111 results about "Blue laser light" patented technology

The invention provides fluorescent conversion type red fluorescent powder for display as well as a preparation method and application thereof, and belongs to the technical field of light-emitting display materials. Metal Sr, metal Al and metal Eu are mixed and smelted according to the stoichiometric ratio and then ground to prepare alloy powder, lithium aluminum hydride powder and the alloy powder are ground, mixed, calcined and ground again, and the red fluorescent powder for laser display with high brightness under blue light excitation is prepared. According to the invention, an alloying method is combined with a nitriding method, and the molar ratio (greater than 70%) of Eu < 2 + > (radiative transition) in all Eu elements in the prepared fluorescent powder product is greatly increased, so that the prepared red fluorescent powder has high color purity, high luminous efficiency and thermal stability, and meanwhile, a sample has an ultrahigh saturation threshold value under the excitation of blue laser; the material can be applied to a fluorescence conversion type laser display technology, and has huge potential for laser display devices.

The invention provides europium-doped silicate green fluorescent powder as well as a preparation method and application thereof, and belongs to the technical field of luminescent materials. The green fluorescent powder can generate narrow-spectrum green light with the peak value located at 532 nm under excitation of 450 nm blue light, the full width at half maximum is 46 nm, a white light LED device prepared based on the fluorescent powder has a 110% NTSC color gamut, and it is indicated that the green fluorescent powder has excellent application value in backlight display. The saturation threshold value of the fluorescent powder reaches 21.6 W / mm < 2 > under the excitation of 450nm blue laser, and the lumen at the moment reaches 1157.9 lm. The green fluorescent powder disclosed by the invention has the advantages of high luminous efficiency, narrow full width at half maximum, high light saturation threshold under blue laser excitation, high lumen efficiency and the like, and has application feasibility in the aspect of laser display.

The invention relates to the technical field of hybrid bonding, in particular to a laser-assisted hybrid bonding interconnection method, which comprises the following steps of: S1, processing the surface of a wafer to enable the to-be-bonded surface of the wafer to be flat; s2, cleaning a to-be-bonded surface of the wafer, and removing organic pollutants and an oxide layer; s3, aligning and fitting the surfaces to be bonded of the two wafers; s4, enabling the to-be-bonded surfaces to comprise dielectric layers and metal interconnection points, irradiating the dielectric layers with infrared laser, and carrying out the interconnection of the dielectric layers of the two to-be-bonded surfaces; and S5, the metal interconnection points are heated by blue laser, and the metal interconnection points of the two surfaces to be bonded are interconnected. In the hybrid bonding stage, the infrared laser and the blue laser are used for bonding the dielectric layer and the metal interconnection point respectively, partitioned irradiation and differentiated heating of the metal interconnection point and the dielectric layer are achieved, the problems of interface warping, microcracks and other thermal damage are effectively avoided, and the interconnection quality and the packaging reliability are improved.

The invention provides a high-power blue-light solid laser for urinary surgery, which comprises a pumping source, a pumping cavity, an annular water cooling structure, a titanium-doped sapphire slice crystal, an end mirror, a diamond crystal, a focusing system, a frequency doubling crystal, a coupling system and an optical fiber, the pumping cavity is used for reflecting 532nm pumping laser so as to focus the 532nm pumping laser on the titanium-doped sapphire slice crystal; the titanium-doped sapphire slice crystal generates 803nm laser based on 532nm pumping laser; the diamond crystal enables 803nm laser to form 900nm laser through Raman frequency shift; the focusing system is used for focusing the 900nm laser into the frequency doubling crystal so as to convert the 900nm laser into 450nm blue laser through nonlinear frequency conversion; the coupling system couples the 450nm blue laser into the optical fiber to form a stable high-power 450nm blue laser light source which can be applied to urinary surgery. The blue light laser is simple in structure, the problems that an existing blue light laser is low in output power and poor in light beam quality are solved, and operation safety and efficiency are improved.

The invention provides a light generating system (1000) comprising (i) a plurality of light sources (110,120, . . .), (ii) a first luminescent material (210), and (iii) a second luminescent material (220), wherein: (a) a first light source (110) is configured to generate first light source light (111) having one or more wavelengths in the blue wavelength range and having a first centroid wavelength (λC1), wherein the first light source (110) is a laser; (b) the first luminescent material (210) is configured to convert at least part of the first light source light (111) into first luminescent material light (211) having one or more wavelengths in the green and / or yellow wavelength range; (c) a second light source (120) is configured to generate second light source light (121) having one or more wavelengths in the yellow and / or orange wavelength range and having a second centroid wavelength (λC2), wherein λC2>λC1; wherein the second light source (120) is a superluminescent diode; (d) the second luminescent material (220) is configured to convert at least part of the second light source light (121) into second luminescent material light (221) having one or more wavelengths in the orange and / or red wavelength range; and (e) in an operational mode the light generating system (1000) is configured to generate system light (1001) comprising the first luminescent material light (211) and the second luminescent material light (221).

The utility model discloses a cutter wear detector which is characterized in that the cutter wear detector comprises a shell, and the shell is provided with a blue laser emitting port and a blue laser receiving port; a blue laser transmitter, a blue laser receiver, a detector control unit and a built-in battery are arranged in the shell, and a blue laser diode is arranged in the blue laser transmitter; and the detector control unit is connected with the blue laser transmitter and the blue laser receiver. The beneficial effects of the utility model lie in that the detection dimension precision and the detection speed are improved, the time cost is reduced, and the product quality is improved; the tool wear detection efficiency is improved, meanwhile, the labor cost is reduced, and product scrapping and collision caused by manual tool setting errors are avoided.

A visible light laser system and operation for welding materials together. A blue laser system that forms essentially perfect welds for copper based materials. A blue laser system and operation for welding conductive elements, and in particular thin conductive elements, together for use in energy storage devices, such as battery packs.

The invention provides an illumination system and projection equipment. The lighting system comprises a light source module, a wavelength conversion device, a first light guide assembly, a second light guide assembly and a micro-lens array module. The light source module is used for providing a plurality of green and blue laser beams. The wavelength conversion device is used for generating fluorescent light beams. The first light guiding assembly and the second light guiding assembly are used for guiding a fluorescent light beam and a green laser light beam respectively. The fluorescent light beams form fluorescent light spots on the first area of the first side face of the micro-lens array module. The plurality of green laser beams form a plurality of green light spots on a second area of the first side surface of the micro-lens array module. The first region is adjacent to the second region. The illumination system and the projection equipment provided by the invention avoid energy loss and have good light uniformity.

An all-epitaxial, electrically injected surface-emitting green laser operates in a range of about 520-560 nanometers (nm). At 523 nm, for example, the device exhibits a threshold current density of approximately 0.4 kilo-amperes per square centimeter (kA / cm2), which is over one order of magnitude lower than that of previously reported blue laser diodes.

The invention discloses a laser light source-based baffle-free integrated automobile headlamp optical system, which comprises a low-beam laser light source, a high-beam laser light source, a low-beam focusing reflector, a high-beam reflection cup and a high-beam and low-beam light distribution lens, the high-beam and low-beam laser light source comprises a blue laser diode, a laser collimating lens, a laser focusing reflector and a curved reflector embedded with yellow fluorescent powder, and the low-beam focusing reflector and the high-beam reflection cup are used for reflecting light to the lower half portion and the upper half portion of the high-beam and low-beam light distribution lens respectively. The high-beam and low-beam light distribution lens is a double-free-form-surface lens of a segmented structure, the upper half portion of the lens is a two-section symmetrical fan-shaped lens and used for high-beam illumination, and the lower half portion of the lens is a four-section fan-shaped lens and used for low-beam illumination. According to the baffle-free dual-light integrated structural design, the weight of the headlamp can be effectively reduced, the size is reduced, and the system stability is improved.

Disclosed are a projection screen, a manufacturing method therefor, and a projection system. The projection screen includes a diffusion layer, Fresnel structure layer with a plurality of Fresnel structures that are sequentially arranged, on a side of the diffusion layer, and a wavelength selection based reflection layer, covering at least part of a surface of the Fresnel structure of the Fresnel structure layer. A reflectivity for projection light emitted from a projection device by the wavelength selection based reflection layer is higher than a reflectivity for light of other wavelength bands by the wavelength selection based reflection layer. The projection light includes red laser light, green laser light, and blue laser light.

The present invention discloses an integrated optical chip for augmented reality display and a preparation method thereof, belonging to the field of optoelectronics and display technology. The integrated optical chip includes a first end face coupler, a second end face coupler, and a third end face coupler, and the first end face coupler, the second end face coupler, and the third end face coupler are sequentially provided with a 2×2 multimode interference coupler, a microring filter, a 1×2 multimode interference coupler, an interlayer coupler, a thin-film lithium niobate phase shifter, a phase shifter control electrode, and a grating antenna array structure; wherein, the first end face coupler is used to couple an external red laser into the chip, the second end face coupler is used to couple an external blue laser into the chip, and the third end face coupler is used to couple an external green laser into the chip. This technical solution is used to solve the problem that the display system in the prior art is difficult to simultaneously meet the requirements of lightness, low power consumption, and high resolution.

The invention may be embodied in other forms than those specifically disclosed herein without departing from itMulti-kW-class blue (400-495 nm) fiber-delivered lasers and module configurations. In embodiments, the lasers propagate laser beams having beam parameter products of <5 mm*mrad, which are used in materials processing, welding and pumping a Raman laser. In an embodiment the laser system is an integration of fiber-coupled modules, which are in turn made up of submodules. An embodiment has sub-modules having a plurality of lensed blue semiconductor gain chips with low reflectivity front facets. These are locked in wavelength with a wavelength spread of <1 nm by using volume Bragg gratings in an external cavity configuration. An embodiment has modules having of a plurality of submodules, which are combined through wavelength multiplexing with a bandwidth of <10 nm, followed by polarization beam combining. The output of each module is fiber-coupled into a low NA fiber. In an embodiment a kW-level blue laser system is realized by fiber bundling and combining multiple modules into a single output fiber.

A light engine (100) includes first and second laser devices (10, 11) that emit blue laser light. The first mirror device (12) partially reflects the blue laser light (51) emitted by the second laser device (11) as a first portion of the second blue laser light (53), and the phosphor element (13) receives the blue laser light (50) emitted by the first laser device (10) and receives the first portion of the second blue laser light (53). And converts at least a portion of the blue laser light (50) emitted by the first laser device (10) and a first portion of the second blue laser light (53) into (green yellow and / or red) converted light (55). The (green yellow and / or red) converted light (55) is collimated and combined with a second portion of the second blue laser light (52) emitted by the second laser device (11) that is not reflected by the first mirror device (12) to produce white engine light (58).

Provided is a bulging amount measurement device capable of measuring the bulging amount of a cast slab in a non-contact manner even in an environment in which a large amount of steam is generated at a high temperature.　The present invention pertains to a bulging amount measurement device for measuring the bulging amount of a cast slab cast by a continuous casting machine, the bulging amount measurement device comprising: a two-dimensional laser distance meter that is provided on both sides in a long side direction and / or a short side direction of a cast slab in which solidification has been completed, and measures the distance to the cast slab from a plurality of positions in the short side direction and / or the long side direction; and a calculation device that calculates the bulging amount on a short side and / or a long side of the cast slab by using the distance measured by the two-dimensional laser distance meter. The two-dimensional laser distance meter emits blue laser light having a wavelength of 360-480 nm onto the cast slab.

The invention discloses an integrated optical chip for augmented reality display and a preparation method thereof, and belongs to the technical field of optoelectronics and display. The integrated optical chip comprises a first end face coupler, a second end face coupler and a third end face coupler. 2 * 2 multi-mode interference couplers, micro-ring filters, 1 * 2 multi-mode interference couplers, interlayer couplers, film lithium niobate phase shifters, phase shifter control electrodes and grating antenna array structures are sequentially arranged behind the first end face coupler, the second end face coupler and the third end face coupler; wherein the first end face coupler is used for coupling external red laser into the chip, the second end face coupler is used for coupling external blue laser into the chip, and the third end face coupler is used for coupling external green laser into the chip. The technical scheme is used for solving the problem that a display system in the prior art is difficult to meet the requirements of lightness, thinness, low power consumption and high resolution at the same time.

To provide a light source device that can be reduced in size, and a projection apparatus including the light source device.SOLUTION: A light source device 60 comprises: a blue laser diode 71 that emits blue wavelength band light; a red light emitting diode 81 that emits red wavelength band light; a light path switching device 142 that is disposed on a light path of the blue wavelength band light emitted from the blue laser diode 71 and switches the incident blue wavelength band light between a light path in a first direction D1 and a light path in a second direction D2; a fluorescence emitting device 100 that is disposed on the light path in the second direction D2 and has a fluorescence emitting region that emits fluorescence including green wavelength band light using the blue wavelength band light as excitation light; and a light source optical system 140 that guides the blue wavelength band light switched to the light path in the first direction D1 by the light path switching device 142, the red wavelength band light emitted from the red light emitting diode 81, and the fluorescence emitted from the fluorescence emitting region to a combined light path.SELECTED DRAWING: Figure 3

The application discloses a laser, a laser light source and a laser projection device, and belongs to the projection display field.The laser comprises a substrate and a plurality of laser units arranged in an array on the substrate.In the application, the laser comprises two rows of laser units, one row of red light laser units for emitting red laser, and the other row of green light laser units for emitting green laser and blue light laser units for emitting blue laser.Under the premise of ensuring the brightness of the laser beam emitted by the laser, the number of laser units in the laser is reduced.Thus, the overall volume of the laser can be effectively reduced, and the volume of the laser projection device integrated with the laser is small.

The present application belongs to the field of laser projection, and in particular, relates to a laser light source device and a small laser projection device, wherein the laser light source device comprises a blue laser light source; a diffusion plate, arranged in front of the optical path of the blue laser light source, and used to change the light intensity distribution of the blue laser emitted by the blue laser light source; a dichroic mirror, arranged obliquely in front of the diffusion plate, and used to reflect the blue laser; a 1 / 4 wavelength plate, arranged in front of the optical path of S-polarized light, and used to convert the received blue laser into circularly polarized light; a lens assembly, arranged in the optical path of the circularly polarized light; a composite fluorescent wheel, comprising a substrate, wherein a plurality of blue light reflecting areas are arranged at intervals in the substrate, and yellow fluorescent powder areas are arranged between two adjacent blue light reflecting areas, and the circularly polarized light is converged onto the composite fluorescent wheel through the lens assembly; the composite fluorescent wheel generates yellow light or reflects blue laser, so that the yellow light and the blue laser share a set of optical components, which simplifies the composition of the optical path, reduces the size of the light source device, and reduces the cost.

The objective of the present invention is to provide: a beam combiner in which the intensity of blue laser light after coupling is sufficiently strong and a temperature rise is suppressed; and a beam combiner system including the beam combiner. A beam combiner (1) according to the present invention comprises a substrate (2) and an optical multilayer film (4) formed directly on a substrate surface (Q), which is the surface of the substrate (2). The optical multilayer film (4) has alternating low refractive index layers and high refractive index layers, transmits first laser light (L1) in the blue region of p-polarized light, and reflects polarization-converted laser light (LZ) in the blue region of s-polarized light. Each high refractive index layer of the optical multilayer film 4 is an HfO2 layer made of HfO2 and contains a monoclinic crystal. The (-111) plane of the monoclinic crystal is oriented in the direction perpendicular to the substrate surface (Q).

The invention discloses a fluorescent glass ceramic membrane with high color temperature uniformity and a preparation method and application thereof, and belongs to the technical field of laser illumination and display. A preparation method of a fluorescent glass ceramic membrane with high color temperature uniformity comprises the following steps: S1, uniformly mixing lithium disilicate glass powder, garnet fluorescent powder and an organic solvent to obtain slurry, and coating a substrate with the slurry to obtain an intermediate material; and S2, carrying out two-step heat treatment on the intermediate material to obtain the fluorescent glass ceramic membrane with high color temperature uniformity. The lithium disilicate glass forms an interlocking microcrystalline network structure in the fluorescent glass ceramic through two-step heat treatment by utilizing a nucleation crystallization mechanism of the lithium disilicate glass. The lithium disilicate glass with the microcrystalline interlocking network structure not only can ensure the compactness of a fluorescent glass ceramic film, but also can provide a scattering medium for blue laser, so that the scattering effect of the blue laser in a fluorescent conversion layer is remarkably improved, and the color temperature uniformity of white laser is further improved.

The invention discloses a spherical fluorescent ceramic material capable of uniformly emitting light. The spherical fluorescent ceramic material comprises spherical YAG-Al2O3 ceramic and Ce: YAG transparent ceramic coated on the outer layer. The spherical YAG-Al2O3 ceramic is used for scattering blue laser, and the Ce: YAG transparent ceramic is used for absorbing blue light to generate fluorescence conversion; and the two are combined together through vacuum sintering. The fluorescent material designed by the invention is uniform in spatial luminescence; secondary optical elements are not needed, the integration is high, and the method is suitable for industrialization.

The laser light combining device (100) of the present disclosure comprises a first input side optical waveguide (10), a second input side optical waveguide (11), and a third input side optical waveguide (12), each with one end located on the input side, an output side optical waveguide (13) with the other ends joined together, a red laser light source (20), a green laser light source (21), and a blue laser light source (22) respectively arranged on one end side of each input side optical waveguide (10, 11, 12), and a first surface-emitting laser (31) provided on the upper surface side of the first input side optical waveguide (10) and equipped with a photonic crystal that emits red laser light into the first input side optical waveguide (10).

After irradiation with the blue laser beam, intervals between the adjacent copper-based foils along the stacking direction in a neighborhood of a molten area generated in the stacked metal foils are smaller than the thickness of each of the copper-based foils.

The invention provides a light generating system (1000) comprising a first light generating device (1100), a second light generating device (1200), a luminescent material (200), one or more diffusers (710) and a control system (300); wherein the first light generating arrangement (1100) comprises a plurality of first light generating devices (110) configured to generate first device light (111); wherein the first light generating arrangement (1100) comprises a first laser set comprising the plurality of first light generating devices (110); wherein the first light generating device (110) comprises a first laser diode; and wherein the second light generating arrangement (1200) comprises a plurality of second light generating devices (120); wherein the plurality of second light generating devices (120) comprises (a) one or more primary second light generating devices (1210) configured to generate primary second device light (1211), and (b) one or more secondary second light generating devices (1220) configured to generate secondary second device light (1221); wherein the second light generating device (1200) comprises a second laser set comprising the plurality of second light generating devices (120); wherein the plurality of second light generating devices (120) comprises a primary second laser diode and a secondary second laser diode.

The invention provides an industrial augmented reality intelligent projection detection system and method based on multi-view blue-green double-color laser, and belongs to the technical field of laser projection. The system comprises a binocular camera, a galvanometer, a green laser and a blue laser. The galvanometer comprises an X mirror and a Y mirror. According to the invention, the blue laser and the green laser are fused, and closed-loop operation of laser projection indication and intelligent inspection and detection is realized.

The utility model belongs to the field of projection, and particularly relates to a mixed light source device and a projection device.The mixed light source device comprises a blue laser, a diffusion plate, a dichroic mirror, a 1 / 4 wavelength plate, a first lens assembly, a reflection diffusion plate and a wavelength conversion device; after passing through the 1 / 4 wavelength plate and the first lens assembly, the blue P polarized light is reflected by the reflection diffusion plate and then sequentially passes through the first lens assembly and the 1 / 4 wavelength plate to be converted into diffused second blue S polarized light, and the wavelength conversion device converts the first blue S polarized light into green light; the LED lamp further comprises a red LED light source and a color combination device. The red LED light source emits red light. And the color combining device transmits the green light and the second blue S polarized light reflected by the dichroic mirror, reflects the red light, converges the green light, the second blue S polarized light and the red light, and uniformly transmits the converged light out. According to the technical scheme, the cost of the mixed light source device is reduced, the size is reduced, and meanwhile high brightness is achieved.

The utility model discloses a double-color light source detection light path structure based on an electric reflector, when a dynamic dichroscope is located at a first working position, a blue laser beam is refracted to a fluorescent wheel through the dynamic dichroscope, and the blue laser beam is transmitted to a fluorescence excitation area of the fluorescent wheel to excite green fluorescence; the green fluorescence is reflected back to the dynamic dichroscope and then is reflected to the color filter wheel through the first electric reflector; the blue laser beam is reflected to the color filter wheel through the second electric reflector after being transmitted from the transmission area of the fluorescent wheel; when the dynamic dichroscope is located at a second working position, the blue laser beam is deflected by the dynamic dichroscope and then is reflected to the color filter wheel through the first electric reflector; the red laser beam is reflected to the color filter wheel through the second electric reflector; the light bar collects light beams transmitted by the color filter wheel. According to the utility model, the light path design under the double-color light source condition is simplified, the energy loss is reduced, and the dynamic adjustment capability of the light path structure can be improved.

The invention discloses a low-threshold adjustable micro white light laser based on a perovskite micron sheet and a preparation method of the low-threshold adjustable micro white light laser in the field of semiconductor lasers. The low-threshold adjustable micro white light laser based on the perovskite micron sheet comprises a gain medium, the gain medium is an Erx: CsPbyClaBrbIc micron sheet, x + y = 1, a + b + c = 3, and x, y, a, b and cgt; 0; the Erx: CsPbyClaBrbIc micron sheet is of a Cl, Br and I halogen phase separation structure induced by Er < 3 + >, a stable three-phase pinning energy band is formed, and red laser, green laser and blue laser can be emitted at the same time. According to the low-threshold adjustable micro white light laser based on the perovskite micron sheet and the preparation method thereof, fine adjustment of chromaticity and color temperature can be achieved by adjusting halide composition, and the low-threshold adjustable micro white light laser has the advantages of being simple in preparation process, excellent in performance and high in stability.

A laser welding method for stacked metal foils comprising a plurality of stacked copper-based foils, comprising the steps of: vertically stacking the plurality of copper-based foils; arranging the stacked metal foils on a workpiece holder in a blue laser welding system; and irradiating the stacked metal foils with a blue laser beam directed in a prescribed direction. After irradiation with the blue laser beam, a lower end surface of a molten region generated in the stacked metal foils does not curve toward a center side of the molten region in a cross-section of the stacked metal foils along a stacking direction of the copper-based foils.