13 results about "Longitudinal optical" patented technology

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 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 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 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 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.

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).

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 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).