216 results about "Optical scanners" patented technology

The invention relates to the technical field of printed circuit board manufacturing and quality detection, in particular to a PCB forming detection method based on a hole site scatter diagram and SPC analysis, and the method comprises the steps: collecting the actual hole site data of a PCB substrate through an optical scanner or a laser measurement device, generating a scatter diagram containing coordinates, aperture and tolerance, and carrying out the detection of the hole site scatter diagram; an abnormal region is identified by using an improved density clustering algorithm; performing multi-dimensional analysis on the scatter diagram based on an SPC model, extracting characteristic parameters such as hole site density deviation, constructing a dynamic control limit, and calculating a CPK to judge a processing state; and when the CPK is lower than a threshold value, optimization instructions such as drilling path correction and drill bit wear compensation are generated and fed back to the equipment through the anti-saturation fuzzy PID controller to realize closed-loop control. According to the method, the hole site machining quality can be accurately detected, the machining parameters are adaptively adjusted, and the PCB forming precision and the production stability are effectively improved.

The invention discloses a contour detection method and system for aluminum bar quality inspection based on an image recognition technology, and belongs to the technical field of computer vision detection.According to the method, a high-speed optical scanner is used for scanning the surface of an aluminum bar at multiple incident angles, and reflection change curves at different incident angles are obtained; a two-dimensional grey-scale map is obtained, the two-dimensional grey-scale map is converted into a depth parameter matrix, meanwhile, the incident angle position of a light beam, the scanning speed and a scanning time sequence are synchronously recorded in the scanning process, gradient second-order differential transformation is conducted on the obtained depth parameter matrix in the contour direction, and a curvature amplitude spectrum is generated; a high-speed optical scanner is used for scanning the surface of the aluminum bar at multiple incident angles, a reflection change curve and a depth parameter matrix are synchronously obtained, key parameters such as the light beam incident angle and the scanning speed are recorded, the problem that traditional single-angle scanning contour information is incomplete is solved, the three-dimensional shape of the surface of the aluminum bar can be represented more comprehensively, and the accuracy is high. And initial feature extraction deviation caused by information loss is reduced.

The invention provides a titanium plate performance analysis method and system, and relates to the technical field of metal material detection.The method comprises the steps that an optical scanner is adopted to establish a three-dimensional structure on the surface of a titanium plate, and test areas are divided; synchronously acquiring stress, hardness and conductivity data of a test point by using a multi-probe collaborative detection device; constructing a dual-branch feature extraction network, wherein the dual-branch feature extraction network comprises a surface topography feature branch and a physical feature branch; performing statistical integration on the features in the test area, calculating distribution features and determining a weight coefficient; and generating a performance analysis result through feature fusion and a multi-task output layer, and finally determining the performance grade of the titanium plate. According to the method, deep fusion of morphology information and physical characteristics is realized, and the accuracy and reliability of titanium plate performance evaluation are improved.

The invention relates to a continuous punch forming method of a high-hardness alloy thin-wall lock case in the field of intelligent manufacturing, which comprises the following steps: according to a stress distribution diagram, adjusting a die gap by adopting a self-adaptive algorithm, dynamically optimizing gap parameters for a local stress concentration area, and determining real-time gap configuration; if the temperature deviation of any area in the temperature field exceeds 10 DEG C, recalculating heat source distribution through a heat flow simulation algorithm, and determining optimized heating parameters; acquiring surface topography data of the annealed thin-wall lock case through an optical scanner, and analyzing fracture and wrinkling defects by adopting an image processing algorithm to obtain defect distribution characteristics; if the proportion of the fracture area in the defect distribution characteristics exceeds 2%, the forming failure probability is predicted through a neural network model, and whether the stamping speed is adjusted or not is determined; and according to the defect distribution characteristics and the softening consistency data, a data fusion algorithm is adopted to comprehensively evaluate the forming stability, and optimized operation parameters of the continuous stamping production line are obtained.

Systems and methods of detecting activity at point of sale are provided. In one exemplary embodiment, a method is performed by a POS system having an optical sensor device, an optical scanner device and a load sensor device. The optical sensor device has a field of view that includes a first region about the POS system and the load sensor device is operable to measure a load of an object while positioned in a bagging area of the POS system. Further, the first region includes a second region associated with a certain object type that can be positioned in the bagging area without having to be scanned or weighed. The method includes obtaining a successive image captured by the optical sensor device to enable a determination that the target object corresponds to the certain object type that is exempt from being scanned or weighed based on the successive image.

An OCT instrument comprising: an optical coupler which generates signal light and reference light from a swept narrowband light source; a detector which samples a time-varying interference signal based on the reference light and signal light returned from a sample; an adjustable optical frequency shifter which: generates a first sideband light by adjusting an optical frequency of the reference light, such that the detector unit samples a first time-varying interference signal resulting from an interference between the sideband light and the returned signal light; and maintains the optical frequency of the reference light such that the detector unit samples a second time-varying interference signal resulting from an interference between the reference light and the returned signal light. The OCT instrument generates a respective axial depth profile of the sample based on each of the sampled first time-varying interference signal and the sampled second time-varying interference signal.

In a method for reading identification information inscribed in a wafer (14) in the form of an identification mark (16), at least one measuring beam (24; ML) of an optical measuring device (20; 110), comprising either an optical coherence tomograph (22) or a chromatic confocal distance sensor (110), scans an area (18) of the wafer (14) in which the identification mark (16) is inscribed. The identification mark (16) is recognized from measurement data generated from the scanning of the wafer (14). Based on the recognized identification mark (16), the identification information associated with it is determined.

In accordance with one aspect of the present invention, an optical coherence tomography-based ophthalmic testing center system includes an optical coherence tomography instrument comprising an eyepiece for receiving at least one eye of a user or subject; a light source that outputs light that is directed through the eyepiece into the user's or subject's eye, an interferometer configured to produce optical interference using light reflected from the user's / subject's eye, an optical detector disposed so as to detect said optical interference; and a processing unit coupled to the detector. The ophthalmic testing center system can be configured to perform a multitude of self-administered functional and / or structural ophthalmic tests and output the test data.

A method and apparatus for determining an alignment of an optical scanner (106a, 106c) for directing an electromagnetic beam to a position within a scanning field. The method may include positioning a reference element (113) within a scan field of the optical scanner (106a, 106c), and controlling the optical scanner (106a, 106c) such that an electromagnetic beam is directed to a plurality of different points in the scan field, including at least one point on the reference element (113). Reflected electromagnetic radiation is detected. The method may include determining when an electromagnetic beam is directed to a reference position in the scanning field given by the reference element (113) based on a comparison of the intensities of the electromagnetic radiation detected for the different points, and determining a respective demand signal to cause the optical scanner (106a, 106c) to direct the electromagnetic beam to the reference position.

A device (14) and a method for measuring wafers (10), comprising an optical coherence tomograph (22) configured to generate a measuring light beam (24) and direct it onto the wafer (10) via an optical system (38), a scanning device (26) configured to deflect the measuring light beam (24) in two spatial directions, a control unit (36) configured to control the scanning device (26) so that the measuring light beam (24) successively scans the surface of the wafer (10) at several measuring points, and an evaluation unit (57) configured to calculate distance values ​​and / or thickness values ​​from interference signals provided by the optical coherence tomograph (22), and a camera (80) configured to capture an image of the surface of the wafer (10), wherein the camera (80) images camera light (83).which has passed through the optical system (38) at least partially from the wafer (10).

A fundus imaging device has a fixation optical system, an OCT optical system, an imaging optical system, and a controller. The controller is configured to acquire a focus evaluation value based on a slit image formed by slit-shaped illumination light on a two-dimensional imaging element of the imaging optical system in a case where an optical scanner of the imaging optical system deflects in a predetermined direction. The controller is configured to perform diopter correction control of the OCT optical system by driving a first focus adjustment unit of the OCT optical system based on the focus evaluation value.

An ophthalmic apparatus includes a light source, an illumination optical system, an optical scanner, an imaging optical system, and a controller. The illumination optical system generates slit-shaped illumination light. The optical scanner deflects the illumination light to guide the illumination light to a fundus of a subject's eye. The imaging optical system guides returning light of the illumination light from the fundus to an image sensor. The controller controls the image sensor using a rolling shutter method. The illumination optical system includes a slit-shaped aperture arranged at a position substantially conjugate optically to the fundus, an iris aperture arranged between the light source and the slit, and configured to be at a position substantially conjugate optically to an iris of the subject's eye; and an optical element arranged between the light source and the iris aperture, to deflect the light from the light source.

An ophthalmic apparatus includes an objective lens, an illumination optical system, an optical scanner, a light receiving optical system, and a pupil division member. The illumination optical system includes an illumination diaphragm with one or more openings formed at positions eccentric to an optical axis, and is configured to irradiate slit-shaped illumination light. The optical scanner is configured to deflect the illumination light to guide the deflected illumination light to the eye to be examined via the objective lens. The light receiving optical system is configured to guide returning light, that passes through the objective lens, of the illumination light from the eye to be examined to an image sensor. The pupil division member includes a photographic diaphragm with one or more openings formed at positions eccentric to an optical axis, and is configured to spatially separate optical paths of the illumination optical system and the light receiving optical system.

Method for imaging at least one beam (1) of electromagnetic radiation onto an object (2), wherein the beam (1) is deflected via its beam path (3) by an optical arrangement (4) by means of an optical scanner system (5) of the optical arrangement (4), comprising at least two optical scanners (6), at least twice with a predetermined and / or predefinable variable angle, each time changing the beam path (3) of the beam (1), and the beam (1) is not subject to refraction between each deflection, the beam (1) is also imaged onto the object (2) by means of an imaging optic (7) after its deflection, and a focus area (8) of the beam (1) is placed on and / or into the object (2) by means of the imaging optic (7).by means of the scanner system (5) at least one pivoting movement of a beam segment (9) of the beam (1) exiting the scanner system (5) is generated and the pivoting movement and / or at least a rotational movement (15) about the pivot point (10) causes a movement of the focus area (8) in at least one spatial direction (X, Y) perpendicular to the optical axis of the imaging optics (7), characterized in that during the pivoting movement the pivot point (10) of the beam segment (9) lies in the beam path (3) in the imaging optics (7) and beam shaping is imposed on the beam (1) via its beam path (3) by means of a beam shaping optic (16) by the optical arrangement (4), so that a focus area (8) extended in the direction of the beam path (3) is imaged on and / or in the object (2), which extends over at least a part of the dimension of the object (2) formed in the direction of the beam path (3).

An optical scanner is described that includes a microelectromechanical system phased array suitable for use in a light detection and ranging system. Generally speaking, the scanner includes an optical transmitter having a first phased array for receiving light from a light source, forming an illumination stripe in a far-field scene, and modulating the phase of the light to sweep or steer the stripe across the scene in two dimensions. An optical receiver in the scanner includes a second phased array for receiving light from the far-field scene and directing at least some of the light onto a detector. The second phased array is configured to descan the received light by directing light reflected from the far-field scene onto the detector while rejecting background light. In one embodiment, the second phased array directs light from a slice of the far-field scene onto a 1D detector array.

Optical coherence tomograph for examining an eye (3) which features: - a lighting device (4, 5) for providing source radiation, - an illumination and measurement beam path (7) comprising a splitting element (6) for splitting the source radiation into illumination radiation (B) and reference radiation (R), with the illumination radiation (B) illuminating an illumination field in the eye (3) and collecting backscattered illumination radiation in the eye (3) as measurement radiation (M), wherein the illumination and measurement beam path (7) comprises a scanner (13) for adjusting the lateral position of the illumination field in the eye (3) and a front optic (12), - a reference beam path (8) which provides for the reference radiation (R) an optical path length (21) corresponding to an optical path length from the splitting element (6) to the illumination field and back to a superposition point (71), - a detection beam path (14, 15, 17) which receives the measuring radiation (M) from the illumination and measuring beam path (7) and the reference radiation (R) from the reference beam path (8) and superimposes them at the superposition point (71) and directs them onto a detector (19), - the illumination and measuring beam path (7) further exhibits - a beam splitter (11) for separating the measuring radiation (M) collected by the eye (3) from the illumination radiation (B) directed to the eye (3), wherein the beam splitter (11) directs the separated measuring radiation (M) to the detection beam path (14, 15, 17), and - a light splitting element (32, 34) that splits the illumination radiation (B) into spots in order to illuminate the retina (2) with a multi-spot pattern, characterized in that - the lighting device (4, 5) is tunable with respect to the wavelength of the source radiation, - the detector is an area detector (19), - the detection beam path further - an optical element (14) acting only on the measuring radiation (M), which interacts with the front optics (12) and adjusts the numerical aperture with which measuring radiation (M) is collected in the eye (3), and - an aperture (15) which is arranged in front of the area detector (19), in or near an intermediate image plane and which defines the size of an object field from which the measuring radiation (M) reaches the area detector (19), and - wherein the aperture prior to the area detector is designed as a first multi-hole aperture (15) and a first multi-lens array (36) is arranged between this multi-hole aperture and the area detector (19), which focuses the radiation emanating from each hole of the first multi-hole aperture (15, 15a, 15b) onto a pixel area of ​​the area detector (19) which has a spatial resolution of 4 to 100 pixels in one direction, preferably as a 2D pixel area with 5 to 50 pixels or 5 to 40 pixels per direction.

To reduce clipping and loss of brightness of a projected image.SOLUTION: There is provided a laser projection system (200), where light output by an optical engine is directed to a first scan mirror (206) as two angularly separated laser light beams (1002 and 1102). The angularly separated laser light beams typically have different angles of incidence (1010 and 1110) on a second scan mirror (208) of an optical scanner. Respectively different levels of magnification are applied to a beam diameter of each of the angularly separated laser light beams in a first dimension, such that the angularly separated laser light beams have respectively different beam diameters (1012 and 1112) upon incidence at the second scan mirror. The different beam diameters of the angularly separated laser light beams result in regions of incidence of each of the angularly separated laser light beams on the second scan mirror being equal or substantially similar.SELECTED DRAWING: Figure 1

The application provides a magnetocardiogram registration system and method based on optical scanning, and the system comprises a bed body registration module and a CT image registration module. The bed body registration module comprises a first arc-shaped marker and an L-shaped base, and the CT image registration module comprises a second arc-shaped marker which is consistent in shape with the first arc-shaped marker of the bed body registration module. Both the bed body registration module and the CT image registration module are made of non-magnetic photosensitive resin material. Before magnetocardiogram (MCG) acquisition, the two registration modules are digitized by using a handheld optical scanner. According to the bed body registration module, the sensor array coordinate system and the human body coordinate system are aligned. When CT scanning is performed, the image structure of the trunk part of a subject is obtained. According to the CT image registration module, the human body coordinate system and the CT coordinate system are aligned. Correspondingly, the application also provides a registration method corresponding to the system, which significantly improves the efficiency and accuracy of the MCG registration process and promotes the subsequent medical research and application of MCG.

The embodiment of the invention relates to an optical scanner. The optical scanner comprises a polarizing beam splitter, a wave plate and an optical phased array chip. Wherein the polarizing beam splitter is used for dividing incident light source light into first laser with a first polarization state and non-working light with a second polarization state, reflecting the first laser and transmitting the non-working light, and the first polarization state is different from the second polarization state. The wave plate is located on the reflection light-emitting side of the polarizing beam splitter and used for receiving the first laser and emitting second laser with a third polarization state different from the first polarization state and the second polarization state. And the optical phased array chip is used for receiving the second laser and emitting reference light, and the optical phased array chip is also used for changing the emitting angle of the reference light. The embodiment of the invention further relates to a laser detection system with the optical scanner and an automatic driving vehicle applying the laser detection system.

An image-based optical scanner utilizes methods to provide unique actions, such as notifications or other indications for specific results of checks on GS1 label application data. A scanning device may include an imager configured to capture images of items passing through a field of view, a memory having rules stored thereon associated with actions to be taken based on decoded GS1 label application data, and a processor operably coupled to the imager and the memory, the processor configured to generate unique actions for specific results of checks on GS1 label application data decoded from a GS1 Digital Link label on the item.

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).

A method for upscaling an image includes executing a first subnetwork of an artificial neural network (ANN), with pixels of an image patch of the image as an input layer thereto, to yield (i) a first predicted image patch as an output layer of the first subnetwork and (ii) a first vector output by a source hidden layer of the first subnetwork. The method also includes executing a second subnetwork of the ANN, with pixels of the image patch as input thereto, to yield a second predicted image patch as an output of the second subnetwork, wherein executing the second subnetwork includes concatenating the first vector with the input to a receiving hidden layer of the second subnetwork to yield a concatenated vector. The method also includes determining an upscaled image patch as one of the first predicted image patch and the second predicted image patch.

The invention relates to an optical scanner and an image acquisition method performed using the same. An image acquisition method includes capturing, with an image sensor including an array of pixels, a first set of images of a scene illuminated by a sight pattern. Each image of the first image set includes a respective image region detected by a plurality of pixels of the pixel array, the plurality of pixels defining a sight illumination region of the pixel array, the sight illumination region at least partially determining a region of interest (ROI) of the pixel array. The method further includes determining an ROI exposure setting based on ROI pixel values of a first image set generated by the ROI of the pixel array. The method further includes capturing a second image set of the scene when the exposure setting of the pixels of the sight illumination area is equal to the ROI exposure setting.

To provide a small optical scanner.SOLUTION: An optical scanner comprises: a deflector including a common deflection surface for deflecting first and second light fluxes and scanning each of first and second scanned surfaces in a main scanning direction; and first and second optical systems guiding the first and second light fluxes deflected by the deflection surface to the first and second scanned surfaces. The first optical system includes a first refractive element, a second refractive element and a first reflective element arranged in order from the deflection surface toward the first scanned surface. The second optical system includes a third refractive element, a second reflective element, a fourth refractive element and a third reflective element arranged in order from the deflection surface toward the second scanned surface. At least one of the first and third refractive elements includes an optical surface in which a normal line on a bus line in a sub-scanning cross section is nonparallel to an optical axis.SELECTED DRAWING: Figure 1

This invention relates to ranging and triangulation in a multi-sensor scanner. An optical scanner uses a ranging phase to determine a range to a subject, in which a series of image frames is received that collectively contain a ranging spot captured as a reflection off a surface of the subject. The captured ranging spot is time-modulated according to a modulation pattern, and the series of image frames is processed based on the modulation pattern to identify the ranging spot, determining possible locations of the ranging spot within at least one image frame of the sequence. This is followed by a triangulation phase in which the possible locations of the ranging spot are processed to produce a range determination. In an optional implementation, whether the possible locations of the ranging spot are within a reasonable location is assessed based on different device-specific positional offsets in the image frames captured by different ones of a plurality of image capture devices.

The present disclosure relates to a system for reading a barcode independently of image resolution or scale of a captured barcode image. In one embodiment, the system includes an optical sensor and a processor. The optical scanner can scan a barcode, including a plurality of bars and spaces, into a scanned image. The processor can convert the scanned image into binary data. The processor can also calculate numbers of ones (1s) between zeros (0s) in the binary data and determine widths of one of i) each of the bars and ii) each of the spaces based on the calculated numbers of ones (1s). The processor can further calculate numbers of zeros (0s) between ones (1s) in the binary data and determine widths of the other one of i) each of the bars and ii) each of the spaces based on the calculated numbers of zeros (0s).

A flex weight sensing tray system for storing packaged medicine and regulated medical products for taking is disclosed. The system may include an integrated portable open-top tray, a platform having a weight sensing area and an optical scanner. The system may include computer readable instructions that cause a processor to store scanned information, authenticate user credentials, permit the user to enter a user selection to remove products from the tray, calculate a first weight and a second weight using the database and the one or more weight sensors, permit the user to obtain the products when it is determined that (a) the one or more serial numbers corresponds to the user selection and (b) a difference between the first weight and the second weight falls within a tolerance and update one or more product statuses in the database in order to track removal of items from the tray.

To provide a distance measuring apparatus capable of easily matching an irradiation region of a light projection device with an image plane region of a light receiving device.SOLUTION: A light projection device includes a light source that emits light, an optical scanner that scans the light, and a pre-scanning optical system that guides the light from the light source to the optical scanner. The optical scanner includes a rotatable reflector having a plurality of reflection surfaces on a peripheral surface. At least two of the plurality of reflection surfaces have different angles relative to a rotation axis of the reflector. The optical scanner scans the light in a main scanning direction by rotation of the reflector, and scans the light in a sub-scanning direction by the difference in the angle of the reflection surface. The light projection device has an adjustment shaft for adjusting a light projection angle in the sub-scanning direction.SELECTED DRAWING: Figure 3

An optical scanner includes a light receiving unit, a reference light irradiating unit, and a light-receiving-side correcting unit. The light receiving unit includes an optical phased array that implements scanning by a light beam by individually controlling phases of a plurality of branched lights using a scanning phase amount. The reference light irradiating unit generates reference light and irradiate the reference light onto the light receiving unit. The light-receiving-side correcting unit estimates a phase shift amount that occurs in the plurality of branched lights as a result of distortion of a substrate on which the light receiving unit is mounted from a detection result of the light receiving unit onto which the reference light is incident, and sets a phase adjustment amount to be applied to the plurality of branched lights such that the estimated phase shift amount decreases.

The optical scanner (3) includes a light source (301), a collimator lens (302) for converting light radiated from the light source (301) into collimated light, and a deflector (310) located on a downstream side of the collimator lens (302) for deflecting the light in a main scanning direction (X). The optical scanner (3) comprises a heat flow channel (33) for transferring heat from the deflector to the collimating lens (302).