providing a sample of a material and an indenter having a contact surface of a predetermined shape and size; forming a first indent having a first penetration depth within the sample by applying a load to press the contact surface of the indenter into the sample; measuring a first indent profile of the first indent; on the basis of the first indent profile, and the applied load to form the first indent, obtaining a preliminary measurement of a characteristic of the material; on the basis of the obtained preliminary measurement of the characteristic of the material, determining whether a second indent having a different, second penetration depth is required to obtain a more accurate measurement of the characteristic of the material, and when the second indent is required, determining a value for the second penetration depth; forming the second indent having the second penetration depth within the sample by applying a load to press the contact surface of the indenter into the sample; measuring a second indent profile of the second indent; and on the basis of the second indent profile, the applied load to form the second indent, obtaining the more accurate measurement of the characteristic of the material.

The invention discloses a laser welding device and method capable of monitoring the welding penetration depth in real time, and belongs to the technical field of laser welding. The laser welding device comprises a laser processing module, a penetration depth measuring module and a control module; the measurement light can accurately enter the molten pool and reflect an echo signal, so that the measurement error caused by light path deviation is avoided; the control module is connected with the fusion depth measuring module and the laser processing module at the same time, transmitting signals and echo signals can be rapidly obtained and real-time fusion depth information can be calculated and analyzed by means of the high-frequency signal transmission and processing capacity, the laser processing module can be controlled to adjust parameters in time when the fusion depth is abnormal, the fusion depth is kept within a set range all the time, and the fusion depth measuring accuracy is improved. High-precision real-time closed-loop feedback from measurement to control is realized, the stability and consistency of welding quality are greatly improved, the rejection rate is reduced, and the production efficiency is improved.

The present disclosure provides a visual sensor. The visual sensor comprises: a target silicon base provided with a first pixel array layer and a second pixel array layer. The first pixel array layer is disposed on a front face of the target silicon base and is used for extracting an optical signal of a first wave band from incident light on the visual sensor. The second pixel array layer is disposed below the first pixel array layer and is used for extracting an optical signal of a second wave band which is transmitted by incident light onto the second pixel array layer. The optical signal of the first pixel array layer located in the first wave band penetrates through the depth range of the target silicon base. The optical signal of the second pixel array layer located in the second wave band penetrates through the depth range of the target silicon base. The penetration depth of the optical signal of the second wave band in the target silicon base is greater than the penetration depth of the optical signal of the first wave band in the target silicon base.

The invention discloses a PCB soldering paste printing three-dimensional defect detection system based on multispectral imaging, and relates to the field of machine vision detection, and the system comprises a multispectral image acquisition module, a four-channel industrial camera based on RGB and near infrared, and a tunable LED light source array; acquiring reflection characteristic data under different penetration depths through a wavelength switching mechanism; the motion control trigger module is used for realizing positioning based on an XYZ three-axis objective table driven by a servo motor in cooperation with feedback of an encoder; a pulse width modulation signal is adopted to coordinate the moving speed of a camera shutter and a platform; according to the method, RGB and NIR four-channel imaging is combined with Beer-Lambert law modeling, so that double verification of material component quantitative analysis and three-dimensional shape reconstruction is realized, and limitation of monocular vision is avoided; structured light projection and binocular stereo matching technologies are adopted, cross-frame data alignment is realized in cooperation with an ICP algorithm, and detail defects can be better detected.

The invention relates to the technical field of image recognition, and discloses a concrete prefabricated part surface crack detection method and system based on image recognition, and the method comprises the steps: collecting a double-spectrum image sequence of a concrete prefabricated part in a near-infrared wave band and a visible light wave band; separating a surface texture mask and a subsurface structure gradient map of the precast concrete in the double-spectrum image sequence; according to the non-continuous mutation characteristics of the subsurface structure gradient map, identifying a density abnormal region of the concrete prefabricated member, and extracting a potential crack path of the density abnormal region in combination with the penetration depth difference of the near-infrared band; utilizing the surface texture mask to shield an environment interference area of the potential crack path; and collecting the surface vibration frequency spectrum of the shielded area under simulated vibration excitation. The method can solve the problems that the potential crack path cannot be positioned through the penetration depth difference and the detection coverage range and the precision cannot meet the engineering requirements in the prior art.

The invention relates to the technical field of semiconductor ultra-precision machining, and discloses a three-light coaxial laser-induced wafer splitting system and a quantization stress field regulation and control method. Comprising a quantum dot dynamic marking system, a topological photonics laser modification module, a quantization stress regulation and control algorithm, photonic crystal waveguide laser processing and stress field quantum regulation and control verification. According to the three-beam coaxial laser-induced wafer splitting system and the quantization stress field regulation and control method, a non-Hermite photonic crystal waveguide technology regulates and controls the phase of a laser beam through topology photonics, so that a lattice-modified subsurface quantum tunneling effect (the error of penetration depth is less than 50nm) is realized; the three-light coaxial holographic monitoring system integrates laser processing, quantum dot microscopic imaging (with the resolution of 0.5 nm) and digital holographic interference measurement to realize crack propagation dynamic tracking, and the quantum dot holographic tracking technology adopts CdSe / ZnS quantum dots to mark crack tips and combines digital holographic interference measurement (with the resolution of 0.3 nm) to realize crack three-dimensional morphology reconstruction.

The invention discloses a multi-cyano offset substituted pentamethine cyanine dye and a synthesis method and application thereof, and the dye has the following general formula structure: # imgabs0. According to the multi-cyano offset substituted pentamethine cyanine dye disclosed by the invention, the absorption emission wavelength is increased by introducing an offset substitution structure; the dye has near-infrared first-area imaging and treatment performance, so that the optimal excitation and emission wavelength can be flexibly selected, the dye shows obvious Stokes shift, reduction of self-absorption and scattering effects is facilitated, the imaging definition and depth are improved, the molar extinction coefficient of the prepared dye is up to 190000, and the dye can be applied to near-infrared first-area imaging and treatment of the near-infrared first-area imaging and treatment of the near-infrared first-area imaging and treatment of the near-infrared first-area imaging. According to the present invention, with the application of the dye, the light energy utilization degree of the dye is substantially improved, the long wavelength light with the deeper penetration depth can be strongly absorbed, the light energy capture and conversion can be effectively achieved, the photosensitizer efficiency can be improved, the light dose can be reduced, the phototoxicity can be reduced, the high absolute fluorescence quantum yield can be represented, and the biological imaging effect can be substantially improved; and the imaging quality is higher.

The invention discloses a laser therapeutic instrument control method, equipment, a product and a medium, and relates to the technical field of medical instrument control. According to the method, an action area is divided into a plurality of operation units, and a reflection spectrum and a scattering spectrum of each operation unit are acquired in real time by utilizing a detection light beam, so that optical characteristic information of the tissue is accurately obtained; extracting multi-dimensional absorption characteristic parameters including a wave band absorption coefficient, a scattering attenuation coefficient and an effective penetration depth; a dose response function constructed based on the parameters can accurately represent a nonlinear mapping relation between the input laser energy and the actual absorbed dose; differential laser input parameters are reversely calculated through dose equalization processing, so that operation units with different optical characteristics can receive corresponding target absorbed doses; and finally, the laser therapeutic instrument executes operation according to the differentiated parameters, so that accurate energy control on areas with different optical characteristics is realized, and the effectiveness of laser treatment is improved.

The invention discloses a method for identifying a blood vessel in an endoscope image and an endoscope system. The method for identifying the blood vessel in the endoscope image comprises the following steps: acquiring a multi-channel image formed by endoscope imaging; time sequence points of all points in all RGB channels in the to-be-analyzed area in the multi-channel image are extracted, and normalization processing is carried out; according to the time sequence point of each point in each RGB channel in the to-be-analyzed area, respectively calculating the time sequence point of the mean value of each RGB channel in the to-be-analyzed area, and carrying out normalization processing; according to the normalized time sequence point of each point in each RGB channel in the to-be-analyzed area, determining a PPG amplitude for representing blood fluctuation information at each point; determining an average amplitude for representing blood fluctuation information according to a time sequence point of an average value of each RGB channel in the normalized region to be analyzed; and determining a blood vessel region according to the PPG amplitude of each point, the average amplitude, the penetration depth of the light sources with different wavelengths to human tissues and the difference of the absorption characteristics of blood components.

An apparatus for sterilizing a liquid comprises a container having an inlet, an outlet and an interior with an outer wall, and a light source adapted to emit radiation in the ultraviolet wavelength range through the outer wall into the interior, the outer wall being partially transparent. The inlet comprises an opening, positioned in relation to the outer wall of the interior and the light source in order, when a pressure is exerted on the liquid to be admitted through the opening and to be sterilized, to form a liquid jet directed onto the outer wall in a region of the light source, above the latter, and / or to form a liquid film there. The liquid jet impinging on the outer wall may flow down thereon as a thin liquid film in front of the light source and thereby effectively sterilized even with a low penetration depth of the UV radiation.

The present application relates to a lens for focusing at least two partial rays of a light ray incident on the lens into at least one predetermined depth of an image space, comprising: (a) a focusing unit with at least one optical element; (b) at least one combined beam-splitting and aberration-compensating unit, which is configured to split the light ray entering the lens into at least two partial rays and to compensate for at least one aberration of the at least one optical element of the focusing unit in advance; and (c) wherein the at least one optical element is configured to focus the at least two partial rays leaving the combined beam-splitting and aberration-compensating unit into the at least one predetermined depth of the image space.

This invention provides a method for preparing and testing powder diffraction standards for determining internal residual stress, belonging to the field of residual stress detection. The powder standards prepared by this invention possess shape retention capabilities, meeting the requirements of the transmission diffraction optical path in non-destructive diffraction determination of internal residual stress. The powder, after being bonded with an adhesive, forms a blocky solid form, and standards of different sizes can be prepared according to the penetration depth of different diffraction sources on different substrate materials. Furthermore, the ratio of powder to adhesive can be adjusted to obtain different diffraction volume ratios. By testing the uniformity of diffraction peak intensity distribution in translational and rotational degrees of freedom, the uniformity of the internal lattice distribution and orientation of the standard sample can be determined, thereby testing and judging the uniformity of the standard sample.

This application relates to the field of quantum nondestructive testing technology, and discloses a quantum detection device and a xenon atom-based eddy current detection method. The quantum detection device includes an interconnected eddy current probe and a quantum measurement device. The quantum measurement device includes a xenon atom gas chamber for measuring the magnetic field strength of a target eddy current magnetic field. It acquires the target eddy current magnetic field of the target object, measures the magnetic field strength of the target eddy current magnetic field, and obtains the magnetic field strength distribution along the surface of the target object. Based on the magnetic field strength distribution, it detects thickness changes in the target object to obtain the weak point detection result. Its beneficial effect is that by measuring the eddy current magnetic field generated by the target object through a xenon atom gas chamber, it effectively utilizes the characteristics of xenon atoms—long coherence time and extremely low resonance frequency—thereby maintaining high sensitivity to capture weak magnetic fields at extremely low frequencies and obtaining a detection penetration depth far exceeding that of traditional sensors, achieving high-precision nondestructive testing of minute thickness differences inside the target object.

The invention discloses an energy-absorbing stone and a preparation method thereof, and relates to the technical field of life cultivation and health preservation. According to the technical key points, three raw materials including coconut shell activated carbon powder, A900 type aluminate cement and natural dark jade powder are precisely selected, and the purity, the particle size, the water content and the volume ratio of each raw material are strictly controlled, so that the synergistic interaction of the functions of the raw materials is realized; wherein the large specific surface area characteristic of the coconut shell activated carbon powder guarantees the adsorption performance, the auxiliary energy storage effect of the natural dark jade powder stabilizes the release of far infrared rays, and the excellent curing performance of the A900 type aluminate cement guarantees the structural compactness; the problems that in the prior art, raw materials are single in function and poor in synergism are solved, the far infrared ray release wavelength of a finished product is precisely locked to the human body adaptive wave band of 5-15 micrometers, the energy penetration depth reaches subcutaneous 20 mm, the adsorption value is larger than or equal to 100 mg / g, meanwhile, no harmful components are separated out, and the effectiveness and use safety of the health preserving function are guaranteed from the source.

The application relates to a kind of self-adapting scattering deep penetration microscopic endoscopic imaging method, device and medium, method comprises the following steps: S1, the input-output mapping relationship of optical fiber under specified penetration depth is measured;S2, when the same specified penetration depth is set with biological sample, effective pixel is traversed;S3, when traversing each effective pixel, the traversal range of the phase constant of each pixel is adjusted, and the phase constant corresponding to each pixel is obtained, so that the light intensity is maximum;S4, data integration is carried out, and a group of self-adapting scattering matrix corresponding to each pixel is obtained;S5, calling self-adapting scattering matrix as phase parameter, scanning is carried out pixel by pixel, and the light intensity corresponding to pixel is obtained, and the light intensity is combined into a frame gray scale image.Compared with prior art, the application has the advantages of clearly imaging deep tissue, effectively improving imaging quality and the like.

The utility model relates to a step-shaped deep through hole metal part multi-stage inner diameter non-contact measurement device, and belongs to the field of step-shaped deep through hole metal parts. Comprising a shading box, a box door hinged to the exterior of the shading box, a PLC fixedly installed on the exterior of the shading box, an industrial camera arranged in the shading box, an installation box arranged in the shading box and an installation base fixedly connected to the inner bottom wall of the shading box, and a lifting mechanism extending to the exterior of the installation box is arranged in the installation box; and a rotary switching mechanism extending to the outside of the mounting seat is arranged in the mounting seat. According to the non-contact measurement of the multistage inner diameter of the stepped deep through hole metal part, the servo motor is started to work through the PLC to drive the industrial camera and the light source to move, the probing depth and angle of the light source are controlled, the metal part is used for machining a fillet to reflect light, and the industrial camera obtains a clear deep hole boundary image; non-contact measurement is carried out on metal parts of different sizes, and the advantage of high measurement precision is achieved.

An X-ray source is provided comprising a target generator configured to generate a liquid jet having an elongated cross with a major axis and a minor axis; an electron source configured to generate an electron beam arranged to interact with the liquid jet in an interaction region to generate X-ray radiation; and an X-ray transparent window arranged to transmit X-ray radiation generated in the interaction region, wherein the X-ray transparent window is located for extraction of X-ray radiation at an angle α relative to the major axis; wherein the target generator is configured to generate the liquid jet such that said jet has a thickness at the interaction region, along a propagation direction of the electron beam, that is less than an electron penetration depth of the electron beam in the liquid jet. A corresponding method for generating X-ray radiation is also provided.

The application discloses a small celestial body penetration anchoring test platform and a test method thereof. The test platform comprises a main structure, a simulated asteroid container, a launching unit, a speed meter, a camera, a force steel wire, a tension meter, a rocker arm, and a rocker arm support. The launching unit comprises a mounting plate, a base, a launching cylinder, a piston, a cartridge, a ejector pin, a recovery spring, an electromagnet, an anchor body, a buffer pad, a flange, an ejector pin support, and a pose adjustment groove. The cartridge is internally provided with air holes, so that the penetration depth, the penetration trajectory, and the anchoring force of the anchor body in different speeds, different penetration angles, and layered asteroid soil can be tested. The anchor body penetration power is provided by a blank cartridge, and the blank cartridge is triggered by the electromagnet hitting the ejector pin. The application has the characteristics of high test efficiency, full test coverage elements, low cost, safe and simple operation, and the like.

Methods, systems, and devices for wavelength based noise filtering for a wearable ring device are described. For example, a noise filtering process may involve combining multiple wavelengths with different penetration depths. For instance, a first measurement may include a first signal gathered from emitting a first light and a second light. A second measurement may include a second signal gathered from emitting the first light and a third light. That is, the first light may be a common denominator between the two measurements. The wearable device may compare or contrast the different signals to determine a noise component. The wearable device may determine the noise component based on the differences between the measurements and their associated penetration depths. The device may then remove the noise component (e.g., filter the noise) from the first and second signals resulting in a clean signal.

The invention provides a cobalt-iridium metal complex, nanoparticles, a preparation method and application, and belongs to the technical field of photodynamic therapy drugs. The structural formula of the cobalt-iridium metal complex is shown as a formula (I). The invention also provides a preparation method of the cobalt-iridium metal complex. The invention also provides nanoparticles, the cobalt-iridium metal complex prepared by the invention has a chemiluminescence property, so that the cobalt-iridium metal complex can simultaneously realize photo-thermal, photodynamic and ultrasonic synergistic thrombolysis treatment effects, and the oxidation resistance of the cobalt-iridium metal complex has a remarkable curative effect on a vascular injury part. The complex provided by the invention has good photo-thermal, photodynamic and ultrasonic response capabilities, and can overcome the problems of short excitation wavelength of exciting light and limited light penetration depth required by the existing metal iridium complex. Experiments show that the material has a good treatment effect on thrombus.

The invention discloses a rare earth homologous dual-emission high-resolution deep imaging method based on deep learning enhancement. A plurality of long-life intermediate states of lanthanide upconversion nanoparticles (UCNPs) are utilized, a single 980nm pumping source is used for exciting Tm < 3 + > / Yb < 3 + > co-doped UCNPs, and two-photon fluorescence with higher penetrability and four-photon fluorescence with higher resolution are induced at the same time. By combining a dual-mechanism CycleGAN artificial neural network based on antagonism training and cyclic consistency constraint, cross-domain mapping between two fluorescence signals is established, and the advantages of two fluorescence imaging are cooperatively utilized, so that deep penetration and high-resolution imaging are realized. According to the invention, in a self-established wide-field microscopic imaging system, the resolution of 209nm of a single particle in a 808nm fluorescence channel can be realized, and the signal-to-background ratio is doubled. According to the invention, the technical bottleneck that the resolution and the penetration depth of a traditional multi-photon microscope in deep tissue imaging are mutually restricted is effectively solved.

According to the full-field coherence tomography device and method based on ultrasonic rotation and bidirectional interference, a Kohler illumination system forms parallel light which enters an interference and shunt unit, and the interference and shunt unit divides the entering light into a reference arm and a sample arm; the sample arm unit divides a sample arm light path into two sample light paths to irradiate the upper side and the lower side of the same sample; the reference arm unit realizes optical path selective matching of phase displacement and two sample optical paths; the ultrasonic rotating unit enables the sample to be in a non-contact suspension state and rotate according to a set angle so as to obtain multi-direction interference information; the imaging and acquisition unit focuses and detects light returned by the reference arm and the sample arm; and the switching and fusion unit switches the state of the reference arm, so that the reference arm is respectively matched with the two sample light paths, interference acquisition, demodulation and three-dimensional reconstruction of interference fringes and fusion of up-down bidirectional and multi-angle data are completed, and a high-penetration three-dimensional imaging result is obtained. According to the invention, the penetration depth can be enhanced, the three-dimensional reconstruction quality is improved, and non-contact operation is realized.

The application relates to the technical field of grouting, in particular to Eu 3+ Application of doped high-activity beta-Ca2SiO4 in grouting slurry diffusion tracing. 3+ The doped high-activity beta-Ca2SiO4 endows the beta-Ca2SiO4 with excellent luminescent performance without changing the original performance of the beta-Ca2SiO4, and the excellent luminescent performance can conveniently, directly and quickly trace the penetration depth and flow condition of the slurry. The material has physical and chemical properties similar to those of the actual engineering application material, and is expected to be used as a candidate material for verifying the accuracy of numerical simulation.

The invention discloses a penetration depth and intensity adjustable phototherapy head and a phototherapy instrument, the penetration depth and intensity adjustable phototherapy head comprises a mounting cylinder, a light source assembly, an adjusting cylinder, a concave lens, a first contact ring, a limiting shell, a second contact ring and a spherical lens, one end of the adjusting cylinder is arranged on the peripheral wall of the mounting cylinder; the limiting shell is arranged on the peripheral wall of the other end of the adjusting cylinder. The adjusting cylinder rotates through threads to enable the spherical lens to be close to or far away from the light source assembly, so that the light convergence depth is adjusted, the light spot diameter of the spherical lens at the skin contact end can be adjusted, and the requirements of different treatment parts and energy are met by adjusting the diameter of the treatment light spot. The concave lens is arranged to diverge certain light energy, so that the energy entering the spherical lens to be converged is reduced, and the problem that the light energy is converged in the deep layer of the skin of a treated person to cause deep tissue burn can be avoided.