199 results about "Optical focusing" patented technology

The embodiment of the invention discloses a light path device of a visible near-infrared detector array test calibration system, and the light path device of the visible near-infrared detector array test calibration system comprises a single photon source module which is used for generating near-infrared photons; the visible light generation module is used for generating visible light; and the optical focusing module adopts a coaxial light path and is used for focusing the photons output by the single photon source module and the visible light output by the visible light generation module to a photosensitive surface of the detector array to be tested.

The invention discloses a non-contact drunk driving detection method and system adopting a large-linewidth tunable laser, and relates to the technical field of laser detection, and the method comprises the steps: collecting transmission light signals and corresponding electric signals under different linewidth conditions through experiments, synchronously recording experiment parameters, obtaining an original data set, carrying out the preprocessing of the original data set, and carrying out the detection of drunk driving. Generating a training set, a verification set and a test set, and training a BP (Back Propagation) neural network to obtain a pre-trained noise suppression model; the method comprises the following steps of: generating a wavelength-tunable modulated laser beam by adopting a large-linewidth tunable laser, directionally projecting the modulated laser beam into a vehicle cab, and enabling laser to penetrate through the cab space and carry alcohol gas concentration information to obtain a transmission light signal; focusing the transmission light signal to a photoelectric detector through an optical convergence device to obtain a noisy electric signal, inputting the noisy electric signal into a pre-trained noise suppression model, and outputting a de-noised electric signal; performing synchronous demodulation and harmonic analysis on the de-noised electric signal by using a phase-locked amplification detection technology, extracting a second harmonic signal amplitude associated with the modulation frequency, and determining a second harmonic signal characteristic amplitude through peak detection; according to the calibration relation between the second harmonic signal characteristic amplitude and the alcohol gas concentration, the concentration value of the alcohol gas in the cab is calculated in an inversion mode through a least square fitting algorithm, an alcohol concentration threshold value is set, the drunk driving condition of a driver is judged, a detection result is generated, and an alarm signal is output.

The invention discloses a method for measuring the focus heat effect and the heat damage of a Raman probe. The method comprises the following steps: S1, establishing a stable laser output system, and configuring a proper optical focusing system; s2, heating the standard sample to a target temperature according to a preset step length, keeping for several minutes at each target temperature, and performing spectral measurement on the standard sample by using a Raman spectrometer; s3, in the Raman spectrum measurement process, carrying out real-time temperature monitoring on the surface of the standard sample, and carrying out normalization processing on collected Raman spectrum data; s4, establishing a quantitative relation model between the relative intensity change characteristic # imgabs0 # of the Raman spectrum and the temperature T; and S5, predicting the temperature T of the standard sample under the current preset parameters according to the model, and adjusting the measurement parameters according to the prediction result, so that the predicted temperature T is lower than the temperature threshold value of the to-be-detected sample. According to the method, the thermal effect of the laser can be predicted before Raman measurement, proper measurement parameters are set in advance, and thermal damage to a measured sample is avoided.

The invention discloses an optical thin film thickness monitoring device and an optical thin film coating system, and belongs to the technical field of vacuum coating. A workpiece disc of the optical film thickness monitoring device is provided with a monitoring hole group, the monitoring hole group comprises a first through hole, a second through hole and an interval shielding area, and a film coating monitoring piece is arranged in the first through hole; the irradiation light source is used for emitting light signals to the monitoring hole group; the receiving assembly comprises a light converging element and at least two grating monochromators. The actual physical or optical thickness of the thin film can be calculated by monitoring the transmission or reflectivity of multiple wavelengths and combining the dispersion of the material, and the precision is higher than the precision of monitoring the thickness of the single-wavelength thin film. A plurality of grating monochromaters respectively and correspondingly monitor one wavelength, each grating monochromator can freely select the wavelength, the wavelength selection range is wide, and the problems that the monitoring wavelength is changed and the positioning precision deviation is large in the same grating monochromator are solved. According to the invention, the optical film thickness measurement precision in the online monitoring film coating process can be improved, and the film coating success rate is improved.

The utility model discloses a hollow-core optical fiber confinement gas excitation and collection device. The device comprises a laser system, an optical focusing system, an ion separation collecting electrode, a hollow-core optical fiber and a metal steam supply system, a laser system and an optical focusing system are arranged near one end of the hollow-core optical fiber, a metal steam supply system is arranged near the other end of the hollow-core optical fiber, laser emitted by the laser system is focused on a laser incidence end face through the optical focusing system, and the metal steam supply system is connected with the metal steam incidence end face and outputs metal steam into the hollow-core optical fiber. An ion separation collecting electrode is arranged near the periphery of the laser incident end surface; during collection, the laser system emits laser, the hollow-core optical fiber serves as a working cavity, the metal steam supply system conveys metal steam, the metal steam and the laser collide with each other in the working cavity, metal atoms absorb photon energy and are excited into metal ions, and the ion separation collection electrode separates and collects the metal ions.

The invention discloses a camera module and a motor thereof. The motor for the camera module comprises a base, a movable assembly, a driving assembly and a focusing circuit board, the movable assembly comprises an anti-shake carrier which is movably mounted on the base and a focusing carrier which is movably mounted in the anti-shake carrier; the base and the movable assembly form a carrier assembly; the driving assembly comprises a focusing driving assembly and an anti-shake driving assembly, and the focusing driving assembly is configured to drive the focusing carrier to move along the optical axis direction relative to the anti-shake carrier so as to perform optical focusing; the anti-shake driving assembly is configured to drive the anti-shake carrier to move relative to the base in the first axis direction and the second axis direction perpendicular to the optical axis direction. The focusing circuit board is electrically connected to the focusing driving assembly, and at least part of the focusing circuit board extends above the carrier assembly in the horizontal direction.

The invention belongs to the technical field of water-jet guided laser processing, and relates to a water-jet guided laser optical path accurate control method which comprises a laser generator, an optical focusing system, a water-jet guided system, an optical detection system and a control system. The method comprises the following steps: 1, controlling an optical focusing system; 2, controlling a water guide system; 3, controlling an optical detection system; 4, designing a control system; 5, after the water-jet guided laser debugging process is completed, product machining is conducted; by accurately controlling the optical path of the water-guided laser, the laser beam can be focused to a smaller area, the machining precision is improved, and the machining precision can be improved to the submicron level; therefore, the control precision of the water-guided laser optical path is higher, the machining time can be shortened, the machining efficiency is improved, and thermal damage in the machining process is reduced.

The invention discloses a bifocal plane imaging system and a multidirectional beam splitter, and the bifocal plane imaging system comprises an illumination module which is configured to provide an illumination light beam for a to-be-measured piece, and the illumination light beam forms a signal light beam on the surface of the to-be-measured piece; the objective lens assembly is configured to receive the signal light beam and optically focus on the second to-be-measured layer; the light splitting assembly is arranged on an emergent light path of the objective lens assembly and is configured to split the signal light beam to form a first light beam transmitted in a first direction and a second light beam transmitted in a second direction; the first imaging module is configured to receive the first light beam in a first direction and optically focus the first light beam on a first to-be-measured layer through focusing processing, and the first light beam is used for imaging the first to-be-measured layer; and the second imaging module is configured to receive a second light beam in a second direction, and the second light beam is used for imaging a second layer to be measured. According to the invention, the detection efficiency of the two to-be-detected layers can be improved.

The present invention discloses a device and method for detecting brain natriuretic peptide, a serological marker secreted by acute myocardial infarction, based on surface enhanced Raman scattering technology. First, the antibody molecules corresponding to BNP are modified by nano-imprinting and chemical bonds to complete the preparation of SERS substrate chip; during the volatilization process of the BNP antibody solution, a collapsed finger array structure with hexamers or polymers as structural units is formed. The present invention can simultaneously achieve high selectivity and high sensitivity SERS detection of BNP. By dropping serum into a coupling structure substrate pre-placed in a biological carrier chip and directly optically focusing the Au finger surface, high selectivity and high sensitivity measurement of specific BNP in a liquid serum environment within 5 seconds can be achieved.

The invention belongs to the technical field of garment production and processing, and particularly relates to a garment self-focusing laser pocket opening machine which comprises a laser generation module, a motion control module, a position recognition module and a control system, the laser generation module is composed of a laser generator, a laser power source and an optical focusing system, and the laser generator generates laser beams with specific wavelength and power; the laser power supply provides stable energy, the control system and the laser generation module are integrated together, the motion control module adopts a mechanical transmission mechanism to drive a clamp and clothes to move together according to a preset path to achieve an accurate cutting track, the clamp is used for fixing clothes cloth, and the position recognition module is used for detecting the position, posture and size of the clothes cloth. And the position and the shape of the bag opening are determined through an image recognition algorithm, and accurate position information is provided for laser cutting. According to the bag opening cutting device, bag opening cutting is rapidly completed through the precise motion control module, the efficient laser generation module and the position recognition module.

A laser scribing method for perovskite thin-film solar cells is provided, in which a linearly polarized Gaussian beam is emitted by a laser, and converted into a circularly polarized beam through a quarter-wave plate. The circularly polarized beam is expanded to a target diameter by a beam expander system to obtain a target expanded beam. The target expanded beam is adjusted by an optical path adjustment system to enter a diffractive optical element (DOE) shaping module for beam shaping to obtain a shaped beam. The shaped beam is focused by an optical focusing module to obtain a focused beam with the focus on a surface film of a to-be-processed product, and the to-be-processed product is moved such that a groove is scribed thereon. A laser scribing device is also provided.

An eye tracking system for a head-mounted device includes an imaging assembly and an illumination assembly. The imaging assembly is configured to optically focus light from an object plane of an eye onto an image plane of an image sensor, and the illumination assembly is configured to optically project light from an illumination source onto the object plane of the eye. The imaging assembly is configured with an imaging angle coding mapping for optical relay coupling imaging. The illumination assembly is configured with an illumination angle coding mapping for optically coupling a projection.

The invention provides a graphene-based Q-switched neodymium ruthenium tungstate human eye safety laser system, and relates to the technical field of laser, and the system comprises a laser diode pumping source control module which is used for controlling the output power and the on-off state of a laser diode pumping source; the optical focusing coupling control module is used for adjusting the focusing position and focal length setting of optical focusing coupling; and the resonant cavity control module is used for solving a final solution by using the whale optimization algorithm and adjusting the positions and angles of an input cavity mirror and an output cavity mirror of the resonant cavity so as to optimize the optical performance of the resonant cavity. The passive Q-switched neodymium-doped potassium ruthenium tungstate laser based on the graphene absorber is comprehensively and accurately controlled by integrating a multifunctional module, the performance of the laser is optimized, the output stability and adaptability are improved, and efficient and reliable laser pulse generation is ensured.

The invention relates to the technical field of nondestructive testing, and discloses an online rapid nondestructive testing device and method for spot welding quality of a metal film, and the online rapid nondestructive testing device comprises an infrared high-speed imaging module, an eddy current heating and measuring module, a synchronous control module and a motion compensation module. A micro-distance optical focusing lens is matched with a high-speed infrared camera, and a thermal imaging sequence of a welding spot area is collected at a preset frame frequency. The eddy current module adopts a composite multi-frequency PCB coil assembly, a heating coil layer and a measuring coil layer are integrated, the heating coil layer covers multiple rows of welding spots to achieve area heating, the measuring coil layer corresponds to the welding spots one to one, and dynamic power adjustment is achieved through a heating power controller. The synchronous control module coordinates the sequential relation of eddy current excitation, detection and infrared imaging, the motion compensation module corrects welding spot position deviation in real time through visual positioning, and the optical focusing precision is ensured. According to the invention, through synchronous acquisition and analysis of multi-modal data, rapid nondestructive detection of welding defects is realized, and the detection precision and the detection efficiency are improved.

The application discloses a 2 mu m wave band GHz solid mode-locked device based on electric regulation, belongs to the technical field of ultrafast laser and semiconductor device, and comprises a high-brightness fiber laser pumping source, an optical focusing coupling system for focusing and collimating the pumping source, a first input mirror for transmitting and reflecting the focused laser beam, a gain medium for generating and amplifying laser, a second input mirror and a third input mirror for reflecting the focused laser beam, and a two-dimensional Bi2O2Se electro-optic modulation device for modulating the laser beam. The application develops the two-dimensional Bi2O2Se electro-optic modulation device with low saturation flux, fast saturation recovery time and moderate modulation depth, so as to break through the technical barrier of solid GHz femtosecond mode-locked.

A retractable camera module is disclosed, comprising: a photosensitive assembly; and a retractable lens device held on the photosensitive path of the photosensitive assembly; wherein the retractable lens device includes: a first driving element, a second driving element, and an optical lens, the optical lens being mounted within the second driving element. In an operational state, the first driving element is configured to drive the second driving element to move along the photosensitive path, and the second driving element is configured to drive the optical lens to move along the photosensitive path to achieve optical focusing. Thus, the retractable camera module utilizes the advantages of different types of drivers in terms of driving performance to meet the optical performance adjustment requirements of the camera module, such as a relatively long focusing stroke and relatively high focusing accuracy.

The utility model belongs to an immune technology, and particularly relates to a single-molecule immunofluorescence analyzer which comprises a light source and a convergent lens, an optical channel is formed in the guide piece; the moving part is arranged on the outer side of the guide part and moves along the guide part under driving; the fixed part is used for fixing the convergent lens on the movable part, and light penetrating through the convergent lens penetrates through the optical channel; the transmission mechanism is used for converting rotation of the rotating mechanism into rotation of the moving part. The utility model has the advantages of high adjustment precision and the like, and is used in optical focusing.

A system and method are provided for imaging the full surface of an elongated object moving along its longitudinal axis using a single imaging device. The system includes a linear imaging device including an imaging sensor having a plurality of pixels and a lens between the imaging sensor and the object. The lens projects radiation from different circumferential sections of a circumferential perimeter band of the object along different imaging paths onto different pixel sets of the plurality of pixels of the imaging sensor to map the entire circumferential perimeter band onto the pixels of the imaging sensor. An adjustable image reflector in an imaging path between the linear imaging device and a circumferential section of the circumferential perimeter band of the object adjusts the optical focusing of the circumferential section on a corresponding pixel set of the imaging sensor.

A water-mist-penetrating temperature measurement system and method for steel hot rolling, the system including a water-mist-penetrating temperature measurement device, and the water-mist-penetrating temperature measurement device including a visible light guiding-tracking assembly, an optical focusing assembly, a dual-wavelength beam splitting assembly, a multi-source information processing assembly, and a display assembly; and the method including the steps of obtaining a dual-wavelength radiation signal and a visible light image signal of the object to be measured, processing the obtained dual-wavelength radiation signal and the visible light image signal, and detecting and processing an abnormally fluctuated temperature data.

The present invention relates to the technical field of three-phase flow detection, and provides a fluorescent fiber optic probe device for three-phase flow detection, comprising: a packaging shell; a sapphire probe disposed within the packaging shell; a connected small-diameter self-focusing lens and a large-diameter self-focusing lens located above the sapphire probe; an integrated fiber bundle structure divided into a transmitting fiber and a receiving fiber within a main cavity; a laser transmitting module connected to the transmitting fiber; a collimating lens located above the receiving fiber; a trapezoidal waveguide structure located above the collimating lens; a first optical focusing assembly and a second optical focusing assembly disposed side by side above the trapezoidal waveguide structure, with a reflective volume holographic grating disposed below the first optical focusing assembly; a first photoelectric conversion module and a second photoelectric conversion module; and a main control module. The device of the present invention can effectively avoid optical power attenuation caused by optical fiber splitting and filters, thereby ensuring optical signal transmission efficiency and detection accuracy.

The present invention relates to a method and apparatus for processing a workpiece (4), in particular to a method and apparatus for imprinting an anti-glare function through a laser pulse (100) of a laser (1), wherein the apparatus comprises: a laser (1), in particular a short pulse laser or an ultrashort pulse laser, configured to provide a laser beam (10) including a laser pulse (100); a first diffusion lens (2) and a second diffusion lens (2'), each configured to scatter the laser beam (10) and imprint a locally randomized intensity distribution on the laser beam (10) at a focal plane (12), wherein the first diffusion lens (2) and the second diffusion lens (2') sequentially scatter the laser beam (10); and at least one optical focusing system (3) configured to focus the laser beam (10) onto a focal area (120) within a focal plane (12) on the workpiece (4), wherein the laser beam (10) is applied to the workpiece (4) and consequently the workpiece is processed. The invention includes a progression device (5) configured to move a laser beam (10) and a workpiece (4) by one step (V) relative to each other, wherein the progression device includes a scanner device (50) having a first scanner element (500) and a second scanner element (502), the movement of the scanner elements (500, 502) generates one step, the second scanner element (502) includes a second diffusion lens (2'), and the movement of the scanner elements changes a locally randomized intensity distribution.

This invention relates to an instrument for cutting human or animal tissue, including an optical coupler. The cutting instrument includes - a femtosecond laser (1), - a shaping system (2) located downstream of the femtosecond laser (1) for forming a phase-modulated laser beam, - an optical scanner (4) located downstream of the shaping system (2), - an optical focusing system (5) located downstream of the optical scanner (4), and - a control unit (6) for controlling the shaping system (2), the optical scanner (4), and the optical focusing system (5). The instrument is characterized in that it further includes an optical coupler (3) between the femtosecond laser (1) and the shaping system (2), the optical coupler (3) including a photonic crystal fiber for filtering the phase-modulated laser beam (21) from the shaping system (2).

The invention discloses a fluorescent bead multi-photon property measuring device which is characterized in that a laser signal with a preset first wavelength is generated through an optical fiber laser, and a photonic crystal fiber converts the laser signal into a high-energy soliton laser signal with a preset second wavelength (in a target wave band range); then the high-energy soliton laser signal is accurately focused on a fluorescent bead sample through an optical focusing assembly, the fluorescent bead sample is effectively excited to generate a corresponding three-photon fluorescent signal, and finally a microscopic image and a three-photon emission spectrum of the fluorescent bead are obtained at the same time in combination with a microscopic imaging assembly and a spectrograph. Therefore, comprehensive measurement of the multi-photon properties of the fluorescent beads can be efficiently and accurately realized, and the measurement effectiveness and efficiency are improved. Besides, the device can also measure the multi-photon order and the relative multi-photon cross section of the fluorescent bead, and evaluates the photobleaching behavior and the light stability of the fluorescent bead in combination with the dynamic monitoring of the fluorescent signal along with time, thereby making up the defects of the related technology in the measurement of the multi-photon property of the fluorescent bead at the wave band of 1700nm.

This invention provides an optical signal collection method and an optical signal collection device. The method segments and focuses a target optical signal, receives the segmented optical signal through an interface unit of an optical signal receiving module, and matches the spread of the optical signal source with the spread received by the optical signal receiving module. This method achieves complete signal transmission between the optical signal source and the optical signal receiving module. The optical signal collection device includes an optical focusing structure and an optical signal receiving module. The optical focusing structure segments and focuses the optical signal, and the interface unit of the optical signal receiving module receives the segmented optical signal. By matching the spread of the optical signal source with the spread received by the optical signal receiving module, this invention ultimately achieves low-loss optical signal transmission. This invention has the advantages of high transmission efficiency, good transmission quality, simplicity, convenience, and strong reusability.

Device and method for evaluating fracture surfaces of two fracture partners (14, 30) comprising the steps of: providing an analysis system comprising a measuring device, having an image acquisition device (42, 44) with a lens (28) adjustable, in particular with regard to optical focus, for sensorially detecting a first fracture surface of a first fracture partner and an associated second fracture surface of a second fracture partner, wherein the measuring device is configured and set up to provide sensory information of the detected fracture surfaces, a sample holder for holding the first and / or second fracture partner, an illumination device (22) for illuminating the first and / or second fracture surface to be detected by the measuring device, a display device for visually displaying sensory information provided by means of the measuring device, and arranging the first and / or second fracture partner on the sample holder.Performing optical scanning, displaying information provided by the measuring device, evaluating the sensor information of the scanned first and second fracture surfaces.

The invention relates to the field of research, development and application of novel semiconductor sensing equipment, in particular to a carbon-based sensing system based on a high-integration narrow-band imaging array and a construction method of the carbon-based sensing system. According to the invention, the carbon-based photoelectric sensing array is prepared by a liquid phase method and a transfer method with high uniformity and expandability, and a carbon-based sensing system is constructed on the basis of the carbon-based photoelectric sensing array; the carbon-based sensing system comprises a multi-pixel carbon-based sensing array based on conjugated polymer / semiconducting carbon nanotubes / metallic carbon nanotubes, an electrical readout system and an optical focusing assembly. The 4096-pixel integrated photoelectric sensing array and the carbon-based sensing system constructed by the 4096-pixel integrated photoelectric sensing array are prepared by a whole set of optimized liquid phase deposition, spin coating and transfer processes for the first time, and the system has quick response and high photoelectric response capability and can realize high-integration-level and high-performance optical signal detection and high-quality imaging functions.

This invention provides a high signal duty cycle dual-optical frequency comb coherent anti-Stokes Raman imaging system, belonging to the field of coherent anti-Stokes Raman imaging technology. It solves the problems of low signal duty cycle and low measurement speed of traditional dual-optical frequency comb output pulses. The system includes a tunable repetition rate difference dual-optical frequency comb pulse generation module, an optical focusing and sample scanning module, and a data acquisition module. The tunable repetition rate difference dual-optical frequency comb pulse generation module generates two dual-optical frequency comb pulse beams, one with an adjustable repetition frequency and the other with a fixed repetition frequency. The pulse beam with the adjustable repetition frequency serves as the pump light, while the pulse beam with the fixed repetition frequency utilizes the nonlinear effect of highly nonlinear optical fibers to achieve spectral broadening and spectral frequency shift, obtaining Stokes light. This invention is applied to anti-Stokes Raman imaging.

Embodiments of the present disclosure relate to optomechanical transducer devices and corresponding methods. An exemplary device includes an optically transparent substrate having a first surface and a second surface; a piezoelectric film disposed on the first surface and oscillating in response to a light beam propagating through the substrate; at least one reflective facet facing the substrate and disposed at the piezoelectric film; and an optical element that receives the light beam at an input end and guides the light beam to an output end coupled to the second surface. The optical element includes an optical focusing path that focuses the light beam at a focal point of the piezoelectric film, and at least one optical collimation path that collimates the light beam onto at least one of the reflective facets. The optical element guides light reflected from at least one of the reflective facets to the input end, and the reflected light indicates the position of the optical element relative to the focal point.

The invention provides an optical lens, a camera module and an electronic device, the optical lens comprises a first lens group, a first prism and a second lens group which are sequentially arranged from an object side to an image side, the first lens group has positive focal power, the first lens group is a focusing lens group, and the first lens group is used for receiving light emitted into the optical lens; the first prism is used for reflecting the light from the first lens group at least twice; the second lens group has negative focal power, the second lens group is a focusing lens group, and the second lens group is used for receiving the light emitted from the first prism; wherein the optical lens can selectively move at least one lens group in the first lens group and the second lens group so as to realize optical focusing of the optical lens. The first lens group and the second lens group are focusing lens groups, and the optical lens can complete focusing through alternate movement of the two lens groups, so that the focusing stroke of a single lens group can be reduced, the movement precision of the lens groups can be improved, and the focusing precision of the optical lens can be improved.

The invention provides a transfer printing method and system for a cosmetic contact lens VU line printing machine, and the method comprises the steps: cleaning a flat steel plate, directly printing a pattern matched with a to-be-printed area of a cosmetic contact lens on the surface of the steel plate in an ink-jet manner, recognizing the center position of the ink-jet pattern through an optical focusing device, and locking the coordinate, and controlling the rubber head to adsorb the ink and then transferring the ink to the surface of the cosmetic contact lens, and finally performing surface curing treatment on the cosmetic contact lens. The system comprises a plurality of function modules which cooperatively execute the method. The ink jet mode is adopted to replace a traditional laser etching machining steel plate, precise positioning is achieved through optical focusing, various pattern transfer printing of cosmetic contact lenses is adapted, and technical management and control of the whole transfer printing process are improved.