27 results about "Longitudinal optical" patented technology

The invention discloses a high-precision detection and calculation method for optical reflection and mechanical deflection centers of a precise rotating mirror. According to the invention, the direction of the laser beam emitted by the laser is adjusted, the precise rotating mirror is controlled to carry out sine scanning rotation at the same time, and the corresponding transverse displacement change of the beam is calculated, so that the target incident angle of the measurement beam incident on the precise rotating mirror is determined; under a target incident angle, a laser beam emitted by a laser or a precise rotating mirror is translated, the precise rotating mirror is controlled to perform sine scanning rotation, corresponding longitudinal optical path change of an optical path is calculated, and the position of an optical reflection center of the precise rotating mirror is detected by utilizing the longitudinal optical path change of the optical path and transverse displacement change of the laser beam. And the position of the mechanical deflection center of the precise rotating mirror is detected. According to the invention, high-precision detection of the positions of the optical reflection center and the mechanical deflection center of the precise rotating mirror can be realized, and the optical path error of an optical path is effectively reduced.

The present invention discloses a high-precision detection and calculation method for the optical reflection center and mechanical deflection center of a precision rotating mirror. In the present invention, by adjusting the direction of the laser beam emitted by the laser, and simultaneously controlling the precision rotating mirror to perform a sinusoidal scanning rotation, the corresponding change in the lateral displacement of the beam is calculated, so as to determine the target incident angle at which the measuring beam is incident on the precision rotating mirror; at the target incident angle, the laser beam emitted by the laser or the precision rotating mirror is translated, and simultaneously the precision rotating mirror is controlled to perform a sinusoidal scanning rotation, the corresponding change in the longitudinal optical path of the optical path is calculated, and the position of the optical reflection center of the precision rotating mirror is detected by using the change in the longitudinal optical path of the optical path and the change in the lateral displacement of the beam, and further the position of the mechanical deflection center of the precision rotating mirror is detected. The present invention can achieve high-precision detection of the positions of the optical reflection center and mechanical deflection center of the precision rotating mirror, and effectively reduce the optical path error.

An optical reflective device is disclosed, the device comprising a waveguide and a longitudinal light homogenizing structure mounted to a surface of the waveguide. The light homogenizing structure can receive input light and generate longitudinal homogenized light by homogenizing the input light along the longitudinal dimension of the waveguide. A cross-coupler in the waveguide can receive the longitudinal homogenized light from the light homogenizing structure and can generate two-dimensional homogenized light by redirecting the longitudinal homogenized light along the lateral dimension of the waveguide. The light homogenizing structure can include a partially reflective layer, a stacked substrate layer with a refractive index mismatch, and / or a combination of a partially reflective layer and a completely reflective layer. The cross-coupler and / or the partially reflective layer can be formed using a hologram group. A prism or an inclined substrate surface can couple the input light into the substrate.

The application discloses a transparent controlled zoom optical system with ciliary muscle induced regulation function, which is transparent and arranged on the light path between a human eye and an observation target object; the system comprises a control module for driving continuous longitudinal displacement of an optical focus; the system can be controlled to generate smooth and continuous change of diopter, so that the virtual image focus is generated to make smooth and continuous reciprocating displacement along the optical axis direction. The application does not rely on digital space modeling, directly generates continuous and smooth focus displacement on the longitudinal optical axis through controlled change of physical parameters of an optical medium, utilizes the passive and natural following characteristics of the human eye to the focus, stretches the ciliary muscle, intervenes in pseudo myopia and relieves visual fatigue.

The invention relates to the technical field of drying equipment, in particular to a transportation robot for automatic drying equipment. Comprising a height telescopic mechanism, a grabbing telescopic mechanism and a guide rail shaft. The height telescopic mechanism comprises two sliding blocks which are arranged in parallel, the front ends of the sliding blocks slidably sleeve the transverse optical axis, the rear ends of the sliding blocks slidably sleeve the guide rail shaft, the upper sides of the two sliding blocks are each fixedly provided with a longitudinal optical axis, a base block is fixed between the two sliding blocks, and the bottom sides of the two ends of the two sliding blocks are each connected with a lifting connecting rod; after two adjacent lifting connecting rods are crossed, the lower end is connected with a square-frame-shaped gripper supporting piece; the grabbing telescopic mechanism comprises four grabbing arms fixed to the four corners of the square-frame-shaped grabbing hand supporting piece. A cylindrical gear is arranged in the base block, and the two sides of the cylindrical gear are meshed with a right synchronous rack and a left synchronous rack which are fixed to the sliding block respectively. An air cylinder is fixed outside the left sliding block, and an ejector rod of the air cylinder is fixedly connected with the side face of the base block. The top faces of the grabbing arms are each fixedly provided with a grabbing air cylinder, and a grabbing air cylinder push rod is connected with a telescopic grabbing piece.

The application discloses a device and method for detecting energy carrier dissipation behavior in thermal insulation materials, which comprises: a laser emission module for emitting a laser beam; a first filter for separating the laser beam; a supercontinuum beam forming device for processing the second laser beam; a phase delay line for phase delaying the first laser beam; the wavelength range of the supercontinuum beam is wider than that of the pump beam; a second filter for combining the supercontinuum beam and the pump beam, and then irradiating the surface of the sample and being transmitted by the sample; a photodetector collects the transmitted beam; a controller controls the delay time change of the phase delay line once, receives the transmitted beam once, processes each transmitted beam, obtains the corresponding time-resolved broadband spectral coherent anti-Stokes shift, and extracts the longitudinal optical phonon dephasing process of the sample according to the anti-Stokes shift. Multimodal coherent phonon detection of the sample is realized.

The invention belongs to the technical field of crystal growth, and particularly relates to a low-base plane dislocation P-type silicon carbide crystal, a substrate, growth equipment and a growth method. The low-base plane dislocation density P-type silicon carbide crystal has no ridge plane dislocation, BPD is in the [11-20] direction, the BPD included angle is smaller than 60 degrees, the BPD density is smaller than or equal to 50 cm <-2 >, the BPD distance is larger than or equal to 0.1 mm, the in-plane density change rate is smaller than or equal to 10%, the rocking curve full width at half maximum of the (0004) plane is smaller than 20 arcsec, the in-plane average value deviation is smaller than 3 arcsec, and the base plane deflection angle lt is achieved. 0.2 degree; the Raman spectrum longitudinal optical phonon and plasmon coupling mode has a full width at half maximum of 10-17 cm <-1 >. According to the invention, the seed crystal with the convex structure is mechanically connected with the seed crystal support, so that thermal stress generated in crystal growth and cooling stages due to non-uniformity of a carbon adhesive or different thermal expansion coefficients between a graphite material and silicon carbide is avoided, and the low-base plane dislocation density P-type silicon carbide crystal is obtained.

A spectroscopic gas sensor (1) comprising a multipass absorption cell (4) is described. The multipass absorption cell (4) comprises a component reflector unit (5) defining a concave first surface (6') with a first centre of curvature (19) and comprising at least one first reflector (6), and a main reflector unit (7) comprising a concave second reflector (8) defining a second centre of curvature (17) and a concave third reflector (9) defining a third centre of curvature (18). The component reflector unit (5), the second reflector (8), and the third reflector (9), are arranged in a White cell configuration. A light source (11) is configured to emit and direct light towards the concave second reflector (8). A first detector (15) is arranged in the component reflector unit (5) such that it is illuminated by a light spot during operation of the gas sensor (1). The component reflector unit (5) comprises an optical return unit (20) comprising a light input (LI) at a first distance from the longitudinal optical plane (C).

The application provides a single-frequency distributed feedback semiconductor laser and a preparation method thereof, and relates to the technical field of lasers. The laser comprises an epitaxial structure, wherein the epitaxial structure comprises an active region, a grating layer and an upper P-side waveguide layer arranged in sequence along an epitaxial direction; along a cavity length direction, and from a high-reflection end to an anti-reflection end of the epitaxial structure, the epitaxial structure comprises a first longitudinal section, a second longitudinal section and a third longitudinal section; a λ / 4 phase shift region of the grating layer is located in the second longitudinal section; portions of the upper P-side waveguide layer located in the first longitudinal section, the second longitudinal section and the third longitudinal section are respectively set as a first portion, a second portion and a third portion; material compositions of the first portion, the second portion and the third portion are all different, and / or, thicknesses of the first portion, the second portion and the third portion are all different, so that a longitudinal optical confinement factor of the active region decreases from the high-reflection end to the anti-reflection end.

The invention discloses a tool life monitoring type target object pre-separation device based on a random forest regression algorithm, and belongs to the field of artificial intelligence cognitive electromechanical integration. The cutter distance adjusting mechanism is installed above the cutter rest assembly and the supporting metal plate assembly, the transverse linear sliding rail guiding assembly is installed below the sliding rail guiding and supporting assembly, and the sliding rail guiding and supporting assembly is installed above the supporting metal plate assembly. The tool rest combination body is installed below the transverse linear sliding rail guide assembly, and the supporting metal plate assembly is connected with the longitudinal screw sliding assembly and the longitudinal optical axis sliding guide assembly. The two ends of the longitudinal screw sliding assembly and the two ends of the longitudinal optical axis sliding guide assembly are installed on the end faces of an upper square plate and a lower square plate of the rack, the manual rotating positioning table assembly is installed on the end face of the lower square plate of the rack, and the motor driving chain assembly is installed at the lower end of the lower square plate of the rack and connected with the longitudinal screw sliding assembly. The service life condition of the cutter can be predicted and displayed, and the distance between cutters can be adjusted.

The utility model relates to a wireless charging pile capable of self-adapting to the position of a power receiving end, which comprises a base, a case is arranged on the base, two transverse optical axes are arranged between the left inner wall and the right inner wall of the case, a self-adapting adjusting sliding block and a transverse spring are arranged on the transverse optical axes, and two longitudinal optical axes penetrate through the front face and the back face of the self-adapting adjusting sliding block. The front and rear sides of the self-adaptive adjusting sliding block on the longitudinal optical axis are sleeved with longitudinal springs; the front end of the longitudinal optical axis is provided with a bearing seat and a thrust rotating bearing; the thrust rotating bearing is provided with a rotating shaft; the rotating shaft is provided with a fixed seat; a wireless charging transmitting end is installed at the front end of the reflecting end fixing plate, POM guide plates are installed on the transmitting end fixing plate in a bilateral symmetry mode, and an extension spring is installed between the reflecting end fixing plate and the machine box. According to the utility model, the charging efficiency of the inspection robot is improved, the charging time is saved, and the use efficiency of the charging pile is improved.

The invention provides a measurement system for infinitesimal displacement, and the system comprises a laser transmitting module which is used for transmitting an original laser beam; the light beam shaping module is used for shaping the original laser beam and outputting a vortex light beam and a plane wave reference light beam; the focusing module is used for superposing the vortex light beam and the plane wave reference light beam to construct a measurement focal field, and the measurement focal field comprises a longitudinal optical singular point; the imaging acquisition module is used for acquiring a real image of a longitudinal optical singular point in a measurement focal field; and the data processing module is electrically connected with the imaging acquisition module and is used for determining the displacement of the focusing module according to the real image. The unique advantages that the spatial scale of a longitudinal optical singular point is infinitely small and the phase gradient is steep are fully utilized, optical diffraction limit restriction caused by the fact that a traditional optical metering method depends on a structured light field or an interference effect is avoided, and the precision of a displacement reference datum is improved.

The invention discloses a slope deformation monitoring method and system, and is applied to the technical field of intelligent monitoring, and the method comprises the steps: laying a plurality of equidistant transverse optical fibers and a plurality of equidistant longitudinal optical fibers on a target slope; performing micro-disturbance at a fixed point position on the target slope, and acquiring vibration data at a feature point through the transverse optical fiber and the longitudinal optical fiber; the feature points are intersection points of the transverse optical fibers and the longitudinal optical fibers; and according to the vibration data of the adjacent feature points, identifying an area of a landslide mass of the target slope, and monitoring the landslide mass through the transverse optical fiber and the longitudinal optical fiber. According to the method, the area where the landslide mass is located can be effectively monitored for key monitoring, so that invalid monitoring is greatly reduced, the slope monitoring efficiency is improved, early warning can be better carried out on slope instability, and losses caused when disasters happen are reduced.

The application discloses a tool life monitoring type target object pre-separation device based on a random forest regression algorithm and belongs to the field of artificial intelligence cognitive mechatronics. A cutter spacing adjusting mechanism is installed above a tool holder assembly and a support sheet metal assembly, a horizontal linear slide rail guide assembly is installed below a slide rail guide support assembly, and the slide rail guide support assembly is installed above the support sheet metal assembly. The tool holder assembly is installed below the horizontal linear slide rail guide assembly, and the support sheet metal assembly is connected with a longitudinal screw sliding assembly and a longitudinal optical axis sliding guide assembly respectively. Two ends of the longitudinal screw sliding assembly and the longitudinal optical axis sliding guide assembly are installed on end faces of upper and lower square plates of a rack, a manual rotary positioning table assembly is installed on an end face of a lower square plate of the rack, and a motor driving chain assembly is installed at a lower end of the lower square plate of the rack and connected with the longitudinal screw sliding assembly. The application can predict and display the life condition of a tool and also can adjust the distance between cutters.

The invention discloses a link reconfigurable optical chip. The chip comprises a plurality of transverse optical waveguide buses and a plurality of longitudinal optical waveguide buses, the two ends of the transverse optical waveguide bus or the longitudinal optical waveguide bus are connected with grating coupler ports; an MEMS switching device is arranged in a cross connection area of each transverse optical waveguide bus and each longitudinal optical waveguide bus, so that the plurality of MEMS switching devices are arranged in matrix rows and columns; a coupling waveguide is arranged in each MEMS switching device, and link switching is carried out on optical signals through the coupling waveguides by controlling the opening and closing states of the MEMS switching devices, so that access from any grating coupler port to any grating coupler port is realized. Compared with a traditional Cross-Bar structure, under the condition that extra nodes are not increased, the port connection multiple is doubled, and the random addressing function of the on-chip port is achieved.

The present application relates to a kind of multi-polarization incident microscopic raman spectrum stress detection method, belong to optical microscopic measurement technical field;The present application utilizes radial polarized light under high numerical aperture (NA) objective lens incidence to realize the simultaneous excitation and acquisition of longitudinal optical (LO) phonon and transverse optical (TO) phonon in conjunction with polariscope, utilizes angular polarized light under high NA objective lens incidence to realize the independent excitation and acquisition of LO phonon in conjunction with polariscope.Independent excitation LO peak under angular polarized light incidence is used as prior signal, the effective separation of TO peak and LO peak excited by radial polarized light incidence is realized, and then the principle error introduced in the TO peak difficult to excite or difficult to separate from LO peak in the traditional raman spectrum stress detection method is eliminated, and the accurate measurement of microscale three-axis principal stress is realized;The present application effectively improves the stress detection precision of silicon material and gallium arsenide material semiconductor device under complex stress condition.

A method of measuring a film thickness includes: storing, in a storage, relationship information indicating a relationship between an absorbance spectrum of a substrate, which has a recess formed therein and is subjected to substrate processing, and a film thickness of a film in the substrate subjected to the substrate processing, the absorbance spectrum being within a range including a peak of at least one of LO (Longitudinal Optical) phonons or TO (Transverse Optical) phonons of the film present on a surface of the substrate; performing the substrate processing on the substrate having the recess formed therein; measuring the absorbance spectrum of the substrate subjected to the substrate processing; and deriving, based on the relationship information, the film thickness of the film present on the surface of the substrate subjected to the substrate processing, from the measured absorbance spectrum.

The utility model discloses a space light excitation acquisition device for a hand-held Raman spectrometer, which comprises a laser acquisition module, a laser module and a Raman signal enhancement module, the laser acquisition module comprises a laser acquisition support, and a transverse light path channel and a longitudinal light path channel which are vertically crossed are arranged in the laser acquisition support. A dichroscope is mounted at the crossed position, and a narrow-band filter and an extinction cone are mounted in the transverse light path channel; a sample detection head is in threaded connection with one end of the longitudinal light path channel, a laser focusing lens is mounted in the end part, far away from the longitudinal light path channel, of the sample detection head, and a long-wave-pass optical filter and a Raman light acquisition lens are sequentially mounted in the other end of the longitudinal light path channel. According to the utility model, the Raman light acquisition lens is adopted to replace optical fiber coupling, so that the device is compact and reasonable; the laser passing through the sample bottle and the Raman scattering light scattering backwards can be collected and converged again, so that the finally measured Raman signal is multiplied; and the problem of fluorescence interference can be effectively solved.

The application discloses a slope deformation monitoring method and system, and applies to the technical field of intelligent monitoring.The method comprises the following steps: arranging a plurality of equidistant transverse optical fibers and a plurality of equidistant longitudinal optical fibers on a target slope; performing a slight disturbance at a fixed point on the target slope, and acquiring vibration data of a characteristic point through the transverse optical fibers and the longitudinal optical fibers; the characteristic point is an intersection of the transverse optical fibers and the longitudinal optical fibers; identifying a region of a landslide body of the target slope according to vibration data of adjacent characteristic points, and monitoring the landslide body through the transverse optical fibers and the longitudinal optical fibers.The application can effectively monitor the region where the landslide body is located for key monitoring, thereby greatly reducing invalid monitoring, improving the efficiency of slope monitoring, and further better performing early warning for slope instability, and reducing losses when disasters occur.

The application relates to the technical field of optical detection, in particular to an intelligent omnidirectional measuring device integrated on a conveying belt, which comprises a transverse conveying belt group installed on a main rack, and an electric control lifting support and an electric control overturning limiting plate are installed on the upper surface of the main rack. The intelligent omnidirectional measuring device integrated on the conveying belt translates the flywheel shell through the transverse conveying belt group composed of multiple electric control conveying belts with gaps between each other, and the bottom, side and interior of the flywheel shell are optically measured through a strip-shaped under optical measuring module, a strip-shaped side optical measuring module and a longitudinal optical measuring module during the translation, so that the detection area and detection efficiency are greatly improved; the flywheel shell is monitored during the conveying process, and the lifting separation detection does not affect the conveying of the subsequent flywheel shell, and the upper end opening of the flywheel shell can be controlled to be sleeved on the periphery of the longitudinal optical measuring module, so that the internal detection is facilitated.

The utility model discloses a kind of auxiliary workpiece laser welding equipment, including cutting workbench and lifting workbench, positioning frame is provided on lifting workbench, and feeding belt is provided in the position of cutting workbench close to lifting workbench;Cutting workbench both sides are provided with X-axis moving track, beam is provided on X-axis moving track, beam is provided with Y-axis moving track, Z-axis cutting assembly is provided on Y-axis moving track;Z-axis cutting assembly includes the sliding base adapted with Y-axis moving track, sliding base top is provided with drive cylinder, side is provided with positioning mirror frame and moving slide, positioning mirror frame is provided with optical path reflection component, moving slide is connected with drive cylinder, longitudinal optical path cover and adjusting seat are provided on moving slide, adjusting seat bottom is provided with cutting head.The utility model compared with general cutting machine, positioning frame is separated from workbench, can automatically replace positioning frame while still being able to freely adjust the three-axis position of cutting head, and use effect is good.

This disclosure provides a semiconductor gain chip based on asymmetric multiple quantum wells, comprising: a lower electrode layer (201), a substrate layer (202), a buffer layer (203), a lower waveguide layer (207), a buried active region (208), an upper waveguide layer (209), a capping layer (205), and an upper electrode layer (206) stacked sequentially; the lower waveguide layer (207), the buried active region (208), and the upper waveguide layer (209) together constitute a longitudinal optical waveguide; the buried active region (207) 208) is an asymmetric multi-quantum-well structure containing at least two quantum wells that are different in thickness and / or material composition, so that the gain spectral peaks of each quantum well are staggered; the longitudinal optical waveguide includes a tapered straight waveguide segment (301) and a curved waveguide segment (302) connected in sequence; the tapered straight waveguide segment (301) has a width that gradually changes along its length direction, and the optical axis extension direction of the curved waveguide segment (302) has a non-zero angle with respect to the optical axis direction of the tapered straight waveguide segment (301).

A pulsed polarization-based method for suppressing angular velocity coupling noise involves applying pulsed pump light and measuring the electron spin decay oscillation signal after the pump light is turned off. The decoupling phase of the angular velocity measurement is calibrated using the Earth's rotational angular velocity as the standard angular velocity input. The angular velocity input information is then derived from the decay oscillation signal amplitude. This method facilitates angular velocity decoupling measurements of the coupled spin ensemble of alkali metal electron spins and inert gas nuclear spins. The method is rational, simple to perform, and applicable to conditions such as longitudinal optical frequency shifts introduced by the pump light and interactions between coupled spin ensembles. It can suppress angular velocity coupling noise and provides a foundation for the development of high-precision atomic spin inertial measurement devices.

In this method for manufacturing two or more layers of optical components including a support layer and one or more other layers, the support layer is a photosensitive substrate (81) containing a photosensitive substance in at least a part thereof, a pair of punched parts (82) to be both ends in the width direction of the outer frame shape of the longitudinal optical component are formed on the photosensitive substrate (81) serving as the support layer by lithography, a film to be the other layer is laminated on the support layer, and both ends in the longitudinal direction of the pair of punched parts (82) formed on the support layer are cut off to singulate the optical component.

A multifunctional molecular additive based on phenylhydrazine for perovskite solar cells, its preparation method, and its application; the multifunctional molecular additive based on phenylhydrazine has the structures shown in formulas I to III; wherein the amide group can combine with PbI2 to form an adduct, and with free I... ‑ Competition with Pb 2+ This combination increases the reaction barrier during perovskite growth, thereby reducing the crystallization rate and effectively minimizing non-radiative convergence, thus improving photoelectric conversion efficiency; F atoms can modulate the dipole moment of the additive and interact with charged A atoms. + The groups form hydrogen bonds, thus the additive successfully stitches up the defects at the perovskite grain boundaries and releases the grain boundary stress, thereby obtaining low Young's modulus and high mechanical flexibility. At the same time, the additive can weaken the interaction between charge carriers and longitudinal optical phonons and promote the extraction and transport of charge carriers. More importantly, the additive with strong molecular dipoles can better improve the efficiency and stability of perovskite solar cells.

A substrate evaluation method includes: a measurement operation of measuring an absorbance spectrum in a wavenumber range including a peak of at least one of a LO (Longitudinal Optical) phonon or a TO (Transverse Optical) phonon by analyzing a substrate having an anisotropic structure formed thereon with an infrared spectroscopy analysis; and a derivation operation of deriving evaluation information about the anisotropic structure from the measured absorbance spectrum.

A spectral gas sensor (1) comprising a multi-path absorption cell (4) is described. The multi-path absorption cell (4) comprises: a component reflector unit (5) defining a concave first surface (6 ') having a first center of curvature (19) and comprising at least one first reflector (6); and a main reflector unit (7) comprising a concave second reflector (8) defining a second center of curvature (17) and a concave third reflector (9) defining a third center of curvature (18). The component reflector unit (5), the second reflector (8) and the third reflector (9) are arranged in a White cell configuration. The light source (11) is configured to emit and direct light towards the concave second reflector (8). A first detector (15) is arranged in the component reflector unit (5) such that the first detector is illuminated by a light spot during operation of the gas sensor (1). The component reflector unit (5) comprises an optical return unit (20) comprising a light input (LI) at a first distance from the longitudinal optical plane (C).