35 results about "Convergent beam" patented technology

Systems or techniques are provided for facilitating improved digital twin calibration for scientific instruments. In various embodiments, a system can synchronize, via execution of a state-wide Bayesian filter, a parametric state of a digital twin with a physical state of a scientific instrument. In various instances, the state-wide Bayesian filter can comprise a set of calibration iterations, each of which can comprise a Bayesian update to an entirety of the parametric state based on an iteration-common observable that is exhibitable by the scientific instrument and simulatable by the digital twin. In various cases, the scientific instrument can be a charged-particle microscope, the parametric state of the digital twin can be an aberration coefficient vector of the charged-particle microscope, and the iteration-common observable can be a Fourier transform of a convergent beam electron diffraction pattern of an amorphous carbon specimen captured by the charged-particle microscope.

The invention discloses a projection photoetching machine alignment sensing system based on vortex light spatial modulation. Wherein the reflector is located between the silicon wafer alignment mark and the first lens, reflects a light beam which is emitted by the alignment light source and is parallel to the silicon wafer alignment mark, and generates a first reflection light beam which vertically irradiates a first grating or a second grating of the silicon wafer alignment mark; after the first reflection light beam is diffracted by the silicon wafer alignment mark, generated positive first-level diffraction light and negative first-level diffraction light are upwards transmitted to the second lens through the first lens; the detector receives convergent light beams which vertically penetrate through a first vortex phase plate and a second vortex phase plate which are distributed on two sides of a central optical axis of the alignment sensing system in an xz plane; or receiving a convergent light beam which vertically penetrates through a third vortex phase plate and a fourth vortex phase plate which are distributed on the two sides of the central optical axis of the alignment sensing system in the yz plane. The system provided by the invention can realize the position detection of the alignment mark of the sub-nanometer and deep sub-nanometer precision photoetching machine.

A sliding cover for a liquid delivery device, such as a cap (100) for a pen injector (200), incorporates a set of sensors including an optical sensor (110) with an output which changes during uncapping or capping motions on passing of a plunger (220) of the pen injector. This output is used together with a position sensor (120) to determine the position of the plunger along a cylinder (210) of the liquid delivery device. By monitoring changes in the plunger position, the quantity of dosages delivered by the liquid delivery device can be determined, displayed, stored and / or transmitted to an external device for further data processing or storage. Preferred implementations of the invention employ optical sensors with a converging beam (115), and / or position sensors employing linear potentiometer strips (132).

To provide an optical device capable of forming a fine modified region at a higher speed than conventional devices. [Solution] The optical device 100A forms a fine modified region on a workpiece 9 using laser light (pulsed laser light 1), and includes an optical system 3 having a first axicon lens 21 and a second axicon lens 22 arranged along the traveling direction of the laser light, and a mirror 4 arranged between the first axicon lens 21 and the second axicon lens 22 for reflecting the laser light, and emits a convergent beam 10 from the second axicon lens 22, and a control unit 5 having a function of scanning the convergent beam 10 on the workpiece along a predetermined beam scanning direction 15 by controlling the reciprocating motion of the mirror 4 and the second axicon lens 22.

A full-reception light path of a small-aperture single-atom filter of a resonance fluorescence laser radar and a detection method, applied to the technical field of laser radars. The full-reception light path comprises: a front light path assembly (100) used for collimating and converging a light beam and decomposing the light beam into a first light beam and a second light beam, wherein the polarization directions of the first light beam and the second light beam are perpendicular to each other, the divergence angle of the collimated light beam is smaller than a first preset angle, the divergence angle of the converged light beam is smaller than a second preset angle, and the first preset angle is smaller than the second preset angle; a polarized light path assembly (200), comprising a first light path assembly (210) and a second light path assembly (220), which are respectively used for transmitting the first light beam and the second light beam to a rear light path assembly (300) so as to filter out noise light in the first light beam; and the rear light path assembly (300) used for simultaneously detecting the first light beam and the second light beam after the noise light has been filtered out.

An optical device capable of forming a fine modified region at a higher speed than conventional devices is provided. [Solution] An optical device 100A that forms a fine modified region on a workpiece 9 using pulsed laser light 1, the optical device 100A comprising: an afocal optical system 3 having a first convex lens system 31 and a second convex lens system 32 arranged along the direction of propagation of the pulsed laser light 1; an optical system 2 that has a rotating mirror 4 arranged at the position of the common focus CF of the first convex lens system 31 and the second convex lens system 32 and emits a convergent beam 10 from the second convex lens system 32; and a control unit 5 that has the function of scanning the convergent beam 20 on the workpiece 9 along a predetermined beam scanning direction 15 by controlling the reciprocating rotational movement of the rotating mirror 4.

Disclosed is a free space optical communication terminal comprising: a first arm interfacing a first port of a beam splitter and comprising a first component configured to emit a divergent first emitted beam and / or utilize a first received beam; a second arm interfacing the second port of the beam splitter and including a second component configured to emit a divergent second transmit beam and / or utilize a second receive beam; and a third arm interfacing the third port of the beam splitter and including a pointing unit configured to direct the first transmitted beam and / or the second transmitted beam to the target and / or to direct the first received beam and / or the second received beam received from the target. The third arm includes an optical element for collimating the transmit beam to provide a collimated transmit beam to the pointing unit and focusing the receive beam to provide a converged beam to the first / second arm. The invention further discloses a light beam guiding method and a carrying tool.

The present application relates to a kind of based on spectrometer imaging method and system of blaze grating.From the far field light of incident slit, into plano-convex lens, refract by plano-convex lens and meniscus lens, after again passing through thick catadioptric mirror concave surface reflection, with convergent light beam form is incident to convex blaze grating, after grating diffraction and reflection, form multiple beam single wavelength divergent light beam, in turn through thick catadioptric mirror reflection, meniscus lens and plano-convex lens refract, image on image plane, realize spectral imaging.The present application adopts immersion littrow-Offner structure, incident slit is off-axis in meridian and sagittal direction, so that incident slit and image plane are separated, facilitate engineering implementation;Spectrometer imaging system uses full immersion optical path, so that imaging spectrometer structure is more simple and compact, more convenient to assemble and use;Grating selects convex blaze grating, has high diffraction efficiency, so that the present imaging system can play a role in more extensive application field.

A method of detecting a defect in a sheet of glass includes: (i) directing a converging beam from a source of illumination onto a surface of the sheet of glass to illuminate the defect; (ii) focusing an image capture device onto a first plane to image the defect in the sheet of glass; (iii) capturing a first image of the defect; (iv) carrying out an adjustment step; and (v) capturing a second image of the defect. Each of the first and second images has a respective first portion from the illuminated defect and a respective second portion due to reflection of a portion of the beam from the glass surface. In the first image of the defect the first portion is brighter than the second portion, and in the second image of the defect the first portion is darker than the second portion. An apparatus for carrying out the method is also provided.

A multiple-wavelength reflective Raman probe includes a first parabolic mirror, a second parabolic mirror, a third parabolic mirror, and a fourth parabolic mirror. The first parabolic mirror receives a laser light, and reflects as a collimated light beam. The second parabolic mirror receives the collimated light beam, and condenses to a convergent light beam. The third parabolic mirror has a through hole. The convergent light beam passes through the through hole, and is focused on the sample detecting position. The third parabolic mirror also collects the light reflected by the sample detecting position and reflects as a collimated detection light beam. The fourth parabolic mirror collects the detection light beam, and condenses to a detection output light beam. The detection output light beam is focused at a focal point of the fourth parabolic mirror to be collected by a spectrometer.

A multiple-wavelength reflective Raman probe includes a first parabolic mirror, a second parabolic mirror, a third parabolic mirror, and a fourth parabolic mirror. The first parabolic mirror receives a laser light, and reflects as a collimated light beam. The second parabolic mirror receives the collimated light beam, and condenses to a convergent light beam. The third parabolic mirror has a through hole. The convergent light beam passes through the through hole, and is focused on the sample detecting position. The third parabolic mirror also collects the light reflected by the sample detecting position and reflects as a collimated detection light beam. The fourth parabolic mirror collects the detection light beam, and condenses to a detection output light beam. The detection output light beam is focused at a focal point of the fourth parabolic mirror to be collected by a spectrometer.

The application relates to an equal-peak annular soliton beam forming device based on optical transmission film regulation and an equal-peak annular soliton beam regulation method. The device comprises a first laser for emitting a first light beam; a first light beam modulation unit for converging the first light beam into a required radius after the first light beam is modulated to have a required spectral width and a required linear potential; a second laser for emitting a second light beam; a second light beam modulation unit for converging and reflecting the second light beam; a beam splitter for converging the modulated first light beam and the modulated second light beam again and forming a third converging light beam; a barium strontium niobate nonlinear crystal for forming an equal-peak annular soliton beam under the action of a nonlinear effect; and an optical imaging module for converging and imaging the equal-peak annular soliton beam. The application simplifies the principle, device and method for forming the equal-peak annular soliton beam and the structure of the nonlinear crystal, and improves the stability of the forming effect of the equal-peak annular soliton beam.

Optical fiber plug for an optical fiber connector for optically connecting a number N of first optical fibers to a number M of second optical fibers, wherein the optical fiber plug (1, 1', 101, 101') holds an end section (3) of each first optical fiber (4) with an optical fiber end face (5) and has a number N of lenses (6, 6'), each having an entrance surface (11) facing one of the first optical fibers and an exit surface (12) facing away from this first optical fiber, wherein each lens (6, 6') is assigned to exactly one first optical fiber and each optical fiber is assigned to exactly one lens (6, 6'), and the lenses (6, 6') are designed and arranged such that a beam emerging from one of the first optical fibers in a propagation direction is incident on the entrance surface (11) of the assigned lens (6,6') and is projected as a convergent beam onto the exit surface (12) of the associated lens (6, 6'), wherein at least one lens (6, 6') and preferably each lens is designed as a 2-section lens (6, 6') and has at least two sections, namely a first section (123, 223), which is delimited by the entrance surface (11), and a second section (124, 224), which is delimited by the exit surface (12), wherein the refractive index n, 1 of the first section (123, 223) differs from the refractive index n 2 of the second section (124, 224).

A high-throughput miniature Raman spectrometer, belonging to the field of spectroscopic analysis instruments, includes a laser module, an external optical path system, and a beam splitting system. The laser module comprises a narrowband laser module and a collimating mirror; the external optical path system includes a dichroic mirror, an aspherical lens, a stage, a long-pass filter, a cemented doublet lens, and a slit; the beam splitting system includes a collimating mirror, a blazed grating, a focusing mirror, and a linear charge-coupled device (CCD). By integrating the laser module and external optical path system with the beam splitting system, signal attenuation during fiber optic transmission is avoided; a large numerical aperture aspherical lens is used to achieve efficient sample excitation and signal collection; the cemented doublet lens converges the beam to the slit, reducing the optical path size and eliminating axial chromatic aberration; and the cascaded filtering structure of the dichroic mirror and long-pass filter effectively suppresses Rayleigh scattering interference. While maintaining resolution, the luminous throughput is significantly improved, offering low cost, high precision, and portability, making it suitable for fields such as food safety testing.

A stereoscopic display device includes a laser light source configured to emit a laser beam, a converter configured to convert the emitted laser beam to a collimated beam with a predetermined diameter, a divider configured to divide the collimated beam into a zeroth-order beam and a higher-order beam equal to or higher than a first-order beam by changing a wavefront of the collimated beam, a scanner configured to three-dimensionally scan a light condensing position of a converged beam by using a drawing space including a fluorescent material which is excited to spontaneously emit light with irradiation with a laser beam as a scan target range and changing optical axis directions in which converged beams including the zeroth-order beam and the higher-order beam are emitted and a focal distance at which the zeroth-order beam converges, and an intensity control unit configured to control an intensity at the light condensing position.

washing machine or dishwasher with an optical sensor (10), wherein the optical sensor (10) comprises - a case (20), - a light-emitting element (40), - a light-receiving element (42), - a light guiding structure (48) made of a transparent material with a light entry point, a first reflective surface (56), a second reflective surface (58) and a light exit point, wherein the light-emitting element (40), the light-receiving element (42) and the light-guiding structure (48) define a light measurement path (16) which runs in this order from the light-emitting element (40) via the light entry point, the first reflective surface (56), the second reflective surface (58) and the light exit point to the light-receiving element (42), wherein the light measurement path (16) runs on a section (18) located between the first (56) and the second (58) reflective surface outside the housing (20), wherein the light traveling along the light measurement path (16) from the light-emitting element (40) to the light-receiving element (42) is reflected at the first reflective surface (56) and at the second reflective surface (58), characterized by the fact that the light-emitting element (40) and the light-receiving element (42) are arranged outside the light-guiding structure (48) at a distance from it, wherein the entry point (60) and the exit point (62) each have a converging lens function, wherein a divergent light beam coming from the light-emitting element (40) is converted into a substantially parallel light beam by the converging lens function of the entry point (60), this parallel light beam is then reflected at the first (56) and the second (58) reflecting surface and subsequently converted into a convergent light beam directed towards the light-receiving element (42) by the converging lens function of the exit point (62), and wherein a light beam extending from the first reflective surface (56) to the second reflective surface (58) has a cross-sectional area of ​​not less than 0.9 mm at every point of the section (18) of the light measurement path (16) extending outside the housing (20). 2 exhibits.

This invention relates to the field of optical system technology, and more particularly to a dual-band, co-aperture, focusless beam-shrinking optical system, comprising: an aperture stop, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged coaxially along the incident direction of light; the first, second, third, and fifth lenses are positive lenses, and the fourth lens is a negative lens; a parallel incident laser beam and an infrared beam are incident on the first lens through the aperture stop, converge to form a first converging beam which is then incident on the second lens, converge to form a second converging beam which is then incident on the third lens, converge to form a third converging beam which is then incident on the fourth lens, diverge to form a diverging beam which is then incident on the fifth lens, and finally converge to form a parallel outgoing beam. This technical solution allows the laser beam and the infrared beam to share the same set of lenses and propagate along the same optical path, effectively solving the problems of complex structure, large size, and poor optical axis consistency caused by the need for independent design in traditional dual-band systems.

A method for detecting a defect in a glass sheet is described, comprising the following steps: (i) directing a converging beam from a light source onto the surface of the glass sheet to illuminate the defect; (ii) focusing an image capture device in the foreground to obtain an image of the defect on the glass sheet; (iii) capturing a first image of the defect; (iv) performing an adjustment; and (v) capturing a second image of the defect. Each image comprises a first portion corresponding to the illuminated defect and a second corresponding portion resulting from the reflection of a part of the beam off the glass surface. In the first image of the defect, the first portion is brighter than the second, and in the second image, the first portion is darker. The apparatus for carrying out the method is also described.

The present disclosure relates to a measuring arrangement and a method for measuring a molten tube of an extrusion blow-molding process, including at least the following process steps: positioning or providing a THz measuring device including a THz sensor comprising an optical axis, extruding a molten tube by a blow-molding extruder along an extrusion axis, emitting a THz transmission beam from the THz sensor along its optical axis in such a manner that the front wall of the molten tube lies in a divergent beam area of the THz transmission beam behind the focus or in a convergent beam area before the focus, receiving a reflected beam reflected from the molten tube and evaluating a measuring signal in the reflected beam.

The invention belongs to the technical field of optical devices, and discloses an aspheric condensing lens group, which comprises a second lens plate arranged from a light source side to a target side along an optical axis, the second lens plate is provided with a plurality of second aspheric lens units which are arranged in an array mode, and at least one optical surface of each second aspheric lens unit is an aspheric surface defined by a Qcon type aspheric polynomial; the light source side and the second aspheric lens unit are coaxially aligned and arranged at intervals to form an optical channel used for shaping light of the light source side into uniform convergence light beams. Through the optical channel design that the light source single lens plate / the light source double lens plate are coaxially aligned, and in combination with the convergence effect of the second aspheric lens unit / the pre-shaping effect of the first lens unit and the re-convergence effect of the second aspheric lens unit, light emitted by the light source can be efficiently shaped into uniform convergence light beams; the angle between the emergent light beam and the optical axis is small, and the device is suitable for application scenes with high requirements for light spot uniformity and energy distribution, such as phototherapy.

The invention relates to a device and method for reducing the reduction in intensity of a fluorescence dye by laser light when determining fluorescence and the number of antibodies on exosomes, comprising means for storing different measurement points of various differently coloured lasers in a measuring cell at certain measurement positions, the focusing of the laser beam interacting with the sample being recorded in a video camera as the centre of a convergent beam bundle.

The present disclosure provides an auto-focus spectrometer, including: a grating element configured to split light; an imaging element configured to converge a light beam; a controller configured to move the imaging element to realize autofocus, and connected to the imaging element; and a detector; and an incident light is diffracted through the grating to the imaging element, and then converged to the detector through the imaging element to obtain spectrogram information. The present disclosure automatically adjusts the imaging element position according to the configuration and operation state of the spectrometer, so that the spectrometer can be automatically kept at an optimal imaging position and exert the best performance thereof.

This disclosure provides an illumination device, including: a light source, configured to emit a light beam; a Fresnel lens, located on an optical path of the light beam to converge the light beam; and a microlens array, located on the optical path of the light beam, and located downstream of the Fresnel lens. When the light beam passes through the microlens array, an illumination light beam is formed and leaves the microlens array.

The embodiment of the utility model discloses an optical beam splitting system. The optical beam splitting system comprises a beam splitter module, a photovoltaic assembly module and a photo-thermal receiving module, the spectroscope module comprises a first surface and a second surface which deviate from each other, the first surface and the second surface protrude in the direction that the first surface points to the second surface, and the curvature of the spectroscope module is variable; the spectroscope module is used for reflecting light with a specific wave band in the incident sunlight on one side of the first surface to obtain a convergent light beam, and transmitting light with an unspecific wave band in the incident sunlight to obtain a scattered light beam; the photo-thermal receiving module is located on the propagation path of the convergent light beams, and the photovoltaic assembly module is located on the propagation path of the scattered light beams. According to the optical beam splitting system, the energy of the full spectrum of sunlight is fully utilized, the photoelectric energy conversion efficiency of the whole system is improved, the utilization rate of the sunlight is improved, the influence of wavebands such as ultraviolet rays on aging of photovoltaic materials is avoided, and the service life of the photovoltaic materials is prolonged.

The invention provides an optical fiber spectrum system with a space target tracking function, and relates to the technical field of space target tracking, and the system comprises a light splitting element which is used for receiving a convergent light beam from an external telescope; the imaging camera is connected with the focusing table, and the imaging camera is used for receiving the first light beam and collecting an image of the space target to obtain position information of the space target; the multi-mode optical fiber is fixed on the lifting table, the lifting table is fixed on the high-precision translation table, the lifting table is used for driving the multi-mode optical fiber to focus, and the high-precision translation table is used for driving the lifting table and the multi-mode optical fiber to move according to space target position information acquired by the imaging camera, so that a second light beam is accurately coupled to the multi-mode optical fiber; the optical fiber spectrum module is connected with the multi-mode optical fiber and is used for receiving the second light beam transmitted by the multi-mode optical fiber and acquiring the spectrum of the space target; according to the invention, the problem of poor spectrum acquisition stability caused by insufficient tracking precision of the existing spectrograph is effectively solved.

The utility model relates to the technical field of optics, in particular to a wide-spectrum zoom optical imaging system for welding seam detection, which comprises a first fixing group, a zoom group, a compensation group, a second fixing group and a filter disc group which are sequentially arranged along a first direction. The first fixed group is fixedly arranged and is used for correcting distortion and converging light beams; the zoom group is movably arranged along a first direction and is used for correcting spherical aberration; the compensation group is movably arranged along a first direction and is used for correcting wide-spectrum chromatic aberration and converging a target light beam; the compensation group comprises an aperture diaphragm, a first negative lens, a first positive lens and a second negative lens which are sequentially arranged at intervals, and the light-out surface of the first negative lens and the light-in surface of the first positive lens are diffraction surfaces; the second fixed group is fixedly arranged and is used for correcting field curvature and converging the target light beam to the filter disc group; the filter disc group is fixedly arranged and used for filtering the target light beam to realize imaging. Therefore, wide-spectrum, high-quality and high-resolution imaging is ensured, the zoom range is large, and the structure is simple and compact.

A projector for projecting an image includes an LED array (2) having separately-controllable LEDs for illuminating a spatial light modulator (SLM) (10) via illumination optics (8) with a converging beam. Projection optics (12) projects the image generated by the SLM. A reflective arrangement (16) typically having four planar reflectors, is deployed between the LED array (2) and the illumination optics (8) so that light from each of LED illuminates a first region of the SLM by direct transmission from the LED via the illumination optics and additional regions of the SLM via reflection in the planar reflectors.

A method implemented by an optical system and a computing system allows for measuring of an optical surface by collimating a divergent beam. A divergent beam is emitted from the beam transceiver, to the testing surface, and to the referenceable collimator in order to convert the divergent beam into a convergent beam. The convergent beam is then reflected from the referenceable collimator, to the testing surface, and to the beam transceiver. The beam transceiver then captures a current image of the convergent beam. The computing system then executes an estimation process by inputting the current image into the estimation process. The computing system finally executes the estimation process with the computing system by outputting a surface profile of the testing surface with the estimation process.

The utility model discloses a compact type ten times continuous zoom optical system for security, it includes front fixed group, zoom group, compensation group, rear fixed group and image surface, front fixed group includes two pieces of spherical positive lens and a piece of spherical negative lens, corrects distortion and converges light beam, zoom group includes two pieces of spherical negative lens and a piece of spherical positive lens, corrects chromatic aberration, compensation group includes a piece of aspheric positive lens, a piece of spherical negative lens and a piece of spherical positive lens, corrects spherical aberration and converges light beam, rear fixed group includes a piece of aspheric positive lens and two pieces of spherical negative lens, corrects field curvature and converges to image surface and forms the image. The optical system provided by the utility model, its image side F number is 2.4, and the resolution is high, and the imaging quality is good, the system structure is compact and simple, and the total length is only 290mm, and the stability is high, and the cam curve is smooth and has no inflection point, and is easy to process and install and adjust, is used for security system, can realize fine identification in wide range, and has wide application prospect.