981 results about "Light flux" patented technology

A light emitting system includes one or more first light sources operable to illuminate an environment from a first angular range, one or more second light sources operable to illuminate the environment from a second angular range different from the first angular range, a device comprising a sensor, and one or more processors that determine ambient light properties and first light property values for a spatial zone in the environment using the sensor when directing the one or more first light sources to illuminate the environment, determine second light property values in the environment using the sensor when directing the one or more second light sources to illuminate the environment, and adjust the light flux output of the one or more first light sources and the one or more second light sources based at least on the ambient light properties and the first and second light property values.

The invention discloses a photoacoustic imaging method and a photoacoustic imaging system, and the method comprises the steps: obtaining the ultrasonic image data of an imaging target, and determining the biological tissue type of the imaging target based on the features of the ultrasonic image data; a luminous flux distribution result corresponding to the biological tissue type is determined, and the luminous flux distribution result is generated after a simulation target tissue corresponding to the biological tissue type of the imaging target is irradiated by laser in the simulation imaging process of the simulation target tissue; the light source is used for representing luminous flux distribution conditions of biological tissues relative to the body surface under different imaging depths; obtaining photoacoustic image data of the imaging target; determining compensation parameters of the photoacoustic image data based on the luminous flux distribution result; compensating the photoacoustic image data based on the compensation parameter to obtain compensated photoacoustic image data; and generating a photoacoustic image according to the compensated photoacoustic image data. According to the invention, the quality and precision of the photoacoustic image can be improved.

The invention relates to the technical field of photovoltaic modules, in particular to a photovoltaic module control method and device. The method comprises the following steps: obtaining an installation position according to design data of the photovoltaic module, carrying out illumination intensity change measurement, and further evaluating the luminous flux change of the photovoltaic module; on the basis of the luminous flux change data, calculating the generating capacity fluctuation of the photovoltaic module, further performing power quality attenuation evaluation, and extracting power grid transmission voltage fluctuation data; according to the power grid voltage fluctuation and power quality attenuation data, the battery overcharge condition and the battery life attenuation are evaluated, the battery capacity attenuation is further calculated, and the photovoltaic module system efficiency attenuation is evaluated; by analyzing system efficiency attenuation data, photovoltaic module degradation risk early warning is carried out, and risk early warning information is fed back to the terminal in real time; according to the invention, through early warning of power generation of the photovoltaic module, the deterioration prediction of the photovoltaic module is more accurate.

The purpose of the present invention is to provide a more suitable floating-aerial-video display device. The present invention contributes to the sustainable development goals (SDGs): "3. Good health and well-being to all"; "9. Industry, innovation and infrastructure"; and "11. Sustainable cities and communities". This floating-aerial-video display device comprises: a display panel that displays a video; a retroreflective plate that reflects video light from the display panel and displays in the air an aerial floating video of a real figure by means of the reflected light; a light flux traveling direction change sheet that is disposed between the display panel and the retroreflective plate; and a video light control sheet that is disposed between the light flux traveling direction change sheet and the retroreflective plate.

The invention discloses a display backboard and a display device. The display backboard comprises sub-pixel units and a mirror current source module, each sub-pixel unit comprises a pixel driving circuit with an adjusting module and a light-emitting device, the mirror current source module is electrically connected with the adjusting modules in the pixel driving circuits, and the mirror current source module is used for adjusting adjusting current input to the adjusting modules. The adjusting currents input to the sub-pixel units with different colors by the mirror current source module are different; according to the invention, the mirror current source module connected with the adjusting module in the pixel driving circuit is arranged in the display backboard to adjust the adjusting current input to the sub-pixel units with different colors, so that the sub-pixel units with different colors drive the light emitting device to emit light with different driving currents. In this way, the light-emitting devices of different colors have preset light-emitting luminous flux, regulation and control of different gray scales are achieved in combination with a digital subfield scanning method, and full-color display of the display backboard is achieved under the existing clock frequency.

A portable device includes a plurality of individually addressable light sources configured to emit light into a plurality of angular bins toward an environment, an imager positioned to receive light reflected from the environment, and a processor configured to analyze one or more images captured from the imager and identify a spatial region corresponding to eyes of an individual in the environment, wherein one or more light sources of the plurality of individually addressable light sources is directed to not emit light or reduce a light flux output in one or more angular bins of the plurality of angular bins corresponding to the spatial region. The portable device may be a phone.

The invention discloses an optical fiber array automatic coupling mounting device which comprises a machine table, a coupling mechanism, a power supply mechanism, an optical feedback mechanism and a clamp mechanism capable of horizontally moving relative to the coupling mechanism are arranged on the machine table, and the coupling mechanism comprises a multi-axis degree-of-freedom adjusting frame. The front end of the multi-axis degree-of-freedom adjusting frame is provided with a clamping assembly used for clamping the optical receiving end of the optical fiber array. The optical feedback mechanism is provided with a sensor used for detecting the luminous flux of the optical fiber array light receiving end on the tube shell in the tube shell placing groove in the coupling process. The invention also discloses a coupling mounting method. By adopting the specific jig, the optical fiber arrays and the tube shells are clamped at one time, automatic coupling mounting of the optical fiber arrays and the tube shells can be carried out in sequence, the mounting efficiency is improved, meanwhile, the mounting position is adjusted for multiple times in a mode of combining visual positioning and luminous flux detection, and the mounting precision is ensured.

A light emitting system including a light emitting device having electronically controllable light output that can increase or decrease independently within a plurality of angular bins, an imager positioned to capture one or more images of the environment, and one or more processors configured to analyze the one or more images captured from the imager, identify an individual in the environment, identify one or more first angular bins of the plurality of angular bins corresponding to the individual, and direct the light emitting device to increase a light flux output within the one or more first angular bins.

A light emitting system includes at least one light emitting device configurable to emit light into an external environment, a controller configured to adjust a light flux output from the at least one light emitting device, and a non-transitory computer readable storage media comprising a plurality of parameters, the parameters including rules for prioritizing a first illumination mode or first irradiance mode over a second illumination mode or second irradiation mode that direct the at least one light emitting device to emit a first light flux into a first angular bin and a second light flux different from the first light flux into a second angular bin different from the first angular bin.

An emergency lighting device with an auto-dimming detection function and used in an inverter system is provided. After receiving sensing signals from a sensor, a control unit of an emergency lighting device outputs signals for control of a dimmer to carry out dimming of a light source and control output power. No matter how many light emitting diodes are mounted in a light emitting diode module of the light source, a battery is further controlled to maintain a fixed output current by control of light brightness of the light source. Thereby not only luminous flux of the light source can be calculated accurately, use and arrangement of the emergency lighting device are easier. Installation cost is significantly reduced and manufacturers can label service time of the device accurately. The emergency lighting device is safer and more convenient to use.

The invention discloses a flow-type Raman sorting method and a high-luminous-flux flow-type Raman sorting device, and the method comprises the following steps: carrying out coincident focusing on Raman laser and near-infrared laser captured by a light trap to form a Raman excitation detection site, and arranging the Raman excitation detection site at the tip of the outer end of a tail end electrode in a chip dielectric focusing electrode; the photo-thermal oscillation near-infrared laser is focused on a tail end electrode in a dielectric focusing electrode of the chip and does not coincide with a Raman excitation detection site; through switching of light trap capture near-infrared laser and photo-thermal oscillation near-infrared laser, a single cell sample is captured and fixed at a Raman excitation detection site through light trap capture force generated by the light trap capture near-infrared laser or bubbles are generated through a photo-thermal effect generated by the photo-thermal oscillation near-infrared laser; the cell sample adhered to the tail end electrode in the dielectric focusing electrode is oscillated and separated through the bubbles. Compared with the prior art, the device has the beneficial effects that the organic combination of optical trap capture and dielectric capture sample oscillation functions can be realized, the switching is convenient, flexible, rapid, simple and reliable in use, the instrument cost is greatly reduced, the application range of the instrument is effectively widened, and the device has very strong universality.

An LED filament lamp emits lamp light of a third correlated color temperature, CCT3. An LED filament light source emits LED filament light of a first correlated color temperature, CCT1, of a first light intensity, I1, and a first luminous flux, LF1. A transparent envelope at least partly encloses the LED filament light source. A further LED light source provides further LED light of a second correlated color temperature, CCT2, a second light intensity, I2, and a second luminous flux, LF2. The further LED light source provides the further LED light to the envelope. The envelope is a light emitting structure configured to emit the further LED light and to transmit the LED filament light. The lamp light thus comprises one or more of the LED filament light and the further LED light and CCT1≤2500K, 8000K≥CCT2≥3500K and 2≥LF1 / LF2≥0.5, wherein CCT1, CCT2 and LF1 / LF2 are chosen such that 3400K≥CCT3≥2600K.

The invention discloses an intelligent greenhouse system which comprises a glass greenhouse, a ventilation system, a heat exchange energy storage system and a sunshade system arranged at the top of the glass greenhouse. The heat exchange energy storage system comprises an underground water tank and a heat exchange pipeline assembly, a plurality of heat exchange air inlets are formed in the upper portion of the glass greenhouse, a plurality of heat exchange air outlets are formed in the lower portion of the glass greenhouse, and the heat exchange air inlets and the heat exchange air outlets are connected with the heat exchange pipeline assembly. The sun-shading system comprises a sun-shading plate assembly arranged above the roof of the glass greenhouse, and the sun-shading plate assembly automatically adjusts the luminous flux in the glass greenhouse according to the requirement of plant illumination. According to the intelligent greenhouse system, high temperature generated in the glass greenhouse can be stored in an energy storage mode, the temperature in the greenhouse can be reasonably adjusted, heat energy can be obtained, the whole greenhouse is more environmentally friendly and low in energy consumption, energy is saved, and the intelligent greenhouse system can form a self-circulation independent ecological system.

The invention discloses a super-resolution imaging system and a super-resolution method based on phase coding, which are used for improving the imaging resolution and the imaging signal-to-noise ratio of a visible light imaging system. The system is composed of an imaging main lens 1, a first 4f relay lens 2, a phase mask plate 3, a second 4f relay lens 4, a camera 5 and an electric rotating table 6, and a system transfer function has anisotropy on a certain frequency component by optimally designing a phase function of the phase mask plate. The phase mask plate 3 is controlled to rotate and regulate through the electric rotating table 6, a series of coded low-resolution images are collected through the camera 5, combined constraint iteration of the spatial domain and the frequency domain is combined, the collected images are reconstructed until algorithm convergence is achieved, and a reconstructed image breaking through Nyquist sampling is obtained. Compared with the method based on intensity mask coding, the method has the advantages that anisotropy regulation and control of the point spread function can be realized under the condition that luminous flux is not lost, and the imaging resolution is improved by more than 2.5 times.

The scanning optical system includes: a deflector; and an imaging optical system having a first scanning lens closer to the deflector and a second scanning lens farther from the deflector. The scanning direction is a direction perpendicular to the rotation axis of the deflector and the optical axis of the imaging optical system, the value obtained by dividing the half value of the scanning width by the maximum value of the deflection angle [theta] is defined as a system focal length f, and the distance from the deflection surface of the deflector to the scanning surface on the optical axis is defined as L, when the distance from the deflection surface to the surface of the second scanning lens farther from the deflector is defined as d, 0.88 < = f / Ld / L < = 0.3 is satisfied, the scanning direction is defined as the Y-axis direction, the y-coordinate of the optical axis is defined as 0, and the y-coordinate of the position of the principal ray of the light flux on the scanning surface is represented by a function of a deflection angle [theta], the y-coordinate of the position of the principal ray of the light flux on the scanning surface is defined as a function of a deflection angle [theta]. The absolute value of the differential function dy / d [theta] of the function increases with the absolute value of the deflection angle [theta], and the differential function dy / d [theta] has a plurality of inflection points in the ranges of-1 < = r < =-0.4 and 0.4 < = r < = 1, respectively, where r is the ratio of the deflection angle to the maximum value of the absolute value of the deflection angle [theta].

The invention discloses an optical flux-inductance-energy integrated system and a transmitted waveform design method, and the method comprises the steps: carrying out the MLS modulation and OFDM modulation of an input original signal, obtaining an MLS waveform and an OFDM waveform, carrying out the amplitude distribution of the two waveforms, and combining the two waveforms according to a time sequence to form an MLS-OFDM AC signal; after the alternating current signal is subjected to digital-to-analog conversion, outputting the alternating current signal according to a set driving peak-to-peak value voltage, superposing a direct current component in the alternating current signal so as to carry out alternating current and direct current amplitude distribution, and outputting an analog electric signal; the transmitter converts analog electric signals into optical signals, and the optical signals are simultaneously connected with the information decoding module, the sensing processing module and the energy collecting module. According to the hybrid MLS-OFDM waveform design scheme combining alternating-current amplitude distribution and alternating-current and direct-current amplitude distribution, flexible balance among communication, perception and energy collection performance in an optical flux-inductance-energy integrated system is achieved, the complexity of the system can be reduced, and the system is made to be lighter and more compact.

According to the embodiment, an optical apparatus includes an illumination optical element having a focal plane or a focal plane region including a vicinity of the focal plane; and a projection portion including a light source. The projection portion is configured to emit a light flux including light of at least two different wavelength spectra from the light source to the illumination optical element. The projection portion is configured to form a projection image at different positions by light of the two different wavelength spectra in the focal plane or the focal plane region of the illumination optical element.

The utility model discloses an agricultural sun-shading structure which comprises a sun-shading plate arranged on a roof, the roof is of a continuous up-and-down structure, a first supporting seat is arranged at the valley bottom of the roof, and the lower portion of the sun-shading plate is connected with the first supporting seat through a rotating shaft; a second supporting seat is arranged on the peak top of the roof, a winch assembly is arranged on the second supporting seat, the upper portion of the sun shield is connected with the winch assembly on the peak top on one side through a traction rope, and the upper portion of the sun shield is connected with the winch assembly on the peak top on the other side or a balancing weight through a traction rope. According to the agricultural sunshade system, the luminous flux in a room can be adjusted through the arrangement of the sunshade plate capable of being adjusted in a deflection mode, when the sunshade plate is located outside a greenhouse, under the condition that the illumination intensity requirement of plants is met, the sunshade plate can be controlled to shield sunlight so that the plants can be protected against excessive illumination damage, and the service life of the plants is prolonged. And meanwhile, the greenhouse can be cooled by shielding sunlight.

The invention discloses a detector nonlinear measurement device and method based on double laser light sources. The detector nonlinear measurement device comprises a first laser, a second laser, a chopping disc, a chopping controller, a first light trap, a second light trap, a gold-plated integrating sphere, a photoelectric detector, a lock-in amplifier and a computer. According to the method, nonlinear characteristic measurement of the detector in a large-value range can be realized, single-time and multi-time accumulative measurement is considered, and a corresponding calculation method is provided. In addition, the luminous flux is adjusted directly through the on-off of the double laser light sources, moving parts are reduced, and the measurement stability is better. By adopting a double-laser measurement method, an optical measurement system is remarkably simplified, and the influence of non-ideal factors such as light blocking of an optical filter is reduced. Meanwhile, the projection laser is reflected for multiple times through the gold-plated integrating sphere and then is uniformly projected to the photoelectric detector to cover the whole photosensitive surface, so that the nonlinear measurement error caused by the difference of the light uniformity of the photosensitive surface is avoided.

This method for calculating curvature of an arbitrarily defined range of an optical element includes: a step (a) for obtaining a lateral vector s of an element number n representing a local curvature distribution in an arbitrarily defined range of the optical element; and a step (b) for, when an average spherical power in a prescribed light flux range within an arbitrarily defined range is defined as a macro curvature c, calculating the macro curvature c without using wavefront information in the arbitrarily defined range by using a weighting vector w with which an approximate expression of c ≈ wsT is satisfied.

Methods, devices and systems are described that enable improved determination of wavefront errors associated with light traveling through turbulent media, such as through the atmosphere. The described systems use a Rayleigh-Raman polychromatic laser guide star (RRPLGS) to measure the tilt at the wavelength of observation by making use of the dispersion of the refractive index of air and differential tilt measurements at multiple combinations of wavelengths based on the Rayleigh and Raman back-scattered light. The described RRPLGS systems have a number of advantages, including scalability of returned flux and flexibility in selection of short wavelengths, allowing for a combination of multiple tilt measurements, and enabling characterization of the turbulent media without relying on photons from the object of interest.

An air floating video display apparatus includes: a video display configured to display a video; a retroreflection plate; an imager; and a controller, a light flux reflected by the retroreflection plate forms an air floating video, the controller can set a virtual position of a 3D model, the video display displays a video, a video for stereoscopic viewing is displayed in the air floating video as a real image, and the virtual position of the 3D model set by the controller is a position shifted relative to a position of the air floating video which is a real image formed in air, in a direction opposite to a traveling direction of principal ray when the light flux reflected by the retroreflection plate forms the air floating video.

The invention relates to the technical field of virtual reality optical systems, and discloses an optical system control method for reducing VR dynamic blurring, which comprises the following steps: arranging an independent liquid crystal light valve in a light path of a display panel, and judging the motion state of a user according to the motion angular velocity of the head of the user acquired by an inertial measurement unit; when the display panel is in the static micro-motion state, the light valve is controlled to be continuously opened, and when the display panel is in the dynamic operation state, the light valve is controlled to execute one-time pulse type switching operation in each frame display period, the image generation function and the time domain luminous flux control function are structurally separated, so that the display panel can concentrate on efficient imaging; and meanwhile, the external light valve accurately inhibits dynamic blur, the inherent contradiction between power consumption and brightness in the prior art is effectively avoided, and the environmental adaptability of the system and the comprehensive experience of a user can be remarkably improved through closed-loop self-calibration and multi-sensory cooperative control.

The invention discloses a backlight module preparation method and device. The backlight module preparation method comprises the steps that LED test light bars are arranged according to the model size of a display module; adjusting a driving electrical parameter of the LED test light bar to enable the display of the whole machine to reach a target color point value, and obtaining a first electrical parameter; working current data of a single LED lamp bead is calculated according to the first electrical parameter, and luminous flux and color coordinates of various LED lamp beads are obtained; constructing a colorimetric mixing formula and calculating a white light color point theoretical value of the backlight module; and according to the theoretical value of the white light color point, in combination with the pre-selected wavelength of the blue light chip, the fluorescent powder and the glue type, obtaining the proportion of the fluorescent powder, and preparing the backlight module according to the proportion of the fluorescent powder. The whole machine is tested in advance, and the target color point value of the white light LED device is calculated according to the test data, so that the preparation accuracy of the white light LED device is improved, repeated test verification is avoided, the development period of a liquid crystal display is shortened, and the development cost is effectively reduced.

The utility model relates to the technical field of X-ray tubes, in particular to an X-ray tube with high-stability luminous flux, which comprises a tube shell, a cathode assembly, an anode assembly and a window assembly, and is characterized in that the anode assembly comprises an anode cap, an anode rod and an anode target assembly; the anode cap comprises an expansion part, a partition part and a necking part which are sequentially connected in the axial direction of the anode cap, the expansion part wraps the focusing piece from the bottom and the circumferential direction of the focusing piece, an electron beam incidence hole is formed in the partition part, and a packaging cavity extending in the axial direction and an X-ray outlet penetrating in the radial direction are formed in the necking part; the potential of the anode assembly is higher than that of the cathode assembly; along the axial direction of the X-ray tube, the distance H between the bottom of the focusing part and the top of the expansion part is greater than the distance D1 between the bottom of the focusing part and the partition part, so that stray electrons and secondary electrons generated by the stray electrons and overflow electrons and secondary electrons generated by the overflow electrons are absorbed after repeated back bombardment in the expansion part, and the secondary electrons are completely prevented from bombarding a tube shell, thereby improving the efficiency of the X-ray tube. And the high stability of the X-ray luminous flux is ensured.

According to one aspect of the present invention, a pattern inspection apparatus includes: an imaging sensor including a plurality of first detection elements that detect light flux transmitted through or reflected by a target object illuminated with inspection Light and capture a pattern image of the target object, and a plurality of second detection elements that are arranged adjacent to the plurality of first detection elements, detect Light fluxes obtained by shifting a focus position of the light flux front side and rear side, and capture images for focus adjustment; an adjustment mechanism configured to adjust a focal position of the light flux by using the images for the focus adjustment captured by the plurality of second detection elements; and a comparison circuit configured to compare the pattern image captured by the plurality of first detection elements and a predetermined reference image.

This invention relates to the field of optical imaging and detection technology, specifically providing a broadband snapshot-type polarization interferometry imaging detection system and method for breast tumors. A broadband light source illuminates a breast tumor tissue sample. The reflected signal light is collected and collimated by a pre-optical system, then sequentially passes through a first and a second ray shaping unit for two shearing and two polarization state transformations, resulting in two beams of linearly polarized light and two beams of circularly polarized light. These beams are imaged by an imaging lens to an area array detector to obtain a polarization interferogram, which is then demodulated to obtain all Stokes parameters of the breast tumor tissue sample. This invention achieves broadband snapshot imaging of breast tumors with all Stokes parameters without using an analyzer, doubling the light throughput compared to traditional polarization imaging instruments using analyzers. Furthermore, this invention has advantages such as compact structure, no moving parts, easy assembly and adjustment, and no need for image registration.

The invention discloses a reversed polarity light-emitting diode and a manufacturing method thereof, the reversed polarity light-emitting diode comprises a semiconductor laminated layer, the semiconductor laminated layer is provided with a mesa structure, the mesa structure comprises a top surface and a side wall surface, the reversed polarity light-emitting diode further comprises a side wall Bragg reflector, a light-emitting diode chip and a light-emitting diode chip, the first electrode is arranged on the surface of the side wall of the semiconductor lamination layer; and an under pad Bragg reflector disposed between an N-side electrode on the top surface and the semiconductor stack. By constructing the three-dimensional reflection structure, the problems of side wall light loss and electrode bonding pad shading in the prior art are solved at the same time, and the light extraction efficiency, the total luminous flux and the light emitting uniformity are remarkably improved.

The invention relates to the technical field of property intelligent management, and provides a collaborative optimization intelligent lighting system dynamic energy scheduling method, which comprises the following steps: constructing an energy concentrator network of an intelligent lighting system, abstracting lighting equipment of a plurality of projects into an energy concentrator model, wherein each energy concentrator describes a conversion relation between electric energy and luminous flux through a coupling matrix; a multi-objective optimization function with maximization of the electric energy utilization rate as the core is established, the multi-objective optimization function integrates comfort, equipment and power grid constraints, and dynamic configuration is carried out based on operation parameters of the energy hub network; solving the multi-objective optimization function by adopting a two-stage optimization process, generating a reference operation plan and performing rolling correction; and issuing a dynamic dimming control signal to each lighting terminal through an energy concentrator network based on the optimized scheduling instruction obtained by solving so as to cooperatively schedule the electric energy of the intelligent lighting system. Therefore, the cross-region and multi-project intelligent lighting system is optimized in a collaborative manner, and the energy utilization rate is improved.

The invention discloses a spectral analysis device and method for gas Raman scattering of a hollow-core optical fiber, and belongs to the technical field of gas analysis sensing. The spectrum analysis device comprises a laser, a light beam coupling device, a hollow-core optical fiber gas sample chamber, a collecting device and a spectrograph which are sequentially arranged along a light path, the light beam coupling device is used for coupling excitation laser generated by the laser into the hollow-core optical fiber gas sample chamber; to-be-detected gas flows in the hollow-core optical fiber gas sample chamber, excitation laser is conducted, and a transmission light beam containing the excitation laser and Raman scattering light is output; the collecting device is used for separating excitation laser in the transmission light beam and outputting a light beam only containing Raman scattering; a small round hole is formed in an inlet of the spectrograph, spatial filtering is carried out, and the luminous flux lost when a light beam enters the spectrograph is reduced; and the spectrometer receives the Raman scattering to obtain the Raman spectrum of the gas to be detected. The luminous flux lost when the light enters the spectrograph is reduced, the light beam collection efficiency is improved, and the signal-to-noise ratio and the analysis sensitivity are improved.