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171 results about "Intensity control" patented technology

Intelligent glasses image adjusting system based on eye movement tracking and gesture fusion

The invention discloses an intelligent glasses image adjusting system based on eye movement tracking and gesture fusion, and relates to the technical field of intelligent equipment. A multi-modal sensing module is arranged to construct a multi-modal sensing layer to capture eyeball movement tracks and gesture actions; a fixation point prediction module is set to process a dynamic scene through a space-time attention mechanism to obtain a fixation point prediction area, a gesture semantic understanding module is set to process gesture actions based on a Transform architecture, and the gesture actions of a user are converted into image adjustment instructions. An image enhancement strategy setting module designs a multi-stage image enhancement strategy according to the fixation point prediction area and the image adjustment instruction, and sets a dynamic adjustment intensity control module to perform adaptive adjustment to obtain a dynamic adjustment intensity control result; an eye movement-gesture cooperative control module is arranged to provide an eye movement-gesture cooperative control mechanism to realize image area selection and parameter adjustment, and accurate image area selection and parameter adjustment are realized.
Owner:MINAMI ACOUSTICS LTD

Image watermark generation method based on potential space multi-scale feature modulation

PendingCN120655483ABiological modelsImage watermarkingWatermark robustnessImaging quality
The invention relates to a method for generating an image watermark based on potential space multi-scale feature modulation. The method mainly comprises a watermark residual embedding and extracting method based on potential space multi-scale feature modulation, a watermark intensity regulation and control strategy based on time sequence gating and a robust watermark end-to-end training framework based on potential space. According to the method, watermark information is fused by using a multi-scale structure in a potential space of a diffusion model, meanwhile, a time sequence gating strategy dynamically determines the embedding time step of a watermark by calculating the convergence degree of a potential vector, and the image quality and the watermark robustness are balanced. Sigmoid weighted noise prediction loss is introduced in the model training process, and denoising control over low time steps is enhanced. The method can be widely applied to scenes such as image generation, copyright identification and content traceability, and has good practicability and popularization prospects.
Owner:HUNAN UNIV

Differential nonlinear competitive super-resolution microscopy method and device

The invention discloses a differential nonlinear competitive super-resolution microscopy method and a differential nonlinear competitive super-resolution microscopy device. Light beams emitted by the same light source simultaneously irradiate the surface of a fluorescent sample. Wherein one light beam is focused on a sample after passing through a spatial light modulator to form a high-energy hollow light spot for generating a saturation effect; the other beam of light is modulated into time sequence light by an acousto-optic modulator, the time sequence light is focused on the sample to form a low-energy solid light spot, and signal light emitted by each scanning point of the sample is collected; and performing intensity control on the light intensity of the hollow light through a light intensity modulation device to obtain two nonlinear competition result images, and performing differential processing to obtain a super-resolution image. The device is simple and convenient to operate; on the basis of a competition mechanism of solid spots and hollow spots during sample fluorescence excitation, a high-resolution image can be obtained under low illumination light intensity by utilizing differential processing, and negative values of the differentiated image are greatly reduced.
Owner:ZHEJIANG NORMAL UNIV

Automatic inspection method and system for high-rise hyperbolic glass curtain wall based on unmanned aerial vehicle

The invention provides an unmanned aerial vehicle-based high-rise hyperbolic glass curtain wall automatic inspection method and system, and the system comprises an unmanned aerial vehicle, a data acquisition module and a controller. The data acquisition module is carried on the unmanned aerial vehicle and comprises an ultrasonic sensor array, an infrared thermal imager and an image acquisition module; the controller is used for performing time-frequency domain analysis on the reflected wave to obtain the signal intensity of the reflected wave; the controller performs temperature gradient calculation on the structural adhesive surface temperature distribution image to obtain temperature anomaly region features, obtains optical image textures according to the surface optical image, and outputs an inspection result according to the reflected wave signal intensity, the temperature anomaly region features and the optical image textures; generating an unmanned aerial vehicle flight path according to the three-dimensional model and the curvature parameter of the hyperbolic glass curtain wall, generating obstacle avoidance position information according to environment information set by the hyperbolic glass curtain wall, and updating the unmanned aerial vehicle flight path according to the obstacle avoidance position information; and controlling the unmanned aerial vehicle to automatically inspect the hyperbolic glass curtain wall according to the flight path of the unmanned aerial vehicle.
Owner:FAR EAST PHOTOVOLTAIC TECHNOLOGY (GUANGDONG) CO LTD +2

Full-color waveguide display method, system, medium and equipment based on liquid crystal polarizer grating and optoelectronic device

The invention relates to the technical field of waveguide display, in particular to a full-color waveguide display method, system, medium and equipment based on a liquid crystal polarizer grating and a photoelectronic device, and the method comprises the steps: training and discriminating path direction information through a generative adversarial network, and meanwhile, setting an abnormal amplitude node based on initial polarization amplitude setting and abnormal amplitude node regulation and control; a directional channel cluster with amplitude constraint is formed, directional consistency and intensity continuity of path aggregation are realized, and through channel load offset ratio extraction, stable block identification and correction current mapping processing, light guide channels with different response characteristics obtain refined driving intensity control in a signal excitation process, so that the light guide effect is improved. In combination with an input channel signal configuration mode of a decision tree algorithm, dynamic closed-loop linkage between a signal control state and a path output result is realized by constructing a multi-attribute classification path, setting output frequency and displacement amplitude parameters, executing excitation signal bit width matching and synchronously loading frequency parameters.
Owner:SHENZHEN SHUNYISHENG TECHNOLOGY CO LTD

Wearable phototherapy device

Embodiments of the present invention provide a wearable phototherapy device, comprising a flexible substrate supporting a plurality of light-emitting elements configured to emit therapeutic light of one or more wavelengths. The substrate conforms to a treatment surface and may be integrated into a mask, wrap, patch, or garment insert. A conductive thin-film layer with an integrated metal-grid structure limits current to the light-emitting elements. The elements are arranged in one or more treatment zones, each independently addressable to provide wavelength and intensity control. A connector assembly enables selective attachment and detachment of the substrate to a power and control module. The device provides uniform, targeted illumination for dermatological, cosmetic, or therapeutic applications while maintaining ergonomic comfort.
Owner:SHENZHEN KAIYAN MEDICAL EQUIP CO LTD +1

Visual inspection ignition intensity control system and method

The invention provides a visual inspection ignition intensity control system and method. The system comprises a sintering machine; the ignition furnace comprises a gas inlet pipeline and a burner connected with the gas inlet pipeline, and the burner is used for sintering materials on the sintering machine; the image shooting piece is used for collecting the image information of the color of the flame generated by the burner; the control terminal is used for receiving the image information collected by the image shooting piece and adjusting the internal flow of the air inlet pipeline according to the image information; according to the invention, the flame image in the ignition furnace is acquired through the image shooting piece, the flame image is analyzed through the control terminal, and the gas or air supply flow is automatically corrected according to the analysis result, so that the optimal roasting effect is achieved.
Owner:MCC NORTH (DALIAN) ENG TECH CO LTD

Multi camera image display

A vehicle includes at least one exterior facing camera and a viewing screen in communication with a controller. The camera includes a red green blue (RGB) imaging sensor and a near infrared (NIR) imaging sensor. An ambient light sensor is disposed on the vehicle and detects a magnitude of ambient lighting in an exterior environment. The controller stores instructions for: Receiving a RGB image from the RGB imaging sensor at a time t, receiving a NIR image from the NIR imaging sensor at the time t, and receiving a lumens value of the ambient light at the time t. Preprocessing the RGB image into a processed RGB image using one of a plurality of preprocessing techniques dependent upon the lumens magnitude of the ambient lighting. Fusing the processed RGB image and the NIR image into a single viewing image using a neural network. Displaying the viewing image.
Owner:GM GLOBAL TECHNOLOGY OPERATIONS LLC

Automatic high beam and low beam switching system and method for electric bicycle, electronic equipment and computer readable storage medium

The invention relates to the technical field of electric bicycle control, in particular to an automatic high beam and low beam switching system and method for an electric bicycle, electronic equipment and a computer readable storage medium. The automatic high beam and low beam switching system for the electric bicycle comprises a radar detection module, an illumination detection module, a control module and a bicycle lamp module. The radar detection module is used for detecting the distance of an obstacle in front of the electric bicycle and the movement state of the obstacle; the illumination detection module is used for detecting the illumination intensity of the external environment; and the control module is used for controlling the vehicle lamp module to turn on the low-beam lamp when the illumination intensity is lower than a preset illumination threshold value, and controlling the vehicle lamp module to switch the high-beam lamp and the low-beam lamp according to the distance of the obstacle and the motion state of the obstacle. The control module automatically controls switching of the high beam and the low beam based on the distance of the obstacle, the motion state of the obstacle and the illumination intensity, and dependence on manual operation of a rider is reduced.
Owner:AIMA TECH GRP CO LTD

Flow intensity control device, flow intensity control method and laser proton accelerator

The invention discloses a flow intensity regulation and control device, a flow intensity regulation and control method and a laser proton accelerator. According to the device, a beam positioning sub-device is connected with a flow intensity adjusting and controlling sub-device, and the beam positioning sub-device is used for arranging the flow intensity adjusting and controlling sub-device in a vacuum cavity of the laser proton accelerator and adjusting the position of the flow intensity adjusting and controlling sub-device in the vacuum cavity; the flow intensity regulation and control sub-device comprises a movable perforated plate, a fixed perforated plate and a flow intensity regulation and control module; the movable perforated plate and the fixed perforated plate are overlapped and have the same shape, size and through hole arrangement; and the flow intensity regulation and control module is used for regulating and controlling the one-way relative displacement of the movable perforated plate and the fixed perforated plate so as to change the flow intensity regulation and control state of the flow intensity regulation and control sub-device on the laser proton beam. According to the embodiment of the invention, the beam flux can be rapidly and accurately adjusted, and the flow intensity of the proton beam can be rapidly and accurately adjusted.
Owner:PEKING UNIV +1

Light induction cleaning equipment lighting system and application thereof

The invention relates to the technical field of cleaning equipment, and discloses a light-sensitive cleaning equipment lighting system and application thereof.The system collects ground illumination intensity in real time through an ambient light detection module, a control unit dynamically adjusts the brightness of a lighting module based on a nonlinear dimming algorithm, and multiple modes are divided according to the illumination intensity; and the cleaning parameters are linked to realize cooperative control. Meanwhile, the ground material identification module detects the ground reflection characteristics through an infrared reflection sensor, and the illumination strategies are optimized for high-reflection materials and low-reflection materials respectively. Experimental data show that compared with a traditional fixed brightness scheme, the system saves energy by more than 40%, the dark area dust recognition rate is improved by 60%, the glare intensity is reduced by 50%, the problems of poor environmental adaptability, low energy efficiency, single function and the like in the prior art are effectively solved, the system is suitable for intelligent cleaning equipment such as a sweeping robot and a handheld dust collector, and the cleaning efficiency and the user experience are remarkably improved.
Owner:SUZHOU DEYISHI CLEAN TECH

Device and method for controlling ultraviolet disinfection lamp

The invention discloses a device and a method for controlling an ultraviolet disinfection lamp. The device comprises a disinfection environment modeling module, a human body sensor, an illumination intensity sensor, a disinfection evaluator, a switch controller, an illumination intensity controller and a timer, the disinfection environment modeling module is used for modeling the working environment of the ultraviolet disinfection lamp to obtain a disinfection environment prediction model; the human body sensor is used for detecting personnel existence information in a working environment; the illumination intensity sensor is used for measuring an illumination intensity value of a working environment; the disinfection evaluator is used for evaluating the disinfection effect of the ultraviolet disinfection lamp to obtain an evaluation result value and switch control information; the switch controller is used for performing switch control on the ultraviolet disinfection lamp; the illumination intensity controller is used for controlling the illumination intensity of the ultraviolet disinfection lamp; and the timer is used for carrying out statistical processing on the turn-on time and the turn-off time of the ultraviolet disinfection lamp.
Owner:FIRST HOSPITAL AFFILIATED TO GENERAL HOSPITAL OF PLA

Mode-synchronized laser device and method for controlling same

A ring resonator (10) and a NALM (20) configured as a saturable absorption mechanism constitute a laser oscillator. A multiport BPF (12) is provided to a path through which light propagates in the laser oscillator, the multiport BPF (12) passing light in a prescribed band of the propagating light, and branching light outside of the prescribed band as monitoring light (L). A photodetector (1) detects the monitoring light (L). A control unit (2) controls the oscillation state of the light propagating through the laser oscillator on the basis of the intensity of the monitoring light (L), thereby controlling the mode synchronization of the light propagating through the laser oscillator.
Owner:SEVENSIX CO LTD

Decoration layered product, transfer sheet, decoration member, and movable body

To provide a decoration layered product having an excellent designability, which has a stereoscopic effect.SOLUTION: A decoration layered product 10 includes: a shaping layer 20 having a shaping surface 20a in which an uneven structure 25 is formed; and an intensity control layer 30 covering the shaping surface 20a. The decoration layered product 10 has a unit optical element 13. The unit optical element 13 reflect, refract and / or diffract light which entered into a front-side surface 11 of the decoration layered product 10, according to the uneven structure 25. In the unit optical element 13, a shaping surface 20a includes a plurality of inclined surfaces 26A. A plurality of inclined surfaces 26A are aligned in a direction which goes to a reference line L1, and are inclined towards the reference line L1. A standard deviation of pitch WA1 of the inclined surface 26A adjacent to the reference line is 5 μm or less; a standard deviation of height H26 of the inclined surface 26A adjacent to the reference line is 1 μm or less; the inclined surface 26A adjacent to the reference line is a plurality of inclined surfaces 26A that are located adjacent to the reference line L1 and are continuously aligned toward the reference line L1.SELECTED DRAWING: Figure 4
Owner:DAI NIPPON PRINTING CO LTD

Optical transmission system

Intensity control units 40A and 40B acquire the intensity of backscattered light when inputting signal light of two or more modes for each core in a multicore optical fiber 10, which has two or more cores and in which two or more modes propagate to each of the cores, so that the transmission direction of light differs between adjacent cores, and output a control signal for reducing the input optical power of a high-order mode other than a basic mode of the signal light by a predetermined amount so as to reduce the influence of the high-order mode on the basic mode.
Owner:NT T INC

Head-up display capable of preventing sunlight from flowing backwards, method for preventing sunlight from flowing backwards and vehicle

The invention relates to the technical field of head-up display equipment, particularly provides a head-up display capable of preventing sunlight from flowing backwards, a method for preventing sunlight from flowing backwards and a vehicle, and aims to solve the problem that the blocking degree of sunlight cannot be adjusted according to the intensity of sunlight entering the head-up display in the conventional scheme for preventing sunlight from flowing backwards. In order to achieve the purpose, the head-up display comprises a shell, an image source and a curved mirror, the image source and the curved mirror are arranged in the shell, the shell is provided with a light outlet, and the head-up display further comprises a photosensitive sensor arranged in the shell and used for detecting the illumination intensity of light irradiating into the shell; the electrochromic film is arranged at the light outlet; the control module is connected with the photosensitive sensor and is used for acquiring the illumination intensity of the light irradiated into the shell; the control module is further electrically connected with the electrochromic film and used for adjusting the light transmittance of the electrochromic film according to the obtained illumination intensity. The head-up display can adjust the light transmittance of the inner electrochromic film according to the illumination intensity of the light incident to the head-up display.
Owner:NIO TECH ANHUI CO LTD

Lighting system

A connected lighting system that includes a substrate defining a broad face, a first set of light emitting elements, and a second set of light emitting elements. Each light emitting element of the second set of light elements may be configured to emit light having a fixed color parameter different from a first color parameter of the first set of lighting elements. The first and second sets of light emitting elements may be arranged at at least two different contiguous portions of the broad face of the substrate. A processor may be configured to control the first set of light emitting elements with a predetermined intensity and control relative intensities of one or more of the second set of light emitting elements to cooperatively emit light having a first color parameter value.
Owner:FEIT ELECTRIC CO INC

Battery device and electric equipment

The utility model discloses a battery device and electric equipment, the battery device provided by the utility model comprises a box body, a plurality of battery monomers, a deformation detection assembly and a control system, the box body is provided with a first accommodating space and comprises a first wall part; the plurality of single batteries are arranged in the first accommodating space; the deformation detection assembly comprises an emitter and a receiver, the emitter is used for emitting a detection light beam to the receiver along a preset transmission path, the first wall part deforms towards the outer side of the first accommodating space under the expansion action of the plurality of battery monomers, and the deformation direction of the first wall part intersects with the transmission path; at least after the deformation of the first wall part exceeds a preset degree, the transmission intensity of the detection light beam along the transmission path is changed; the control system is connected with the receiver and generates a deformation indication signal based on a detection signal of the receiver. Therefore, the control system can prompt that the deformation of the first wall part exceeds the preset degree, and the risk of misjudgment of the health state of the battery device is relieved.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD

INTENSITY CONTROL OF LEDS, CONNECTED TO A THREE-PIN SOCKET

A “light-emitting diode (LED - Light-Emitting Diode)” illuminator (100) configured to receive signals from a first input voltage line (120A) and a second input voltage line (120B), wherein the LED illuminator (100) comprises: an LED bank (155) with one or more LEDs; a detection circuit (220) configured to detect whether the first and second input voltage lines (120A, 120B) are active and to generate first and second detection signals (225A, 225B), wherein the first detection signal (225A) indicates the first input voltage and the second detection signal (225B) indicates the second input voltage; a decoding circuit (230) comprising a resistance divider configured to receive the first and second detection signals (225A, 225B) and, in response to a short circuit of various sections of the resistance divider, generates a DC voltage signal (235) based on the first and second detection signals (225A, 225B); and an LED control device (210) configured to detect whether the first and second input voltage lines (120A, 120B) are active and to provide a regulated current to the LED bank (155), wherein the LED control device (210) is configured to: Providing a regulated output current with a first level to a first part of the LED bank (155) in response to a detection that the first input voltage line (120A) is active and the second input voltage line (120B) is not active; Providing a regulated output current with a second level to a second part of the LED bank (155) in response to a detection that the second input voltage line (120B) is active and the first input voltage line (120A) is inactive, wherein the second part of the LED bank (155) at least partially overlaps the first part; and Providing a regulated output current with a third level to a third part of the LED bank (155) in response to a detection that the first and second input voltage lines (120A, 120B) are active, wherein the third part of the LED bank (155) at least partially overlaps the first and second parts; wherein the LED control device (210) is configured to detect, whether the first and second input voltage lines (120A, 120B) are active based on the DC voltage signal (235), wherein the LED control device (210) is configured to select one of the three levels corresponding to one of three values ​​of the DC voltage signal (235), and wherein the third level is greater than the sum of the first level and the second level.
Owner:RENESAS DESIGN NORTH AMERICA INC

Removable LED modules with regional intensity control

The present invention provides an LED module and a luminaire. The luminaire includes a controller and an optical system, the optical system having an adjustable optical element and an LED module, and an LED circuit board electrically connected to the controller. The LED circuit board includes an LED array arranged in two or more concentric zones, each zone including a plurality of LEDs. The intensity of the LEDs in the first zone is controlled independently of the LEDs in the second zone. The controller controls the intensity of at least the first zone based on the configuration of the adjustable optical element. The LED module can be removed from the luminaire by electrically disconnecting the LED circuit board from the controller and mechanically disconnecting the LED module from the luminaire without removing other elements of the optical system.
Owner:ROBE LIGHTING SRO

Planning method and system for realizing proton arc treatment

The invention belongs to the technical field of proton radiation therapy planning, and provides a planning method and system for realizing proton arc therapy, and the method comprises the steps: calculating the corresponding rotation speed of a rack during the delivery of each irradiation field beam spot based on a proton multi-field intensity modulated therapy plan; based on the calculation result, the angle distribution of the irradiation fields is optimized and adjusted, so that the rotation speed of the rack in each irradiation field is close to the constant speed, and the speed fluctuation is effectively reduced; and on the basis that the rack is approximately rotated at a constant speed, a self-adaptive beam intensity control system is designed, so that the rack is rotated at a constant speed in the whole treatment process. According to the technical scheme, the mechanical burden of the rack is relieved, the treatment time is remarkably shortened, the overall treatment efficiency is improved, and a new technical breakthrough and development direction is brought to the field of proton treatment.
Owner:XIEHE HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI & TECH UNIV

Vehicular display device

A vehicle display device, which emits display light from an opening toward a windshield and thereby allows a virtual image and a real image of a display image represented by the display light to be visually recognized, includes a display unit including a display element, transmitting light emitted by a light source, and displaying the display image, a reflection unit reflecting light representing the display image displayed on the display unit toward the windshield, and a control unit. The control unit executes light intensity control processing of controlling a light intensity of the light source in such a way that a real image display luminance setting when a real image is visually recognized and a virtual image display luminance setting when a virtual image is visually recognized have a predetermined luminance difference from each other.
Owner:NIPPON SEIKI CO LTD

Optical inspection device and control method therefor

PCT designated stageWO2026069603A1Using optical meansReference sampleLight beam
Provided are an optical inspection device capable of accurately obtaining the film thickness of a film covering a sample even when there is a difference in spatial intensity distribution between irradiation light to the sample and irradiation light to a reference mirror, and a control method therefor. The optical inspection device includes: a light source that emits light; a beam splitter that splits the light emitted from the light source into first irradiation light directed toward a sample and second irradiation light directed toward a reference mirror; an interference light measurement unit that measures interference light due to object light which is reflected light of the first irradiation light from the sample and reference light which is reflected light of the second irradiation light from the reference mirror; and a control unit that controls each unit. The optical inspection device is characterized by further including: an object light measurement unit that measures the intensity of only the object light; and a storage unit that stores the intensity of the object light of a reference sample measured in advance by the object light measurement unit. The control unit is characterized by obtaining the film thickness of a film covering an observation sample on the basis of the intensity of the object light of the reference sample and the intensity of the object light of the observation sample measured by the object light measurement unit.
Owner:HITACHI HIGH TECH CORP

Projection control method and device, projector and storage medium

The invention discloses a projection control method and device, a projector and a storage medium. The method comprises the following steps: calculating a light source intensity control parameter and a jitter ratio of a digital micromirror device according to a to-be-projected frame picture; when an acquisition time point corresponding to the frame picture to be projected arrives, acquiring a light source intensity control signal to obtain a light source intensity control parameter corresponding to the frame picture; when the issuing time point corresponding to the frame picture to be projected arrives, issuing a current control signal of the light source; and when the projection time point of the frame picture arrives, controlling the light source to emit light according to the current control signal, and controlling the digital microlens device to operate according to the jitter proportion so as to project the frame picture. In the application, the current control signal of the light source can change along with the change of the frame picture, so that the intensity of the current of the light source is smaller when the frame picture with lower brightness or black is projected, thereby reducing the energy consumption and the picture display effect of the projector, and improving the resource utilization rate of the projector.
Owner:APPOTRONICS CORP LTD

Sensor device and semiconductor processing apparatus using the same

A sensor device includes a lower substrate, an upper substrate disposed on the lower substrate, formed of a material different from a material of the lower substrate, and including a plurality of light-receiving regions disposed in different positions, a plurality of optical members disposed between the lower substrate and the upper substrate, and configured to be generated in a plasma formed in a space above the upper substrate and to provide a traveling path of light entering the plurality of light-receiving regions, a spectrum sensor configured to detect intensity of light received through each of the plurality of optical members in a predetermined wavelength band, a controller configured to generate raw data including intensity of light according to the wavelength band by matching the raw data with each of the plurality of light-receiving regions.
Owner:SAMSUNG ELECTRONICS CO LTD

Optical component for directly measuring original valence state, original form and original phase state of high-concentration liquid in real time

An optical component for directly measuring an original valence state, an original form and an original phase state of a high-concentration liquid in real time is provided, including a PLC control module, a monochromatic light purification module, a light intensity control module, a sensitivity adjustment module, and a multi-species perception module. Based on a monitoring requirement for different species, under the control of the PLC control module, the monochromatic light purification module emits monochromatic light. The light intensity control module adjusts light intensity of the monochromatic light. The sensitivity adjustment module adjusts attenuation of the monochromatic light. The multi-species perception module feeds back a measurement signal of the monochromatic light to the PLC control module.
Owner:TONGJI UNIV

Vehicular display device

A vehicle display device, which emits display light from an opening toward a windshield and thereby allows a virtual image and a real image of a display image represented by the display light to be visually recognized, includes a display unit including a display element, transmitting light emitted by a light source, and displaying the display image, a reflection unit reflecting light representing the display image displayed on the display unit toward the windshield, and a control unit. The control unit executes light intensity control processing of controlling a light intensity of the light source in such a way that a real image display luminance setting when a real image is visually recognized and a virtual image display luminance setting when a virtual image is visually recognized have a predetermined luminance difference from each other.
Owner:NIPPON SEIKI CO LTD

Calibration device and method of ultraviolet wavemeter

The invention provides a calibration device and method for an ultraviolet wavemeter, and relates to the technical field of atomic filtering, and the calibration device comprises the steps: a tunable continuous laser generates narrow-linewidth continuous laser; the first non-polarization beam splitting prism performs beam splitting on the narrow-linewidth continuous laser to obtain first laser and second laser; the wavelength meter obtains a measurement wavelength value of the first laser; the second non-polarization beam splitting prism performs equal-proportion beam splitting on the second laser to obtain third laser and fourth laser; the first photoelectric detector obtains the first signal intensity of the third laser; the atomic light filter absorbs energy at the central wavelength of the fourth laser by using alkali metal barium steam in a metastable state and outputs fifth laser; the second photoelectric detector obtains the second signal intensity of the fifth laser; and the control system scans a preset wave band, records a plurality of preset wavelength values and ratios between the plurality of corresponding second signal intensities and the plurality of first signal intensities to obtain a transmittance curve, and calibrates the wavemeter according to the absorption peak position of the transmittance curve.
Owner:UNIV OF SCI & TECH OF CHINA

Photon intensity control method and device for bb84 decoy state quantum key distribution system

The application discloses a photon intensity control method and device of a BB84 decoy state quantum key distribution system, and relates to the technical field of quantum communication photon intensity control. The photon intensity control method comprises the following steps: detecting the photon intensity of the photon state of a first beam splitting ratio after beam splitting; determining the average photon number ratio of the photon state according to the photon intensity of the photon state and the trigger number of the photon state; determining the control signal of the photon state according to the average photon number ratio of the photon state; and controlling the photon intensity of the photon state of a second beam splitting ratio after beam splitting in response to the control signal of the photon state, so as to control the photon intensity of the photon state of the second beam splitting ratio of the BB84 decoy state quantum key distribution system. The photon intensity control method can accurately control the photon intensity of the signal state, the photon intensity of the decoy state and the photon intensity of the vacuum state, and improve the feedback control precision.
Owner:BEIJING ACAD OF QUANTUM INFORMATION SCI

Head-up display device and method for controlling the intensity of a light beam

A head-up display device comprises: - a housing (2); - an image generation unit (4) housed in the housing and configured to produce a light beam (L); and - an optical system housed in the housing (2) and configured to transmit the light beam (L) through a window (16) formed in the housing (2), the optical system comprising at least one element (8) having a face (9) configured to reflect at least part of the light beam (L). The element (8) is designed to transmit through itself a portion of the radiation incident on said face (9).The head-up display device includes an electronic measuring circuit (50) housed in the casing (2) and comprising a support (52), a first sensor (54) carried by the support (52) and arranged to measure ambient brightness outside the casing (2), and a second sensor (56) carried by the support (52) and arranged to measure the intensity of said portion of radiation transmitted through said element (8). Figure for the abbreviation: Fig. 1.
Owner:VALEO COMFORT & DRIVING ASSISTANCE