21 results about "Convergent beam" patented technology

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.

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 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 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.

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.

The utility model discloses an imaging optical system of a spectrum confocal microendoscope. The imaging optical system comprises an object plane, a front lens group, a transition lens, a rear lens group and an image plane, the front lens group comprises a spherical positive lens and two spherical negative lenses, and is used for correcting distortion and converging light beams; the transition lens is an aspheric positive lens and is used for correcting spherical aberration; the rear lens group comprises two spherical negative lenses, corrects field curvature and converges on an image plane for imaging. The imaging optical system provided by the utility model has a wide view field of 600 microns, realizes large-depth, wide-view-field and high-resolution microscopic endoscopic imaging, can detect section information of different depths, and obtains more comprehensive tissue information; the system is small in size, the caliber is only 2.8 mm, and the optical performance of clinical diagnosis can be met; the system is compact and simple in structure, easy to install and adjust and wide in application prospect.

The invention relates to a projection device comprising a beam generator (140) for generating a modulated collimated or convergent light beam (LBM) and a mirror unit (73) for reflecting the modulated light beam (LBM) and for moving the reflected light beam (LBR) over a predetermined solid angle range. The mirror unit (73) comprises at least one mirror element (730, 7301, 7302), which is or is suspended, individually or together, to oscillate about two non-parallel axes (ARot1, ARot2), being driven to oscillate about the first axis (ARot1) at a first frequency (F1) and about the second axis (ARot2) at a second frequency (F2). The first frequency (F1) and the second frequency (F2) are the same, and the first amplitude (A1) and / or the second amplitude (A2) vary over time. The frequencies (F1,F2) can also vary over time.

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).

The invention relates to the alignment device (10) for aligning a laser beam folding optical system, the folding optical system comprising a first (E1) and a second (E2) set of N mirrors, the alignment device (10) comprising: a first (DO1), a second (DO2) and a third (DO3) observation device, a first removable partially reflective device (DPR1), configured to be positioned, during alignment, in a plane including the interaction point (PI), a second partially reflective device (DPR2) configured to generate a transmitted fraction (TF) and a reflected fraction (RF), a first fraction, chosen from the transmitted fraction and the reflected fraction, being directed towards the second observation device, and the second fraction being directed towards the third observation device (DO3),The third observation device is configured to acquire a third image (Im3) of the interaction point (PI), and a selective shuttering device (DOS) is configured to selectively shutter one or more chosen converging beams. Figure 3,