42 results about "Red laser light" patented technology

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 invention discloses projection equipment, and belongs to the technical field of projection. The projection equipment comprises a laser light source, an LED light source, a light combining mirror group, a light machine device and a projection lens. After the projection equipment is applied in the vehicle, the color of the first kind of laser emitted by the laser light source is red laser, so that the light emitting power of the light emitting unit used for emitting the first kind of laser in the laser light source is low and the efficiency of the first kind of laser emitted by the laser light source is low under the condition that the temperature of the environment where the projection equipment is located is high. The color of the LED light emitted by the LED light source in the projection device is the same as the color of the first type of laser emitted by the laser light source, and the light emitting power of the LED light source is less affected by the environment temperature. Therefore, by arranging the LED light source, the first type of laser emitted by the laser light source can be compensated.

The invention discloses a fluorescence immunodetection analyzer and a detection analysis method thereof. The analyzer comprises a sheath flow pool which is vertically arranged, red and green laser excitation light sources which are horizontally arranged on the two sides of the sheath flow pool in the X-axis direction, and double independent light paths which are arranged on the two sides of the sheath flow pool in the Y-axis direction. A red laser light path separates fluorescence into three paths of signals of 730nm, 670nm and residual fluorescence through a series-connected dichotomy mirror group; the green laser light path collects diffuse reflection light. The four paths of optical signals are converted into voltage signals by four detectors, temperature compensation units integrated in the detectors correct the signals in real time based on a pre-calibrated dark current-temperature relation curve, and temperature drift is suppressed. And the signal processing system calls a pre-established signal model library to carry out comprehensive calibration and synchronous analysis on multi-channel signals, so that accurate distinguishing and counting of different fluorescent microspheres are realized. According to the invention, the problems of large temperature influence and low detection efficiency in the prior art are solved, and the stability, accuracy and multi-channel consistency of detection are remarkably improved.

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.

A light emitting device (1) comprising: an element (2) comprising a bulk low scattering material, the element comprising opposite first and second light incoupling surfaces (21, 22) and a circumferential surface (23) extending between the first and second light incoupling surfaces; at least one red laser diode (3) configured to emit red laser light (31) and arranged at one of the light incoupling surfaces such that the red laser light is coupled into the element through said one of the first and second light incoupling surfaces; a collimator (4) arranged and configured to collimate the red laser light (31); at least one LED (5) configured to emit LED light, the LED being arranged at one of the light incoupling surfaces such that the LED light is coupled into the element through said incoupling surface, and the scattering material being configured to make the path of the laser light visible.

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).

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.

Disclosed are a green laser phase rangefinder and a ranging method, which relate to the field of laser ranging. The rangefinder includes a direct digital synthesizer (DDS), a frequency mixing filter circuit, a microcontroller unit (MCU), a first amplifier circuit, an analog switch, a first laser beam module, a second laser beam module, a second amplifier circuit, an avalanche photodiode, a third amplifier circuit and band pass filter circuit, an analog-to-digital converter (ADC) module, a receiving lens, and a high-voltage circuit. A green laser diode is arranged in the first laser beam module; and a red laser diode is arranged in the second laser beam module. In the present disclosure, the green laser diode and the red laser diode are combined to implement ranging. The present disclosure features low power consumption, low costs, and high measurement accuracy.

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.

This invention discloses a slag volumetric flow rate measuring device and method. The slag volumetric flow rate measuring device includes: a binocular camera, with one camera on each side of the center of the slag discharge direction, and the two cameras arranged front and back in the slag discharge direction; a green laser source for emitting green laser lines; a red laser source for emitting red laser lines; one of the red and green laser lines is parallel to the slag discharge direction, and the other is perpendicular to the slag discharge direction; each camera of the binocular camera acquires a slag discharge image simultaneously displaying both green and red laser lines. This invention's measuring device uses two lasers (red and green) and a binocular camera. The cross-sectional area of ​​the slag on the conveyor belt is calculated using the R-channel image, and the displacement is calculated by cross-correlation using the matching results of two consecutive frames of the G-channel image. The conveyor belt speed is calculated by combining the sampling time, and the cross-sectional area and speed are coupled to achieve online detection of slag volumetric flow rate.

The present invention provides a phosphor wheel, light source device, and projector that can improve light utilization efficiency and reduce laser speckle. [Solution] A phosphor wheel 23 having phosphor regions 23r and 23g that convert the wavelength of blue laser light, and which rotates in response to the drive of a rotation mechanism, comprising a red phosphor region 23r that converts blue laser light to red laser light, a green phosphor region 23g that converts blue laser light to green laser light, and a transparent region 23b that transmits blue laser light, the transparent region 23b transmitting blue laser light through a microlens array.

The present application discloses a laser projection device, comprising: a blue laser, a red laser, a green laser, a laser driving circuit corresponding to each color laser, a light modulation device, a display panel and a signal shaping circuit; the display panel is configured to generate a modulation driving signal for driving the light modulation device and generate a driving signal for driving each color laser to emit light, the driving signal including an initial image enable signal and an initial current control signal; the signal shaping circuit is connected to the display panel and is disposed in the path where both or any one of the initial image enable signal and the initial current control signal is transmitted to at least one color laser, and is configured to output a shaping signal; the shaping signal is superimposed on the above two signals or any one of them to form a target driving signal; the laser driving circuit is configured to receive the target driving signal and directly drive the corresponding color laser to emit light or go out, and the target driving signal is a high-frequency periodic driving signal. When the above laser projection device performs projection display, the speckle phenomenon can be weakened or suppressed.

A projection light source (100) and a projection apparatus. The projection light source (100) comprises a three-color laser light source (101); a red LED light source (102); a blue laser light source (103); a phosphor plate (104) arranged on a light-emitting side of the blue laser light source (103) and used for converting blue laser light into green fluorescence; and a compound-eye module (105) arranged on light-emitting sides of the three-color laser light source (101), the red LED light source (102) and the phosphor plate (104), the compound-eye module (105) being used for homogenizing red laser light, blue laser light, green laser light, red light and green fluorescence and then transmitting same.

The present invention provides an intelligent video monitoring and alarm device for a mining excavator, which relates to the field of coal mine machinery safety. The intelligent video monitoring and alarm device for a mining excavator, the transparent plate and the upper part of the first installation cavity form a dust accumulation groove, the inner bottom of the first installation cavity is provided with a group of linearly arranged spotlights, the bottom of the movable plate is provided with a group of linearly arranged light intensity sensors on the side close to the first installation cavity, a plurality of visual sensors are linearly arranged at the inner L-shaped long side of the mounting frame, a red light laser head is provided at the inner L-shaped short side of the mounting frame, and the visual sensors correspond one by one to one on one side of the collection groove. Dust produces the Tyndall effect under the irradiation of the red laser of the red light laser head, and the light intensity sensor senses the light intensity emitted by the spotlight. Through the dual monitoring of light intensity and collected video, the central control personnel can remotely determine the amount of dust deposited in the corner of the machine body.

The application discloses a laser light source device and a projection device, comprising: a laser emitting three primary color lasers and a light combining prism located on the light emitting side of the laser. The light combining prism comprises a light combining surface and a plurality of connecting surfaces. Red laser, blue laser and green laser emitted by the laser are incident to the light combining surface of the light combining prism. The red laser is directly reflected by the light combining surface, while the blue laser and the green laser are incident to the inside of the light combining prism through the light combining surface, repeatedly reflected in the inside of the light combining prism, the optical path of the blue laser and the green laser is increased, and finally emitted at the position of the red laser incidence. Therefore, not only the three color lasers are combined, but also the difference between the divergence degree of the blue laser and the green laser after the optical path is increased and the divergence degree of the red laser is reduced, so that the difference between the combined light spot sizes of the three color lasers is reduced, and the uniformity of the combined light spot is improved.

To suppress decrease in light flux value of display light when performing derating of a laser diode as a light source in a projector.SOLUTION: A projector has a light source part 62, a light source drive part 50, and a display control device 42 including a control part 44. The control part performs normal control mode for adjusting each light output so as to satisfy white balance when a temperature of a red laser diode can be suppressed to an allowable temperature or less, and when the temperature cannot be suppressed to the allowable temperature or less, performs derating for the red laser diode, and increases drive current value of green and blue laser diodes or a green laser diode and increases light output so as to suppress decrease in light flux value of display light due to decrease in light output of the red laser diode, thereby performing light flux maintenance control mode that prioritizes maintenance of the light flux value of the display light over maintenance of white balance.SELECTED DRAWING: Figure 2

The invention discloses a laser projection device and a wearable device. The laser projection device comprises a laser display assembly; a light combining assembly; the laser display assembly comprises three groups of microcavity laser arrays, each group of microcavity laser array comprises a plurality of laser units, and the laser units in the three groups of microcavity laser arrays have a corresponding relation. The three groups of microcavity laser arrays are respectively used for generating a green laser image, a blue laser image and a red laser image; the light combining assembly is used for combining laser beams emitted by the laser units with corresponding relations to one pixel point, so that the green laser image, the blue laser image and the red laser image are combined into a target laser image; the controller is electrically connected with the laser display assembly, and the controller is used for receiving the driving signal and controlling the display parameter of each laser unit according to the driving signal; and the lens is arranged on the light emitting path of the light combining assembly, receives the target laser image emitted by the light combining assembly and emits a projection image.

A method and device for generating 260 nm wavelength low-noise all-solid-state ultraviolet laser, 808 nm laser pumps Nd:YVO4 crystal to generate 914 nm wavelength linearly polarized stimulated radiation fluorescence, the fluorescence is amplified and oscillated in the first laser oscillation cavity and realizes longitudinal mode compression by combining phase modulation longitudinal mode filter, generates 914 nm wavelength low-noise linearly polarized near-infrared laser, and is converted into 457 nm wavelength low-noise linearly polarized blue laser by intracavity frequency doubling; the 457 nm low-noise linearly polarized blue laser pumps Sm:YLF crystal in two directions to generate 605 nm wavelength linearly polarized orange-red stimulated radiation fluorescence, the fluorescence is amplified and oscillated in the second laser oscillation cavity and forms 605 nm wavelength low-noise linearly polarized orange-red laser after phase modulation filtering; the remaining 457 nm wavelength low-noise linearly polarized blue laser and the 605 nm wavelength low-noise linearly polarized orange-red laser of the pumped Sm:YLF crystal are nonlinearly frequency-converted by intracavity sum frequency, the polarization controller is used to optimize the polarization matching degree of the two lasers to improve the sum frequency efficiency, and 260 nm wavelength low-noise all-solid-state ultraviolet laser output is obtained.

The utility model discloses a lane indicator with laser display projection, which comprises a shell, a front traffic signal lamp panel and a rear traffic signal lamp panel, the front traffic signal lamp panel and the rear traffic signal lamp panel are respectively arranged on two sides of the shell, and the shell is provided with a power supply, a control card, a red laser projection lamp and a green laser projection lamp. The power supply, the front traffic signal lamp panel, the rear traffic signal lamp panel, the red laser projection lamp and the green laser projection lamp are all electrically connected with the control card; the projection end of the red laser projection lamp and the projection end of the green laser projection lamp are arranged downwards so that projection can be projected to a lane below the shell. The light source of the red laser projection lamp is a red laser diode, and the light source of the green laser projection lamp is a green laser diode. The monochromatic laser diode is used as a light source of the projection lamp, the light source utilization rate is improved, the size of a heat dissipation structure of the laser projection lamp is reduced, the projection lamp can be integrated in the lane indicator, the size of the indicator is reduced, and power consumption is reduced.

The present invention discloses a projection device and a projection system, comprising: at least one laser light source, including a plurality of red laser chips, a plurality of green laser chips, and a plurality of blue laser chips, wherein the number of green laser chips and the number of blue laser chips are both less than the number of red laser chips; at least one waveguide plate, wherein one waveguide plate is located on the light-emitting side of each green laser chip; the waveguide plate comprises a light input portion and a light output portion, wherein the light input portion is used to guide the incident laser into the waveguide plate, and the light output portion is used to output the conducted laser; and the width of the laser beam emitted by the light output portion is equal to the width of the laser beam emitted by the red laser chip, so that the spot size of the blue and green lasers in the emitted light is the same as the spot size of the red laser, thereby making the optical etendue of the blue and green lasers the same as the optical etendue of the red laser, and the three colors of laser light are evenly distributed after light combination.

A light source device includes: blue, green, and red laser light sources; a first retardation plate that controls polarization of blue laser light emitted from the blue laser light source; a polarizing beam splitter that separates the blue laser light whose polarization is controlled by the first retardation plate into a first blue laser light and a second laser light; a second retardation plate that controls polarization of the second blue laser light separated by the polarizing beam splitter; a fluorescent plate that is excited by the first blue laser light separated by the polarizing beam splitter and emits fluorescent light including a green component and a red component; a first dichroic mirror that combines the second blue laser light whose polarization is controlled by the second retardation plate and light emitted from the green and red laser light sources, to generate combined laser light; a dynamic diffuser plate that diffuses the combined laser light combined by the first dichroic mirror to generate diffused laser light; and a second dichroic mirror that combines the diffused laser light diffused by the dynamic diffuser plate and the fluorescent light emitted from the fluorescent plate.

The present invention discloses a dimming system for infrared laser lamps based on big data, comprising a power supply module, a camera module, an ambient light module, a controller, a data acquisition and analysis module, and a dimming module. The present invention eliminates the effects of strong light and device failures on the detection of ambient light data collected by uniformly arranging ambient light sensors in a circular pattern indoors and performing discrete judgments on the ambient light sensors. The system also records indoor image data, calculates the contrast corresponding to the grayscale difference between adjacent pixels in the image from the perspective of the image, and calculates the average value of the contrast to eliminate the effects of sudden strong light on the image. The dimming module dims the indoor ambient light using a red laser, and determines whether dimming is needed for a short period of time using a preset light intensity threshold, thereby extending the device lifespan and reducing system power consumption.

The present invention discloses a large color gamut laser light source system integrated by notch beam combining, comprising a blue laser light source Ⅰ1, an anti-green-transmitting blue beam combining mirror 2, a green laser light source 3, a blue excitation light source 5, an anti-red-transmitting blue-green beam combining mirror 6, a fluorescent unit 7, and a red laser light source 9; the light beam emitted by the blue laser light source Ⅰ1 sequentially passes through the anti-green-transmitting blue beam combining mirror 2, a light homogenizing plate Ⅰ4a, an anti-red-transmitting blue-green beam combining mirror 6, a red notch filter 10, and a lens group Ⅱ11, and is incident on a light guide 12; the light beam emitted by the green laser light source 3 sequentially passes through the anti-green-transmitting blue beam combining mirror (2), a light homogenizing plate Ⅰ4a, an anti-red-transmitting blue-green beam combining mirror 6, a red notch filter 10, and a lens group Ⅱ11, and is incident on a light guide 12. The coupling integration system of the RGB laser light source realizes a coupling mode of multiple light sources with high efficiency and ultra-small volume, which can meet the requirements of large color gamut Rec.2020, and at the same time has high cost performance and a wide range of operating temperature adaptability.

The present invention discloses a combined laser light source, which relates to the field of optical technology. The present invention specifically includes a housing, a three-primary-color laser and an aperture mirror. The three-primary-color laser and the aperture mirror are respectively fixed in the housing. The three-primary-color laser is used to generate a red laser beam, a green laser beam and a blue laser beam. The light-emitting ends of the red laser, the green laser and the blue laser are respectively provided with aperture mirrors. The reflection of the aperture mirrors makes the laser beams overlap. The overlap of the laser beams is used to form beams of different colors. The housing is provided with a light outlet, and the light beams reflected by the aperture mirror are transmitted from the light outlet. The present invention uses three-primary-color lasers to form three laser beams, and these three laser beams can form laser beams of other colors, which can meet the requirements of stage lights for various color beams. In addition, the scattering angle of the laser beam is small and not easy to diverge, and a clear and distinct light spot can be formed in the far field, which can be applied to venues of various sizes.

A light emitting device (1) comprising an element (2) comprising a volumetric low scattering material, the element comprising opposite first and second light incoupling surfaces (21, 22) and a circumferential surface (23) extending between the first and second light incoupling surfaces, at least one red laser diode (3) configured to emit red laser light (31), and being arranged at one of the light incoupling surfaces such that the red laser light is coupled into the element through the said one of the first and second light incoupling surfaces, a collimator (4) arranged and configured to collimate the red laser light (31), at least one LED (5) configured to emit LED light, the LED being arranged at one light incoupling surface, such that the LED light is coupled into the element through the said incoupling surface, and the scattering material being configured to make the path of laser light visible.

The application discloses a light source device and a projection system, which comprise a laser light source array, a dichroic mirror, a dynamic optical component, a fluorescent conversion component and a heat dissipation component. The fluorescent conversion component adopts a fixed fluorescent conversion component, which can greatly improve the system reliability, has no mechanical movement and can reduce the structure design size of the light source device. The fluorescent material is changed from the original annular area to a small square or circular area, which greatly reduces the use amount of the fluorescent material and reduces the material cost. In addition, the fixed fluorescent conversion component can be centrally cooled without the dynamic limitation of high-speed rotation. In the three primary colors emitted by the light source device, the red light is mixed light of red fluorescent light and red laser light, and the green light is mixed light of green fluorescent light and green laser light. Since the laser has a large color gamut, the color performance of the projection system can be improved.

The application provides a kind of intelligent pedestrian crossing device, it is related to traffic facilities field, including: electric control box and vertical support piece;Electric control box includes: LED screen, laser radar and laser diffuser;The inside of electric control box is provided with operation controller, and the upper half of the left side wall of electric control box is fixedly installed with laser radar and laser diffuser in an upper and lower interval;Two LED screens are symmetrically inlaid and installed on the front and rear side walls of the electric control box, and the display side of the two LED screens is covered with sealing glass;The laser radar, laser diffuser and two LED screens are electrically connected with the operation controller and carry out data transmission to form an obstacle scanning detection system, and the laser diffuser is used to diffuse red laser warning that there is an obstacle on the sidewalk.The diffusing range of red laser beam of laser diffuser is larger, which can cover most of the area of pedestrian crossing, compared with the prior art of simply using LED screen for warning, the warning range is larger, and the warning effect is better.

A laser projection device (100) and a wearable device. The laser projection device (100) comprises: a laser display assembly (10), wherein the laser display assembly (10) comprises three microcavity laser arrays (101, 101a, 101b, 101c), each microcavity laser array (101, 101a, 101b, 101c) comprises a plurality of laser units (103), there are correspondence relationships between the laser units (103) in the three microcavity laser arrays (101, 101a, 101b, 101c), and the three microcavity laser arrays (101, 101a, 101b, 101c) are respectively used for generating a green laser image, a blue laser image and a red laser image; a light combining assembly (20), the light combining assembly (20) being used for combining laser beams emitted by laser units (103) having a correspondence relationship to one pixel point, so as to combine the green laser image, the blue laser image and the red laser image into a target laser image; a controller, the controller being electrically connected to the laser display assembly (10), and the controller being used for receiving a driving signal and controlling a display parameter of each laser unit (103) on the basis of the driving signal; and a lens (30), the lens (30) being arranged on a light emitting path of the light combining assembly (20), and the lens (30) receiving the target laser image emitted from the light combining assembly (20) and emitting a projection image.

The utility model discloses adhesive tape coating equipment with a coating detection mechanism, which comprises a coating machine and two coating frames used for supporting the coating machine, a detection frame is fixedly arranged on one of the coating frames, an adhesive tape is arranged in the coating machine, a detection lamp bank is fixedly arranged on the inner side of the detection frame, and the detection lamp bank is fixedly arranged on the inner side of the detection frame. A plurality of laser heads are fixedly installed on the detection lamp bank, a light gathering shell is fixedly arranged on the inner side of the detection frame, the upper end of the light gathering shell is arranged in an inclined mode, and a light inlet hole for light rays of the laser heads to enter is formed in the upper end of the light gathering shell. According to the utility model, the plurality of laser heads are arranged, and the principle of light beam irradiation is utilized, so that when the surface of glue is flat, a red laser beam irradiates vertically downwards, and when the surface of the glue is uneven, the red laser beam is refracted due to contact with an irregular surface, and the red laser beam inclines; therefore, the coating quality of glue on the adhesive tape is obtained.

The invention provides a lighting system mixing three-color pure laser and fluorescent powder and a projection device applying the lighting system. The lighting system is favorable for improving the phenomenon of laser speckles and comprises a laser light source module, a wavelength conversion piece, a partition dichroic mirror and a light equalizing assembly. The laser light source module is used for providing blue, green and red laser beams. The wavelength conversion piece is located on a transmission path of the three-color laser beam, and the wavelength conversion piece is used for reflecting the three-color laser beam and converting the blue laser beam into an excited laser beam. The partition dichroic mirror is located on a transmission path of the three-color laser beam and the excited light beam and is used for reflecting at least one part of the three-color laser beam and the excited light beam from the wavelength conversion piece. The light uniformizing assembly is located on a transmission path of at least one part of the three-color laser beam and the excited light beam and used for receiving and uniformizing at least one part of the three-color laser beam and the excited light beam from the partition dichroic mirror so as to provide an illumination beam.