16 results about "Optical lever" patented technology

An optical assembly (17) has a primary optical rod (28) for guiding illumination light (4) along an illumination light beam path from a light source to a target field. An optical follower rod (29) of the optical assembly (17) is arranged in the illumination light beam path between the primary rod (28) and the target field. An intermediate image-generating optic (30) is arranged between the primary rod (28) and the follower rod (29). This generates an intermediate image between the primary rod (28) and the follower rod (29) along exactly one imaging dimension (y) perpendicular to the illumination light beam path. The result is an optical assembly in which the illumination light, after passing through the optical assembly, has a defined polarization state. The optical assembly can be part of an illumination optic and can, in particular, be part of an optical system of a projection exposure system containing such an illumination optic.

The invention discloses a pose detection device and method based on array type laser reflection focal spot monitoring, three collimation lasers are arranged in an array mode, an optical measurement method similar to an optical lever is adopted, when an optical element has height deviation, the positions of three light spots are equivalently changed on an imaging screen at the same time, and the position of the three light spots is detected. When the optical element has angle deviation, the distance of the light spots on the imaging screen is changed, and the change quantity is related to the laser incident angle, the light beam spacing distance and the element deflection angle, so that the light spot position image shot by the light spot imaging visual camera can be accurately positioned. And the pose information of the optical element located on the optical element positioning tool can be obtained through accurate inversion, so that accurate online detection of the angle and height information in the vertical plane of the optical element is achieved by bypassing a lateral view field, and then accurate grabbing of the optical element can be achieved in a matched mode.

We present a novel optical lever surface slope metrology tool employing a plurality of optical beams converging and crossing at the point close to the measured surface. The system increases the range and accuracy of the measurement.

The invention relates to a Young modulus measuring device and measuring method.The measuring device comprises an optical lever optical amplification system and a large and small container equal-volume liquid amplification system, the amplification factor is improved, and therefore the accuracy of a measuring result is effectively improved; the layout that a tester and a scale telescope need to be separately arranged on two desks in a traditional optical lever method is abandoned, the problems that the traditional method occupies a large space and is limited by the space of a laboratory are thoroughly solved, and the method is suitable for small and medium-sized laboratories and teaching scenes where multiple groups of experiments are parallel; and meanwhile, the operation difficulty is reduced, the measurement efficiency and the experiment stability are effectively improved, and the equipment maintenance cost is also reduced.

The present application discloses a kind of core deformation optical monitoring system and method, to solve the problems that prior art cannot capture early key deformation of core sampling, measurement accuracy is insufficient and poor adaptability in situ.The present application integrates micro optical projection unit, high-speed imaging unit and environmental compensation unit in the inner wall of coring barrel, realizes optical lever amplification effect by 40°~50° projection imaging angle design;Dual-frequency grating monitoring is used, wherein low-frequency grating is used for large-scale deformation monitoring, and high-frequency grating is used for small deformation capture, combined with improved multi-frequency heterodyne phase demodulation algorithm, the small deformation of core radial and axial can be converted into accurate measurable phase change.The system is automatically started when the core enters the coring barrel, captures the whole process of stress release deformation in stages, does not need additional operation and can be integrated into standard coring process, and is suitable for geological exploration, oil exploitation and mine engineering and other fields.

The application discloses a weak magnetic field measuring system and method based on a torsion optical lever method, and belongs to the technical field of electromagnetic measurement. The system comprises a lead wire, a magnet assembly, a scale disc, an optical lever, a mirror piece, a laser emitter, a data recording device and a data processing unit. When the magnet assembly is twisted, the lead wire drives the magnet assembly to return to the initial position. When the magnet assembly is twisted, the optical lever and the scale disc are driven to rotate. The laser emitter and the data recording device are sequentially arranged on the side of the scale disc away from the torsion support, the mirror piece is fixedly installed in the middle of the optical lever, the laser emitter emits laser to the mirror piece, the laser is reflected on the scale line of the scale disc, and the data recording device is used for recording the light spot position of the laser on the scale line. The data processing unit calculates the magnetic field intensity of the weak magnetic field according to the light spot position of the laser on the scale line. The application realizes the measurement of the weak magnetic field through a simple device.

The utility model relates to a Young modulus experimental instrument for a metal wire, which comprises a base, a bracket, a steel wire rope upper chuck, a steel wire rope lower chuck, a tension part, a tension sensor, a displacement connecting part, an optical lever placing platform, a three-foot tip seat, a laser emitting part, a vernier caliper support frame and a vernier caliper, the laser emitting part is installed on the three-foot tip seat, the measuring block on the displacement connecting part penetrates through the optical lever placing platform and is connected with the optical lever placing platform in a sliding mode, and a laser beam of the laser emitting part can vertically and downwards directly irradiate a vernier of the vernier caliper. According to the Young modulus experiment instrument for the metal wire, the displacement variation of a laser projection point of the laser emitting part is read through the vernier caliper, the measurement precision is high when the Young modulus experiment instrument is used, a telescope and a reflecting mirror are not used, only the three-foot tip seat and the vernier caliper need to be adjusted, the workload of adjustment preparation before an experiment is reduced, and the experiment efficiency is improved.

The invention relates to the field of molecular detection, in particular to a target concentration detection method and detection equipment based on magnetic micro-cantilever nano-mechanical sensing. The target object is detected through a competitive mechanism formed when the target object and the magnetic nanoparticles are combined with the probe on the micro-cantilever beam, due to the competitive relation between target molecules on the experiment beam and the magnetic particles, the number difference of the magnetic particles on the experiment beam and the number difference of the magnetic particles on the contrast beam are caused, and under the action of the magnetic field device, the detection accuracy is improved. A micro-cantilever sensor light path combined with an optical lever principle detects the deflection change of a micro-cantilever due to the acting force of a magnetic field, so that the ultra-sensitive detection of an ultra-micro sample micromolecule target is realized, and the problems that the sensitivity to a sample with extremely low target substance concentration is insufficient and micromolecules cannot be detected in the prior art are solved; and a novel rapid, accurate and effective detection method is provided for detection of some target objects with high detection limit requirements and low sample size.

The invention discloses a comprehensive crystal detection device and method based on multi-information fusion, and the method comprises the steps: arranging three collimation lasers in an array manner, employing an optical measurement method similar to an optical lever, and obtaining a light spot position image through the shooting of a light spot imaging visual camera; the pose information of the optical element on the optical element positioning tool can be obtained through accurate inversion; the optical axis direction of the to-be-detected crystal is accurately determined by overlooking the change of two parallel straight lines of the cross wire image recorded by the visual camera, and the method is extremely simple and effective, so that the crystal can be effectively prevented from being loaded into a crystal frame in a wrong direction, the subsequent assembly process is effectively prevented from being carried out on the basis of errors, and the production efficiency is improved. Waste of manpower and material resources is avoided; moreover, by adopting the comprehensive crystal detection device and the comprehensive crystal detection method, electric automatic control can be realized very easily, so that automatic crystal detection is realized, and the detection efficiency is greatly improved.

The invention discloses a weak magnetic field measurement system and method based on a torsional balance optical lever method, and belongs to the technical field of electromagnetic measurement. The system comprises a lead wire, a magnet assembly, a dial, an optical lever, a reflective lens, a laser transmitter, a data recording device and a data processing unit. When the magnet assembly is twisted, the lead wire drives the magnet assembly to return to the initial position; when the magnet assembly is twisted, the optical lever and the dial are driven to rotate; the laser emitter and the data recording device are sequentially arranged on the side, away from the torsion balance support, of the dial, the reflective lens is fixedly installed in the middle of the optical lever, the laser emitter emits laser to the reflective lens, the laser is reflected to scale marks of the dial, and the data recording device is used for recording the light spot positions of the laser on the scale marks; the data processing unit calculates the magnetic field intensity of the weak magnetic field according to the spot position of the laser on the scale line. Measurement of the weak magnetic field is realized through the simple device.

The invention discloses a three-dimensional surface topography contact type probe system based on multi-principle sensing data. The three-dimensional surface topography contact type probe system comprises a contact type probe unit, an optical lever sensor, a capacitance sensor, a nanometer displacement executing mechanism, a signal fusion processing module and a control and feedback module. The contact type probe unit comprises a rotating shaft and a probe fixed at the near end of the rotating shaft; a reflecting mirror in the optical lever sensor, a laser diode and a four-quadrant photoelectric detector form light irradiation and the light irradiation is reflected to a closed loop of the four-quadrant photoelectric detector; the nanometer displacement executing mechanism controls the rotating shaft to move in the three-dimensional direction. The capacitance sensor detects the deflection amount of the rotating shaft through capacitance change between the far end of the rotating shaft and the fixed electrode; the signal fusion processing module fuses output signals of the two sensors and then outputs the fused output signals to the control and feedback module, and the control and feedback module drives the nanometer displacement executing mechanism to adjust the rotating shaft. According to the invention, high-resolution, wide-range and high-stability three-dimensional surface measurement is realized.

The application discloses a weak pressure measurement method based on a stable buoyancy system and an image centroid algorithm, and belongs to the technical field of precise mechanics measurement. The method first constructs a self-stable buoyancy rotation platform supported by high-viscosity silicone oil and an optical lever amplification light path, and eliminates mechanical friction by means of the difference between the gravity moment and the buoyancy moment; a weak pressure to be measured is applied to make the platform produce a slight rotation angle, the rotation angle is amplified into linear displacement of a reflected light spot through the optical lever principle, and a video is collected; red channel extraction and multi-frame superposition and averaging are carried out on the video frames to suppress liquid surface fluctuation noise; a threshold segmentation and a morphological operation are used to lock a light spot connected domain, a weighted pixel centroid algorithm is used to calculate the light spot center coordinates; and the light spot displacement is converted into the pressure value to be measured according to a calibrated linear response model. The application realizes high-precision measurement of weak pressure in the order of micro-newton, and the measurement resolution is better than 1 muN.

The application relates to a full-optical laser-ultrasonic imaging detection system and method for flip-chip solder joint defects, and relates to a full-optical laser-ultrasonic imaging detection system and method. The application is used to solve the problems of low resolution and complicated feature extraction in current laser-ultrasonic detection of solder joints. The application comprises an optical platform, the optical platform is provided with an X-direction moving table, a Z-direction moving table and an optical microphone clamping assembly, the X-direction moving table is provided with a Y-direction moving table, the Y-direction moving table is provided with a sample clamping assembly, the sample clamping assembly clamps a sample to be detected, the optical microphone clamping assembly clamps an optical microphone probe, the Z-direction moving table is provided with a first optical rod, the first optical rod is provided with an optical focusing lens, the optical focusing lens is located above the sample to be detected, the optical microphone probe is located below the sample to be detected, and the optical focusing lens and the optical microphone probe are connected with a computer assembly. The application belongs to the field of integrated circuits and precision measurement technology.

The utility model discloses a Young modulus measuring instrument for a metal wire. The Young modulus measuring instrument comprises a support, a fixed pulley arranged at the top of the support, a connecting line connected with the fixed pulley in a matched mode, a measuring assembly and an air wedge. The air wedge comprises a first glass sheet and a second glass sheet, the second glass sheet is arranged on the measuring assembly, one end of the first glass sheet is arranged above the clamp, the other end of the first glass sheet is in contact with the second glass sheet, and a wedge-shaped air gap is formed between the first glass sheet and the second glass sheet. Compared with the traditional optical lever method, the device converts the tiny deformation of the metal wire into the amplification change of the interference fringe spacing, realizes the high-precision measurement of the deformation quantity by using the reading microscope, has the advantages of high measurement precision, convenience in operation, small occupied area and the like, can remarkably improve the experiment efficiency, and is suitable for being popularized and applied to the fields of teaching and scientific research.

The invention discloses an all-optical laser ultrasonic imaging detection system and method for flip chip welding spot defects, and relates to an all-optical laser ultrasonic imaging detection system and method. The invention aims to solve the problems that the current laser ultrasonic detection welding spot is low in resolution and tedious in feature extraction. The device comprises an optical platform, the optical platform is provided with an X-direction moving table, a Z-direction moving table and an optical microphone clamping assembly, the X-direction moving table is provided with a Y-direction moving table, the Y-direction moving table is provided with a sample piece clamping assembly, a sample piece to be detected is clamped on the sample piece clamping assembly, an optical microphone probe is clamped on the optical microphone clamping assembly, and the Z-direction moving table is provided with a Z-direction moving table. A first optical rod piece is arranged on the Z-use moving table, an optical focusing lens is arranged on the first optical rod piece, the optical focusing lens is located above the sample piece to be tested, the optical microphone probe is located below the sample piece to be tested, and the optical focusing lens and the optical microphone probe are both connected with the computer assembly. The invention belongs to the technical field of integrated circuits and precision measurement.

The invention relates to the technical field of precision measurement, in particular to a micrometric displacement measurement system and method based on an end point reflector optical lever, the system adopts an optical lever amplification principle, micrometric displacement at the end point of a cantilever beam is converted into large displacement of a reflection light spot on a receiving module, and the measurement sensitivity is remarkably improved through optical amplification. Accurate measurement of infinitesimal displacement is realized; meanwhile, force deformation or interference possibly introduced in contact measurement is avoided; the system processes an optical measurement signal through the circuit module, acquires voltage data in real time through the upper computer, and automatically calculates and displays a displacement value through a preset displacement-voltage model, so that automation and digitization of the measurement process are realized, and the measurement efficiency is improved. Compared with a traditional measuring device, the system is simple and clear in structure, convenient in light path adjustment, high in practicability and low in cost, and solves the problems that an existing micro-displacement measuring method is complex in operation, strict in environment requirement and high in cost.