34 results about "Laser fluorescence" patented technology

The invention discloses a light source, an optical device, a related device and a method. The light source is used for emitting laser and fluorescence mixed light beams, and the optical device can be applied to the light source. The optical device can emit a fluorescent light beam under the excitation of the first laser beam in the light source, and can inhibit the speckle of the second laser beam in the light source, so that the light source can emit a fluorescent laser mixed light beam inhibiting the speckle, the number of devices in the light source can be reduced, and the volume of the projection light source can be reduced. And the market demand of miniaturization of the projector is met.

The invention provides a light generating system (1000) comprising light generating devices (110,120,130), a luminescent material (200), a control system (300), optics (500), a polarization control system (600), a diffuser system (1710), and a light exit (1090); wherein: (I) each of the light generating devices (110,120,130) comprise a solid-state light source (10,20,30); the luminescent material (200) is configured to convert at least part of the device light received by the luminescent material (200) into luminescent material light (201): the diffuser system (1710) is configured to diffuse at least part of the device light received by the diffuser system (1710) into diffused device light (711); (II) the optics (500) comprise redirection optics (510); wherein the redirection optics (510) comprise polarization based redirection optics (PPBS1,PBS2) and dichroic based redirection optics (DBS1,DBS2); (III) a first dichroic redirection optics (DBS1) is configured to combine first device light (111) and second device light (121) received by the first dichroic redirection optics (DBS1); the polarization control system (600) is configured to control a polarization of device light propagating from the first dichroic redirection optics (DBS1) to the first polarization redirection optics (PPBS1) via the polarization control system (600); the first polarization redirection optics (PPBS1) is configured to direct device light received from the first dichroic redirection optics (DBS1), in dependence of its polarization, to one or more of (a) the luminescent material (200) via second dichroic redirection optics (DBS2) and (b) the diffuser system (1710) via second polarization redirection optics (PBS2); the second dichroic redirection optics (DBS2) is configured to direct device light received from the first polarization redirection optics (PPBS1) to the luminescent material (200) and to direct the luminescent material light (201) to the light exit (1090); the second polarization redirection optics (PBS2) is configured to direct the device light received from the first polarization redirection optics (PPBS1) to the diffuser system (1710) and to direct diffused device light (711) to the light exit (1090); and (IV) the control system (300) is configured to control a spectral power distribution of system light (1001) of the light generating system (1000).

The invention discloses a high-throughput detection system for microbial contamination in fermented food, and relates to the technical field of fermented food microbial detection, and the high-throughput detection system comprises a sample pretreatment module for performing differential treatment on pickled vegetables, fermented milk and the like and enriching microorganisms; the nucleic acid extraction module is used for extracting by a paramagnetic particle method; the high-throughput amplification module is used for detecting a sample at a time by using a digital PCR instrument; the detection and analysis module is used for laser fluorescence detection; a data storage and management module, an industrial-grade server and a cloud backup; and the quality control module contains a standard nucleic acid library, synchronously performs blank and negative and positive control, and does not pass sound-light alarm. The method is suitable for complex substrates of fermented food, detection is accurate and efficient, and the detection period is shortened; cross-laboratory data synchronization is supported, emergency response is quick, pollution can be quickly positioned, disposal suggestions can be provided, and fermented food quality supervision and risk prevention and control are assisted.

A light source, an optical device, and a related apparatus and method. The light source is used for emitting a laser-fluorescence mixed light beam, and the optical device can be applied to the light source. The optical device can emit a fluorescent light beam under the excitation of a first laser beam in the light source, and can also suppress speckles of a second laser beam in the light source, thus facilitating the light source in emitting a fluorescence-laser mixed light beam for suppressing speckles, and also helping to reduce the number of devices in the light source, reducing the size of a projection light source, and meeting the market demand for projector miniaturization.

The invention provides a light generating system (1000) comprising light generating devices (110,120,130), a luminescent material (210), a control system (300), redirection optics (510), a diffuser system (1710), and a light exit (1090); wherein: (A) (i) a first light generating device (110) is configured to provide first device light (111) having a first centroid wavelength (λc1), (ii) a second light generating device (120) is configured to provide second device light (121) having a second centroid wavelength (λc2), and (iii) a third light generating device (130) is configured to provide third device light (131) having a third centroid wavelength (λc3); wherein λc3≠λc1 and λc3≠λc2; wherein the first device light (111), the second device light (121), and the third device light (131) reaching the redirection optics (510) comprise linear polarized light; (B) the luminescent material (210) is configured to convert at least part of device light into luminescent material light (201): (C) the diffuser system (1710) is configured to diffuse at least part of the third device light (131) received by the diffuser system (1710) into diffused device light (711); (D) the redirection optics (510) comprise (a) a first polarizing beam splitter is configured to combine the first device light (111) and the second device light (121); (b) one or more further polarizing beam splitters configured to (a) direct third device light (131) in an optical path to the luminescent element (200) and in an optical path to the diffuser system (1710) in dependence of the linear polarization of the third device light (131), and (ii) split third device light (131) propagating to the diffuser system (1710) from diffused device light (711) emanating from the diffuser system (1710); (c)one or more dichroic based redirection optics are configured to (a) direct the combined device light (116) and at least part of the third device light (131), received from the first polarizing beam splitter to the luminescent element (200), (ii) split the combined device light (116) from the luminescent material light (201), and (iii) direct the luminescent material light (201) and the diffused device light (711) to the light exit (1090); (E) the light generating system (1000) is configured to generate in an operational mode system light (1001) comprising at least part of the luminescent material light (201) and at least part of the diffused light (711), and wherein the system light (1001) is white light; and (F) the control system (300) is configured to control a spectral power distribution of the system light (1001).

The invention discloses a narrow-band emission fluorescent powder-glass composite material for laser fluorescent display as well as a preparation method and application of the narrow-band emission fluorescent powder-glass composite material. The problems of heat accumulation and efficiency attenuation of traditional fluorescent powder under high-power laser irradiation are solved through a rapid compounding process of an ultralow-melting-point glass matrix (SnF2-NaF-P2O5 system) and narrow-band fluorescent powder (such as KSF: Mn and beta-SiAlON: Eu) in cooperation with a dynamic heat dissipation design of a device. Stable light output is achieved under the 50W laser power, the luminous flux reaches 684lm and 4770lm respectively, and the color gamut covers 125% Rec.709 after the blue laser is coupled with blue laser. Meanwhile, the device is suitable for various commercial fluorescent powder and supports the design of a patterned fluorescent rotating wheel. The application bottleneck of traditional fluorescent powder is broken through, and the fluorescent powder is particularly suitable for high-end display scenes such as IMAX cinema, AR / VR immersive display and high-brightness engineering projection.

The invention provides a light generating system (1000) comprising a first laser light source (110), a second laser light source (120), optics (500), a luminescent material (200) and a diffuser element (400), wherein: (A) the first laser light source (110) is configured to generate first laser light (111) having a first peak wavelength (λp1) selected from the range of 430-490 nm; (B) the second laser light source (120) is configured to generate second laser light (121) having a second peak wavelength (λp2) selected from the range of 430-490 nm; (C) the optics (500) comprises (i) a first optical element (510), configured downstream of the first laser light source (110), and (ii) a second optical element (520), configured downstream of the first optical element (510); (D) the luminescent material (200) is configured downstream of the first optical element (510), wherein the luminescent material (200) is configured to convert at least part of the first laser light (111) into luminescent material light (201), such that at least part of the luminescent material light (201) propagates to the second optical element (520); wherein one of the following applies: (i) the first optical element (510) is configured to (a) at least partially transmit the first laser light (111), (b) at least partially reflect the luminescent material light (201); (ii) the first optical element (510) is configured to (a) at least partially reflect the first laser light (111), (b) at least partially transmit the luminescent material light (201); (E) the diffuser element (400) is configured downstream of the second laser light source (120), wherein the diffuser element (400) is configured to transmit and diffuse at least part of the second laser light (120) such that diffused laser light (401) propagates to the second optical element (520); (F) the second optical element (520) is configured to combine at least part of the luminescent material light (201) and at least part of the diffused laser light (401) into a same optical path; and (G)the light generating system (1000) is configured to generate system light (1001) comprising at least part of the luminescent material light (201) and at least part of the diffused laser light (401).

The utility model discloses a light source device and projection equipment, the light source device comprises a laser module, a fluorescent module and a dodging piece, and the laser module is used for generating specified laser; the fluorescence module is used for generating specified fluorescence; the dodging piece is arranged on a light path where the specified laser and the specified fluorescent light are located; the dodging piece is provided with a light incident surface, the specified laser is incident to the light incident surface to form a laser spot, the specified fluorescent light is incident to the light incident surface to form a fluorescent light spot, and the laser spot and the fluorescent light spot do not coincide. The laser spot and the fluorescent light spot are not overlapped, so that the specified laser and the specified fluorescent light are not combined in the process of being transmitted to the light uniformizing piece, but are respectively incident to the light uniformizing piece as two paths of independent light rays. Therefore, the light source device can avoid fluorescence loss caused by the arrangement of the light combination part, so that the projection equipment provided with the light source device has higher projection brightness.

The invention discloses a laser fluorescence uranium measurement method based on a fluorescence enhancer. The laser fluorescence uranium measurement method comprises the following steps: pre-treating a sample; precisely weighing 0.1000 g of a sample, and placing the sample in a porcelain crucible; heating the sample in a muffle furnace at 600 DEG C for 1 hour to remove sulfur and organic matters in the sample, taking out the crucible through a mechanical arm, and brushing the powder into a polytetrafluoroethylene crucible after the crucible is taken out; treating a sample; adding a mixed solution of 5mL of nitric acid, 3mL of perchloric acid and 2mL of hydrofluoric acid into the sample powder in the step 1.1; placing the crucible on a temperature-controlled electric heating plate, heating for 1 hour at the temperature of less than or equal to 300 DEG C, and after the sample is completely decomposed, opening a cover and evaporating until the white smoke is completely dispersed; cooling, adding 1mL of nitric acid to wash the inner wall of the crucible, and heating again until the sample solution is concentrated to be in a wet salt state; when the laser fluorescence uranium measurement method based on the fluorescence enhancer is used, suspended solids of high-sulfur and high-organic-matter samples can be effectively eliminated, the treatment time can be shortened, and the whole detection method is more efficient and accurate and suitable for application and popularization.

The invention discloses a fluorescence aerosol standard generation device and a calibration method, and belongs to the technical field of laser fluorescence detection.The fluorescence aerosol standard generation device comprises a fluorescence aerosol generation part, a calibration part and a control part, and the fluorescence aerosol generation part can continuously and stably output aerosol according to the preset concentration, flow and particle size spectrum; and the fluorescent aerosol calibration part is connected with the aerosol output end of the fluorescent aerosol generation part so as to carry out accurate counting and attribute calibration on the generated aerosol. The particle size and concentration of aerosol can be accurately controlled, an advanced aerosol detection system is arranged, and the number of aerosol particles can be monitored and verified in real time, so that a stable and countable aerosol sample is provided, and the requirements of high-precision monitoring and research are met.

A light generating system (1; 100) comprising: a first solid-state light source (3) configured to emit first light source light (4); a luminescent element (5) being arranged downstream of the first solid-state light source and being configured to, at least partly, convert the first light source light (4) into green-yellow converted light (6) comprising short wavelength green-yellow converted light (61) having a first centroid emission wavelength, λc1, and long wavelength green-yellow converted light (62) having a second centroid emission wavelength, λc2, where λc2 > λc1; a first dichroic mirror (7) being arranged downstream of the first solid-state light source (3), being transparent for the first light source light (4) and reflective for the long wavelength green-yellow converted light (62), and arranged to direct the first light source light in a direction towards the luminescent element (5); a second dichroic mirror (8) being arranged downstream of the luminescent element (5), and being arranged to direct the short wavelength green-yellow converted light (61) in a direction towards the luminescent element (5); the luminescent element (5) being configured to receive the short wavelength green-yellow converted light (61) and convert the short wavelength green-yellow converted light (61) into long wavelength green-yellow converted light (62); a second solid-state light source (9) configured to emit second light source light (10); a third solid-state light source (11) configured to emit short wavelength green light source light (12); a first polarizing beam splitter (15) being arranged downstream of the second solid-state light source (9) and of the third solid-state light source (11), and being transparent for the second light source light (10) and the short wavelength green light source light (12); a first diffusing element (16) configured to diffuse the second light source light (10) to provide diffuse blue light (17) and to diffuse the short wavelength 20 green light source light (12) to provide diffuse short wavelength green light (18); and a first polarization rotator element (19) being configured to rotate the polarization of the diffuse blue light (17) to provide polarization rotated diffuse blue light (20) and to rotate the polarization of the diffuse short wavelength green light (18) to provide polarization rotated diffuse short wavelength green light (21), the first polarizing beam splitter (15) further being reflective for the polarization rotated diffuse 25 blue light (20) and the polarization rotated diffuse short wavelength green light (21), wherein, in an operational mode of the light generating system the system light (2), comprises the long wavelength green-yellow converted light, the polarization rotated diffuse blue light (20), and the polarization rotated diffuse short wavelength green light (21).

The invention discloses a method for observing the influence of icaritin on hepatic fibrosis by using laser fluorescence, and relates to the technical field of hepatic fibrosis research, laser fluorescence is used for recording and deducing the influence of icaritin on hepatic fibrosis, and deducing conditions comprise liver function detection, inflammation detection and hepatic fibrosis level evaluation. Compared with the prior art, the method has the advantages that the icaritin is mixed by using the fluorescent substance and injected into the rat body, so that the fluorescent substance can be dispersed into the hepatic fibrosis tissue through the icaritin, and then the fluorescent substance is measured through the optical fiber sensor; according to the method, the specific distribution and concentration change of the icaritin on the hepatic fibrosis and the interaction condition of the icaritin and related biomolecules can be accurately measured, meanwhile, the action change of the icaritin in the dynamic development process of the hepatic fibrosis can be timely captured, and the influence of the icaritin on hepatic fibrosis tissues can be reflected in real time.

An apparatus for high dynamic range (HDR) modulation includes one or more lasers configured to transmit respective beams of laser light with a single color mode and a PLM optically coupled to the one or more lasers. The PLM is configured to modulate the laser light to produce a first modulated light. The apparatus also includes a phosphor optically coupled to the PLM and configured to receive at least a first portion of the first modulated light from the PLM and to emit a phosphor light with multiple color modes. At least one spatial light modulator (SLM) is also optically coupled to the phosphor and configured to modulate the multiple color modes in the phosphor light and the single color mode to project a second modulated light.

The surgical instrument includes an elongate body including a proximal end portion and a distal end portion, and a tissue separator coupled to the distal end portion and configured to engage sample tissue for collection, the tissue separator being at least partially made from a material that allows light to pass through the tissue separator. A method of collecting biological material using a tissue collection device includes inserting the tissue collection device into an anatomical structure of a patient, guiding a tissue collector of the tissue collection device to a target tissue, viewing the target tissue through the tissue collector, and collecting biological material from the target tissue with the tissue collection device.

The invention provides a light generating system (1000) comprising light generating devices (110,120,130), a luminescent material (210), a control system (300), redirection optics (510), a diffuser system (1710), and a light exit (1090); wherein: (A) (i) a first light generating device (110) is configured to provide first device light (111) having a first centroid wavelength (λc1), (ii) a second light generating device (120) is configured to provide second device light (121) having a second centroid wavelength (λc2), and (iii) a third light generating device (130) is configured to provide third device light (131) having a third centroid wavelength (λc3); wherein λc3≠λc1 and λc3≠λc2; wherein the first device light (111), the second device light (121), and the third device light (131) reaching the redirection optics (510) comprise linear polarized light; (B) the luminescent material (210) is configured to convert at least part of device light into luminescent material light (201): (C) the diffuser system (1710) is configured to diffuse at least part of the third device light (131) received by the diffuser system (1710) into diffused device light (711); (D) the redirection optics (510) comprise (a) a first polarizing beam splitter is configured to combine the first device light (111) and the second device light (121); (b) one or more further polarizing beam splitters configured to (a) direct third device light (131) in an optical path to the luminescent element (200) and in an optical path to the diffuser system (1710) in dependence of the linear polarization of the third device light (131), and (ii) split third device light (131) propagating to the diffuser system (1710) from diffused device light (711) emanating from the diffuser system (1710); (c)one or more dichroic based redirection optics are configured to (a) direct the combined device light (116) and at least part of the third device light (131), received from the first polarizing beam splitter to the luminescent element (200), (ii) split the combined device light (116) from the luminescent material light (201), and (iii) direct the luminescent material light (201) and the diffused device light (711) to the light exit (1090); (E) the light generating system (1000) is configured to generate in an operational mode system light (1001) comprising at least part of the luminescent material light (201) and at least part of the diffused light (711), and wherein the system light (1001) is white light; and (F) the control system (300) is configured to control a spectral power distribution of the system light (1001).

Provided is a light source device, including a first laser light source group, a second laser light source group, a dichroic mirror, a fluorescence converter, and an emission component. The first laser light source group emits laser light of a first waveband, and the second laser light source group emits laser light of a second waveband and laser light of a third waveband. The dichroic mirror is disposed on light-output sides of the first laser light source group and the second laser light source group, and the fluorescence converter and the emission component are respectively disposed on light-output sides of the dichroic mirror. The dichroic mirror is configured to emit laser light of various wavebands, and the fluorescence converter generates target fluorescence under the excitation of the laser light of the first waveband, and the target fluorescence is reflected by the dichroic mirror to the emission component.

The application discloses a current sensor based on a solid-state spin system. The current sensor comprises four-way probes and a data processing unit. Each way probe comprises a magnetic sensitive unit, a microwave unit, an optical unit, two optical detection units and a lock-in amplifier. The optical unit comprises a laser generator and a lens group for dividing the laser emitted by the laser generator into two optical paths of the main path and the reference path. The magnetic sensitive unit comprises a diamond sample containing NV color centers in four main axis directions. The microwave unit comprises a wave source, a radiation structure, a waveguide structure and a wave source control system. The two optical detection units respectively convert the optical signals on the reference path and the fluorescence into corresponding electrical signals for demodulation by the lock-in amplifier. The application realizes four-axis closed-loop measurement by modifying the microwave frequency, and the directions of the four axes are determined by the crystal direction of the diamond single crystal, so that the current sensor has better stability and orthogonality compared with a three-axis TMR magnetic sensor composed of three TMR magnetic sensors.

The invention provides a uranium concentration on-line measuring instrument based on a laser fluorescence method, and belongs to the technical field of nuclear radiation monitoring and environmental analysis, the measuring instrument comprises a light source module, a sample module, a photoelectric conversion module and a data acquisition module, the light source module is connected with the sample module through an optical fiber; the photoelectric conversion module comprises a silicon photomultiplier SiPM and a pre-amplifier, the sample module is connected with the silicon photomultiplier SiPM through an optical fiber, the silicon photomultiplier SiPM is connected with the pre-amplifier through a signal line, and the pre-amplifier is connected with the data acquisition module through a signal line. According to the uranium concentration online measuring instrument based on the laser fluorescence method, the problems that an existing traditional laboratory analysis method is long in period and tedious in process, and existing field detection equipment is narrow in measuring range and insufficient in sensitivity are solved.

The invention discloses a laser fluorescent light source with dual purposes of illumination and projection, and relates to the technical field of laser projection, the laser fluorescent light source comprises an excitation light source, a dodging device, a light combining element, a light receiving lens group, a fluorescent color wheel and a reflector group, the dodging device is located between the excitation light source and the light combining element, and the fluorescent color wheel comprises a first color ring band and a second color ring band; wherein the light combining element is used for reflecting the blue laser dodging by the dodging device to the light receiving lens group and transmitting excited fluorescence from the fluorescence color wheel; the fluorescent color wheel is driven by the driving motor to rotate, and the first color ring belt or the second color ring belt is selectively switched to a light spot excitation position through the switching structure, so that a projection light source or an illumination light source is formed. And the reflecting mirror group is used for guiding the blue laser passing through the fluorescent color wheel to return to the light combining element. The laser fluorescent light source solves the problem that a laser fluorescent light source in the prior art cannot achieve dual purposes of illumination and projection.

The utility model discloses a kind of laser fluorescent light source with dual purpose of illumination and projection, it is related to laser projection technical field, including excitation light source, light uniformizing device, light combining element, light collecting lens group, fluorescent color wheel and mirror group, light uniformizing device is between excitation light source and light combining element, fluorescent color wheel includes first color ring band and second color ring band;Wherein, light combining element is used to reflect blue laser after the light uniformizing device light uniformizing to light collecting lens group, and transmit excited fluorescence from fluorescent color wheel;Fluorescent color wheel rotates by the drive of driving motor and is selectively switched to excitation light spot position by switching structure first color ring band or second color ring band, to form projection light source or illumination light source;Mirror group is used to guide blue laser that passes through fluorescent color wheel to return to light combining element.The utility model solves the problem that laser fluorescent light source in prior art cannot realize dual purpose of illumination and projection.

The invention relates to a disturbance compensation device applied to a quantum current sensor and the quantum current sensor with an optical noise suppression function. The disturbance compensation device comprises an environment sensor array and a noise separation processor, wherein the environment sensor array is used for detecting environment disturbance in an external environment; the noise separation processor is used for receiving and acquiring a transmission disturbance signal captured by an end face detector in the quantum current sensor based on laser output by the laser and an original disturbance signal output by the laser in the quantum current sensor; a fluorescence detector in the quantum current sensor can determine a compensated current signal based on a light intensity signal determined by laser transmitted by an end face detector and environment disturbance output by an environment sensor array, so that current compensation is realized. Compared with a traditional laser-fluorescence cross-correlation observation device, the disturbance compensation device gives consideration to environment disturbance, original disturbance of the laser and transmission disturbance of the laser, and more accurate current signals can be obtained.

The invention relates to an optical nonlinear operation device, an optical nonlinear operation assembly and a preparation method of a fluorescent material. The optical nonlinear arithmetic device comprises a fluorescent material layer and a reflecting layer, wherein the fluorescent material layer covers one side of a reflecting surface of the reflecting layer; the fluorescent material layer comprises a fluorescent material, the fluorescent material layer is used for absorbing part of incident laser emitted by the incident light source, and the service life of the fluorescent material is 1 nanosecond to 50 microseconds; the reflecting layer comprises a plane reflecting mirror and is used for reflecting the rest of incident laser emitted by the incident light source except for part of the incident laser. By adopting the device provided by the invention, the calculation effect of optical calculation can be improved.

The invention relates to a sea surface oil film thickness detection method based on a laser fluorescence spectrum and a multiband fluorescence index, which comprises the following steps: acquiring fluorescence spectrum data of an oil film of a sample to be detected, and taking an average value of every N spectra as an original fluorescence spectrum of the oil film sample; carrying out pretreatment on the original fluorescence spectrum summer falsification; for a to-be-detected sample, calculating fluorescence spectrum indexes of an oil film of the detected sample based on different types of fluorescence index calculation formulas; based on the fluorescence spectrum index of the oil film of the detection sample, constructing different types of oil film thickness prediction models; and based on the evaluation indexes, determining different types of oil film thickness prediction models and corresponding optimal emission wave band combinations, thereby realizing oil film thickness detection. An oil film thickness prediction model is established by utilizing a quantitative analysis method and combining oil spill simulation experiment data, and fluorescence spectrum analysis is used as a non-contact and high-sensitivity detection means, so that the thickness change of the oil film can be reflected through the fluorescence characteristic of the oil film.

The invention provides a light generating system (1000) comprising a first solid state light source (10), a first luminescent converter (2100), a second luminescent converter (2200), and a first thermally conductive body (3100); wherein: (A) the first luminescent converter (2100) and the second luminescent converter (2200) are configured physically separated by a shortest distance d1, thereby defining an inter-converter cavity (1200); wherein 0.3 mm ≤ d1 ≤ 3 mm; (B) the first luminescent converter (2100) comprises a first converter first major face (2110) and a first converter second major face (2120) opposite the first converter first major face (2110); wherein the first luminescent converter (2100) is configured in thermal contact with the first thermally conductive body (3100) at the first converter second major face (2120); (C) the first solid state light source (10) comprises a laser light source and / or a superluminescent diode, wherein the first solid state light source (10) is configured to generate first light source light (11); wherein the first solid state light source (10) is configured to irradiate the first converter first major face (2110) via a first optical path (31) between the first solid state light source (10) and the first luminescent converter (2100); wherein the first optical path (31) intersects at least part of the inter-converter cavity (1200) and passes by the second luminescent converter (2200); wherein the first luminescent converter (2100) is configured in the reflective mode; wherein the first luminescent converter (2100) is configured to (i) convert part of the first light source light (11) received by the first luminescent converter (2100) into first luminescent converter light (2101), and (ii) reflect at least part of the first light source light (11) received by the first luminescent converter (2100) to the second luminescent converter (2200) as reflected first light source light (111); (D) the second luminescent converter (2200) is configured to (a) convert at least part of the reflected first light source light (111) received by the second luminescent converter (2200) into second luminescent converter light (2201), and (b) transmit at least part of the first luminescent converter light (2101) received by the second luminescent converter (2200); wherein the second luminescent converter (2200) is configured in the transmissive mode; and (E) the light generating system (1000) is configured to generate system light (1001) comprising (a) first luminescent converter light (2101) transmitted by the second luminescent converter (2200) and (b) second luminescent converter light (2201).

The invention provides a light generating system (1000) comprising light generating devices (100), a luminescent material arrangement (2000), a diffuser arrangement (7000), optics (500), a polarization control system (600), and a control system (300); wherein: (A) the light generating devices (100) comprise (i) a first light generating device (110) configured to generate first device light (111), and (ii) a second light generating device (120) configured to generate second device light (121); (B) the luminescent material arrangement (2000) comprises a luminescent material (200) configured to convert at least part of first device light (111) and / or second device light (121) received by the luminescent material (200) into luminescent material light (201); (C) the diffuser arrangement (7000) comprises a diffuser (700) configured to diffuse first device light (111) received by the diffuser (700) into diffused device light (701); (D) the optics (500) comprise a first polarizing beam splitter (510) configured such that the first device light (111) and the second device light (121) received by the first polarizing beam splitter (510) comprise polarized light; (E) the first polarizing beam splitter (510) is configured (i) to transmit or reflect light received by the first polarizing beam splitter (510) and comprising a first linear polarization and (i) to reflect or transmit light received by the first polarizing beam splitter (510) and comprising a second linear polarization, different from the first linear polarization; (F) the polarization control system (600) is configured to control a polarization of the first device light (111) reaching the first polarizing beam splitter (510); (G) the optics (500) and the second light generating device (120) are configured such that (i) at least 90% of the second device light (121) received by the first polarizing beam splitter (510) is directed towards the luminescent material arrangement (2000), and (ii) in a first operational mode, in dependence of the polarization, at least part of the first device light (111) received by the first polarizing beam splitter (510) is directed towards the luminescent material arrangement (2000) and at least another part of the first device light (111) received by the first polarizing beam splitter (510) is directed towards the diffuser arrangement (7000); (H) the light generating system (1000) is configured to provide system light (1001) comprising one or more of at least part of the luminescent material light (201) and at least part of the diffused device light (701); and (I) the control system (300) is configured to control the system light (1001).

The invention discloses a photoetching defect detection device which comprises a photoresist, and a polymer resin structure of the photoresist comprises a fluorescent molecular group. The wavelength of fluorescent light emitted by the fluorescent molecular groups under excitation is required to be in yellow light insensitive to the photoresist and a wave band above the yellow light. The laser is used for emitting laser for excitation of the fluorescent molecular group; and the fluorescence detector is used for collecting fluorescence excited by the fluorescence molecular groups and forming a fluorescence image or a fluorescence image. The invention also discloses the photoresist. The invention also discloses a photoetching defect detection method. According to the method, the defects in the photoresist can be detected on the premise of not influencing exposure, and in particular, in-situ dynamic monitoring of the defects can be realized in a photoetching process.

The invention relates to the technical field of medical equipment, and discloses an IPG laser fluorescence-based decayed tooth early diagnosis detector and method.The IPG laser fluorescence-based decayed tooth early diagnosis detector comprises an outer shell, the inner side of the outer shell is detachably connected with a storage shell, the inner side of the storage shell is slidably connected with a moving plate, one side of the moving plate is fixedly connected with a driving rack, and the driving rack is slidably connected with the storage shell; a micro motor is installed on the outer side of the storage shell, the output end of the micro motor is fixedly connected with a transmission shaft, and the end of the transmission shaft is fixedly connected with a second driving gear. The automatic storage function of the detection head is realized. In this way, the detection head can be well protected in a non-working state, damage caused by accidental collision or contact is avoided, and the cleaning roller can be ingeniously driven to rotate through the design of the moving path of the detection head in the storage and extension process of the detection head. And the cleaning roller continuously cleans the surface of the detection head, so that residual saliva, dental plaque and other oral cavity residues in the use process of the detection head can be removed in time.

The invention provides a light path structure of an LCOS projection light machine using a laser fluorescent ceramic light source, which is applied to the technical field of projection display, and is characterized in that a blue excitation light source array emits blue excitation light to excite static fluorescent ceramic to generate red-green mixed light; the blue laser light source emits blue laser for supplementing the blue laser, and then high-brightness red light, green light and blue laser can be emitted to the LCOS through processing of the light combining element, the polarization processing optical element, the color control optical group, the polarization light splitting element and the like and then emitted out from the projection lens after being modulated by the LCOS. The fluorescent material has the technical effects that wavelength conversion can be stably carried out on exciting light, the heat dissipation performance and the laser damage resistance threshold value of the fluorescent material are improved, and the output luminous flux of a light source is increased; and moreover, the projection picture of the projection light machine has the characteristic of high brightness, and the projection light machine can also perform clear imaging in a bright environment, so that the problem that the picture is not clear when the projection light machine is used in the bright environment is solved.

The embodiment of the invention discloses a light source device which utilizes an integrated wavelength conversion device comprising a wavelength conversion area and a laser dissipation area, wavelength conversion of laser can be realized through the wavelength conversion area of the wavelength conversion device, and laser generated by a narrow-band light source can be dissipated through a laser diffusion area of the wavelength conversion device. A planar vibration device of an independent diffusion wheel or diffusion sheet is not needed, so that the speckle problem is effectively improved; and secondly, by adopting the light source device of the integrated wavelength conversion device, laser dissipation and laser fluorescence excitation are realized at the same time, a diffusion element does not need to be additionally arranged, the system size is reduced, and the cost is reduced.

The invention provides a light generating system (1000) wherein: (A) a first light generating device (110) is configured to provide (blue) first device light (111); (B) a second light generating device (120) is configured to provide (red) second device light (121); (C) a luminescent material (200) is configured to convert first device light (111) into luminescent material light (201); (D) a first diffuser assembly (1710) is configured to diffuse first device light (111) into first diffused device light (711); (E) a second diffuser assembly (1720) is configured to diffuse second device light (121) into second diffused device light (721); (Fl) a first redirection optical element (515) is configured (a) to (i) reflect the luminescent material light (201), (ii) transmit the second diffused device light (721), and (iii) reflect or transmit (blue) light in dependence of its linear polarization, or (b) to transmit the luminescent material light (201), (ii) reflect the second diffused device light (721), and (iii) reflect or transmit (blue) light in dependence of its linear polarization; wherein the first redirection optical element (515) is configured to direct a part of the first device light (111) having a first linear polarization in an optical path to the luminescent material (200) and to direct another part of the first device light (111) having a second linear polarization in an optical path to the first diffuser assembly (1710); (F2) a second redirection optical element (525) is configured (a) to (i) reflect (blue) light, (ii) transmit the second diffused device light (721) to the first redirection optical element (515), and optionally (iii) reflect the second device light (121) to the second diffuser assembly (1720), or (b) to (i) transmit (blue) light, (ii) reflect the second diffused device light (721 to the first redirection optical element (515), and optionally (iii) transmit the second device light (121) to the second diffuser assembly (1720); (G) a polarization control system (600) is configured to control the polarization of the first device light (111) reaching the first redirection optical element (515); (H) the light generating system (1000) is configured to generate in a first operational mode of the light generating system (1000) white system light (1001) comprising luminescent material light (201), first diffused device light (711), and second diffused device light (721); and (I) a control system (300) is configured to control one or more of a spectral power distribution, a correlated color temperature, a color gamut, and a color rendering index of the system light (1001).