28results about How to "Good collimation" patented technology

The invention provides an in-situ mechanical detection rack, device and method for a synchrotron radiation light source. The in-situ mechanical detection rack comprises an output power part, a transmission part, a sensing part, a heat dissipation part and a supporting part. The in-situ mechanical detection device comprises an in-situ mechanical detection rack, a controller and terminal control software. The ball screw which is integrally ground and formed in a left-and-right rotating mode has extremely high collimation degree and precision, rigid fixation is applied to the two ends of each stage of worm and gear transmission shaft, and the situation that the screw connected with a worm gear deforms due to shearing force provided by a worm is avoided. The heat dissipation system for the motor avoids the problems of sensor temperature excursion, unstable working condition of the motor, thermal expansion of a sample and the like caused by heat accumulation of the rack. Due to the sitting type layout, the stable base, the holes in the specific positions and the small instrument size, the device can be perfectly matched with the experiment conditions of a synchrotron radiation laboratory. The in-situ mechanical detection rack and the in-situ mechanical detection device can be directly used for carrying out synchrotron radiation in-situ mechanical detection operation.

Collimating superlenses and their design methods, and collimation systems based on collimating superlenses, are disclosed. The collimation system includes a VCSEL array and a collimating superlens array. The VCSEL array comprises several VCSEL units; the collimating superlens array comprises several collimating superlenses, which are arranged in a one-to-one correspondence with the VCSEL units to collimate the emitted beams of the VCSEL units. The collimating superlenses are composed of amorphous silicon cylinders of different radii, the radius of each amorphous silicon cylinder being determined according to the position and phase of each position of the collimating superlens, so that the amorphous silicon cylinders of different radii are arranged according to the position and phase distribution of the collimating superlenses. By employing a collimating superlens design method with a specific phase distribution, the limitations of traditional curvature radius processing are overcome. The arrangement of amorphous silicon cylinders with specific radius dimensions replaces the curved surface distribution of traditional optical convex lenses, and collimation performance is improved based on high-precision micro / nano fabrication technology.

The embodiment of the invention provides a laser collimation device and a processing system. The laser collimation device comprises a shielding assembly and a diaphragm. The shielding assembly is provided with an incident port, an emergent port and a collimation channel extending in the first direction, the incident port and the emergent port are formed in the two opposite ends of the collimation channel and communicate with the collimation channel, and a light path passing through the collimation channel is formed between the incident port and the emergent port. At least one of the incident port and the emergent port is provided with a diaphragm, the diaphragm is provided with a light through hole for laser to pass through, and the light through hole is communicated with the collimation channel. The laser collimation device provided by the embodiment of the invention is good in collimation effect.

The invention provides a manufacturing method of a resonant cavity light-emitting diode, which comprises the following steps of: performing epitaxial manufacturing on a first type semiconductor layer in a window with a smaller area, so that the crystal quality is improved, and the reliability of a device is improved; an active layer, a second-type semiconductor layer and a first reflecting layer are sequentially manufactured in an epitaxial mode and inversely arranged on the bearing substrate, the area of the first-type semiconductor layer is gradually reduced in the direction away from the bearing substrate, a second reflecting layer is manufactured on the inclined wall of the first-type semiconductor layer, and the first reflecting layer and the second reflecting layer form a resonant cavity; light is reflected for multiple times in the resonant cavity, so that the light resonance effect is improved, the light has a narrower wavelength peak, and the spectral purity is improved; the upper surface, far away from the bearing substrate, of the first type semiconductor layer is a light outlet, the area of the light outlet is the smallest, and the directivity and collimation of light emitting can be improved.

The utility model relates to a DMD (Digital Micromirror Device) spectrum modulation collimation light source. A concave reflection grating 2 is arranged at the rear part of a wide spectrum light source 1, a DMD array reflector 3 is arranged at the top of the concave reflection grating 2, a focusing lens 4 is arranged at the rear part of the DMD array reflector 3, a light homogenizing rod 5 is arranged at the rear part of the focusing lens 4, and a collimation lens 6 is arranged at the rear part of the light homogenizing rod 5. According to the utility model, the concave grating is used for light splitting, the DMD array reflector is used for modulation, and any modulation spectrum light source can be realized. According to the utility model, dodging is carried out through the dodging rod, and the output uniformity of a light source is higher and is superior to 95%. According to the collimating lens, a light source with high collimation is obtained through projection, and the divergence angle of the light source is smaller than + / -1 degree. The system is simple in structure and high in lighting effect.

The present invention relates to the field of laser technology, and discloses a high-power dual-output external cavity narrow linewidth laser that is easy to mass produce, including a heat sink, a positioning groove is provided on the front of the heat sink, a laser chip is fixedly installed on the left end of the front of the heat sink, the front of the heat sink is fixedly connected with a positioning frame located at the top and bottom of the positioning groove, the interior of the positioning frame is fixedly connected with a self-focusing lens located inside the positioning groove, and the front of the heat sink is fixedly connected with a limit plate located on the right side of the positioning frame. The high-power dual-output external cavity narrow linewidth laser that is easy to mass produce greatly optimizes the collimation adjustment of the output light of the laser chip and the feedback light direction adjustment of the laser. In the design of the external cavity optical path, there is no secondary focusing process after collimation. Therefore, in the overall optical path, all optical elements do not need to withstand excessively high energy density, which will not cause heating and deformation, and the optical path supports high optical power output.

The present invention discloses a device and method for measuring the position resolution of a drift tube detector. The device comprises: a beta radiation source and a plastic scintillator fixed on the same bracket, a drift tube detector is arranged between the beta radiation source and the plastic scintillator, a row of collimation holes are drilled on the collimator of the beta radiation source and a slit S is arranged, and a slit D is arranged in front of the plastic scintillator, wherein the positions of the beta radiation source, the drift tube detector and the plastic scintillator are positioned by laser collimation, and a radiation source shield is arranged outside the beta radiation source. The present invention uses beta rays to measure the position resolution of the drift tube detector, improves the collimation of the rays by setting the collimation holes and the slits, fixes the ray emission, the collimator and the receiver on the same stand, ensures the positioning accuracy, optimizes the electronic circuit parameters, improves the time accuracy, and obtains the corresponding position resolution by measuring the dispersion of the drift time.

The utility model discloses a Si packaging substrate with a light reflection structure and a light absorption structure, comprising a silicon-based substrate, the end face of which is provided with a plurality of grooves in an array manner, and the longitudinal section of each groove is V-shaped; the LED chip is positioned on the bottom surface of the groove through conductive solder, the light-emitting surface of the LED chip faces outwards, and the light conversion layer covers the light-emitting surface; the reflecting layer is arranged on the wedge-shaped side face of the groove and extends to the end face of the silicon-based substrate, and a passivation layer is arranged on the surface of the reflecting layer and / or between the surface of the reflecting layer and the end face of the silicon-based substrate; and the light absorption enclosing wall is arranged on the passivation layer on the outer side of the top of the groove and is of a continuous strip-shaped structure. The array micro light source can solve the problems of poor light utilization rate, poor light collimation performance and poor light crosstalk prevention performance when the existing array micro light source is used.

The present invention discloses a connection device for an optical fiber bundle and a spectrometer, and relates to the field of spectral technology. The key points of the technical solution are: comprising a connector and a collimation system arranged in the connector and used to convert the light emitted by the optical fiber bundle into parallel light, wherein a light propagation channel is provided in the connector, and the two ends of the connector located at the light propagation channel are respectively set as an optical fiber bundle connection end and a spectrometer connection end, the optical fiber bundle connection end is connected to the optical fiber bundle output end, the spectrometer connection end is connected to the incident end of the spectrometer, and the collimation system is arranged on the light propagation channel between the spectrometer connection end and the optical fiber bundle output end. The present invention can facilitate the spectrometer to receive the light of the optical fiber bundle, and there is no need to strictly align the spectrometer with the optical fiber bundle, and there is no need to strictly process the incident slit of the spectrometer, which has the effect of improving the convenience of operation and use.

The present application provides a laser radar transmitting system, which belongs to the field of optical technology. The laser radar transmitting system includes a first lens, a second lens and a light source; wherein the first lens includes a plurality of arrays of sub-lenses; the light source includes a plurality of arrays of sub-light sources; the first lens and the second lens are coaxial and are sequentially arranged on the light-emitting side of the light source; the sub-super lens and the sub-light source are in a mapping relationship. The laser radar transmitting system reduces the number of lenses of the laser radar transmitting system by using the first lens and the second lens formed by the sub-lens array, thereby reducing the total system length and working distance of the laser radar transmitting system, and promoting the miniaturization and lightweight of the laser radar transmitting system.

The application discloses a kind of laser speckle suppression device and method, belong to optical technology field, by laser light source, collimating lens, half-transmission half-reflection mirror, light splitting film layer array, detector is formed, laser light source output coherent laser;Collimating lens is collimated after laser beam, again by half-transmission half-reflection mirror vertical injection light splitting film layer array;Light splitting film layer array will incident beam be divided into multiple non-coherent and light intensity equal sub-beam.The present application is static speckle suppression device, does not need power supply and drive, device structure is compact, small in size, low energy consumption, long service life;This device structure is simple, and the effect of speckle suppression is good, can be divided into N beam light intensity equal non-coherent light for laser beam, at most the speckle contrast of laser is reduced to 1 / N of original 1 / 2 .

The invention discloses a metasurface integrated Micro-LED structure with light beam shaping and light extraction enhancing functions, the structure comprises a Micro-LED chip and a single-layer metasurface structure directly integrated on the light emitting surface of the Micro-LED chip, and the metasurface is composed of a plurality of sub-wavelength nano units arranged in a two-dimensional array. Wherein the sizes and the space periods of the nano units are cooperatively designed according to the light-emitting center wavelength of the Micro-LED, the distance from a light-emitting layer in the chip to a light-emitting surface and a preset deflection angle of a light beam, so that phase delay values introduced by the units jointly form a composite two-dimensional phase distribution. According to the phase distribution, firstly, divergent spherical wavefront is reconstructed into collimated wavefront by compensating an optical path difference so as to enhance light extraction, and secondly, a linear phase gradient is superposed so that an optical axis of a whole outgoing beam generates a preset deflection angle. According to the invention, the functions of a complex optical system are integrated on a chip layer, and the integration of efficient collimation, directional emission and light extraction enhancement of light beams is realized.

The invention provides a display device. The display device comprises a substrate, a driving device layer, a light emitting device and a lens assembly. The driving device layer is arranged on the substrate, the light-emitting device comprises a bonding metal layer, a light-emitting layer and a transparent conductive layer, the bonding metal layer is arranged on the driving device layer, the light-emitting layer is arranged on the bonding metal layer, and the transparent conductive layer is arranged on the light-emitting layer. The lens assembly comprises an inner-layer lens and an outer-layer lens, the inner-layer lens is arranged on the corresponding light-emitting device, the inner-layer lens is made of silicon nitride, the outer-layer lens is made of silicon dioxide, the outer-layer lens is arranged on the periphery of the inner-layer lens, and the refractive index of the inner-layer lens is larger than that of the outer-layer lens. According to the display device, through the double-layer lens structure, the light extraction efficiency is improved under the condition that the total height of the lens is not increased.

This invention provides a desktop small-angle X-ray scattering device, including a base plate. Two sets of translation tracks are fixedly connected to the top surface of the base plate. A detector assembly and a sample stage assembly are respectively installed at both ends of the translation track surface. A radiation assembly is installed on the top surface of the base plate at one end of the translation track. The radiation assembly includes a light source support. A light source support is fixedly connected to the top surface of the base plate at one end of the translation track. A light source is fixedly connected to the upper part of one side of the light source support. A connecting plate is fixedly connected to the middle of one side of the light source. A light source hole is provided in the middle of one side of the connecting plate. A filter unit is fixedly connected inside the light source hole. A collimator is fixedly connected to one side of the connecting plate. This invention enables small-angle experimental testing through the cooperation of the translation tracks, detector assembly, sample stage assembly, and radiation assembly.

The utility model belongs to the technical field of high-energy particle acceleration, and relates to an ion beam generation system based on interaction of laser and a disc target, which comprises a laser source, a modulation target and a vacuum target chamber, the modulation target is a disc-shaped solid target and is arranged in the vacuum target chamber; the laser source is arranged outside the vacuum target chamber and serves as an input end, and laser generated by the laser source is emitted into the modulation target, interacts with the modulation target and then is emitted out to generate an ion beam; the laser source is used for generating circularly polarized femtosecond Laguerre-Gaussian laser; the femtosecond Laguerre-Gaussian laser has hollow transverse field distribution and longitudinal field distribution with the field intensity larger than 1022 W / cm < 2 >. According to the invention, the energy conversion efficiency from laser to ions can be improved, the collimation and the monoenergy of the ion beam are improved, and the maximum cut-off energy and the peak energy of the ions are improved.

The utility model relates to the technical field of vehicle illumination detection, and discloses an automobile dipped headlight downward inclination angle measuring device, which comprises a base, a measuring unit is arranged on the base, the measuring unit comprises a laser emitting module and an image acquisition module, the laser emitting module emits laser and forms a reference light spot, and the image acquisition module acquires the reference light spot. The image acquisition module acquires the reference light spot and the test light spot and forms image data, and the algorithm module can receive the image data sent by the image acquisition module and analyze and calculate the inclination angle. Interference factors such as asthenopia and subjective cognitive differences of manual observation are eliminated, and objectivity and accuracy of measurement results are remarkably improved. And the environmental adaptability and practicability of the device are improved. The equipment maintenance time and labor cost are reduced, and the economic burden of an enterprise is relieved.

The utility model discloses an infrared collimating lens, which comprises a lens cone, an internal component arranged in the lens cone, and a first locking piece and a second locking piece which are respectively arranged at two ends of the internal component and fix the internal component in the lens cone, the internal assembly sequentially comprises a first lens, a first spacer, a second lens, a third lens, a second spacer and a fourth lens from the object side to the image side along the optical axis. According to the utility model, one of the four lenses is a plastic lens, so that the cost, the total length and the weight can be reduced as much as possible while the collimation effect is ensured. Specifically, the aspheric plastic lens is adopted to realize correction of various aberrations of light, light emitted by a laser radar is collimated into parallel light, an infrared light collimation effect is better realized, and through reasonable distribution of focal power and surface types of each lens, the collimation capability of the lens is effectively improved, and the infrared collimation lens with high reliability and low cost is obtained.

The invention discloses a tunable narrow-linewidth diamond Raman laser and an emission method, and relates to the field of all-solid-state visible light lasers, the tunable narrow-linewidth diamond Raman laser comprises a coupling lens group, pumping sources and a V-shaped cavity, the pumping sources and the V-shaped cavity are respectively arranged at two sides of the coupling lens group, and a second plane concave lens is arranged at the top end of the V-shaped cavity; an F-P etalon, a laser crystal and a first plano-concave lens are sequentially arranged on the left side of the second plano-concave lens in the opening direction of the V-shaped cavity, a dichroscope, a Raman frequency doubling module and a low-pass filter are sequentially arranged below the second plano-concave lens in the opening direction of the V-shaped cavity, and the Raman frequency doubling module comprises a diamond crystal, an LBO frequency doubling crystal and a third plano-concave lens. The diamond crystal is arranged on the side close to the dichroscope, the third plane-concave lens is arranged on the side close to the low-pass filter, wavelength tuning in a wide range is achieved through tiny angle adjustment, meanwhile, the line width is compressed to achieve tuning of narrow-line-width visible light output, and the stability and reliability of the system are improved.

The utility model provides a motor front and rear flange positioning device, which comprises a slide rail, a bearing, a stud, a track, a support column, a cushion block, a base, a nut and a laser pen, the cushion block is assembled at the upper end of the base, one end of the support column is assembled on the cushion block, the other end of the support column is assembled with the slide rail, a bearing column of the bearing is fixed on the track by rivet welding, the bearing is assembled on the bearing column, and the laser pen is arranged on the nut. The laser pen is fixed at one end of the rail through rivet welding, the rail is integrally assembled in a fixed slideway of the sliding rail, and the stud is assembled in a positioning hole of the sliding rail and the rail and fixed through the nut. The front and rear square flanges of the motor base are installed and welded, marking is accurate, visual and practical, stability is good, operation is easy to learn, the front and rear flanges are positioned more efficiently and rapidly, the front and rear flanges are prevented from being not parallel, working efficiency is improved, product quality is guaranteed, and therefore deformation of flange installing and welding is greatly reduced, machining precision of a motor is guaranteed, and product quality is improved. And the quality of the motor is improved.

The application relates to a 360-degree scanning laser radar optical system and a design method thereof, the system comprising a laser, a converging module, a MEMS mirror, a detector and a free-form surface lens, the free-form surface lens comprising a refractive surface, a first reflecting surface and a second reflecting surface; a light beam emitted by the laser is incident to the MEMS mirror through the converging module, and is reflected to the refractive surface through the MEMS mirror, the second reflecting surface and the first reflecting surface in sequence, and after being refracted through the refractive surface, the light beam forms a parallel light beam to be incident to a target object to be diffusely reflected, part of light rays in the diffusely reflected light rays return to the detector along the original path, the detector receives the light beam and obtains the position of the target object; the MEMS mirror rotates around the central axis of the free-form surface lens by 360 degrees to scan the target object by 360 degrees. The system adopts a solid free-form surface lens, is compact in size, has few optical system elements, is simple in structure, convenient to assemble and adjust and light in weight; the application has good collimation of an outgoing light beam and high radar resolution.

The present invention provides a display device capable of realizing in-screen fingerprint recognition, comprising: an LCD backlight module, including a light source and a diffusion function layer; a TFT substrate located above the LCD backlight module; a collimation layer located between the diffusion function layer and the TFT substrate; a TFT circuit layer disposed on the side of the TFT substrate away from the collimation layer, which has a first light-transmitting area and a non-light-transmitting area; the first light-transmitting area is used for allowing collimated light emitted by the light source and collimated by the collimation layer to pass through; a fingerprint photosensitive module is disposed on the non-light-transmitting area, which is used to receive and sense target signal light, and the target signal light is formed by the collimated light being reflected by the finger above the TFT circuit layer. The display device of the embodiment of the present invention can significantly reduce the manufacturing cost while realizing in-screen fingerprint recognition.

The invention discloses a small-size coaxial transmit-receive optical module, which is used for a laser radar, and comprises a transmitting light path assembly, a beam combination light path coupling assembly and a receiving light path assembly, beam combination is carried out by using a polarization state, and a light path of the transmitting light path assembly can obtain a smaller emergent light spot, so that the receiving light path assembly has a larger receiving aperture equivalently; the system detection capability is improved; meanwhile, the beam combining module can further improve the integration level through gluing and integrated coating and is convenient to install; the receiving light path assembly adopts a U-shaped folding structure and a telecentric light path design, long-focus receiving can be realized under a relatively short physical size, an incident angle CRA of a main light ray is controlled in a relatively small range, inclined projection of a light spot on a photosensitive target surface of a detector is relatively small, response convergence is relatively good, and meanwhile, high integration level and high receiving efficiency are taken into consideration.

The invention discloses a structure of a high-brightness Micro LED chip, and belongs to the technical field of display lighting devices. A plurality of blue light emitting pixels are arranged on the surface of the driving circuit; the upper ends of the blue light emitting pixels are covered with fluorescence conversion glass, the structure can enable the fluorescence conversion layer to achieve remote packaging, the fluorescence conversion layer is farther away from a heating center, the heat effect is lower, the light conversion efficiency and reliability are improved, and the used fluorescence conversion glass can keep a larger physical scale. When the fluorescent conversion glass is applied to a Micro LED chip, the fluorescent conversion efficiency is higher than that of a fluorescent powder material of which the size is reduced, and the process difficulty and the cost can be reduced by applying the fluorescent conversion glass to the Micro LED chip compared with fluorescent powder and other materials. In addition, the invention further discloses a micro-nano optical structure, the micro-nano optical structure is selected from at least one of a reflective retaining wall, a micro-lens array diaphragm and a coarsened light-emitting surface, and the micro-nano optical structure can further improve the light-emitting efficiency and reduce the power consumption.

The present invention discloses a collimating cylindrical lens, which includes a first lens with positive optical power and a second lens with positive optical power in sequence from the object side to the image side along the optical axis, and the first lens and the second lens are both cylindrical lenses; wherein the on-axis distance from the object side of the first lens to the image side of the second lens is TD, the sum of the middle thickness of the first lens and the second lens is ∑CT, and the collimating cylindrical lens satisfies: 1.5<TD / ∑CT<2.0. The present invention enables a two-dimensional light source scanned along a certain angle on the image plane to be well collimated into parallel light and emitted on the object plane, solving the problem of the urgent need for a high-performance collimating cylindrical lens that can match a solid-state scanning laser radar; the lens adopts a non-spherical surface in the curvature direction to realize the correction of various aberrations of light and achieve the light collimation effect; at the same time, by reasonably allocating the optical power and surface shape of each lens, the collimation ability of the collimating cylindrical lens is effectively improved, and a high-reliability lens is obtained.

This invention discloses a method for detecting microcrack defects on a mirror surface. First, the height information of the surface being measured is pre-scanned and converted into corresponding angle information. Referring to the reflection characteristics of the mirror, a specially customized, angle-adjustable illumination system is used to project incident light at different angles. This light has high collimation and strong light-gathering ability, thereby enhancing the reflected light from the background area and suppressing the reflected light from the microcrack area. The light reflected from the surface enters a custom-designed imaging system, which can only receive reflected light within a certain fixed angle range. At this point, the light is filtered by the fixed light of the optical imaging system, which further increases the grayscale contrast between the microcrack defect features and the background, achieving a double effect of expanding the boundary of the micro-features, and achieving a microcrack defect detection accuracy of 1 / 5 to 1 / 10 of a pixel.

The application relates to a light source assembly and a projection device. The light source assembly comprises a mounting cup, a light emitting source, a collimating mirror group and a first light absorbing layer. The light emitting source is arranged in the mounting cup; the collimating mirror group is arranged on the mounting cup and is located on the light emitting side of the light emitting source, and the collimating mirror group covers the light emitting range of the light emitting source; and the first light absorbing layer is arranged on the inner wall of the mounting cup. In the light source assembly, the light emitted by the light emitting source does not need to be reflected and refracted by the inner wall of the mounting cup when conducting in the mounting cup, the introduction of interference light can be reduced, the problem of light path crosstalk can be solved, and the projection imaging quality is improved. Meanwhile, the first light absorbing layer arranged on the inner wall of the mounting cup can absorb the light shot on the inner wall of the mounting cup, the light reflected on the inner wall of the mounting cup to form interference light is avoided, and the introduction of interference light components is further reduced.

The invention provides a method for forming a semiconductor structure, and relates to the technical field of semiconductors. The forming method comprises the following steps: forming an initial semiconductor structure which comprises a plurality of channels; a laminated structure is formed in each channel, the laminated structure extends to the surface of the initial semiconductor structure, and the laminated structure comprises an insulating layer, an oxide layer and a sacrificial layer; protective gas and auxiliary gas are introduced into the channels and react, so that a protective layer is formed on the surface of the sacrificial layer in a conformal mode, the protective gas comprises silicon ions, and the auxiliary gas comprises oxygen ions; and etching the laminated structure with the protective layer, removing a part of the laminated structure at the bottom of the channel and removing the laminated structure on the surface of the functional layer so as to expose the surfaces of the substrate and the functional layer. According to the invention, the protection layers are formed on the film layers in the channel of the etching device, so that the integrity of the morphology of the etched film layers and the etching contour is ensured, and a good structural basis is provided for the subsequent technological process of the device.

The utility model provides a deformation monitoring device, which belongs to the technical field of deformation monitoring and specifically comprises a target plate, a camera and a computer, the target plate is fixed on a monitored object, a target spot and a mark graph are arranged on the target plate, the camera is installed in front of the target plate at a preset distance, a lens of the camera is aligned with the target plate, the camera is used for collecting image information of the target plate, and the camera is electrically connected with the computer for communication; wherein the mark graph is used for identifying information of the target board, the information of the target board comprises the size and the number of the target board, and the mark graph is a geometric graph. According to the processing scheme, the use convenience and the monitoring precision of the deformation monitoring device are improved.