Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

144 results about "Optical energy" patented technology

Method for quality inspection of etching paste material based on spectral response difference

A method for quality inspection of an etching paste material based on a spectral response difference, including: identifying a position of density mutation boundary through spectral collection and density gradient analysis. Applying a specific frequency beam to obtain the resonance response parameter, generating stress field reconstruction data. Performing a reverse optical tracking to obtain a defect formation path, generating degradation prediction data. Establishing a self-organizing optical monitoring grid, to form a hierarchical spectral fingerprint library. Constructing a multi-point linked defect blocking network, to form an interconnected optical energy field. Monitoring a cooperative response to obtain network stability data, Identifying abnormal position coordinates based on a material quality grade and the network stability data, obtaining the abnormal position coordinates. Performing a phase adjustment to obtain a phase difference spectral set, conducting a phase comparison marking on the abnormal position coordinates, completing the quality inspection of the etching paste material.
Owner:JIANGSU SAMBON TECHNOLOGY CO LTD

Power control method, system and equipment of optical storage and charging station and medium

The invention discloses a power control method, system, equipment and medium for an optical storage and charging station, and belongs to the field of optical energy storage. A health degree factor is determined based on collected equipment operation data; determining a predictive factor based on the collected photovoltaic data; based on the power allocation weight and operation factors, a weight function is established to calculate the instruction weight of each device, and the operation factors comprise a planned maintenance factor, a sudden failure factor, an energy storage correlation factor, a health degree factor and a prediction factor of the parallel devices; calculating to obtain a power instruction of each parallel device; and controlling the parallel equipment to operate according to the power instruction through the station controller. According to the method, the bearable degree of the equipment is measured by calculating the dynamic weight comprehensively obtained on the basis of the health factor, the prediction factor, the maintenance factor, the sudden failure factor and the energy storage correlation factor, and the power instructions with inconsistent stagger degrees are distributed according to the actual operation condition, so that the operation stability is improved.
Owner:CHINA CONSTR SCI & IND CORP LTD

Characterizing rock properties with optical energy sources in a wellbore

A downhole tool system includes a bottom hole assembly that includes a connector; a laser head; a light source; a sensing assembly; and a controller. The connector is configured to couple to a downhole conveyance run into a wellbore to a reservoir rock formation. The laser head is configured to emit a laser beam toward the reservoir rock formation at a fixed frequency. The light source emitter is configured to emit a light beam toward the reservoir rock formation. The sensing assembly includes at least one optical receiver configured to (1) receive a reflected laser beam and a reflected light beam, and (2) interfere the reflected laser beam with the reflected light beam. The controller is configured to perform operations including generating a speckle interferogram based on the interference; and determining an angular displacement and an axial displacement of the wellbore based on the speckle interferogram.
Owner:SAUDI ARABIAN OIL CO

Light storage and charging-UPQC multi-port cycle calendar life cost collaborative energy management method

The invention discloses an optical storage charging-UPQC multi-port cycle calendar life cost collaborative energy management method, and belongs to the technical field of electric energy quality management and optical energy storage collaborative control of a power distribution and utilization system. The invention aims to provide a light storage and charging-UPQC multi-port cycle calendar life cost collaborative energy management method which introduces a photovoltaic flexible power regulation and'cycle + calendar 'combined life modeling mechanism and embeds energy storage life cost into a model predictive control (MPC) framework on the premise that UPQC undertakes power quality compensation. According to the invention, a model predictive control (MPC) framework is adopted to carry out cooperative energy management on photovoltaic flexible output, energy storage power distribution and charging load limit, and when the SOC approaches a boundary, photovoltaic load reduction and power change rate limitation are automatically triggered. According to the method, energy storage deep circulation and excessive loss can be actively inhibited while the energy balance of the direct-current bus is maintained, and the comprehensive targets of electric energy quality treatment, energy stabilization and energy storage life protection are achieved.
Owner:ZHEJIANG SHUANGCHENG ELECTRIC CO LTD +1

Time-of-flight image sensor with quantum dot photodetectors

A time-of-flight (ToF) sensor includes a photodetector array and a processing circuit. The photodetector array includes a plurality of photodetectors wherein each photodetector of the photodetector array includes a silicon-based, light-sensitive diode. Each silicon-based, light-sensitive diode includes a photosensitive layer comprising a plurality of quantum dot particles sensitive to a near infrared (NIR) region of an electromagnetic spectrum, wherein the plurality of quantum dot particles converts optical energy into electrical energy to generate an electrical current in response to receiving NIR light having a wavelength in the NIR region. The processing circuit is configured to receive the electrical current and calculate a time-of-flight of the received NIR light based on the electrical current.
Owner:INFINEON TECHNOLOGIES AG

Etching paste material quality detection method and system based on spectral response difference

The invention provides a spectral response difference-based etching paste material quality detection method and system. The method comprises the following steps of: decomposing and identifying an internal density abrupt change boundary position of a material through multiband spectral chromatography; applying a light beam with a specific frequency to a sudden change boundary to perform resonance excitation to reconstruct stress field distribution, determining a stress concentration point, performing reverse optical tracking to form a defect path, and establishing a self-organizing optical monitoring grid; performing density self-adaptive adjustment on the grids, and forming a graded spectrum fingerprint database through differential spectrum excitation to generate a material state boundary recognition standard; phase change critical point detection is carried out based on an identification standard, and a pulse light beam is applied to excite surface deformation to construct a multi-point linkage defect blocking network; and performing defect analysis on the network to form an interconnected optical energy field, monitoring the energy field to determine an abnormal position, and performing phase comparison marking through a phase difference spectrum group to complete quality detection of the etching paste material, so that accurate identification and intelligent quality classification of internal defects of the material are realized.
Owner:JIANGSU SENBIAO TECH CO LTD

Determining wellbore displacement with optical energy sources in a wellbore

A downhole tool system includes a bottom hole assembly that includes a connector, a laser head, a light source emitter, and a sensing assembly. The connector is configured to couple to a downhole conveyance run into a wellbore to a reservoir rock formation. The laser head is configured to emit a laser beam toward the reservoir rock formation at a fixed frequency. The light source emitter is configured to emit a light beam toward the reservoir rock formation. The sensing assembly includes at least one optical receiver configured to (1) receive a reflected laser beam and a reflected light beam, and (2) interfere the reflected laser beam with the reflected light beam to generate an interferogram. The system includes a controller configured to perform operations including determining one or more wellbore characteristics based on the interferogram.
Owner:SAUDI ARABIAN OIL CO

Semiconductor laser array, optical communication transmitting module and communication equipment

The invention discloses a semiconductor laser array, an optical communication transmitting module and communication equipment, and the semiconductor laser array is characterized in that the light-emitting surfaces of a plurality of VCSEL units sharing the same substrate are provided with semi-spherical surfaces, equivalently, the light-emitting surfaces are provided with off-axis lenses, and emergent light beams are deflected towards the central axis of a laser matrix; the effect that the light beams of the multiple VCSEL units are coupled into the same position is achieved. In the optical communication transmitting module, light beams of a plurality of VCSEL units can be coupled into the same transmission optical fiber. The efficiency of receiving optical signals or optical energy by the single optical fiber core is improved, the data transmission rate and quality are improved, and the requirements of high-speed optical communication and short-distance large-capacity data transmission are met.
Owner:HANGZHOU KAIKAI TECHNOLOGY CO LTD +1

Method and apparatus for removing microvessels

A method of removing microvessels includes applying a burst of acoustic energy at a target location, applying a pulse of optical energy at the target location, and promoting cavitation at the target location by synchronizing an arrival of the burst of acoustic energy and the optical energy at the target location. The burst of acoustic energy has a pressure below 5.0 MPa. The pulse of optical energy at the target location has a fluence less than 100 mJ / cm2. At least a portion of the pulse is concurrent with the burst and the optical energy has an optical area that is overlapping with an acoustic area of the acoustic energy at the target location.
Owner:THE RGT UNIV OF MICHIGAN +1

Method of pulsed laser irradiation with reduced thermal damage

Optical energy for example, ultra-short laser beam pulses are delivered to a substrate by applying a temporal group 17 of optical pulses 16 to a region of the substrate 24. The temporal group 17 which
Owner:UNIV OF SOUTHAMPTON

Medical optical energy electronic scale

The utility model relates to the technical field of electronic scales, and discloses a medical optical energy electronic scale, which comprises an electronic scale body, the top of the electronic scale body is fixedly connected with a fixed column, the fixed column is internally provided with an inner groove, the inner groove is internally and rotatably connected with a rotating column, the rotating column is internally provided with a tray, and the tray is internally provided with a light source. Adjusting grooves are formed in the two sides of the rotating column correspondingly, pushing blocks are slidably connected into the adjusting grooves, inserting rods are fixedly connected to the sides, close to the interiors of the adjusting grooves, of the pushing blocks, and arc blocks are fixedly connected to the two sides of the inner wall of the inner groove correspondingly. According to the medical optical energy electronic scale, a worker aligns the bottom of a tray to the interior of a rotating column and inserts the tray into the rotating column, meanwhile, the rotating column is rotated to drive a push block and an insertion rod to move synchronously, an arc block makes contact with the thick end of the arc block, and the arc block pushes the push block to drive the insertion rod to be inserted into an insertion hole. Therefore, workers can replace and fasten the tray conveniently.
Owner:SHENZHEN UNIQUE SCALES CO LTD

Display device

The display device comprises a support component, a display screen connected with the support component, the display screen being integrated with a light modulation element, the support component comprising an image generating device and a free curved surface device, wherein the image generating device is used for generating an image and projecting the image to the free curved surface device based on a first incident direction; the free curved surface device is used for modulating the direction of the image light to deflect the first incident direction to a first exit direction and projecting the image to the light modulation element based on the first exit direction; and the light modulation element is used for assisting the display screen to display the image. The display field of view of the display device can be effectively improved without introducing too many additional components, so that the image display effect can be effectively improved, and the image light can be directly displayed after the direction of the image light is modulated, so that the optical energy loss can be greatly reduced and the visual imaging effect of the image light can be improved.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD

Base plate skate structure and mouse using same

The present application relates to the technical field of mouses, and in particular to a base plate skate structure and a mouse using same. The base plate skate structure comprises a connecting plate having a stable structure extending outward, the mouse is mounted at the top of the connecting plate, and regions for skates to be mounted are provided at the bottom of the connecting plate; an opening for a mouse displacement sensor to receive optical energy so as to work normally is formed in the connecting plate; the outer contour of the bottom surface projection of the connecting plate comprises three points, at least one of the points is located on the outer contour of the bottom surface projection of the stable structure, and the ratio of the area of a triangle formed by connecting lines of the three points to the area of the outer contour of the bottom surface projection of the connecting plate is greater than 0.5. In the present application, by constraining and defining the ratio of the area of the triangle formed by the connecting lines of the three points to the area of the outer contour of the bottom surface projection of the connecting plate, and the size and distribution of the skates, the mouse skates are arranged at the optimal position of the bottom of the mouse to counteract the flipping torque during the movement of the mouse, effectively reducing the variation in the center of resistance of the mouse, and improving operational stability, accuracy, and portability.
Owner:PAN JUNLIN

Thin film photovoltaic structure and manufacturing method thereof

ActiveUS12495621B2Fill factorThin membrane
A thin film photovoltaic structure has a substrate, a first conductive layer, a photovoltaic layer, a second conductive layer, multiple serial connection conductive layers and multiple first insulating areas. By using the serial connection conductive layer, each width between each adjacent serially connected photovoltaic structures is reduced, and an effective area of the thin film photovoltaic structure for collecting optic energy is increased, thus enhancing a geometry fill factor of the thin film photovoltaic structure. Further, by using the serial connection conductive layer and the first insulating area to form contact overlap areas in an overlapping arrangement, it can effectively protect conductive areas in the first conductive layer when etching the second conductive layer during the manufacturing process, which prevents the conductive areas from being damaged to not act as electrodes, and efficiently increases a manufacture yielding rate of the thin film photovoltaic structure.
Owner:WAYS TECHNICAL CORP LTD

Multi-wavelength distributed feedback laser

In one embodiment, a distributed feedback laser includes a laser comprising a waveguide, the waveguide having a variable width from a first end to a second end, the laser to generate optical energy of a plurality of lasing wavelengths. Other embodiments are described and claimed.
Owner:INTEL CORP

Wall-mounted multifunctional optical energy clock

The utility model relates to the technical field of endocrine body fluid inspection clocks, in particular to a wall-mounted multifunctional optical energy clock which comprises a clock shell, a clock dial and a wall-mounted component, the wall-mounted component is arranged on one side of the clock shell and rotatably connected with the clock shell, the clock dial is arranged on the inner side of the clock shell, and the clock dial is rotatably connected with the wall-mounted component. The face, away from the wall-mounted assembly, of the clock disc is the front face, pointers are arranged on the front face of the clock disc and rotationally connected with the clock disc, number marks and scale marks are arranged on the edge of the front face of the clock disc, the scale marks correspond to the number marks, and film photovoltaic or organic photovoltaic layers are arranged on the surfaces of the number marks, the scale marks and the pointers. A display screen is arranged on the front of the dial, an ambient light sensor is arranged at the joint of the pointers, and a lithium battery module is arranged on the back of the dial; according to the utility model, the clock can be driven by light energy to operate, and redundant energy is stored, so that the clock can be normally used in rainy days, and the trouble of battery replacement is avoided.
Owner:HUIZHIBO CULTURE DEVELOPMENT (SHENZHEN) CO LTD

Decorative aperture and earphone

The utility model relates to the technical field of earphones, in particular to a decorative aperture and an earphone. A decorative aperture includes a decorative inner cover; the first circuit board is arranged on the decorative inner cover; a light guide ring, a reflective lens and a semi-transparent catadioptric lens are arranged in the decorative inner cover; the decorative outer cover is arranged on the decorative inner cover; and the light source on the first circuit board is emitted to the light guide ring. When the light source emits light, under the joint cooperation of the light guide ring, the reflective lens and the semi-transparent catadioptric lens, a part of light can be emitted from the semi-transparent catadioptric lens, a part of light is reflected to the reflective lens from the semi-transparent catadioptric lens and then is emitted from the semi-transparent catadioptric lens, and parallel light is imaged in human eyes and is not on the same plane. In the light reflection process, the light intensity is gradually weakened, so that a plurality of light rings which are sequentially weakened in brightness and are overlapped in parallel can be seen in vision, a three-dimensional effect is generated, and the light ring is more attractive and cool.
Owner:SHENZHEN AONI ELECTRONICS IND

Systems for controlling therapeutic laser pulse duration

The invention provides a therapeutic laser system, comprising: a contact cooling element comprising a cooling window configured to directly contact a first skin area of a patient, wherein the cooling window comprises a thermally conductive material that is transmissive to infrared energy; a laser configured to provide a therapeutic laser pulse to a target skin area within the first skin area; a temperature sensor configured to sense a temperature of the target skin area; and a controller configured to: determine that the surface temperature of the target skin area has been cooled from a first surface temperature to a second surface temperature prior to initiating application of a therapeutic laser pulse to the target skin area; initiate the application of a therapeutic laser pulse to the target skin area through the cooling window at a first timepoint, wherein the pulse comprises optical energy having a wavelength within a range of from 1700 nm to 1740 nm, in particular wherein the wavelength is about 1727.5 nm; determine a surface temperature of the target skin area a plurality of times during the application of the therapeutic laser pulse based on infrared energy radiated from the target skin area through the cooling window; and terminate the application of the therapeutic laser pulse to the target skin area at a second timepoint based at least in part on the plurality of surface temperature determinations, wherein each of the plurality of surface temperature determinations occurs during a single therapeutic laser pulse having a pulse duration comprising the period from the first timepoint to the second timepoint.
Owner:CUTERA

Cooperative control method and device for multi-point distributed optical storage, and storage medium

The invention discloses a multi-point distributed optical storage cooperative control method and device and a storage medium, and relates to the technical field of optical storage cooperative control, and the method comprises the steps: building an active anti-interference control model based on a virtual synchronous generator control principle according to the device parameters of each distributed optical storage system; constructing a voltage cooperative control model based on the Ressel invariance theorem; constructing an energy storage cooperative control model based on the energy storage charge state time sequence dependency relationship; a state space sharing strategy is utilized to associate the voltage cooperative control model and the energy storage cooperative control model to construct a cooperative control model; outputting an active disturbance rejection control strategy based on the active disturbance rejection control model; based on the disturbance elimination result, judging whether to call a cooperative control model to output a cooperative control strategy according to the power grid real-time operation data; and executing distributed optical storage control according to the active disturbance rejection control strategy or / and the cooperative control strategy. The method has the beneficial effect that the stability and adaptability of cooperative control of the distributed optical storage system are improved.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER CO LTD NINGBO POWER SUPPLY CO

Laser apparatus for treatment of a cataractous lens

PendingUS20250345208A1Laser surgeryDiagnostics using spectroscopyCataractous lensAcoustics
An apparatus for aiding the removal of cataracts in which an optical fiber delivers sufficient optical energy of the correct wavelength, pulse duration to achieve controlled non-thermal and non-acoustic dissolution of hard cataract tissue.
Owner:LIGHT MATTER INTERACTION INC

An optical system

The invention relates to an optical system (10) comprising an energy input terminal (11) receiving optical energy from an optical energy source, a converter (12) configured to convert an analog electrical signal into a digital electrical signal, and at least one optical circuit (13) arranged electrically in series between said energy input terminal (11) and said converter (12). The distinguishing feature of the invention is that said optical circuit (13) comprises at least one optical receiver (131) including at least one electrode configured to convert the optical energy received from the energy input terminal (11) into an analog electrical signal; at least one resonance circuit (132) including a coil, a capacitor, and a resistor connected in parallel to one another and configured to process the electrical signal received from said optical receiver (131); and at least one amplifier (133) configured to amplify the processed electrical signal received from said resonance circuit (132).
Owner:QUARK OPTICAL YUKSEKTEKNOLOJI ANONIM SIRKETI

Determining wellbore displacement with optical energy sources in a wellbore

PCT designated stageWO2025221908A1SurveyConstructionsLight beamOptical energy
A downhole tool system includes a bottom hole assembly that includes a connector, a laser head, a light source emitter, and a sensing assembly. The connector is configured to couple to a downhole conveyance run into a wellbore to a reservoir rock formation. The laser head is configured to emit a laser beam toward the reservoir rock formation at a fixed frequency. The light source emitter is configured to emit a light beam toward the reservoir rock formation. The sensing assembly includes at least one optical receiver configured to (1) receive a reflected laser beam and a reflected light beam, and (2) interfere the reflected laser beam with the reflected light beam to generate an interferogram. The system includes a controller configured to perform operations including determining one or more wellbore characteristics based on the interferogram.
Owner:SAUDI ARABIAN OIL CO +1

Optical heater

An optical heater 100 converts optical power into thermal energy and includes a housing 130, an associated optical cable 110, 112 and a fastener 133 to attach the optical heater to a chamber 310. In use, the chamber receives a substance to be heated. The optical cable is designed to receive light from an optical source, and the optical source may be a passive source such as a sun light collector, or an active source such as a lamp. The optical heater and associated chamber may be part of a heating system with a boiler 300 in which cold water is received at an inlet 320, heated by the optical heater and hot water is delivered via an outlet 330. The optical heater may include a heating target 120 and the target may function as a dispersive lens that allows the collected optical energy to be dispersed to the material to be heated, or the target may heat up and dissipate the heat by conduction and convection. The housing may be made of at least two parts, and a first part 131 may be made of a metal or a metal alloy material, such as brass, and a second portion 132 may be made of a transparent material such as glass or plastics.
Owner:OBJEXS LTD

Three-mode immunochromatography detection system based on bowl-shaped COF

The invention relates to the technical field of immunodetection, and discloses a tri-modal immunochromatography detection system based on bowl-shaped COF, the tri-modal immunochromatography detection system comprises a signal marker ABCPP, an immune probe, an LFIA test strip and a signal detection module; the signal marker ABCPP is composed of a bowl-shaped covalent organic framework, an aggregation-induced luminophor and mesoporous palladium-platinum nanoparticles. According to the invention, fluorescence enhancement of AIEgens and colorimetric and photothermal effects of mPdPt NPs are creatively integrated on a bowl-shaped COF single platform; the bowl-shaped COF not only serves as an optical cage to remarkably enhance fluorescence emission of BTDTA through space limitation, but also serves as optical energy gathering to enhance interaction between light and substances. In addition, energy transfer between the internal AIGens and the external mPdPt NPs synergistically amplifies the photothermal effect, so that the photothermal conversion efficiency is remarkably improved.
Owner:LUDONG UNIVERSITY

Optical fiber beam combining method

The invention discloses an optical fiber beam combination method, and relates to the technical field of optical fiber beam combination, and the method comprises the following steps: S1, selecting a plurality of optical fiber units to be combined, the optical fiber units being single optical fibers and / or combined optical fibers; s2, asynchronous coupling is carried out on a plurality of optical fiber units to be combined, in asynchronous coupling, two optical fiber units are combined, an output optical fiber after beam combination is used as an optical fiber unit and then combined with another optical fiber unit, and the rest can be done in the same manner until beam combination of all optical fiber units is completed; s3, packaging protection is carried out on the beam combining area; according to the invention, through an asynchronous coupling mode, the plurality of optical fiber units which are concentrated together for coupling are spatially dispersed, so that the problem of heat concentration is avoided, the upper limit of optical fiber coupling energy can be broken through, and the optical fiber units can be infinitely superposed within the limit of optical energy which can be borne by the optical fiber.
Owner:SUZHOU LANMU JINGRONG TECHNOLOGY CO LTD

Devices, systems, and methods for ultrasound therapy

A system may include an ultrasound transducer. A system may include a catheter for insertion into a body lumen of a patient, the catheter including a distal end. A system may include a reflector connected to the distal end of the catheter, the reflector formed from a material having an acoustic impedance mismatch with an adjacent material. Optical energy may be delivered through the catheter.
Owner:UNIVERSITY OF KANSAS

An integrated tunable optical attenuator based on mode-circulation phase-shift and reflection

The application discloses an integrated tunable optical attenuator based on mode-circulating phase shift and reflection, comprising a single-mode optical waveguide, a 2*2 optical coupler, a high-order mode-circulating phase shifter and a waveguide optical reflector; wherein the 2*2 optical coupler is used for splitting the optical energy of the input port into two paths and outputting the optical energy into the high-order mode-circulating phase shifter, the high-order mode-circulating phase shifter uses the high-order mode selectivity of a mode coupler and the staggered arrangement of the mode order of a mode exchanger to make the optical field circulate in the high-order mode-circulating phase shifter for multiple times, thereby achieving the fold increase of the phase modulation efficiency; the waveguide optical reflector reversely couples the optical field modulated by the high-order mode-circulating phase shifter back to the high-order mode-circulating phase shifter, so that the optical field energy and information circulate in the high-order mode-circulating phase shifter for multiple times through the multimode optical phase shift arm, thereby further doubling the optical modulation efficiency.
Owner:XIDIAN UNIV

Defensive laser amplification system

A counter high-energy laser system directs high-intensity laser radiation back to a threat laser in the form of an ultra-short optical pulse (USP). The retro-directed USP induces permanent internal optical damage in the threat laser, thus disabling the threat by exploiting the very high optical gain at the source of an incoming laser thereby causing an injected pulse to grow exponentially in energy and peak power within the threat laser optical train until it reaches a damaging threshold. The existing optical energy from the threat laser system and stored in the laser beam from threat system is exploited thereby enabling the size, weight, and power of the counter laser system to be significantly reduced. The wavelength of the counter pulse is automatically matched to the threat.
Owner:APPLIED ENERGETICS INC

Optical fiber arrangement optimization method and device, equipment and storage medium

The invention relates to the technical field of optical fiber design, in particular to an optical fiber arrangement optimization method, device and equipment and a storage medium, according to the method, a deviation angle is calculated by correcting light cone parameters so that angle correction can be conducted on each optical fiber, and accurate matching between an optical fiber array and light cone distribution of all points of an image plane can be achieved; a single optical fiber captures echo signals of a specific view field, the view field range can be expanded without depending on increase of the number of detectors, and therefore the detector array scale is remarkably reduced while the wide view field detection capacity is guaranteed; besides, differentiated correction is carried out on each optical fiber, so that the field curvature and distortion phenomena of the optical system can be systematically compensated, and the optical fiber coupling efficiency of an edge view field is maintained at a relatively high level of a central view field; meanwhile, a fusion correction mechanism of software simulation data and actually measured data is adopted, so that the alignment deviation of the optical fiber central axis and the center of the light cone can be effectively reduced, the optical fiber coupling efficiency is greatly improved, the light energy loss is reduced, and the detection signal-to-noise ratio of weak echo signals is further improved.
Owner:JIHUA LAB

Characterizing rock properties with optical energy sources in a wellbore

A downhole tool system includes a bottom hole assembly that includes a connector; a laser head; a light source; a sensing assembly; and a controller. The connector is configured to couple to a downhole conveyance run into a wellbore to a reservoir rock formation. The laser head is configured to emit a laser beam toward the reservoir rock formation at a fixed frequency. The light source emitter is configured to emit a light beam toward the reservoir rock formation. The sensing assembly includes at least one optical receiver configured to (1) receive a reflected laser beam and a reflected light beam, and (2) interfere the reflected laser beam with the reflected light beam. The controller is configured to perform operations including generating a speckle interferogram based on the interference; and determining an angular displacement and an axial displacement of the wellbore based on the speckle interferogram.
Owner:SAUDI ARABIAN OIL CO