23results about How to "Reduce coherence" patented technology

The invention provides a deformable mirror assembly comprising a deformable mirror body, the back of which is provided with a telescopic piezoelectric actuator comprising a plurality of linearly arranged actuating units; the cushion block is arranged on the back surface of the deformable mirror body; the control system is used for providing actuating alternating current voltage for the telescopic piezoelectric actuator, so that sinusoidal vibration of different actuating units adopts random amplitude and random phase; the maximum peak-valley amplitude, caused by sinusoidal vibration, of the mirror surface of the deformable mirror body overcomes the Rayleigh criterion, the periodicity of the spatial frequency is destroyed through the randomness of the phase of the actuating unit, and therefore homogenization of light beam speckles is achieved when the deformable mirror body is used for light beam deflection. The invention also provides a corresponding two-dimensional optical system. According to the deformable mirror assembly, the speckle uniformity in the imaging process is improved, and the influence of speckles is reduced.

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

The invention discloses a laser absorption spectrum system for random noise modulation, which relates to the technical field of trace gas detection of absorption spectrum technology, and is characterized in that a signal generation module generates random noise and low-frequency triangular waves with different powers, different bandwidths and different distribution characteristics; laser generated by the light source module is modulated through random noise and low-frequency triangular waves; laser generated by the light source module enters the light flux cell, namely the annular optical multi-pass cell and reciprocates; the signal processing module receives emergent light of the light flux cell and generates a first feedback signal and a second feedback signal according to the emergent light of the light flux cell; the signal generation module adjusts random noise according to the first feedback signal; the light source module adjusts the laser incident angle according to the second feedback signal. According to the invention, random noise modulation is carried out on the light source, interference noise of the system is suppressed, and under the condition that the physical size and the structure of the light flux cell are ensured, the distribution number of mirror light spots is increased, and the effective absorption optical path of gas in the light flux cell is improved, so that high-sensitivity detection of trace gas is realized.

The embodiment of the utility model belongs to the technology of laser projection equipment, and provides laser projection equipment, which comprises a laser light source, a light beam adjusting assembly and a projection lens, and is characterized in that the light beam adjusting assembly comprises a first light beam adjusting part and a second light beam adjusting part; the first light beam adjusting component is located on the light emitting side of the laser light source and used for emitting a first part of incident light in the first polarization direction and emitting a second part of the incident light to the second light beam adjusting component. The second light beam adjusting component is used for reflecting the second part to the first light beam adjusting component and enabling the second part to be emitted in a second polarization direction; the light beam adjusting assembly is configured to emit the first part in a first polarization direction and emit the second part in a second polarization direction, so that the first part and the second part with different polarization directions are emitted to the projection lens. Therefore, by repeatedly using the first light beam component, the light path design can be simplified, the size of the laser projection equipment can be reduced, and the miniaturization of the laser projection equipment can be conveniently realized.

The embodiment of the application belongs to the technical field of projection display, and relates to an optical machine, which comprises a light emitting module, a diffusion element, a light guiding module and a driving module. The light emitting module is used for emitting first light source light. The diffusion element is used for transmitting and reducing the coherence of the first light source light. The light guiding module is arranged on the side of the diffusion element away from the light emitting module, and is used for receiving and reflecting the first light source light emitted from the diffusion element. The driving module is used for driving the diffusion element to move in a plane formed by a first direction and a second direction. The first direction is perpendicular to the optical axis direction of the diffusion element, and the second direction is perpendicular to the first direction. The diffusion element is also used for transmitting and reducing the coherence of the first light source light reflected from the light guiding module. The embodiment of the application also relates to a projection device comprising the optical machine.

The invention provides a light source system, a modulation method of the light source system and a projection device, the light source system comprises a laser light source, and the laser light source is used for emitting first laser and second laser; the segmented scattering wheel is arranged on the light emitting side of the laser light source, and the segmented scattering wheel can penetrate through the first laser and reflect the second laser; the segmented fluorescent wheel is arranged on a light path of the second laser, and the segmented fluorescent wheel can be excited by the second laser to form fluorescent light; and the light combining element is arranged on a light path of the first laser and the fluorescent light, and the light combining element is used for mixing and outputting the first laser and the fluorescent light. According to the light source system provided by the invention, the speckle problem can be reduced and the film watching comfort can be improved under the condition of keeping high brightness.

The invention discloses a display device and a vehicle including the same. The display device includes: a first substrate; the pixel electrode is arranged on the first substrate; a pixel defining layer disposed on the first substrate and covering at least a portion of the pixel electrode; a second substrate disposed on the pixel defining layer and spaced apart from the first substrate and the pixel defining layer to define a space between the second substrate and the pixel defining layer; and a light blocking pattern disposed on a surface of the second substrate facing the first substrate and overlapping the pixel defining layer in a plan view.

The utility model relates to a mixed light source system and projection equipment. The mixed light source system comprises a laser assembly, an LED assembly and a light guide assembly. The laser assembly comprises a red laser used for emitting a red laser beam, a green laser used for emitting a green laser beam and a blue laser used for emitting a blue laser beam. The LED assembly is used for emitting LED light beams, and the LED light beams at least comprise red LED light beams; the light guide assembly is located on the light emitting sides of the red laser, the green laser, the blue laser and the LED assembly, and the light guide assembly is used for guiding the red laser beam, the green laser beam, the blue laser beam and the LED beam to the same direction for propagation, so that a target beam is formed; according to the invention, the speckle problem of the mixed light source system can be reduced, and the brightness is improved.

The present application relates to a kind of new near hemispherical probe and its preparation method, the near hemispherical probe can retain the excellent electrical characteristics of three-dimensional spherical structure, the area of collection electrode is small under the same electrode spacing, and the capacitance is low, and charge collection efficiency is almost independent of θ.Hemispherical electrode has good sealing, completely isolates detection sensitive area from substrate, dark current is not affected by wafer thickness, and extremely low noise is conducive to low-energy X-ray or low-energy particle detection.

The embodiment of the present invention discloses a microwave frequency comb generation system and generation method. The microwave frequency comb generation system includes a pump source, a coupling structure, a photomechanical microcavity and a first photodetector; the pump source is used to provide pump light, and the pump light is coupled into the coupling structure; the coupling structure is used to couple the pump light into the photomechanical microcavity; the photomechanical microcavity includes an optical mode and a mechanical mode; the pump light excites the optical mode in the photomechanical microcavity; the optical mode is coupled with the mechanical mode to generate a dynamic reaction; the dynamic reaction drives the mechanical mode to generate an optical sideband and output an optical frequency comb; the first photodetector is located at the output end of the photomechanical microcavity, and is used to receive the optical frequency comb, and the beat frequency between the teeth of the optical frequency comb generates a microwave frequency comb. The technical solution of the embodiment of the present invention can generate a high-performance, wide-bandwidth, low-repetition-rate microwave frequency comb for chip integration.

The utility model discloses a security oil pressure interlocking steam turbine generator protection system, and belongs to the field of steam turbine generator technology ETS body protection. According to the structure, a security oil system is connected with a first pressure switch and a second pressure switch through a pressure guiding pipe, an automatic main steam valve closing travel switch inputs signals to an ETS protection system module through a contact of the automatic main steam valve closing travel switch in a DI mode, and the first pressure switch inputs signals to the ETS protection system module through a contact of the first pressure switch in a DI mode. The second pressure switch inputs a signal to the ETS protection system module through a contact of the second pressure switch in a DI mode, and the ETS protection system module is electrically connected with the generator circuit breaker. According to the utility model, the interlocking mechanism of the turbine and the generator can be effectively improved, and redundancy protection is increased. The automatic main steam valve closing travel switch and the security oil pressure switch are adopted to protect the system, so that the generator circuit breaker can be effectively disconnected under the emergency condition of the steam turbine, and a powerful guarantee is provided for the safe operation of the generator and the stability of an electric power system.

The utility model relates to the technical field of cultural education supplies, and discloses a loose-leaf type point-reading scratch book which comprises a picture frame plate, loose-leaf binding of a scratch base layer plate is achieved through binding rings at the top of the picture frame plate, compared with a traditional fixed binding scratch book, when a certain page is damaged or used up, the loose-leaf type point-reading scratch book can be replaced easily, resource waste is reduced, and the cost is reduced. The scraping pen containing groove formed in the outer wall of one side of the picture frame plate is matched with the spring and the arc-shaped clamp to form a scraping pen clamping structure, the problems that a scraping pen of a traditional scraping picture is prone to being lost and inconvenient to take and use are solved, the scraping picture pattern covering layer and the voice button are integrated on the top of the scraping picture base plate, and the scraping picture creation function and the point reading function are integrated; the loose-leaf type point-reading scratch book has the advantages that the problem of complicated operation caused by separation of traditional point-reading equipment and a scratch book is avoided, the continuity and interestingness of learning creation are enhanced, the loose-leaf type point-reading scratch book is ingenious in structure and high in practicability, defects of traditional products are effectively overcome, and the loose-leaf type point-reading scratch book has good market application prospects.

The application relates to a speckle-eliminating laser projector, which comprises a plurality of laser light sources, a light mixing assembly, a speckle-eliminating sheet, a projection chip and a projection lens arranged along a light path in sequence, the laser light sources are used for emitting RGB light, the light mixing assembly is used for mixing the RGB light into white light, the speckle-eliminating sheet is used for eliminating the speckle of the white light, the speckle-eliminating sheet is formed by splicing a plurality of light adjusting units, and the speckle-eliminating sheet comprises an incident light surface, and the incident light surface is formed with array-arranged microlenses. The application helps to improve the imaging effect of the laser projector.

The invention relates to a micropore internal illumination and imaging system, which comprises an optical illumination part and an optical imaging part, and is characterized in that the optical illumination part comprises an electrodeless laser driving point light source, a collimating lens, a semi-transparent and semi-reflective lens and a coupling system; the electrodeless laser driving point light source is used for generating an illumination light source; the collimating lens is used for collimating the illumination light source to form a collimated light beam; the semi-transparent and semi-reflective lens is arranged on a light path of the collimated light beam and is used for reflecting the collimated light beam to form a reflected light beam; the coupling system is arranged on a light path of the reflected light beam and is used for focusing the reflected light beam to form a focused light beam coupled into the micropore; and the optical imaging part is arranged on a light path of a transmission light beam of the semi-transmitting and semi-reflecting lens and is used for carrying out optical imaging on optical information in the micropore transmitted by the coupling system and the semi-transmitting and semi-reflecting lens. According to the system, a point light source can be coupled into the interior of the micropore, the interior of the micropore is illuminated, and optical information in the micropore is comprehensively presented.

The invention belongs to the technical field of distributed optical fiber sensing, and discloses a low-noise Brillouin sensing device and method based on injection-locked chaotic laser. The device comprises a broadband chaotic laser source, an adjustable attenuator, a polarization controller, a first circulator, a semiconductor laser, a beam splitter, an optical delay generator, an optical isolator, a sensing optical fiber, a single-sideband modulator, a semiconductor optical amplifier, a low-noise amplifier, a second circulator, an optical filter, a photodetector, a phase-locked amplifier, and a computer. The invention utilizes injection-locked chaotic laser to excite a narrowband correlation peak, suppresses the intensity noise introduced by the broadband chaotic laser source, improves the measurement signal-to-noise ratio, and can realize distributed temperature and strain monitoring with long distance, high spatial resolution, and high measurement accuracy.

The application provides an integrated mode-locked laser chip structure, a measuring system and a manufacturing method, which comprises a doped film, a gain microcavity and a modulation module, the gain microcavity is formed on the surface of the doped film, the modulation module is used for locking the phase of multiple longitudinal modes in the gain microcavity, and the doped film contains doped ions. The mode-locked laser is integrated on a chip to reduce the volume and power consumption of the mode-locked laser, so as to solve the problems of large volume, large power consumption and complex assembly of the mode-locked laser in the prior art.

The utility model relates to a speckle-eliminating laser coupling optical fiber system, comprising an incident optical fiber used for generating output light; the collimating lens is arranged on a light path of the output light and is used for converting the output light into parallel light; the converging lens is used for converting the parallel light into converged light; the diffusion sheet module is provided with a diffusion sheet assembly, the convergent light enters the diffusion sheet assembly, and the diffusion sheet assembly inhibits speckles of the convergent light through rotation; and the emergent optical fiber is used for coupling and outputting the converged light after speckle suppression. The utility model provides the laser coupling optical fiber system which can effectively reduce the laser speckle effect and has high light transmittance.

The invention provides a super-resolution imaging system and a biomarker detection method.The method comprises the steps that the super-resolution imaging system is used for conducting single-molecule fluorescence imaging on a specific biomarker in a biological sample, and multiple frames of original microscopic fluorescence images are obtained; and processing and analyzing the multiple frames of original microscopic fluorescence images to extract super-resolution distribution characteristic information of specific biomarkers on the surface of the biological sample, and content distribution and other quantitative characteristics of the specific biomarkers in the biological sample. The method comprises the following steps: processing an original microscopic fluorescence image to obtain positioning table data; rendering positioning points in the positioning table data to generate a super-resolution image; performing convolution operation, opening operation, convolution filtering and region segmentation on the super-resolution image to calculate the area of cells, the number of clusters and the area of a single cluster, determining the density of the clusters and the area ratio of the clusters by using the two, and calculating the closest distance between the clusters by using the center points of the clusters; and the accuracy of a biomarker detection result is greatly improved.

The invention discloses a light source device and an optical imaging system. The first laser light source comprises a first laser module and a second laser module, the first laser module is used for generating first laser, and the second laser module is used for generating second laser. The second laser light source comprises a third laser module and a fourth laser module, the third laser module is used for generating third laser, and the fourth laser module is used for generating fourth laser. The first polarization light combination module is arranged on a light path where the first laser and the third laser are located and used for generating first mixed light. The second polarization light combination module is arranged on the light path where the second laser and the fourth laser are located and used for generating second mixed light. The wavelength light combination module is arranged on a light path where the first mixed light and the second mixed light are located. According to the light source device in the embodiment, light combination is conducted on multiple paths of laser in the mode that polarization light combination is conducted firstly and then wavelength light combination is conducted, light spots of finally generated emergent light can be small, and the design difficulty and hardware cost of elements in a follow-up light path are reduced.

The present invention discloses a highly integrated high-power, wide color gamut and low-speckle laser light source system, comprising a blue laser light source I (1), a blue laser light source II (6), a green laser light source (7) and a red laser light source (8); the light beam emitted by the blue laser light source I (1) passes through a light homogenizer I (2), a yellow-transmitting blue beam combining mirror I (3) and a lens group I (4) in sequence and is incident on a fluorescent material (5); the light beam emitted by the blue laser light source II (6) passes through a light homogenizer II (6), a reflector (11), a yellow-transmitting blue beam combining mirror II (12), a red-transmitting blue-green beam combining mirror (13) and a lens group II (14) in sequence and is incident on a light pipe (15). The present invention realizes a laser light source with a large color gamut and is integrated with laser dense packing. At the same time, the selection of multiple wavelengths reduces the coherence of the light source, which can effectively suppress laser speckle and has a good market application prospect.

The invention discloses a spiral spanwise mode controller, and relates to the technical field of fluid dynamics and vibration control, and the spiral spanwise mode controller comprises a spiral micro-rib structure which is used for being arranged on the surface of an application main body, and the spiral micro-rib structure is spirally arranged around the application main body for at least one circle; and an included angle is formed between the spiral micro-rib structure and incoming flow. According to the spiral spanwise mode controller, aerodynamic noise and vibration generated by an application main body structure in the fluid streaming process can be effectively restrained, and meanwhile negative effects on aerodynamic characteristics of an application main body are reduced as much as possible.

The application provides a partial-coherence vortex beam topological charge measuring device and method based on light intensity analysis, which comprises the following steps: a solid laser emits laser light; a linear polarizer selects horizontal direction polarized light; a first lens focuses the polarized light; a frosted glass scatters the focused light to obtain incoherent light; a second lens collimates the partial-coherent light; a Gaussian filter shapes the collimated light to obtain a Gaussian Schell mode beam; a spatial light modulator modulates the Gaussian Schell mode beam to obtain a first Gaussian Schell mode vortex beam; a screening unit screens the first Gaussian Schell mode vortex beam to obtain a second Gaussian Schell mode vortex beam; a fifth lens focuses the second Gaussian Schell mode vortex beam to obtain a third Gaussian Schell mode vortex beam; and a charge-coupled device collects the light intensity diagram of the third Gaussian Schell mode vortex beam, and the size and sign of the topological charge are obtained according to the light intensity diagram. The size and sign of the topological charge of the Gaussian Schell mode vortex beam are analyzed through the light intensity diagram.

The embodiment of the invention belongs to the technical field of projection, and relates to a fluorescent wheel which comprises a transmission and diffusion area and a wavelength conversion area, and the transmission and diffusion area is used for transmitting and diffusing incident exciting light; the wavelength conversion area is used for converting the wavelength of the incident excitation light into excited light. The invention further relates to an optical machine comprising the fluorescent wheel and projection equipment comprising the optical machine. According to the technical scheme provided by the invention, the coherence of the transmitted exciting light is reduced while the excited light is obtained.