384 results about "Laser illumination" patented technology

The invention discloses an indoor water tank sediment starting speed measurement system and method, and aims to solve the technical problem that data accuracy is affected due to the fact that a sensor disturbs a flow field in an existing measurement method. The core of the technical scheme is that the non-contact measurement characteristic of the PIV technology is applied to the whole process from flow field construction to data acquisition. The device is mainly composed of an imaging unit, a laser lighting unit, a movable sliding frame, a water flow adjusting unit and a buffer plate. Optical measurement is carried out through the imaging unit and the laser illumination unit, a physical sensor does not need to be arranged in a flow field, and interference of a measuring instrument on a water flow structure and a sediment starting process is fundamentally avoided. The movable sliding frame which is integrally designed integrates the functions of sediment laying, particle throwing and measuring, so that a test area can be quickly positioned; and the buffer plate and the water inlet and drainage adjusting unit are combined, so that a gradually-changed flow field from weak to strong can be accurately and stably simulated.

A measurement and positioning system based on machine vision and laser triangulation, which includes a machine vision system, a laser ranging system, and a standard positioning target configured to be installed on a positioned workpiece, where the laser ranging system is configured to project laser light onto the standard positioning target so as to perform a three-dimensional height measurement, and the machine vision system is configured to capture and image a positioning target and a laser image projected on the standard positioning target and to measure a two-dimensional coordinate position. The measurement system of the present application can realize a rapid three-dimensional measurement and precise positioning of a spatial position of the positioned object by means of the standard positioning target installed on the positioned object.

The invention relates to a related light measuring device based on a bevel mirror and a control method, and solves the problem that the existing three-dimensional detection technology is insufficient in comprehensive adaptability and cannot meet the requirements of precision detection for stability, precision and data collaboration, and the related light measuring device comprises a laser emission head, a double-bevel mirror, a light path receiving module, a zoom camera and a circuit processing unit. The first bevel mirror is provided with a through hole for laser to directly irradiate a target; the light path receiving module receives and reflects the laser-to-electric signal; the second bevel mirror reflects the target and the light spot light to the camera to obtain visual information; and the circuit processing unit controls all the components, integrates laser and visual information, and realizes three-dimensional detection of the target. The method has the following effects: through the light path collaborative design of the double-bevel mirror, precise and synchronous acquisition of laser ranging signals and visual contour / light spot information is realized, so that high-precision three-dimensional detection of the distance, the flatness and the segment difference of a target object is efficiently completed.

The invention discloses a laser illumination ceramic phosphor with adjustable emergent light spots and a preparation method of the laser illumination ceramic phosphor. The ceramic phosphor comprises a light conversion layer and a light scattering layer covering one surface of the light conversion layer. Wherein the light scattering layer is composed of a porous silicon dioxide sublayer and a compact silicon dioxide sublayer, and the porosity of the porous silicon dioxide sublayer is larger than that of the compact silicon dioxide sublayer. The invention has the following beneficial effects: on the premise that the luminous efficiency of the fluorescent material is not reduced, the problem of non-uniform distribution of light spot color and brightness of light emitted by a laser illumination product is effectively improved, and uniform white light emission is obtained.

Various embodiments of a laser illumination system are disclosed. In some examples, a system includes one or more lasers and a beam combiner configured to direct a combined light beam along a path. The system can include a polychroic optical assembly that receives the combined light beam and to output a first beam of the first light of the first wavelength and a second beam of the second light of the second wavelength. The second beam can be offset from the first beam. The polychroic optical assembly can be a prism assembly. The system can include one or more optical elements configured alter a distribution of light of the first beam to output a first output line at a sample plane, and to alter a distribution of light of the second beam to output a second output line at the sample plane.

The application discloses an indoor water tank sediment starting speed measurement system and method, and aims at solving the technical problem of sensor disturbance to a flow field and influence on data accuracy in the prior art measurement method.The technical scheme core is that the non-contact measurement characteristics of the PIV technology are applied to the whole process from flow field construction to data acquisition.The device is mainly composed of an imaging unit, a laser illumination unit, a movable sliding frame, a water flow adjusting unit and a buffer plate.Optical measurement is performed through the imaging unit and the laser illumination unit, and physical sensors do not need to be arranged in the flow field, so that the interference of the measuring instrument on the water flow structure and the sediment starting process is fundamentally avoided.The integrated movable sliding frame integrates the sediment laying, particle throwing and measurement functions, and is convenient for quickly positioning a test area;in combination with the buffer plate and the water inlet and drainage adjusting unit, a gradually changing flow field from weak to strong can be accurately and stably simulated.

The invention discloses high-efficiency fluorescence conversion glass based on nitride red fluorescent powder composite binary germanium-phosphorus glass and a preparation method thereof, the high-efficiency fluorescence conversion glass is successfully prepared by taking binary germanium-phosphorus glass with specific components as a substrate and red nitride fluorescent powder as a luminescent material through low-temperature rapid sintering by a spark plasma sintering (SPS) technology. The fluorescent glass comprises the following raw materials: nitride red fluorescent powder and precursor glass powder, the precursor glass powder is prepared from the following raw materials in percentage by mole: 26 to 48 mol percent of GeO2 and 52 to 74 mol percent of P2O5, and the mass of the nitride red fluorescent powder is 1 to 7 percent of the mass of the total powder. Through a specific preparation process, the high-efficiency luminescence property, excellent thermal stability and high laser irradiation threshold value of the fluorescent glass are realized, and the high-performance requirement of laser illumination is met. Meanwhile, the preparation method is simple in preparation process, green, environment-friendly and low in production cost, and has a wide application prospect.

A laser beam expanding lighting device comprises an incident laser adjusting module, an adjustable base module and a beam expanding lens set module, a parallel light beam injection port and a plane mirror are installed in the incident laser adjusting module, and after collimation, a laser mirror is transmitted to a beam expanding lens set after being reflected by the two adjustable plane mirrors; the beam expanding lens group realizes the adjustment of the beam expanding angle and the beam expanding multiple by combining different beam expanding lenses and adjusting the distance between the beam expanding lenses; the beam expanding lens set is installed on the adjustable base, the adjustable base achieves deviation of the axis of the beam expanding lens set in two directions relative to the axis of laser through an ejector pin-spring linkage mechanism, the irradiation position of the laser on the beam expanding lens is changed, and adjustment of a laser illumination area is achieved while beam expanding is conducted. The parallel light beam injection port and the beam expanding lens group of the device can be arranged in a non-coaxial mode, the application range is wide, the overall structure is compact, operation is convenient, and various adjusting adaptability is achieved.

The invention relates to the endoscope technology, and discloses a lighting system of a medical endoscope. Comprising a white light source, a light guide rod, a first collimating lens, a second collimating lens, a first dichroscope, a first focusing lens, a second focusing lens, an optical filter, a first laser source, a first beam expanding lens, a third collimating lens, a second dichroscope, a second laser source, a second beam expanding lens and a fourth collimating lens. The first collimating lens, the second collimating lens, the third collimating lens, the fourth collimating lens, the first focusing lens, the second focusing lens, the first beam expanding lens and the second beam expanding lens are all spherical lenses. The invention further discloses a medical endoscope. The white light and the two different lasers are correspondingly transmitted and reflected respectively, so that the illumination system of the medical endoscope meeting the illumination of the white light and the two lasers can be prepared by using a spherical lens, and the manufacturing cost is reduced.

The embodiment of the invention provides a laser illumination module and projection equipment. The laser illumination module comprises a light source, a static diffusion sheet, a light combining assembly, a first light uniformizing assembly, a second light uniformizing assembly, a phase delay sheet and a relay part. The light source is used for providing laser beams; the static diffusion sheet is used for carrying out diffusion and speckle elimination on the laser beam; the light combining assembly is used for receiving the light rays emitted by the static diffusion sheet and combining the light rays; the first dodging assembly is used for receiving the combined light and performing primary dodging treatment; the second light uniformizing assembly is used for further uniformizing the light; the phase retarder is arranged on the light emitting side of the first dodging assembly or arranged in the second dodging assembly, and the size of the phase retarder is smaller than that of the laser spot, so that only one part of the laser beam can change the polarization state of the light through the phase retarder, and the other part of the laser beam is kept in the original polarization state to dissipate the spot; and the relay part is used for shaping the light after secondary dodging and reflecting the light to an imaging light path.

The present invention provides a laser illumination device for treating a peripheral artery occlusive disease, which comprises: a fixing frame, which includes a fixing member and a bracket, the fixing member is disposed on the top of the bracket, and the inner side of the fixing member is disposed with a plurality of a first laser diodes which are used to emit laser light with a wavelength between 620 and 700 nm, and a plurality of a second laser diodes which are used to emit laser light with a wavelength between 900 and 1100 nm; a power source, which is disposed on the fixing frame and is used to supply power to the plurality of laser diodes; and a tripod, which is disposed at the bottom of the bracket to support the fixing frame.

The invention discloses an active oxygen activated near-infrared region photo-thermal reagent and a preparation method and application thereof.The near-infrared region photo-thermal reagent with active oxygen response is constructed by means of etherification reaction of phenolic hydroxyl functionalized aza-BODIPY dye and p-bromophenylboronic acid pinacol ester and further prepared into nanoparticles, and the near-infrared region photo-thermal reagent with the active oxygen response function is prepared into the active oxygen activated near-infrared region photo-thermal reagent. After the nano particle reacts with active oxygen, the photo-thermal efficiency of the nano particle is remarkably improved under 808nm laser illumination, and the nano particle has an excellent photo-thermal imaging effect and a photo-thermal treatment function.

The invention discloses a fluorescent cone embedded hexagonal array composite structure fluorescent ceramic as well as a preparation method and application thereof. According to the composite structure fluorescent ceramic, ceramic with the component being T serves as a base body, cone fluorescent ceramic units which are arranged in order are constructed in the base body through the combination of the gel technology and the photocuring 3D printing technology, and finally the fluorescent cone embedded hexagonal array composite structure fluorescent ceramic is formed. The problem of light spot expansion of the fluorescent ceramic is effectively solved by accurately regulating and controlling the matching relationship between the size of the conical bottom surface and the incident laser light spot and utilizing the synergistic effect generated by the optical characteristic difference between the ceramic matrix and the fluorescent ceramic. In addition, a three-dimensional efficient heat conduction network is formed between the ceramic matrix and the fluorescent ceramic, and heat accumulated under excitation of high-power-density laser can be quickly dissipated. The composite structure fluorescent ceramic with the fluorescent cone embedded into the hexagonal array can realize high-collimation, high-efficiency and high-brightness luminescence, and can be widely applied to the fields of laser illumination and display after being packaged with a laser excitation source.

The invention discloses signal transmitting equipment, an illumination communication multiplexing system based on semiconductor laser and a communication method. The signal transmitting equipment comprises a signal modulation module, a driving processing module and an illumination module which are connected in sequence, the signal modulation module converts the acquired target information into a modulation signal; the driving processing module drives the illumination module to generate visible communication laser based on the modulation signal; the visible communication laser comprises laser, the lighting module comprises a shell and a semiconductor laser, the shell comprises a side part and a bottom part, the semiconductor laser is arranged on the inner wall of the side part, and the shell reflects part of laser emitted by the semiconductor laser to the signal receiving equipment. By adopting the semiconductor laser, high-brightness visible communication laser containing a modulation signal can be projected, and communication illumination multiplexing is realized; and the semiconductor laser is arranged on the inner wall of the side part of the shell, so that the shell and the laser can be better integrated, integrated arrangement is achieved, and the overall size is reduced.

The utility model belongs to the technical field of art knives, and particularly relates to an art knife which comprises an art knife body, a knife folding groove and an inserting groove are formed in the art knife body, the inserting groove is connected with an inserting strip arranged on a laser lighting pen in an inserting mode, a fixing plate, a clamping block and a spanner are arranged on the art knife body, a plate tip is arranged on the fixing plate, and the clamping block is arranged on the plate tip. The multifunctional art knife comprises an art knife body, a wrench is arranged on the art knife body, a wrench opening is formed in the wrench, a telescopic measuring ruler is arranged in the art knife body, scale marks are arranged on the outer wall of the art knife body and the outer wall of the telescopic measuring ruler, and a sliding block and a pulling block are arranged on the telescopic measuring ruler. And the functions of illumination, measurement, knife folding and the like are also realized, so that the practicability and the convenience in carrying and using can be enhanced.

The laser lighting module comprises a laser diode, a first collimating lens, a multi-face reflector, a fluorescent powder piece, a second collimating lens and a reflector array which are sequentially arranged along a light path, a plurality of reflecting faces are arranged on the side, corresponding to the fluorescent powder piece, of the multi-face reflector, and a light through hole is formed in the middle of the multi-face reflector. A laser beam emitted by the laser diode sequentially passes through the first collimating lens and the light through hole and then is projected to the fluorescent powder piece, and light excited by the fluorescent powder piece is reflected by the multi-face reflector, sequentially passes through the second collimating lens and the reflector array and then is emitted. Through the arrangement of the reflective fluorescent powder sheet and the multi-surface reflector comprising a plurality of reflecting surfaces, when a laser beam is projected onto the fluorescent powder sheet, generated white light is converged on the second collimating lens after being reflected by the plurality of reflecting surfaces, and is emitted to the reflector array to be projected out after being collimated by the second collimating lens; by adopting the reflective fluorescent powder sheet, the power of the laser diode can be improved, and the brightness and the spatial distribution uniformity of emergent light are improved.

Laser lighting is used to capture high resolution images of a moving train as the train passes through a portal. On the respective sides, top and bottom of the portal a plurality of cameras are mounted to capture the images of the train. In certain applications a de-speckler is added to refine the light to its most functional use.

The invention relates to the technical field of field plant cultivation devices, in particular to a laser light supplementing device for field crop growth regulation and control. Comprising a power supply module, a control circuit module, a laser lighting module and a supporting column. The solar power generation panel, the energy storage unit and the laser transmitter are electrically connected with the control circuit module; the laser lighting module is fixed to the top of the supporting column. The solar power generation panel charges the energy storage unit through photoelectric conversion; the laser lighting module comprises a laser transmitter, a free-form surface lens array, a light-transmitting panel and a cover body, the free-form surface lens array covers the outer side of the transmitting end of the laser transmitter, and the light-transmitting panel is connected to the outer side of the free-form surface lens array in a sleeving mode. The upper part of the light-transmitting panel is hermetically connected with the cover body; a laser beam emitted by the laser emitter is transmitted and shaped through the free-form surface lens array, and a rectangular laser beam is emitted from the light-transmitting panel. The device has the advantages that the energy uniformity of light beams is improved, the energy consumption is reduced, and the irradiation distance is long.

The embodiment of the invention provides a laser illumination module, an optical projection system and intelligent head-mounted equipment. The laser illumination module comprises a first lens group, a fly eye lens, a second lens group, a reflector, an internal total reflection prism and a DMD chip. The first lens group comprises at least one of a first lens and a second lens and a diffusion sheet; the fly-eye lens is located on the light emitting side of the first lens group; the second lens group comprises a third lens and a fourth lens; the reflecting mirror is positioned on a light path between the third lens and the fourth lens; the internal total reflection prism is positioned on the light emitting side of the fourth lens; the DMD chip and the internal total reflection prism are arranged adjacently; the fourth lens can move along the optical axis of the fourth lens so as to change the interval between the fourth lens and the third lens and the interval between the fourth lens and the internal total reflection prism, and therefore zooming is achieved. And the DMD chip receives the zoomed illumination light, so that the laser illumination module can be matched with DMD chips with different sizes.

The system includes a laser light source configured to emit laser light; an optical fiber coupled to the laser light source and configured to guide the laser light along an illumination path; and an illumination optical assembly disposed in the illumination path and configured to direct the laser light on a workpiece. The workpiece emits fluorescent light along an emission path based on illumination from the laser light. The system further includes a collection optical assembly disposed in the emission path and configured to separate the fluorescent light from reflected laser light; and a detector disposed in the emission path and configured to generate one or more fluorescence images based on the fluorescent light.

The invention discloses a light source device and laser lighting equipment. The light source device comprises a laser module, a collimation module and a guide module. The collimation module is arranged on a light path where the first light beam and the second light beam generated by the laser module are located and used for generating a first collimated light beam and a second collimated light beam, and the included angle between the second collimated light beam and the first collimated light beam is larger than 0 degree. The guiding module is arranged on the light path where at least one of the first collimated light beam and the second collimated light beam is located and used for changing the propagation direction of the collimated light beams entering the guiding module so that the first collimated light beam and the second collimated light beam can be propagated in the same direction. Due to the existence of the guiding module, the two collimated light beams can be almost parallel to each other or coincide with each other, two light spots corresponding to the two collimated light beams can be smoothly combined into one light spot, and the light source device can be smoothly applied to laser lighting equipment.

The Freestanding-Bilayer Microscope (FBM) utilizes scanned focused laser illumination that achieves precise illumination of fluorescent probes at a freestanding lipid bilayer formed in an experimental chamber positioned on the imaging platform of the FBM.

This invention discloses an all-weather reconnaissance and alarm device, comprising a laser illumination component, an ICCD / ICMOS gating component, and an integrated processor. The laser illumination component uses high peak power pulsed laser light for illumination assistance, enhancing target brightness. The ICCD / ICMOS gating component is used to achieve high-gain photoelectric conversion of weak optical signals. Specifically, the ICCD / ICMOS gating component eliminates or reduces the influence of sunlight through "ultrafast adaptive imaging + light decay," enabling the component to operate in the linear region with the optimal signal-to-noise ratio for the target. Simultaneously, the ICCD / ICMOS gating component integrates a high-speed CCD / CMOS image sensor. Without changing the delay time, a higher image intensifier repetition frequency results in a smaller increase in delay time. Through ultra-high-speed image acquisition, it fully utilizes the energy of each laser pulse, enabling imaging of targets at different distances and high-speed moving targets. The integrated processing component focuses on controlling the ultrafast adaptive adjustment duration, the interval between auxiliary illumination and gating opening, and high-precision gain control.

The application discloses an optical device, a laser lighting device and a vehicle, and belongs to the technical field of lasers, and comprises a fluorescent powder sheet, a reflector and a lens; the fluorescent powder sheet, the reflector and the lens are coaxially arranged along a transmission direction of a laser beam; a side of the lens facing the fluorescent powder sheet is provided with a groove, the reflector is arranged at the bottom of the groove, and the fluorescent powder sheet is arranged at a notch position of the groove; the direction of a light-receiving surface of the fluorescent powder sheet and the direction of a light-reflecting surface of the reflector are opposite to the transmission direction of the laser beam; the fluorescent powder sheet is used for emitting excited light under irradiation of the laser beam; the reflector is used for reflecting the laser beam or the excited light through the light-reflecting surface; and the lens is used for changing the direction of the excited light to form a high-beam lighting spot or a low-beam lighting spot. When the fluorescent powder sheet is broken or falls off, the laser beam is directly irradiated on the light-reflecting surface of the reflector, direct irradiation of the laser beam out of the lens to cause harm to human eyes can be avoided, and the use safety of the optical device is improved.

The application relates to the technical field of laser lighting, in particular to a non-electric manual laser switch and a using method thereof, and aims to solve the problems of poor explosion-proof performance, high laser leakage risk, large coupling loss and stray light interference of an existing laser switch. The switch is connected in series between a light fiber at a light emitting end of a laser and a light fiber at a receiving end of a lighting system, and comprises a manual operating mechanism, a double-lens assembly, a high-precision positioning pin, a light cone assembly, a stray light protection piece and a shell. The switch realizes light path on-off through pure mechanical manual operation. When the switch is turned on, the double lens is accurately aligned through the positioning pin, and laser is coupled and transmitted with low loss. When the switch is turned off, the light cone absorbs laser on the laser side, and the stray light protection piece blocks external stray light. The switch does not have any electrical components, meets the Exd IIC T6 explosion-proof grade, has a coupling loss of less than or equal to 0.2 dB, has laser leakage of less than or equal to 0.01 mW when turned off, is suitable for environments of-40 DEG C to 85 DEG C, and is suitable for explosion-proof scenes such as natural gas pipe corridors and chemical industrial parks. The switch is convenient to operate and has a long service life.

The invention discloses a transmission-type laser lighting system with high front light efficiency. The transmission-type laser lighting system comprises a light shaping element, a Ce: LuAG ceramic rod, silica gel, a connecting element, a tail fiber laser and a radiator, the Ce: LuAG ceramic rod is connected with the light shaping element through silica gel, the tail fiber laser is connected with the light shaping element through the connecting element, and the radiator is located at the bottom of the tail fiber laser. The illumination system designed by the invention is high in blue light resistance power; the light source is high in luminous efficiency and high in integration level; the process is simple and suitable for industrialization.

Disclosed is a system and method for solid-state 2D optical phased arrays (OPAs), which are fabricated from InGaN / AlGaN multiple quantum wells (MQWs) and AlyGa1-yN / AlxGa1-xN (y<x) MQWs. The InGaN / AlGaN MQWs and AlyGa1-yN / AlxGa1-xN (y<x) MQWs include alternating p-type and n-type layers to form p-n-p-n MQW structures to allow the OPA to operate in the reversed biased configuration to further minimize the operating current and heat generation. The phase in each pixel within the OPA will be controlled independently via electro-optic effect in III-nitride MQWs by varying the voltage in each pixel by a Si CMOS array to achieve the manipulation of the distribution of optical power in the far field and steering of the main laser beam. The present disclosure is applicable to a wide range of applications, including the operation of LIDAR systems, laser weapons, laser illuminators, and laser imaging systems.

The defect inspection device (100) includes: an excitation unit (1); a laser illuminator (2); an interference unit (30); a imaging unit (31); a holding member (4) that holds the imaging unit so as to be able to be disposed at a position separated from an inspection object (90) by a predetermined distance; a connection member (5) that connects the holding member or the imaging unit to the excitation unit; and a control unit (6) that generates an image (61) of the propagation of elastic waves with respect to the inspection object.

The invention relates to a small semiconductor laser and a packaging method thereof, and belongs to the technical field of semiconductor lasers. The laser comprises a shell, a PCB, a COS unit and a heat sink base, the heat sink base is an L-shaped base, the PCB and the COS unit are arranged on the upper side of the heat sink base, the PCB is connected with the COS unit, and the shell is arranged on the outer side of the heat sink base. According to the invention, the application requirements of small-space and high-reliability laser illumination detection are met.