36 results about "Rectangular aperture" patented technology

The invention relates to the technical field of high-power / high-energy optical passive devices, in particular to a high-length-width-ratio rectangular-aperture Faraday rotator which comprises a circular-hole rectangular light through hole, the middle of the circular-hole rectangular light through hole is rectangular, and the two ends of the circular-hole rectangular light through hole are semicircular. The space waste of a conventional circular light through hole Faraday rotator in the width direction of the rectangular light through surface is overcome, the adaptability of the light through hole of the device to a rectangular light spot application scene is improved, and the size, the weight and the cost of the device are remarkably reduced.

The utility model discloses an automobile single-light lens module not prone to fogging, which comprises an end cover and a lens arranged in the end cover, the end cover is detachably connected with a lens support, a sealing gasket and a sealing surface are arranged in the end cover, the lens is tightly pressed on the sealing gasket and the sealing surface, the lens support is connected with a positioning mechanism used for positioning the end cover, and the lens support is connected with the end cover. The positioning mechanism comprises a positioning column, a smooth surface, a pushing block, a rectangular hole, a guide groove and a spring, the guide groove and the rectangular hole are formed in the lens support, the guide groove is used for guiding the positioning column, the smooth surface is arranged at the end of the positioning column, the spring is located in the guide groove, and the two ends of the spring are connected with the positioning column and the lens support; and the pushing block is used for driving the positioning column to reciprocate. According to the utility model, the lens can be conveniently positioned and fixed, the installation stability of the lens is improved, the sealing gasket and the sealing surface are matched for use, a dual-sealing effect is achieved, moisture is effectively prevented from entering, and a good anti-fog effect is achieved.

The utility model relates to the technical field of laser cladding powder feeding nozzles, in particular to a coaxial rectangular hole type laser cladding powder feeding nozzle which comprises at least two powder feeding nozzles and a cooling box, each powder feeding nozzle is provided with a powder feeding channel in the axial direction, the cooling box is provided with a cooling inner cavity, and the cooling inner cavity is provided with a rectangular hole. The cooling box is provided with a water inlet and a water outlet which are communicated with the cooling inner cavity, the cooling box is provided with a light path channel used for laser to pass through, the light path channel extends from the upper end of the cooling box to the lower end of the cooling box, and the end, penetrating through the cooling inner cavity, of the powder feeding nozzle is fixed to the cooling box. When the coaxial rectangular hole type laser cladding powder feeding nozzle is used, the nozzle is cooled through the cooling inner cavity, the whole structure is compact, the mass of the nozzle is remarkably reduced, the size of the cooling cavity is greatly increased, and therefore the excellent cooling effect is achieved.

The utility model belongs to the field of laminating equipment, and particularly relates to a stable optical gluing laminating device which comprises a box body, a placing table is fixedly mounted at the top of the box body, an L-shaped frame is fixedly mounted at the top of the placing table, a pressing mechanism for gluing optical glass is arranged on the L-shaped frame, a plurality of rectangular holes are formed in the top of the placing table and the top of the box body, and the rectangular holes are communicated with the L-shaped frame. Positioning seats for positioning optical glass are slidably mounted in the rectangular holes, threaded rods are rotatably mounted on the inner walls of the top and the bottom of the box body, threaded seats are arranged on the threaded rods in a threaded and sleeving manner, a plurality of hinge rods are hinged to the outer sides of the threaded seats, and the top ends of the hinge rods are hinged to the corresponding positioning seats. The optical glass gluing device is reasonable in design, multi-directional positioning of different optical glass can be achieved through movement of the multiple positioning seats, the optical glass is made to be located under the pressing head, meanwhile, the pressing head can be replaced, and the purpose of gluing the different optical glass can be achieved through the pressing head.

The application relates to a frequency reconfiguration waveguide antenna based on bottom end metasurface switching, which comprises an antenna, a waveguide cavity and a metasurface; the antenna is a rectangular waveguide antenna; the waveguide antenna has a fixed feed port, that is, a coaxial probe penetrating through the waveguide; the waveguide antenna radiation aperture is a rectangular aperture; the metasurface is a surface attached with a special metal structure. A slide rail is embedded outside the bottom end of the waveguide, and the metasurface with a phase modulation structure can be pulled out or pushed in; by pulling out or pushing in the metasurface, the antenna has two working states, that is, working state A and working state B, which correspond to two reconfiguration frequency bands of the antenna respectively. In the application, the waveguide antenna can realize rapid reconfiguration of the working frequency through switching of the bottom end metal surface, and the radiation performance remains stable.

The utility model discloses SMT steel mesh production equipment, which comprises a rack, a jig mechanism, a gluing and slicing mechanism, a camera mechanism and a first moving mechanism, the jig mechanism can be used for sequentially stacking a steel mesh sheet and a mesh frame with a connecting sheet, and can be used for pressing and fixing the steel mesh sheet and the mesh frame with the connecting sheet; the camera mechanism can take a picture to obtain the position of the pressed screen frame and control the first moving mechanism to work according to the position of the screen frame, so that the first moving mechanism drives the gluing and slicing mechanism to move along a first path and a second path in sequence, the gluing and slicing mechanism moving along the first path can glue an inner hole of the screen frame, and a connecting piece and a steel mesh piece are partially bonded; and the gluing and slicing mechanism moving along the second path can cut off the connecting piece part which is not glued and adhered in the inner hole of the screen frame, so that the connecting piece is provided with a rectangular hole located in the inner hole of the screen frame, and the rectangular part of the steel mesh can be exposed out of the inner hole of the screen frame through the rectangular hole. Through the structure, the labor cost invested in the production process can be reduced.

The utility model provides a directional dodging sheet which comprises a thin film structure layer, the thin film structure layer is arranged on the surface of one side far away from a thin film layer body, and a plurality of rectangular holes are formed in the top of the thin film structure layer. The light equalizing plate is reasonable in design, the substrate provides a setting basis for the thin film layer body and the thin film structure layer, the use reliability of the thin film structure layer is improved, meanwhile, the structural stability of the light equalizing plate is guaranteed, light is diffused to a required angle after passing through the thin film structure layer and then is emitted, and the light equalizing effect is improved. Uniform light spots are obtained on a light field receiving surface, and the uniformity of final imaging is ensured.

This utility model belongs to the technical field of equidistant slitting devices, specifically an equidistant slitting device for POF heat shrink film. Addressing the problem of inconvenience in increasing or decreasing the number of slitting blades according to slitting requirements and the inability to adapt to different slitting needs, the following solution is proposed: a first mounting plate; a fixing rod fixedly mounted on one side of the first mounting plate; multiple connecting plates movably mounted on the fixing rods, each connecting plate having a slitting blade mounted on it; a second mounting plate located at the end of the fixing rods away from the first mounting plate; a rectangular hole located on the second mounting plate, with a rectangular block fixedly mounted at the end of the fixing rod away from the first mounting plate, the outer side of the rectangular block contacting the inner wall of the rectangular hole; and a locking groove located at the bottom of the rectangular block. This utility model allows for the increase or decrease of the number of slitting blades as needed to meet different slitting requirements, with a simple structure and convenient use.

The utility model belongs to the field of UV (ultraviolet) glue, particularly relates to a UV glue curing device, and aims to solve the problems of poor curing effect and influence on the quality and the performance of the device due to non-uniform curing, inconvenience in operation and difficulty in meeting all-directional curing requirements by a fixed light source in the conventional curing mode. A first rectangular hole and a second rectangular hole are formed in the workbench, the second rectangular hole is located in one side of the first rectangular hole and communicated with the first rectangular hole, and the same fixing plate is fixedly connected between the inner walls of the two sides of the second rectangular hole. By means of the structure, a user can easily push a to-be-cured device into the upper protective shell, the sealing performance in the curing process is ensured through cooperation of the blocking plate and the notch, and the user can change the curing degree of UV glue in the device according to actual use requirements by adjusting the pushing frequency and position of the blocking plate.

The utility model relates to the technical field of optical lenses, in particular to an optical lens assembling structure which comprises an external lens, an assembling plate and a clamping mechanism, a rectangular hole is formed in the side wall of the assembling plate, the clamping mechanism is arranged in the rectangular hole, and the clamping mechanism comprises a fixed clamping plate and a movable clamping plate; the fixed clamping plate is fixedly arranged on one side of the assembling plate, and the movable clamping plate is fixedly arranged on the other side of the assembling plate through the clamping mechanism and used for rapidly fixing the external lens and the assembling plate to the back face of a mobile phone. The peripheral lens is slidably arranged in the rectangular hole, the positioning mechanism comprises a locking mechanism and a limiting mechanism, and a strip-shaped hole is formed in the hole wall of the lower side of the rectangular hole; the locking mechanism is arranged between the external lens and the strip-shaped hole, and the limiting mechanism is arranged on the side, away from the strip-shaped hole, of the external lens. According to the utility model, the assembling efficiency is greatly improved, the adjustable range is large, and the mobile phone lens assembling device can adapt to various mobile phones with different lens positions and is wide in application range.

The utility model relates to a prefabricated column mounting device which comprises a working table, one side of the working table is a low table top, and the other side of the working table is a high table top. A rectangular opening area is arranged in the middle of the low table top, first telescopic devices are fixed to the left end and the right end of the rectangular opening area, sliding rails are fixed to the front end and the rear end of the rectangular opening area, a sliding frame with an upper opening and a lower opening is slidably installed on the two sliding rails, and output shafts of the two first telescopic devices are connected with the left side and the right side of the sliding frame correspondingly. A plurality of second telescopic devices are fixed to the exteriors of the front side and the rear side of the sliding frame, and output shafts of the second telescopic devices extend into the sliding frame and are fixedly connected with clamping plates; a mounting plate is fixed to the high table top, the end, close to the sliding frame, of the mounting plate is hinged to one end of the pre-placing frame, a third telescopic device is mounted at the end, away from the sliding frame, of the mounting plate, and an output shaft of the third telescopic device is connected with the bottom of the other end of the pre-placing frame. According to the device, the prefabricated column is accurately and quickly positioned, the labor intensity of workers can be reduced, and the injury risk is reduced.

The utility model relates to the field of clamping equipment, and discloses a clamping device for a circular optical lens edge grinding machine, which comprises a shell, a rotating motor is fixedly mounted at the top of the shell, a lower clamping plate is fixedly mounted on an output shaft of the rotating motor, an L-shaped frame is fixedly mounted at the top of the shell, a hydraulic cylinder I is fixedly mounted at the top of the L-shaped frame, and a hydraulic cylinder II is fixedly mounted at the bottom of the hydraulic cylinder I; an upper clamping plate is rotatably mounted on an output shaft of the first hydraulic cylinder, a plurality of rectangular holes are annularly formed in the top of the shell at equal intervals, rectangular seats are slidably mounted in the rectangular holes, positioning holes are formed in the tops of the rectangular seats, and positioning seats used for positioning the circular optical lenses are slidably mounted in the positioning holes. The circular optical lens edge grinding device has the advantages that the circular optical lens can be positioned through the movement of the plurality of positioning seats in the horizontal and vertical directions, so that the circle center of the circular optical lens and the circle center of the lower clamping plate are positioned on the same axis, and the edge grinding error of the circular optical lens is reduced.

The application discloses a kind of dry granulator sight mirror mounting device, it is related to granulator equipment technical field.The present application includes frame and glass, the glass is arranged in the inside of frame, recess is set in the top inner wall and the bottom inner wall of frame, the top inner wall and the bottom inner wall of frame are fixedly connected with fixed strip, and there is gap between fixed strip and recess;Two inner pressure plates and two outer pressure plates, two the outer pressure plate is located in one side of glass, two the inner pressure plate is located in the other side of glass, and the inner pressure plate and outer pressure plate are fixedly connected by connecting assembly between them.The present application is installed by two inner pressure plates first, when inner pressure plate can not only help support glass, but also first release the braking of rectangular block, and the braking of shaft, while shaft rotates, rectangular rod and rectangular hole can also be used to engage, and four rectangular plates can be used to temporarily press glass, so that it is convenient to install outer pressure plate from outside, after installation is completed, four outer pressure plates can be reset, so that it is convenient to use next time.

Perimeter external surfaces of arrays of hard polymer coated optical fibers with precise concentricity are used as datum surfaces for aligning (with an inter-core misalignment tolerance of less than 1 μm) mechanically spliced optical fiber arrays received within a rectangular bore of a rigid sleeve that is devoid of fiber alignment grooves. A method for splicing arrays hard polymer coated optical fibers involves forming ribbonized segments of the arrayed optical fibers, and receiving non-ribbonized segments of the arrays in contact with one another and with walls defining a rectangular cross-section bore of a rigid sleeve. A rigid sleeve for mechanically splicing arrayed optical fibers includes a unitary body structure having a medial portion with a rectangular cross-section bore arranged between first and second extension portions each having a U-shaped channel, with continuous bottom and side walls between the medial and extension portions, and with the sleeve being devoid of fiber alignment grooves.

The invention discloses a spin-coating chamber structure for improving edge effect defects of a rectangular substrate. The spin-coating chamber structure comprises a chamber side wall, a rounding plate, a spin-coating bottom plate and a chamber top cover, a rectangular hole, a pressure relief groove and a drainage channel are formed in the rounding plate. Due to the fact that the drainage channels composed of the contraction sections, the throats and the diffusion sections are arranged outside the four corners of the rectangular hole of the rounding plate, spin-coating external tangential airflow is accelerated in the drainage channels, negative pressure areas are formed at the four corners of the base plate, liquid accumulated at the corners is promoted to be discharged outwards, and the volume of edge effect accumulated liquid is reduced. Due to the fact that the pressure relief groove is formed outside the drainage channel, a low-resistance relief channel is provided for airflow passing through the throat in the rotating process. Meanwhile, air at the outer edge flows at a high linear speed to form high dynamic pressure driving in the pressure relief groove, the venturi suction flow field characteristic is shown in the drainage channel, and the liquid at the angular point of the base plate is further promoted to flow out in the radial direction under the pressure effect.

The embodiment of the present invention discloses a laser profile detection device and detection method. The laser profile detection device includes a rectangular aperture module, an energy detector, a moving module, and a processing module; the rectangular aperture module is arranged at the light output end of the light beam generating module, and the rectangular aperture module includes a rectangular light-through hole; the energy detector is arranged on the light-outlet side of the rectangular light-through hole, and is used to detect the light intensity of the light transmitted by the rectangular light-through hole; the moving module is connected to the light beam generating module and / or the rectangular aperture module, and is used to drive the light beam generating module and / or the rectangular aperture module to move, so that the rectangular light-through hole sequentially passes the light at each position of the laser beam; the processing module is electrically connected to the energy detector, and is used to obtain the two-dimensional profile distribution of the laser beam according to the signal received by the energy detector. The technical solution of the embodiment of the present invention can realize the spot profile measurement compatible with large size, mid-to-far infrared, and large aspect ratio.

The application relates to a large-diameter space remote sensing camera recoverable unlocking support, in a locking state, two explosive bolts are respectively connected with upper and lower sections of a threaded connecting cylinder after penetrating through central holes of an upper pressing block and a conical block, four wedge blocks are uniformly distributed along the circumference of the threaded connecting cylinder, two wedge grooves on the wedge blocks are matched with a first conical boss of an upper support and a second conical boss of a lower support respectively, a rectangular groove is used for installing and placing an annular spring, a leaf spring is hung on a lower support annular groove through a through hole of the wedge block and a rectangular hole of the upper pressing block, and the upper end of the leaf spring is fixed with the upper pressing block; the explosive bolts are exploded and unlocked, the wedge grooves are separated from the conical bosses, the conical block is withdrawn, and the four wedge blocks are recovered together and clamped on the threaded connecting cylinder. After unlocking, all free structural members in the support are constrained and recovered, the risk that the free structural members are irregularly moved to cause the support to be stuck or the free structural members are moved to the outside of the support to become redundant objects is eliminated, and the requirement of a large movement distance after the support is unlocked can be met.

This utility model relates to a crystal head testing and error-proofing device in the field of crystal head error-proofing technology. It includes a processing table with a rectangular hole. A rectangular plate is rotatably connected inside the rectangular hole via a pair of rotating shafts. When adjusting the angle of the crystal head, the moving frame must be manually pulled upwards to remove the lower end of the connector from the insertion slot. Simultaneously, the connector block pulls up a spring, causing it to be stretched further. Then, the rectangular plate is rotated up and down, causing the crystal head to rotate up and down as well, thereby adjusting the angle of the crystal head. After adjusting the angle, the external force applied to the moving frame is removed, causing the spring to pull the connector block, the moving frame, and the connector downwards together, allowing the lower end of the connector to be inserted into the corresponding insertion slot, thus fixing the rotating shaft and the rectangular plate. This application provides a simple and time-saving procedure for adjusting the crystal head, making it convenient for personnel to use when processing and testing crystal heads.

This invention discloses a variable rectangular aperture for a lithography exposure system, comprising two sets of opposing aperture assemblies. Each aperture assembly includes a linear drive module, an aperture plate, and a connector. The aperture plate is mounted on the connector, which is connected to the linear drive module. This invention, by precisely controlling the exposure field size, can minimize ineffective exposure areas (such as covering only the chip itself, rather than the entire standard exposure field including the dicing trace), reduce interference from ambient stray light on wafer exposure quality, reduce photoresist waste and exposure time, improve silicon wafer utilization, and ultimately reduce the cost per chip.

The invention belongs to the technical field of aero-engines, and particularly relates to a blind hole method residual stress testing device and an operation method thereof. The first support and the second support are both of a semicircular structure, are perpendicular to each other through lugs at the two ends, can rotate and are hinged to the base in a positioning mode, and a hemispherical space is defined by the first support and the second support and the base. The first support and the second support are both provided with guide grooves, and the guide grooves of the first support and the second support form a rectangular hole for installing a sleeve at the intersection. The sleeve can be mounted in the rectangular hole in a sliding or positioning manner along the guide groove; the objective table is rotatably mounted on the base in a positioning manner and is positioned in the hemispherical space, and a clamp for clamping a tested piece is arranged on the objective table; the visual lens is detachably mounted on the sleeve and is used for observing the tested piece and positioning the sleeve; and the drilling device is arranged in the positioned sleeve and is used for drilling a blind hole in the tested piece.

The application provides a rectangular aperture curved surface form error compensation method and system, and belongs to the field of ultra-precision machining of free-form optical elements. The method comprises the following steps: based on the optimal moving path, the workpiece surface is machined, the coordinates and actual height values of each point on the curved surface form are collected, and the machining error is obtained; the machining error curved surface is normalized by using the Zernike polynomial to fit the predicted error curved surface; the optimal moving path in the machining process is corrected by taking the negative of the predicted error curved surface, and the workpiece surface is re-machined until the machining error meets the machining precision. The application strictly controls the precision and range of error compensation, and ensures that the compensated curved surface can meet the design requirements.

The invention discloses an attaching tool for explosion-proof glass processing, the attaching tool comprises a tool table, vertical lower supporting legs are fixedly arranged at the positions, close to four corners, of the bottom of the tool table respectively, a rectangular hole is formed in the middle of the tool table, and a glass fixing tool is arranged in the rectangular hole in an overturning mode; the glass fixing tool comprises an outer frame body arranged in the rectangular hole, the two side ends of the outer frame body are rotationally connected with the side walls of the tool table through connecting shafts correspondingly, and a first motor used for driving the outer frame body to rotate is fixedly arranged outside the tool table; two clamping blocks are oppositely arranged in the outer frame body in a sliding mode, and two pairs of first air cylinders used for driving the corresponding clamping blocks to move linearly are symmetrically and fixedly arranged on the outer side of the outer frame body. Through the integrated design, integrated operation from cleaning, attaching to overturning is achieved, and the processing efficiency, precision and safety of explosion-proof glass double-face film pasting are remarkably improved.

The utility model relates to the technical field of optical glass production, and discloses an optical glass annealing device which comprises an annealing furnace main body, guide rails are fixedly mounted on the left inner wall and the right inner wall of the annealing furnace main body, a supporting plate is slidably mounted on the outer surfaces of the two guide rails, and two first round rods are fixedly mounted on the inner wall of the supporting plate; the auxiliary adjusting mechanism is arranged on the supporting plate and comprises a first adjusting plate and two second adjusting plates, the first adjusting plate is slidably mounted on the outer surfaces of the two first round rods, a first rectangular hole is formed in the upper surface of the first adjusting plate, and a second round rod is fixedly mounted on the inner wall of the first rectangular hole; by moving the adjusting rod and the two first adjusting plates, the corresponding second adjusting plates and the placing table are driven to move, so that the position of the optical glass on the placing table is adjusted, a worker can conveniently adjust the distance of the optical glass, and the annealing efficiency of the annealing device on the optical glass is improved.

The utility model discloses a cleaning tool for a square micro cylindrical lens. The cleaning tool comprises a cylindrical lens frame, an integrated screen plate frame and a screen frame which are sequentially connected face to face. A plurality of uniformly distributed screen plate holes are formed in the placement area of the cylindrical lens frame and are used for allowing the square micro cylindrical lenses to pass through, the screen plate holes are rectangular holes, and avoiding parts are arranged at the corners of the rectangular holes and are used for avoiding the edges of the square cylindrical lenses; a plurality of drainage parts in one-to-one correspondence with the screen plate holes in position are arranged on the integrated screen plate frame and used for supporting the bottom surfaces of the square micro-cylindrical lenses, and during cleaning, the square micro-cylindrical lenses placed in the screen plate holes and the avoiding parts can allow liquid to smoothly flow from the surfaces of the square micro-cylindrical lenses and pass through the surfaces of the square micro-cylindrical lenses; and the situation that the square micro-cylindrical lens relatively slides and is scratched in the screen plate hole along with flowing of the cleaning liquid, so that the corners of the square micro-cylindrical lens collide with the inner wall of the screen plate hole, the corners are broken, and the machined square micro-cylindrical lens is scrapped is avoided.

The invention discloses a terahertz polarization multiplexing metasurface calculus filtering device and an image processing method and device, and relates to the technical field of calculus image processing. The calculus filter, namely the polarization multiplexing metasurface, is a structural unit array formed by micron-sized structural units through two-dimensional periodic continuation, each structural unit is composed of a metal film and a rectangular hole formed in the center of the metal film, and the two rectangular holes are the same in size and different in rotation angle. Furthermore, an image processing method and device based on the terahertz polarization multiplexing metasurface are designed, the polarization multiplexing metasurface is placed on a common focal plane of a 4f optical system, and a polarization-dependent coherent transfer function is applied to a spatial spectrum of an input image; therefore, differential and integral processing functions of the image are realized on the two cross-polarization channels at the same time. Experiments verify that a terahertz time-domain spectroscopy system is used, and prove that differential and integral characteristics of an input image can be kept at the same time, and differential and integral operations of the image are realized. Under the condition that a coherent light source is not needed, differential and integral processing of the image can be achieved in the terahertz frequency band, the performance is high, the structure is simple, and wide application prospects are achieved in the fields of terahertz image processing, optical simulation calculation and the like.

The waterproof and dustproof assembly comprises display bodies, one side of each display body is fixedly connected with an insertion plate, and when two adjacent display bodies are installed and spliced, the insertion plates move downwards to drive fixing blocks and limiting blocks to move downwards; when the fixed block and the limiting block move downwards, the inclined face of the left end of the connecting rod is extruded, so that the connecting rod is driven to move in a connecting hole, the connecting rod moves to drive a rectangular plate and a movable plate to move, the rectangular plate moves to extrude a spring located in a rectangular hole, and the spring shrinks due to extrusion; and when the limiting blocks move into the limiting grooves, the rectangular grooves correspond to the connecting rods, and at the moment, springs reset to generate thrust to enable the two connecting rods to be inserted into the two rectangular grooves correspondingly, so that the inserting plate is limited, the two ends of the inserting plate are limited, and the fixing effect is improved.

The utility model discloses a glass hypersensitization device based on interactive spraying, which relates to the technical field of glass processing, and comprises a fixed base, the top of the fixed base is fixedly connected with a processing bin, the outer wall of one side of the processing bin is provided with a plurality of rectangular holes, and the interiors of the plurality of rectangular holes are fixedly connected with driving motors. According to the interactive spraying-based glass hypersensitization device disclosed by the utility model, the change of hypersensitization environment humidity can be monitored through the humidity monitor, the humidity monitor transmits a signal to the controller through the connecting line, and the angle of the nozzle can be adjusted through the controller, so that interactive spraying is realized; by adjusting the nozzle, the reagent can be more uniformly sprayed on the surface of the glass, the consistency of the sensitization effect of the surface of the glass is improved, the influence of excessive or insufficient local sensitization on subsequent coating or other treatment effects is avoided, and meanwhile, the spraying module can simultaneously perform single-side super sensitization on the two pieces of glass, so that the technical effect of improving the processing efficiency is achieved.

This invention belongs to the field of optical thin film measurement, and specifically discloses a device and method for measuring the parameters of deep trench structures based on near-infrared spectral scattering. It includes an illumination optical path and a measurement optical path, wherein: the illumination optical path is used for auxiliary illumination to locate the position of the sample to be measured; the measurement optical path is used to acquire the reflected light intensity spectrum of the sample to be measured; wherein, the beam emitted by the infrared light source passes sequentially through a first condenser lens, a circular aperture, a first beam splitter, a polarizer, a rectangular aperture, and a second condenser lens before illuminating the structure to be measured; the beam returning from the structure to be measured returns along the same path to the first beam splitter, and then sequentially passes through a second beam splitter, a third condenser lens, a reflecting mirror, and a fourth condenser lens before converging onto a spectrometer; the circular aperture and the second condenser lens cooperate to control the incident angle of the measurement optical path, and the rectangular aperture is used to control the azimuth angle of the measurement optical path. This invention can achieve accurate measurement of the structural parameters of deep trench samples at the micrometer level.

The utility model relates to a quality control device for a laser lamp above a helical fault radiotherapy system. The quality control device comprises a main die body and an auxiliary die body, the auxiliary die body comprises a bottom plate and a stand column; the main mold body comprises an upper transverse plate, a vertical plate, a lower transverse plate, an extension plate and a side plate, a first rectangular hole penetrates through the upper transverse plate, a first scale mark is arranged on the upper transverse plate, a second rectangular hole penetrates through the lower transverse plate, a second scale mark is arranged on the lower transverse plate, a clamping block is arranged on the upper transverse plate, and a connecting rope is connected to the bottom of the clamping block; the connecting rope sequentially penetrates through the first rectangular hole and the second rectangular hole and then is connected with a lead weight, a circular hole is formed in the upper end of the vertical plate and fixed to the stand column through a first bolt, an arc-shaped hole is formed in the lower end of the vertical plate and connected with the stand column through a second bolt, and a side bolt is installed on the side plate. According to the utility model, the vertical calibration of the laser line is guided according to the gravity of the lead weight, the operation is simple and convenient, and meanwhile, the uncertainty caused by previous complicated quality control equipment is also greatly avoided.