238 results about "Continuous light" patented technology

The invention relates to the technical field of angle-resolved photoelectron spectroscopy experimental instruments, and discloses an angle-resolved multi-electron coincidence measurement system and method based on an event-type delay line detector, and the system comprises an angle-resolved energy analyzer; a detection surface of the event type delay line detector is divided into at least two independent areas, and the event type delay line detector is used for receiving photoelectrons in parallel and independently outputting event signals; the external trigger and synchronization module is used for generating a unified trigger period to establish a global time reference; the time digital reading module is used for receiving the event signal and generating a timestamp; and the data acquisition and processing module is used for carrying out association judgment and selection based on the timestamps in the same triggering period. The dead time is reduced through multi-region parallel reading, unified time base calibration is achieved through time base line calibration and delay compensation, multi-electron coincidence measurement can be achieved under the condition that the angular resolution capability is kept, and the method is suitable for pulse or continuous light sources.

The invention discloses an electronic brake system of a fishing reel, and belongs to the technical field of fishing gears. The system comprises a side cover, an adjusting drive plate, a brake adjusting execution assembly, a supporting cover plate, a coil base, an electric control board and a wire cup assembly, wherein the electric control board integrates an optical detection module, a conductive detection module and a control unit; a stop block of the brake adjusting execution assembly and an adjusting drive plate move synchronously, a conducting circuit and a conducting contact can be selectively conducted through a conducting layer on the bottom face of the brake adjusting execution assembly, discrete electric signals identifying gears are output, meanwhile, the shielding degree of the stop block on an optical path of the optical detection module changes continuously, and continuous light sensation analog signals are formed. And the control unit locks the gear according to the discrete electric signal, and responds to the light sensation analog signal to realize stepless regulation of the braking force in the same gear. The device adopts dual-mode cooperative detection, has the characteristics of no mechanical wear, high precision and strong interference resistance, is compact in structure and controllable in cost, effectively improves the casting stability of the fishing reel and the user experience, and is suitable for various fishing reels with precise brake requirements.

The invention belongs to the technical field of 3D printing, and particularly relates to a continuous pulse mixed type patterning laser powder bed light path system and method.Laser powder is preheated to be close to a melting point but not molten through set continuous-period light emitting, the preheated laser powder is completely molten through pulse-period light emitting, and in other words, the continuous pulse mixed type patterning laser powder bed light path system and method are obtained; continuous light is only used for preheating powder for a short time, so that the powder is close to a melting point but not molten; then peak energy is rapidly provided through microsecond pulsed light, powder melting is completed instantly, in this way, the effective heating time is shortened, the heat radiation range of heating is controlled, the heating time of a system is far shorter than the heating time of traditional continuous light, melting and solidification are completed when heat is not diffused out of a preset pattern in time, and the production efficiency is greatly improved. Therefore, the fusion area is limited within the pattern range, the subsequent part forming precision is improved, and laser loss caused by too high peak power due to short time is reduced through pulse light emitting and continuous light emitting.

A spectral linewidth adjusting method includes: adjusting a timing of a first trigger signal for amplifying and converting a portion of a first pulse laser beam to a second pulse laser beam and / or a timing of a second trigger signal for amplifying and converting a portion of second continuous light to a third pulse laser beam and adjusting a spectrum of a fourth pulse laser beam obtained by performing sum-frequency mixing of the second and third pulse laser beams to a first spectrum in a non-Gaussian shape; and modulating a wavelength of the second continuous light within time corresponding to one pulse of the third pulse laser beam and adjusting the spectrum of the fourth pulse laser beam to a second spectrum having a spectral linewidth wider than the first spectrum through generation of a modulation signal for supplying the modulation signal to an optical phase modulator.

The invention provides a broadband linear frequency modulation microwave source based on ultra-short external cavity modulation light feedback, and relates to the field of microwave photonics. Continuous light generated by the main semiconductor laser is injected into the slave laser after being adjusted, so that the slave laser works in a periodic oscillation state; the slave laser, the electro-absorption modulator and the reflector are integrated to form an ultra-short outer cavity, and the intensity of feedback light is regulated and controlled by an external signal source so as to realize linear scanning of cavity mode frequency. After beam splitting of light output from the laser, one path forms a long external cavity feedback stable signal through the adjustable optical fiber delay line, and the other path outputs a target signal after beat frequency of the photoelectric detector and filtering of the band-pass filter. A high-speed modulator and a high-frequency microwave source are not needed, the broadband advantage of a photonics scheme is reserved, the frequency sweeping bandwidth is further improved to 60 GHz or above, the center frequency and the frequency sweeping range are independently adjustable, the structure is simple, cost is low, integration is easy, and the device is suitable for scenes such as photoelectric radars.

The utility model relates to a noctilucent algae feeding and breeding display cabinet which comprises a cabinet frame and a display cylinder, the cabinet frame is cubic, and the display cylinder is located in the middle of the cabinet frame. The top surface of the display cylinder is open, an illuminating lamp and a liquid dropping device are fixedly arranged at the top of the cabinet frame, the liquid dropping device comprises a liquid storage box, a pump machine and a liquid dropping head, a liquid dropping opening of the liquid dropping head corresponds to the open surface of the top of the display cylinder, the liquid dropping head is connected with a liquid outlet of the pump machine through a pipeline, and a liquid inlet of the pump machine is connected into the liquid storage box through a pipeline. An existing water body stirring scheme is replaced with a liquid dropping stimulation mode, so that the stimulation force is easy to control, local continuous light emission of the noctilucent algae can be maintained, the continuous ornamental effect is achieved, long-time waiting is not needed, and the ornamental effect is good. In addition, by matching with an illuminating lamp, breeding and breeding operation of the noctilucent algae is facilitated, that is, the display cylinder can be used as a culture cylinder at the same time.

The present disclosure is a light reflection measurement device including: a first light source for outputting first continuous light; a second light source for outputting second continuous light as local light; and a signal processing unit for performing digital signal processing on a light reception signal I(t) obtained by multiplexing reflected light that is obtained by irradiating a measurement target with one branched light of the first continuous light, reference light that is the other branched light of the first continuous light, and the local light, in which the signal processing unit calculates an autocorrelation function between the light reception signal I (t) and a light reception signal I (t+τ) obtained by shifting the light reception signal by time τ, and measures reflection on the measurement target by using a position of a peak of the autocorrelation function.

The application discloses a passive dual-mode tactile sensor and a preparation method thereof, and belongs to the technical field of optical sensing and flexible tactile sensing. The sensor comprises a flexible support substrate, an elastic composite film containing long-afterglow light-emitting particles, micro-nano optical fibers embedded or attached to the surface of the elastic composite film, a flexible packaging layer, and an optical signal detection unit. When an external target approaches, the target surface reflects the scattered light, changes the output light intensity of the micro-nano optical fiber, and realizes non-contact sensing. When the external target contacts or presses, the composite film produces stress-induced luminescence enhancement and interface coupling change under the action of stress, and realizes contact force tactile sensing. The preparation method comprises light-emitting composite layer forming, micro-nano optical fiber taper preparation, interface coupling integration and packaging curing. The application has the advantages of no need for continuous light supply, compact structure, anti-electromagnetic interference, easy flexible integration, and suitability for human-computer interaction application.

The application discloses a kind of magnetically responsive hydrogel optical fiber and its preparation and application, belong to medical biomaterial field.The optical fiber includes from inside to outside: polyethylene glycol diacrylate and acrylamide photocrosslinking light transmission core layer;Calcium alginate low refractive index skin layer;Doped nano-magnetic response layer of ferriferrous oxide;And polydopamine grafting polyvinylpyrrolidone lubricating layer.It is prepared by coaxial extrusion and light / calcium step-by-step crosslinking.The structure realizes the spatial isolation and anti-interference of light transmission and magnetic drive, has low background light loss and anti-bending stability, has biomechanics matching, ultra-low friction and magnetic field accurate active navigation ability, solves the pain point that extremely soft optical fiber is difficult to directional intervention.Suitable for deep tissue precise photothermal therapy, in vivo continuous optical sensing and minimally invasive diagnosis and treatment integration and other frontier medical fields.

This invention discloses a closed-loop optical architecture for suppressing stray light at the source of a light source, relating to the field of lighting optics design technology. The invention includes a light-emitting source and a mounting substrate, with an enclosing structure matched to the outer periphery near the light source. A continuous light-absorbing surface is formed on the inner side of the enclosing structure, corresponding to the lateral stray light overflow path of the light source, used to constrain lateral diffuse light and stray light overflow. A forward light-emitting opening is reserved at the top of the enclosing structure to avoid obstruction of the main axial light path of the light source and maintain the integrity of the forward light-emitting path. The enclosing structure adopts a double-layer composite structure, realizing lateral light absorption and structural shaping functions respectively, and can adapt to various light source arrangements such as point light sources, linear strip light sources, and multi-light source combination modules. This invention, through the bottom-layer optical path structure design of near-end enclosing light control, achieves source suppression of stray light and glare without attenuating forward light emission.

Techniques for determining a phase delay of a received light signal are discussed herein. A vehicle may emit a continuous light signal from a ToF device. The ToF device may include a sensor receiver configured to receive the signal after the signal reflects off surface(s) in the environment. To determine the distance between the ToF device and the surface(s), the vehicle may sample the received signal at two or more offsets and identify regions of overlap between the offset signals and the received signal. The vehicle can determine area measurements of the overlapping regions and use such area measurements to determine normalized amplitudes for each of the overlapping regions and, based on comparing such values, determine linear equation(s) corresponding to the phase delay. The vehicle can evaluate such linear equations to determine the phase delay of the received light signal. The vehicle can be controlled based on the phase delay.

The optical module provided in the present disclosure comprises a MAC chip and an MCU. In order to control the optical module to enter a continuous light emission mode, the MCU comprises a light-emitting state register. When a register value of the light-emitting state register of the MCU is a first register value, the laser chip is instructed to enter the continuous light emission mode, and when the register value is a second register value, the laser chip is instructed to enter a burst mode. When the light-emitting state register value is set from the first register value to the second register value, the laser chip is switched from the continuous light emission mode to the burst mode; and when the light-emitting state register value is set from the second register value to the first register value, the laser chip is switched from the burst mode to the continuous light emission mode.

The application provides a demodulation system and method of a strong-weak fiber grating hybrid network, which comprises: an upper computer for generating an optical control signal, a modulation control signal and a signal collection signal; an optical signal generation unit for outputting a sweep continuous light signal in response to the optical control signal; a fiber splitter for dividing the sweep continuous light signal into a first continuous light signal and a second continuous light signal; a pulse modulation unit for modulating the first continuous light signal to obtain a pulse light signal in response to the modulation control signal; a weak fiber grating sensing module for generating a first electric signal based on the pulse light signal; a strong fiber grating sensing module for generating a second electric signal based on the second continuous light signal; and the upper computer for positioning and demodulating the first electric signal and the second electric signal in response to the signal collection signal. The application realizes the demodulation of the strong-weak fiber grating hybrid network by a single system, and can simultaneously perform a large-capacity, long-distance sensing task and a single-point sensing task.

The application discloses a lunar polar sun-synchronous path planning method and system based on deep reinforcement learning, relates to the technical field of path planning, and comprises the following steps: acquiring dynamic continuous illumination map data, performing definition processing on the dynamic continuous illumination map data based on a preset Markov decision process, obtaining a state multi-dimensional vector of a rover, inputting the state multi-dimensional vector of the rover into a pre-established rover agent, performing optimal path planning strategy learning based on a preset comprehensive reward function and a rover navigation control model, and outputting a trained rover agent; acquiring a real-time sensing state vector of the rover, inputting the real-time sensing state vector of the rover into the trained rover agent, outputting a global optimal action value, controlling the rover to perform based on the global optimal action value, and realizing the planning of a sun-synchronous path.

This invention relates to the technical field of photopolymer additive manufacturing, and specifically to a control system and method for continuous photopolymerization of multi-material composites. The system includes a control unit, a projection unit, and a composite molding execution unit. Since the composite molding execution unit is positioned above the projection unit, the Z-axis lifting module is perpendicular to the projection unit, and the X-axis translation module is connected to the Z-axis lifting module. This achieves physical isolation between the dual independent optomechanics and the material tank, continuous molding of functionally graded materials through dynamic parameters and multi-mode scheduling, and cross-tank collaborative control and interface strengthening treatment. The control method for continuous photopolymerization of multi-material composites of this invention, by achieving continuous printing of two materials through time-driven cross-tank collaborative control, improves the interfacial bonding strength of heterogeneous materials and increases printing speed, thereby solving the problems of poor multi-material compatibility, low switching efficiency, and low interfacial bonding strength.

This improves the degradation of the cross-correlation coefficient caused by the error between the set frequency and the actual frequency of the light source, and makes it possible to improve the degradation of the measurement accuracy of strain and temperature. [Solution] The light source unit has a frequency-stabilized wavelength-tunable laser that generates continuous light, and a first optical coupler splits the continuous light generated by the light source unit into two, sending one to a second optical coupler and the other to an optical frequency measurement unit. The optical frequency measurement unit measures the frequency of the continuous light generated by the light source unit, and the second optical coupler further splits the continuous light split by the first optical coupler into two, sending one as probe light to the optical pulse generation unit and the other as local light to a detection unit. The detection unit measures the frequency change Δf by means of coherent time domain reflectometry and a means for heterodyne detection of the Rayleigh scattered light and the local light resulting from Rayleigh scattering of pulsed light in the fiber under test. max and means for acquiring the

The invention discloses an optical nonlinear activator chip based on a graphene photoelectric device and a preparation method. Belongs to the technical field of photoelectric devices and optical signal processing. The chip comprises a detector optical path and a modulator optical path, a substrate is made of a standard SOI material, and the chip structurally comprises an optical coupling module, a waveguide, a graphene detector part and a graphene modulator part. The graphene detector and the modulator are integrated on the same chip, the detector is used for converting an input optical signal into a voltage signal, then the voltage signal is input into the modulator to modulate continuous light, and an optical signal after nonlinear conversion is output and used for a nonlinear activation unit of an optical neural network. Compared with a traditional nonlinear activator of a silicon-based integrated photon chip, the method gives full play to the advantages of excellent photoelectric property and easy integration of graphene, has the advantages of high integration level, high speed, low power consumption and the like, and has better compatibility with a silicon-based optoelectronic process.

An optical angle modulator includes: a first unit configured to generate first angle-modulated light and second angle-modulated light by performing angle modulation on continuous light using an electrical signal; and a second unit configured to generate third angle-modulated light by causing partially degenerate four-wave mixing of the first and second angle-modulated lights. A frequency band of the first angle-modulated light and a frequency band of the second angle-modulated light are different, and an angle of the second angle-modulated light decreases due to the electrical signal while an angle of the first angle-modulated light is increasing due to the electrical signal, and the angle of the second angle-modulated light increases due to the electrical signal while the angle of the first angle-modulated light is decreasing due to the electrical signal.

The utility model belongs to medical equipment technical field relates to a medical hard mirror external light beam guide, it includes protection pipe, light inlet part, light outlet part, protection pipe, light inlet part, light outlet part all are equipped with optical fiber silk in, optical fiber silk is continuous optical fiber silk, light inlet part is located one end of protection pipe, light outlet part is located the other end of protection pipe, one end of optical fiber silk is fused with one end of light inlet part. Through fusing one end of optical fiber silk with one end of light inlet part, make light inlet part and the connection of optical fiber silk more stable, high temperature resistance, and then improve its service life greatly.

The invention relates to the technical field of optical fiber communication, and discloses an optical fiber fault positioning device and method based on electric chaos and coherent detection.In the device, a narrow linewidth laser is used for generating continuous light, and a beam splitter is used for splitting the continuous light into continuous light carriers and local reference light; the electric chaotic signal generation module is used for outputting broadband chaotic electric signals; the optical modulation module is used for modulating a continuous optical carrier according to the broadband chaotic electric signal and outputting chaotic detection light; the optical coherent detection module is used for performing coherent frequency mixing on the echo signal and local reference light from the beam splitter and outputting a differential electric signal; and the signal processing module is used for performing cross-correlation operation on the broadband chaotic electric signal and the differential electric signal, and determining fault information in the optical fiber link based on a cross-correlation result. According to the invention, through fusion of electric chaos and coherent detection, a scheme with high resolution, large dynamic range, high stability and good integration potential is realized.

This application relates to the integration of microdevices into a system substrate. In the microdevice integration process, a donor substrate is provided, on which initial fabrication and pixellation steps will be performed to define microdevices, which include a functional layer, such as a light-emitting layer, sandwiched between a top conductive layer and a bottom conductive layer. The microdevices are then transferred to a system substrate for finalization and electronic control integration. The transfer can be facilitated in various ways, including providing a continuous light-emitting functional layer, breakable anchors on the donor substrate, a temporary intermediate substrate that enables thermal transfer techniques, or a temporary intermediate substrate with a breakable substrate bonding layer.

The application relates to the technical field of architectural design, in particular to a measuring device for architectural landscape design, which comprises a protective shell, a handle is fixedly installed at the top end of the protective shell, a plurality of symmetrical rollers are rotatably installed at the bottom end of the protective shell, a counter is fixedly installed on one side of the protective shell, a first measuring wheel is rotatably installed at the end of the counter away from the protective shell, and a pointer is installed on the rotating shaft at the center of the first measuring wheel. The measuring stability and precision under complex terrain are remarkably improved through the functions of double-measuring-wheel design, automatic light-reflecting strip pasting, intelligent roller pressing adjustment, cleaning and automatic cutting, the display mode of automatic pasting and continuous light strip boundary makes the measuring area more intuitive and clear, the traditional manual operation error is avoided, the efficiency and safety are taken into account, and the reliability and intelligent level of the architectural and landscape measuring work are improved as a whole.

In a light guide (1) for an optical cochlear implant, comprising a flexible substrate (3) elongated in a principal direction (2) from a proximal end to a distal end and comprising at least one light-guiding core (4) arranged on the substrate (3), extending in the principal direction (2) from an input end (19) at the proximal end of the substrate (3) over more than 50% of the length of the substrate (3) and terminating with its output end (5) in front of the distal end of the substrate (3), an input optic (18), which couples incident light in the principal direction (2) into the at least one light-guiding core (4), is formed as a single-piece continuous optical body onto the input end (19) of the at least one light-guiding core (4) and the substrate (3) in such a way thatthat the at least one light-guiding core (4) terminates with its coupling end (19) within the coupling optics (18) and is embedded in the coupling optics (18) for at least a minimum length along the principal direction (2), and / or an output coupling optics (6), which deflects light exiting from the output end (5) into a first transverse direction perpendicular to the principal direction (2), is formed as a single, continuous optical body onto the output end (5) of the at least one light-guiding core (4) and the substrate (3) such that the at least one light-guiding core (4) terminates with its coupling end (5) within the output coupling optics (6) and is embedded in the output coupling optics (6) for at least a minimum length along the principal direction (2). The minimum length is equal to the height of the core (4) above the substrate (3).

The invention belongs to the technical field of building construction materials, and relates to an energy-storage luminous catalytic composite coating as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, preparing a photocatalytic material; s2, preparing a long afterglow material; s3, preparing a composite material: dispersing a long afterglow material and a photocatalytic material in a solvent, performing ultrasonic treatment, adding tourmaline, stirring, drying, calcining, cooling and grinding to obtain the composite material; and S4, preparing the energy-storage luminous catalytic composite coating: mixing the composite material and the coating matrix, and shearing and developing to obtain the energy-storage luminous catalytic composite coating, according to the invention, a long afterglow material and a photocatalytic material are compounded and then form the energy-storage luminous catalytic composite coating with tourmaline and a coating matrix. The prepared photocatalyst has high durability, provides a continuous light source for a photocatalytic reaction, can prolong the photo-induced electron-hole recombination time and improve the degradation efficiency of automobile exhaust, and is used in tunnel construction.

The present disclosure belongs to the technical field of optical communications. Provided are an electro-optical modulator and an optical device. The electro-optical modulator comprises a light source and a modulation structure. The modulation structure is located on an emergent light path of the light source; and the modulation structure comprises a modulation layer, a first electrode, a second electrode and an electric-field forming layer, wherein the first electrode, the second electrode and the electric-field forming layer are used for generating an electric field on the modulation layer so as to change the carrier concentration of the modulation layer. By means of the present disclosure, the electro-optical modulator uses the modulation structure to modulate, into pulsed light, continuous light emitted by the light source, so that the modulation bandwidth of the electro-optical modulator is not affected by parameters of the light source itself, and the modulation bandwidth of the electro-optical modulator can thus be improved.

The invention provides an illumination lamp related to a red light wave band and a light emitting method related to the red light wave band. The illumination lamp related to the red light wave band has a continuous light emitting spectrum at the wave band of 650-810 nm. The illumination lamp comprises a chip or a chip and fluorescent powder which have emission peaks in the wave band range of 650-680 nm, the wave band range of 680-730 nm, the wave band range of 730-770 nm and the wave band range of 770-810 nm, so that the spectrum in the red light wave band is complemented, the actual light emitting effect of the illumination lamp related to the red light wave band is closer to the effect of sunlight, and the illumination effect of the illumination lamp related to the red light wave band is improved. And the healthy lighting requirement of people is met.

The line lamp comprises a lamp body, a light source plate, a lampshade and end covers, the light source plate is arranged in the lamp body, the lamp body is provided with an opening extending in the length direction of the lamp body, the lampshade is arranged on the opening, the two end covers are arranged at the two tail ends of the lamp body respectively, the tops of the end covers are provided with first oblique angles, and the first oblique angles are arranged close to the lampshade. A light reflecting piece is arranged on the end cover and used for reflecting the light rays refracted to the end cover. According to the line lamp capable of eliminating the dark area, the light-emitting dark area at the end of the line lamp can be eliminated, meanwhile, light emitted after the two line lamps are spliced is a complete continuous light ray, and the impression after the lamp is turned on is greatly improved.

This invention discloses a conjugated polymer photocatalyst, its preparation method, and its application in the photocatalytic synthesis of nitric acid, belonging to the fields of polymer materials and photocatalysis technology. The preparation method mainly includes: firstly, synthesizing the intermediate 2CzTPN-Br via a nucleophilic substitution reaction; subsequently, synthesizing the intermediate TBBA via esterification; and finally, copolymerizing the two via coupling polymerization to obtain the target catalyst. The preparation method of this invention is process-controllable, and the resulting catalyst does not require the participation of noble metals, exhibiting broad light absorption, high specific surface area, and excellent carrier separation efficiency. When applied to the photocatalytic synthesis of nitric acid, it can directly and efficiently convert nitrogen in the air into nitric acid under mild conditions of room temperature, air atmosphere, and water as a solvent, exhibiting excellent durability. After 324 hours of continuous light irradiation, the nitric acid yield can reach 4466.2 µmol g. ‑1 cat It has broad application prospects in the field of green synthesis.

The application discloses an optical signal inner circulation delay system based on electro-optic polarization modulation, comprising a signal light source, a first polarization beam splitter prism, a first electro-optic polarization modulator, a second polarization beam splitter prism, a second electro-optic polarization modulator, a third polarization beam splitter prism, a first full reflection mirror, a first lens, a first optical fiber collimator, a single-mode / multi-mode optical fiber, a second lens, a second optical fiber collimator and a second full reflection mirror, forming a ring-shaped light path. The length of the single-mode / multi-mode optical fiber and the high level duration of the modulation electric signal are adjusted, the repetition frequency and the pulse width of the output optical signal can be changed respectively, and therefore the application can also be used for converting continuous light into controllable pulsed light. The number of times that the signal light circulates in the ring-shaped light path can be controlled through the loaded electric signal, the delay time is flexibly adjusted, and the delay time range is expanded.

This utility model belongs to the field of clothing accessories technology and discloses an LED flashing button, including a button body and a connector. One end of the button body is connected to an LED light bead, and the end of the button body away from the LED light bead is provided with an electronic slot and multiple connection holes. A cover plate matching the electronic slot is detachably connected to the button body, and a temperature sensing element electrically connected to the LED light bead is connected inside the button body. This solution organically combines the LED light bead, the temperature sensing element, the needle, and the connector to construct an intelligent button device that can automatically respond to changes in human body heat and trigger light emission. It realizes the intelligent power-saving function of lighting up when wearing clothes and turning off when taking them off, avoiding the problem of continuous light emission and power consumption of traditional LED buttons. The overall product is both compact in structure and aesthetically pleasing and practical. It is suitable for multiple scenarios such as children's clothing, night sports equipment, and outdoor warning accessories, and has good market application prospects and promotional value.