30results about How to "Large imaging range" patented technology

A method of inspecting a lateral pipe extending from a manhole, said method comprising: (a) inserting an imaging head into said manhole using a positioning system, said imaging head connected to an elongated member and comprising an imaging device adapted to convert an image to an image signal, a lens optically coupled to said imaging device, and at least one lamp suitable for projecting a light beam, said lamp having a beam that is adjustable to enable said beam to move relative said imaging device; (b) imaging a target located within said lateral pipe; (c) holding said imaging device essentially steady while imaging said target and adjusting said beam to adjust the illumination of said target.

A method of inspecting a lateral pipe extending from a manhole, the method comprising: (a) extending an imaging head into the manhole using a positioning system, the imaging head comprising an imaging device and at least one lamp capable of producing a light beam, the positioning system comprising an elongated member and a targeting fixture operatively connected thereto, the imaging head being attached to one end of the elongated member, the targeting fixture having a distal end biased outwardly from the imaging head; (b) placing the distal end on a rigid surface proximate to the lateral pipe; (c) pushing down on the elongated member such that the distal end resiliently moves toward the imaging head, thereby allowing the light beam to be centered approximately in the lateral pipe; and (d) imaging a target located within the lateral pipe.

A method and apparatus are provided for a swept source optical coherence tomography (OCT) system utilizing a fast scanning mechanism in the sample arm and a slowly swept light source. The position data is collected rapidly while the wavelength of the source is swept slowly. The system reduces the sweep speed requirements of the light source enabling higher power, greater imaging range, and linear sweeps of the source frequency. The OCT components (or most of them) may be implemented within a hand held imaging probe. In operation, a triangulation scan may be used to orient the imaging probe with respect to a fixed coordinate system; preferably, OCT data captured by the device is then transformed to that same orientation with respect to the fixed coordinate system to improve the scanning results.

The application provides an optical imaging lens group. The optical imaging lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens in sequence along an optical axis from an object side to an image side. The first lens has a focal power, the second lens has a positive focal power, the third lens has a focal powerand an image side surface thereof is a convex surface, the fourth lens has a negative focal power, the fifth lens has a focal power, the sixth lens has a focal power and an object side surface thereofis a concave surface and an image side surface thereof is a convex surface, the seventh lens has a positive focal power, and the eighth lens has a focal power.

The invention discloses a control optimization method used for a fire grate incinerator and based on flame radiation images. The control optimization method comprises the following steps that the waste combustion conditions of all subareas are shot in real time, and image noise is eliminated; the multiple flame images are acquired, and the average values of R, G and B of the obtained images are calculated; the average values of the R, the G and the B are input into a trained BP neural network, and temperature field distribution and the average temperature T of all fire grate combustion areas are obtained; and the obtained flame average temperature T of all the combustion areas and a preset temperature range are compared and judged, and accordingly the feeding speed of all the combustion areas, the primary air volume and the secondary air volume are adjusted correspondingly. The invention further discloses a control optimization device used for the fire grate incinerator and based on the flame radiation images. According to the control optimization method used for the fire grate incinerator and based on the flame radiation images, temperature fields of waste flame on all subarea fire grates can be quickly rebuilt in real time; by adjusting the combustion parameters of all the subarea fire grates correspondingly, real-time optimal control over waste burning uniformity and efficiency is achieved.

A method and apparatus are provided for a swept source optical coherence tomography (OCT) system utilizing a fast scanning mechanism in the sample arm and a slowly swept light source. The position data is collected rapidly while the wavelength of the source is swept slowly. The system reduces the sweep speed requirements of the light source enabling higher power, greater imaging range, and linear sweeps of the source frequency. The OCT components (or most of them) may be implemented within a hand held imaging probe. In operation, a triangulation scan may be used to orient the imaging probe with respect to a fixed coordinate system; preferably, OCT data captured by the device is then transformed to that same orientation with respect to the fixed coordinate system to improve the scanning results.

The invention provides a pitch angle imaging method based on vortex electromagnetic waves, and belongs to the field of radar target imaging. The traditional method is based on electromagnetic wave amplitude scanning, the amplitude scanning range of the traditional method is limited by the working bandwidth of an antenna, and is different from the traditional pitch angle imaging based on vortex electromagnetic waves. The pitch angle imaging method based on vortex electromagnetic waves can work at a single frequency point based on the phase information of an echo signal, so that the pitch angleimaging range is wide, and the requirement on the bandwidth of the antenna is low. The accuracy of amplitude scanning of the traditional method depends on the width of an electromagnetic beam, and thenarrower the electromagnetic beam is, the higher the imaging accuracy is, but the narrower electromagnetic beam is difficult to realize. The imaging precision of the pitch angle imaging method basedon vortex electromagnetic waves depends on the grid thickness during discretization of the pitch angle, and the imaging precision can be effectively improved by adopting thinner grids. The pitch angleimaging method based on vortex electromagnetic waves can realize the measurement of the pitch angle of 5-85 degrees, has wide measurement range, and has the imaging error lower than 1.2 degrees in the range of the pitch angle of 5-85 degrees.

The invention discloses an optical system, a lens module and electronic equipment. The optical system includes, in order from an object side to an image side along an optical axis direction, first tofifth lenses having refractive power, wherein the first and fourth lenses have positive refractive power, and the fifth lens has negative refractive power; object side surfaces of the first to fourthlenses and an image side surface paraxial region of the fourth lens are convex surfaces, and image side surface paraxial regions of the first to third lenses are concave surfaces; the object side surface and the image side surface of the fifth lens are aspheric surfaces, at least one of the object side surface and the image side surface of the fifth lens is provided with at least one inflection point, and the optical system satisfies the conditional expression: 0.2< / =IMGH / OBJH< / =0.8. By arranging the five-piece lens structure, the refractive power of the five optical lenses and the surface type of the paraxial region are reasonably configured, and the optical system meets the relational expression, so that the optical system has a wider imaging range and higher magnification, and is easy to miniaturize.

The invention discloses a railway crossing remote centralized control and intelligent early warning integrated system. The system comprises a dispatching center control subsystem, a dispatching center video / audio subsystem, a crossing field front-end device subsystem and an optical fiber communication subsystem. The dispatching center video / audio subsystem is connected with the dispatching center control subsystem. The crossing field front-end device subsystem is connected with the dispatching center control subsystem through the optical fiber communication subsystem. The dispatching center control subsystem comprises a control server and a communication controller, achieves monitoring and control over all devices of the other three subsystems and completes remote control command for dispatching operators. The dispatching center video / audio subsystem comprises a video image display module and a video / audio storage device matrix. Remote videos, remotes audios and remote control are centralized and integrated into the system, the efficiency is improved, the operation is facilitated, and the system is safer and more reliable.

The invention provides an ultrasonic puncture guidance device and ultrasonic puncture guidance equipment, and relates to the field of medical instruments. The ultrasonic puncture guidance device comprises a puncture needle tube and an ultrasonic transducer; puncture needle head is arranged at one end of the puncture needle tube; the ultrasonic transducer is contained in the puncture needle tube, and extends to the position of the puncture needle head; the ultrasonic transducer comprises a plurality of ultrasound array elements which are used for launching and receiving ultrasound; and the plurality of ultrasound array elements are arranged at the puncture needle head. During practical use, the plurality of ultrasound array elements are used for carrying out electronic scanning imaging, sothat, wide imaging range can be achieved; and thus, tissue structure in front of the puncture needle head can be effectively recognized, thereby facilitating planning of the best puncture path. Compared with the prior art, the ultrasonic puncture guidance device provided by the invention is closer to imaged tissues, so that, clearer imaging can be achieved; and thus, imaging is not liable to be affected by blocking by other parts. Moreover, the ultrasonic puncture guidance device is convenient to operate; and collaboration of multiple medical stuffs is not required.

The invention discloses an organic small molecule dye, and discloses a preparation method and application of the dye and J aggregation nanoparticles thereof. The J aggregation nanoparticles are prepared by a nano coprecipitation method based on an organic small molecule dye and an amphiphilic polymer. The nanometer diagnosis and treatment particles with the maximum optical absorption and the maximum fluorescence emission in an NIR-II area are prepared through the unique property of J aggregation, meanwhile, the fluorescence emission wavelength of the nanometer particles can extend to the NIR-IIb area, and the nanometer diagnosis and treatment particles can be applied to high-resolution imaging of living blood vessels and tumors excited by 1064 nm laser. The nanoparticles can generate photo-thermal and photodynamic properties under 1064nm laser irradiation, so that the nanoparticles can be applied to combined treatment of deep tumors, the treatment effect is remarkably improved, and the nanoparticles have good clinical application prospects.

The invention discloses a method for detecting defects in at least one article, the method comprising the steps of: acquiring, via an image acquisition module (104), at least one image of an article in a production line; processing the acquired image via artificial intelligence (106) to determine whether any defect is present in the item; discharging defective items from a former in the productionline via a purge system (105); and updating the result to the artificial intelligence (106) for subsequent detection. The artificial intelligence (106) trains its dataset using a neural network by performing an iterative training process to create at least one data classification from a plurality of pre-stored images; and generating a weight formula according to the data classification so as to evaluate the data of the acquired image.

The invention discloses a small wide-angle high and low temperature day and night confocal lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and an optical filter which are sequentially arranged from an object side to an image side along an optical axis; the first lens is a convex-concave spherical lens with negative focal power; the second lens is a concave-convex aspherical lens with positive focal power; the third lens is a concave-convex aspherical lens with positive focal power; the fourth lens is a biconvex spherical lens with positive focal power; the fifth lens is a biconcave aspherical lens with negative focal power; and the sixth lens is a biconvex aspherical lens with positive focal power. The lens has a large aperture, can realize clear imaging under weak light, has a large field angle, low distortion and high image trueness, has an imaging effect of 5million pixels, meets day and night sharing requirements, and is stable in working performance, small in overall size, low in cost and wide in application range in an environment of -40 DEG C to + 70 DEG C.

The invention discloses an esophagus internal intubation tube detection device and relates to the technical field of medical equipment. The esophagus internal intubation tube detection device comprises a supporting mechanism, a hinging mechanism, an imaging mechanism, a lead-in mechanism, a power mechanism, a detection mechanism and a transmission mechanism; the imaging mechanism is hinged with the upper surface of the supporting mechanism through the hinging mechanism; the right end of the lead-in mechanism is in inserting connection with the left side surface of the imaging mechanism; and the power mechanism, the transmission mechanism and the detection mechanism are positioned at the left end of the lead-in mechanism. According to the esophagus internal intubation tube detection device,through cooperative work of the power mechanism and the transmission mechanism, angle adjustment of a camera in the detection mechanism can be realized; through a controller in the imaging mechanism,the working state of the power mechanism is controlled, the angle of the camera can be adjusted rapidly and the imaging range is wider; and multi-angle image information acquisition in an esophagus of a patient can be realized without rotating a detection hose, so that the discomfort of the patient can be reduced.

A method of inspecting a lateral pipe extending from a manhole, the method comprising: (a) extending an imaging head into the manhole using a positioning system, the imaging head comprising an imaging device and at least one lamp capable of producing a light beam, the positioning system comprising an elongated member and a targeting fixture operatively connected thereto, the imaging head being attached to one end of the elongated member, the targeting fixture having a distal end biased outwardly from the imaging head; (b) placing the distal end on a rigid surface proximate to the lateral pipe; (c) pushing down on the elongated member such that the distal end resiliently moves toward the imaging head, thereby allowing the light beam to be centered approximately in the lateral pipe; and (d) imaging a target located within the lateral pipe.

The invention provides a puncture ultrasonic guiding device and a puncturing ultrasonic guiding device, which relate to the field of medical instruments. The puncturing ultrasonic guiding device includes a puncture needle tube and an ultrasonic transducer. The container is accommodated in the puncture needle tube and extends to the puncture needle, and the ultrasonic transducer includes a plurality of ultrasonic array elements for transmitting and receiving ultrasonic waves, and the plurality of ultrasonic array elements are arranged on the At the puncture needle. In actual use, by using multiple ultrasonic array elements for electronic scanning imaging, the imaging range is wide, and the tissue structure at the front end of the puncture needle can be effectively identified, thereby facilitating the planning of the best puncture path. Compared with the prior art, the puncture ultrasonic guiding device provided by the present invention is closer to the imaged tissue, the imaging is clearer, it is not easy to be blocked by other parts to affect the imaging, and the operation is convenient without the cooperation of multiple medical staff.

The invention provides an optical imaging lens. The optical imaging lens sequentially comprises: from the object side of the optical imaging lens to the image side of the optical imaging lens along an optical axis,plain glass; a first lens, wherein the image side surface of the first lens is a concave surface; a second lens; a third lens; and a fourth lens with negative focal power. The half Semi-FOV of the maximum field angle of the optical imaging lens meets the condition: Semi-FOV> 40 DEG C; the effective focal length f1 of the first lens and the combined focal length f23 of the second lens and the third lens meet the following formula:-1.0< f23 / f1< -0.5. The optical imaging lens solves the problem that in the prior art, an optical imaging lens cannot shoot detail images clearly.

A multiple-degree-of-freedom near-field optical microscope based on a micro-nano motion arm comprises the micro-nano motion arm, a quartz tuning fork, a near-field optical probe, a sample scanning stand, a sinusoidal signal generator, a preposed lock-in amplifier, a control box and a detector and / or a light source, wherein the quartz tuning fork is fixed at the front end of the micro-nano motion arm; the near-field optical probe is fixed on one tuning fork arm of the quartz tuning fork; the sample scanning stand is positioned under the quartz tuning fork; the signal output end of the sinusoidal signal generator is connected with the input end of the quartz tuning fork; the input end of the preposed lock-in amplifier is connected with the output end of the quartz tuning fork; the input end of the control box is connected with the output end of the preposed lock-in amplifier, one output end of the control box is connected with the input end of the micro-nano motion arm, and the other output end of the control box is connected with the input end of the sample scanning stand; and the detector and / or the light source are / is connected with the near-field optical probe. The multiple-degree-of-freedom near-field optical microscope has an optical resolution capability beyond the diffraction limit as well as large-scale mobile flexibility and multi-degree-of-freedom operation capability, occupies a small space, and is very convenient to be combined with other microscopic characterization methods.

The invention provides an optical imaging lens. Along the optical axis, from the object side of the optical imaging lens to the image side of the optical imaging lens, it includes: flat glass; the first lens, the image side of the first lens is concave; the second lens; the third lens; the fourth lens has a negative light Focal power; wherein, half of the Semi-FOV of the maximum field of view of the optical imaging lens satisfies: Semi-FOV>40°; between the effective focal length f1 of the first lens and the combined focal length f23 of the second lens and the third lens: -1.0

The invention discloses an optical system, a lens module and electronic equipment. The optical system sequentially comprises a first lens to a fifth lens with refractive power from an object side to an image side along an optical axis,and a diaphragm between a second lens and a third lens, wherein the first lens and the fourth lens have negative refractive power, the second lens, the third lens and the fifth lens have positive refractive power, the object side surface of the first lens, the image side surface of the second lens and the mirror surfaces of the third lens and the fifth lens are convex at a paraxial region, the image side surface of the first lens, the object side surface of the second lens and the mirror surface of the fourth lens are concave at a paraxial region, the optical system satisfies the following relational expressions that f12 / f35 is more than -2.5 and less than -1.5, f12 is the effective combined focal length of the first lens and the second lens, and f35 is the effective combined focal length of the third lens and the fifth lens. According to the invention, the surface type and the refractive power of the lens are reasonably designed, and the relational expression is met, so that the imaging quality is improved while the optical system meets the wide-angle imaging range.

The invention discloses a wide-field microscope. The wide-field microscope comprises a main machine, wherein the main machine is provided with a shell and an optical system arranged in the shell, andthe optical system comprises an inclined arranged large eyepiece, a planar spectroscope and a first spherical reflector, wherein the planar spectroscope and the first spherical reflector are sequentially arranged on an extension line of the center line of the large eyepiece; a second spherical reflector is arranged above the planar spectroscope, a first planar reflector is obliquely arranged belowthe planar spectroscope located on the extension line of the center line of the second spherical reflector, and a second planar reflector is arranged on the side, close to the large eyepiece, of thefirst planar reflector; and a third planar reflector is arranged below the second planar reflector, a fourth planar reflector is arranged on the side, close to the large eyepiece, of the third planarreflector, and a common objective lens is arranged below the fourth planar reflector. Compared with the prior art, the wide-field microscope can effectively reduce eye discomfort and body fatigue of an operator for observing for a long time and improve work efficiency.

The invention relates to a focusing mechanism and a lens comprising same, wherein the focusing mechanism comprises a first lens barrel, a second lens barrel which is in sliding connection with the first lens barrel, an adjusting assembly for adjusting the position of the second lens barrel relative to the first barrel; and a force application assembly arranged between the first lens barrel and thesecond lens barrel. The force application assembly comprises a first component and a second component, which are mutually exclusive or attract each other. By the adoption of the force applying assembly, the moving position of the lens in the focusing process is accurate, and the imaging of the lens being stable and clear is guaranteed. A gap, between the first lens barrel and the second lens barrel, generated in the focusing process is eliminated by repulsive force or attraction force generated by the force applying assembly, and the backlash phenomenon in the lens focusing process is eliminated. By adopting the magnetic first component and the second component, abrasion is not generated between the first component and the second component, and the service life is long.

The invention provides a pick-up lens. The pick-up lens sequentially comprises, from a light incident end to a light emergent end, a first lens; a second lens; a third lens; a fourth lens, wherein the surface, close to the light incident end, of the fourth lens is concave; a fifth lens, wherein the surface, close to the light incident end, of the fifth lens is convex, and the surface, close to the light emergent end, of the fifth lens is concave; a sixth lens with negative refractive power; a seventh lens; an eighth lens, wherein the surface, close to the light emergent end, of the eighth lens is concave; the distance TTL from the surface, close to the light incidence end, of the first lens to the imaging face of the camera lens on the optical axis and the half ImgH of the diagonal length of an effective pixel area on the imaging face meet the conditions that TTL / ImgH is smaller than 1.3 and ImgH is larger than 7.5 mm. The central thickness CT7 of the seventh lens on the optical axis and the air interval T78 of the seventh lens and the eighth lens on the optical axis meet the following condition: 0.5 < CT7 / T78 < 1.0. The problem that in the prior art, the pick-up lens is poor in imaging quality is solved.