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Patent Searching and Data


Matches 1 - 50 out of 11,687

Document Document Title
WO/2021/004709A1
The invention provides a method for calibrating a mirror of an interferometer system configured to measure a position of an object using two interferometers of the interferometer system that are arranged at opposite sides of the object a...  
WO/2021/004820A1
A method for measuring a semifinished prism (14) in which a first test beam path (29) is produced, by which a first test image (27) is imaged to infinity, and in which the first test beam path (29) is guided as an incident beam path (30)...  
WO/2021/003444A2
3D metrology techniques are disclosed for determining a changing topography of a substrate processed in an additive manufacturing system. Techniques include fringe scanning, simultaneous fringe projections, interferometry, and x-ray imag...  
WO/2021/003256A1
A processing machine (10) for building an object (11) from powder particles (12) includes a build platform (26), an excitation system (21) and an electron beam irradiation device (22). The build platform (26) includes a support surface (...  
WO/2020/261235A1
An optical device includes two prisms and a beamsplitter configuration. A first of the prisms has a first surface associated with a source and a second surface oblique to the first surface. A second of the prisms has a first surface asso...  
WO/2020/262460A1
This optical sensor (1) comprises a metal base section (10) formed in a cylindrical shape, an optical fiber member (20) inserted into the interior of the base section (10), and a sensor head (30) that is formed from single crystal alumin...  
WO/2020/257711A1
Aspects of the present disclosure provide improved techniques for imaging a subject's retina fundus. Some aspects relate to an imaging apparatus that may be substantially binocular shaped and/or may house multiple imaging devices configu...  
WO/2020/257450A1
Methods, apparatus and systems for testing an optical element are described. One example device for measuring a test optical component includes a pre-conditioning optical module positioned to receive an optical beam from a light source a...  
WO/2020/249540A1
The invention relates to a method for determining a length L and/or a change in the length L of a measurement path between a first measurement point 4 and a second measurement point 8 by interferometry, wherein a control light beam is tr...  
WO/2020/249339A1
The invention provides an interferometer system to determine a position of a movable object, comprising: a laser source to provide a radiation beam, an optical system arranged to split the radiation beam into a first beam along a first o...  
WO/2020/246788A1
The present invention relates to a scanning hologram-based automatic optical inspection apparatus and method. The automatic optical inspection apparatus comprises: a hologram image-capturing unit which captures an image of a hologram of ...  
WO/2020/246015A1
The purpose of the present invention is to provide a technique for automatically correcting a phase difference during inspection by analyzing the influence of the phase difference while shifting the position of a birefringent element. An...  
WO/2020/245511A1
The invention relates to a method and device (1) for measuring the shape of an interface (103) of an optical element (1000) comprising a plurality of interfaces, the device (1) comprising: measurement means (4000, 6000, 7000) with at lea...  
WO/2020/245413A1
A laser interferometer configured to provide position information relating to a reflective surface, the laser interferometer comprising: a laser source, a photodetector, a signal processor and an optical defocusing element having a first...  
WO/2020/244937A1
A measuring apparatus (10) for interferometrically determining a shape of an optical surface (12) of a test object (14) comprises a diffractive optical module (24) for generating a test wave (26), which is directed at the optical surface...  
WO/2020/240541A1
The present invention discloses a technique having an off-axis interferometric geometry that is capable of spatially multiplexing at least six complex wavefronts, while using the same number of camera pixels typically needed for a single...  
WO/2020/239770A1
The invention relates to an interferometric measurement device and to an interferometric method for determining the surface topography of a measurement object (1). The essence of the invention is that the light intensities Iq(zi) of at l...  
WO/2020/241584A1
This optical interferometer reduces noise in interferograms in optical interferometry. This optical interferometer (1) is characterized by being provided with a measurement unit (2) which irradiates a measurement target and a reference s...  
WO/2020/243670A1
This device allows one to measure seismic activity from a hand-held device, in particular a mobile phone. A microfabricated whispering gallery mode (WGM) based seismometer operates in conjunction with an application installed on a mobile...  
WO/2020/241583A1
Provided is light interference measurement technology that improves depth-direction intensity profile resolution without using a wideband light source. A light interference measurement device (1) comprises a measurement unit (2) for acqu...  
WO/2020/240499A1
An image acquisition and processing apparatus (1) to determine a physical property of a product (2) movable along an advancement direction (A) comprises: - a source of electromagnetic radiation (9) arranged to generate a beam of electrom...  
WO/2020/239162A1
The invention relates to a device for generating a synthetic wave length comprising at least two surface emitters and a support element, the support element is a heat conductor and both surface emitters are securely arranged in or on the...  
WO/2020/237584A1
An OCT imaging apparatus suitable for multiple optical paths, comprising a reference light input interface, a reference light output interface, a 1×N level photoelectric switch, an N×1 coupler, and N optical paths (L1, L2, L3) formed b...  
WO/2020/231867A1
Surface changes are estimated using multiple speckle interferograms acquired using beams incident at different angles. Beam irradiation conditions can be changed to increase signal to noise ratio with averaging, such as weighted averagin...  
WO/2020/227632A1
The Direct Detection technique uses a Fabry -Perot interferometer to determine the Doppler shifts in the LIDAR return. The detection approaches include either the edge technique which uses narrow band filters to transform the shift into ...  
WO/2020/227698A1
The present invention provides an optical imaging system having an optical module to project the light onto the sample evenly and effectively. In addition, the present invention provides a method to eliminate image artifacts and improve ...  
WO/2020/142131A3
A method and an apparatus are directed to characterizing a continuously moving 3D object via interferometry -based scanning. The method includes repeatedly forming several depth characterizations of the 3D object along respective scan li...  
WO/2020/216638A1
A method for measuring an amount of light that is back-scattered by an optical instrument (1) comprises using the optical instrument as reflector for an interferometer (10). Variations are applied to an instantaneous position of the opti...  
WO/2020/217606A1
This interference image imaging device has a first part (8) which includes a first optical member (21) and a second optical member (22) and which causes a first luminous flux (7) to transmit therethrough and causes a change of the orient...  
WO/2020/217448A1
This interference image imaging device (100) has: a first part (8) which includes a first optical member (21) and a second optical member (22) and which causes a first luminous flux (7) to transmit therethrough and causes a change of the...  
WO/2020/214438A1
A detector system for Fourier spectroscopy such as a spectral domain optical coherence tomography instrument includes a diffractive optic for diffracting the interfering light into angularly dispersed wavenumbers, a prism for reduces a n...  
WO/2020/214444A1
Embodiments of the present disclosure relate to measurement systems and methods for diffracting light. The measurement system includes a stage, an optical arm, and one or more detector arms. The method of diffracting light includes a met...  
WO/2020/210875A1
A wear sensing liner for a comminution apparatus. The wear sensing liner comprising: a liner body comprising; a wear surface side defining a wear surface; and an opposed, operatively rear surface side; and at least one sensor carried by ...  
WO/2020/208633A1
A system comprising: at least one hardware processor; and a non-transitory computer- readable storage medium having stored thereon program instructions, the program instructions executable by the at least one hardware processor to: recei...  
WO/2020/208180A1
The present invention relates to a method for examining a coating of a probe surface, comprising the steps of providing (41) sensing data indicative of a depth of the coating at each of a predetermined subset of probe surface points, det...  
WO/2020/210679A1
Alignment of a 2D image to a corresponding 3D image is provided by writing a pattern into a 3D sample, The pattern is at known positions in the 3D image, and provides visible reference features in the 2D image. This permits accurate dete...  
WO/2020/202547A1
This optical distance measurement device (100, 100a) comprises: a splitting unit (103) that splits laser light to output the same as measurement light and reference light; a measurement light splitting unit (104) that splits the measurem...  
WO/2020/201486A1
A tunable laser (101) comprising a gain medium (144), wherein the optical tunable filter (150) includes: applying the voltage difference for one or more consecutive driving time interval, each lasting less than 1 ps, varying the voltage ...  
WO/2020/201481A1
The present invention relates to an optical coherence tomography analysis method, comprising: Providing a Swept Source Optical Coherence Tomography system (SS-OCT), the SS-OCT system including: ° a light source, tunable over a spectral ...  
WO/2020/201190A1
The invention relates to a testing device (1) for measuring the homogeneity of an optical element (10) in a beam path (5) of the testing device, the testing device containing an interferometer (2), which comprises a monochromatic light s...  
WO/2020/204817A1
A non-contact non-destructive testing method includes spatially and/or temporally controlling a laser excitation light based on a predetermined pattern. The laser excitation light is projected onto a surface of a test object to generate ...  
WO/2020/198562A1
Handheld optical imaging devices and methods are disclosed herein. In an embodiment, an optical coherence tomography (OCT) system includes an OCT probe that is configured as a hand-held probe for imaging an eye of a patient, the OCT prob...  
WO/2020/192699A1
An MLA‑OCT imaging catheter (3), an MLA‑OCT imaging catheter calibration method, an MLA‑OCT imaging system and an imaging method therefor. The MLA‑OCT imaging catheter (3) comprises an inner tube (5), an outer tube (4) and a mult...  
WO/2020/193277A1
A measuring method for interferometrically determining a shape of a surface (12) of a test object (14) comprises the steps of arranging a first diffractive optical element (30, 130, 230) in the beam path of an input wave (18) for generat...  
WO/2020/197813A1
An example method includes causing a light projecting system of a distance sensor to project a pattern of light onto an object. The pattern of light includes a plurality projection artifacts arranged in a grid. Rows and columns of the gr...  
WO/2020/187713A1
A device for removing a portion of an object includes a stage, a metrology apparatus, a material removal device, and an actuator. The metrology apparatus includes a radiation source, an optical system, and a detector. The material remova...  
WO/2020/142139A3
A three-layer system composed of a substrate, a metal or metal alloy thin film deposited on the substrate surface, and an overlaid stimulus-responsive polymer layer detects changes in environmental conditions brought about by physical, c...  
WO/2020/182238A1
The present invention relates to a device, use of the device and a method for high contrast imaging, particularly suitable for imaging of moving object of interest such as gas expanding from a gas jet or physical or chemical or biologica...  
WO/2020/183395A1
The invention relates to a system and method for detecting vibrations on the periphery of an optical fibre, which is divided into five subsystems that are connected together. First, a light-source subsystem (6) generates light, which is ...  
WO/2020/186041A1
A dental optical coherence tomography system for scanning a sample has a swept source laser configured to generate output light having a range of wavelengths. Two or more optical channels each provide a reference and sample path for the ...  

Matches 1 - 50 out of 11,687