59 results about "Light flux" patented technology

This invention relates to the field of cultivation technology, providing a trellis lighting device and method for vine-type crops. The aforementioned trellis lighting device for vine-type crops includes: a fixing component, multiple clamping components, and a light source; the multiple clamping components are arranged sequentially along the height direction of the fixing component, each clamping component including a first clamping part and a second clamping part, the first clamping part engaging with the fixing component, and the second clamping part used to fix the vine; the light source is disposed on the fixing component, the light source facing the vine, and the light source is divided into multiple illumination zones along the height direction to provide supplemental lighting to different positions of the vine. This trellis lighting device for vine-type crops avoids the problem of difficulty in separating the trellis rope from the vine during vine pulling and the resulting difficulty in vine retrieval; simultaneously, it can provide supplemental lighting to corresponding positions according to the actual light intensity or effective luminous flux density at different positions of the vine, ensuring sufficient light at all positions of the vine and promoting good vine growth.

The embodiment of the application provides an optical particle counter, and relates to the technical field of counter processing. The application discloses an optical particle counter, which comprises a support cabinet and further comprises: a detection assembly fixedly installed at the lower part of the support cabinet; wherein the detection assembly comprises: a transmission pipe, and a transparent pipe is integrally formed in the middle part of the transmission pipe. According to the application, liquid samples flow into the transparent pipe section integrally formed in the middle part of the transmission pipe under the driving of the injection assembly, and when the particles in the liquid pass through the intersection point, the light intensity changes: smaller particles mainly cause light scattering signals, which are received and analyzed by a scattering sensor; larger particles block a certain proportion of light flux, forming light intensity reduction signals, which are recognized by a reduction sensor, and a first control board synchronously collects two signals and fuses data, so that particle size recognition, quantity counting and classification output are realized.

This invention relates to the field of lighting control technology, specifically disclosing an environment-adaptive LED constant current energy-saving control method. The method includes: arranging a dielectric-photoelastic sensing array, a magnetostrictive-leakage flux detection coil, and a broadband impedance spectrum detection unit on the phosphor encapsulation layer, the inductor core, and the output bus, respectively; simultaneously acquiring three types of timing signals; extracting dielectric-magnetic-electric coupling degradation feature vectors; inputting the feature vectors into an energy-saving-lifetime co-optimization model; correcting the target luminous flux based on the dielectric relaxation offset; constructing a core loss-efficiency mapping surface to solve for the minimum energy consumption operating point; generating a constant current target value offset sequence and a PWM chopper phase-frequency co-transfer strategy; and simultaneously adjusting the duty cycle, switching frequency, and gate impedance through a feedforward-feedback composite adjustment network, and feeding back the current ripple spectrum and dielectric relaxation offset to update the feature vector weights. This invention achieves multi-physics field co-sensing and energy-saving-lifetime co-optimization.

The utility model discloses a projection light cone structure and projection equipment, wherein the projection light cone structure increases the folding structure through the light entrance face of light cone, carries out twice reflection through the first incidence surface and the second incidence surface of the intercalation angle, and can change the slope of two incidence surfaces to adjust the reflection angle of light, realizes the optimization of the illumination distribution of light, and expands the adjustment range of light exit angle. Thus effectively reduce the optical expansion of light source from the light cone exit, reduce the luminous flux loss, improve the optical utilization.

Optical Flux Attenuation Device The present invention relates to an attenuation device (14) of a polychromatic optical flux around a wavelength of interest, the wavelength of interest being included in the wavelengths of the polychromatic optical flux, the polychromatic optical flux being collimated, the attenuation device (14) comprising: a Fabry-Pérot filter (20) formed of two semi-reflective plates spaced apart from each other, a control unit (22) of the Fabry-Pérot filter (20), the control unit (22) being adapted to: modify the spacing between the two semi-reflective plates so that the central wavelength of the Fabry-Pérot filter (20) is the wavelength of interest, and modify the inclination between the two semi-reflective plates to adjust the amount of polychromatic optical flux transmitted around the wavelength of interest. Figure for the abridged version: 1

The application relates to the technical field of optical detection, and discloses an intelligent spectrum adaptive detection system based on a programmable micro-mirror array, which comprises the following components: an optical path assembly; a programmable micro-mirror array; a spectrum sampling unit for collecting spectrum characteristic data of incident light in real time; a control unit for calling a target relative spectral response curve, controlling the light flux modulation degree of each wavelength corresponding region of the programmable micro-mirror array, obtaining a target spectrum intensity distribution curve, receiving an electric signal of the spectrum detection unit, obtaining an output spectrum intensity distribution curve of the system based on the electric signal, and feeding back and correcting the light flux modulation degree of the programmable micro-mirror array based on the target spectrum intensity distribution curve. The control unit modulates and feedback adjusts the light flux degree of the programmable micro-mirror array, so that the automation degree and the precision of measured optical information are improved.

The application discloses an energy-saving high ceiling lamp, which comprises an LED light source module and an optical lens, the optical lens is an integrated lens, a plurality of light transmission points on the integrated lens are distributed in multiple circles and are one-to-one matched with LED lamp beads on the LED light source module, the light emission angle is effectively controlled, and the light emission efficiency is maximally improved; the energy-saving high ceiling lamp further comprises a redundant constant current driving circuit, the redundant constant current driving circuit drives the LED light source module at 70%-90% of the rated working current, the junction temperature rise is effectively inhibited, the initial luminous decay is delayed, the effective service life of the lamp is significantly prolonged, and the operation and maintenance cost is reduced; the control chip is used for comparing the monitoring ambient illuminance received by the light sensor with a preset target illuminance threshold value, dynamically adjusting the driving current of the LED light source module through an adjustable constant current driving module according to a first compensation current value calculated by a luminous compensation module, realizing closed-loop automatic compensation of the LED luminous flux decay, and maintaining the light emission efficiency of the whole lamp.

The application provides a kind of tool notch detection method, device, equipment and readable storage medium, applied to defect detection technical field.The edge of rotating tool is detected in real time by using photoelectric sensor, wherein the edge of tool at least shields part of detection light path of photoelectric sensor, and tool detection signal output by photoelectric sensor is acquired in real time.The light flux of detection light path not being shielded by tool is positively correlated with tool detection signal output by photoelectric sensor, and the time corresponding to one rotation of tool is used as a period, the maximum extreme point and minimum extreme point in tool detection signal waveform are found in each period, and finally whether tool exists notch is determined according to the slope of line between maximum extreme point and minimum extreme point.It can be seen that the tool in rotating working state can be detected in real time by photoelectric sensor, whether tool exists notch can be quickly judged, and the accuracy of tool damage notch detection result is improved.

This invention discloses a variable stiffness tactile detection sensor for marine weld joints based on luminous flux modulation, belonging to the field of industrial inspection and tactile sensing technology. It includes: an integrally molded silicone body, a circular circuit board, a top rigid support, and an optical modulation assembly. The silicone body has an integrally molded central optical cavity, with a clamping cavity area formed outside the central optical cavity. The central optical cavity is surrounded by side walls and a lower wall, with the side walls connected to the outer wall of the silicone body via connecting sections. The circular circuit board is mounted at the lower part of the central optical cavity and has a light-emitting unit and multiple photosensitive units disposed thereon. The optical modulation assembly includes at least two polymer-dispersed liquid crystal films, which are arranged in the optical path area between the light-emitting unit and some of the photosensitive units to modulate the luminous flux distribution within the central optical cavity. The clamping cavity area is filled with particulate medium to form a particulate clamping variable stiffness structure. The top rigid support is mounted on the upper part of the central optical cavity and has a negative pressure connection interface communicating with the clamping cavity area. This enables the detection of multi-dimensional tactile features of the weld joints.

A lighting circuit for solid-state lighting, such as light-emitting diodes (LEDs), is configured to produce reduced visible flicker. The lighting circuit may accept time-varying input power, such as alternating current (AC) power or rectified AC power. Within the circuit, a plurality of LED light engines are grouped in sets. Some of the sets receive unaltered input power, while other sets receive input power that has been shifted in phase. The phases of the sets of LED light engines are coordinated such that, at any time during the power cycle, at least one set of LED light engines is illuminated, and the lighting circuit as a whole produces a substantially constant luminous flux over the entire power cycle. LED light engines from different sets may be grouped or clustered together on a printed circuit board such that, in the aggregate, they do not produce the illusion of movement during illumination.

The present application relates to the technical field of intelligent lighting scheduling, in particular to a city street lamp control system based on Internet of Things, which comprises: an operating condition acquisition module, a thermoelectric loss evaluation module, a light flux maintenance calculation module, a shielding discrimination module and a power regulation module.In the present application, the voltage and current characteristics of the city street lamp driving circuit are collected in real time, and the environmental reflection echo is demodulated, thereby constructing multi-dimensional perception data containing the internal thermoelectric stress of the device and the external space shielding state, quantifying the light source aging rate under high temperature and high current conditions according to the physical failure mechanism, accurately calculating the light flux attenuation degree in the whole life cycle and generating a dynamic power compensation strategy, intelligently identifying and isolating the invalid lighting direction shielded by the tree crown by using the spatial reflection intensity distribution, converting the power consumed by the invalid area into transferable redundant power and adding it to the key lighting area not shielded, and realizing directional compensation of light decay loss under the premise of strictly controlling the upper limit of the total power consumption of the whole lamp.

The invention relates to a method (1) for determining occlusions of the optics of a camera (18). According to the method, at least one first image (2) and one second image (2) are captured by the camera (18), wherein the first image (2) and the second image (2) have the same image area, the first image (2) is captured at a first time point, the second image (2) is captured at a second time point, and the second time point differs from the first time point. Then, an optical flux between the first image (2) and the second image (2) is determined and evaluated for a plurality of regions within the image area. Finally, it is determined whether a region from the plurality of regions corresponds to an occlusion of the optics of the camera (18), based on the evaluated optical flux for that region.

The application provides a high-stability liquid-cooled side-beam microfocus X-ray tube and a packaged X-ray tube. The high-stability liquid-cooled side-beam microfocus X-ray tube comprises a tube shell, a cathode assembly, an anode assembly and a window assembly. The anode assembly comprises an anode handle, an anode target, a sealed end cover assembly and a cooling assembly. The anode handle is a hollow structure and is provided with a liquid cooling cavity. The anode target comprises a target base part fixedly sealed at one end of the anode handle and a target material. The sealed end cover assembly is fixedly sealed at the other end of the anode handle. The cooling assembly comprises an anode liquid inlet pipe and an anode liquid outlet pipe both fixedly sealed to the sealed end cover assembly. One end of the anode liquid inlet pipe extends into the liquid cooling cavity, is adjacent to the target base part and is in communication with the liquid cooling cavity. One end of the anode liquid outlet pipe is in communication with the liquid cooling cavity. In this way, the cooling liquid directly impacts the target base part of the anode target, provides sufficient cooling capacity, so that the target material has higher power bearing capacity when used for microfocus, has higher light flux and higher stability.

This invention provides an intelligent detection and sorting system for fragile fruits, relating to the field of intelligent sorting technology. It includes: a first extraction module acquiring a multidimensional image stream over an unloaded time-series interval and calculating the local luminous flux spatiotemporal attenuation index; a second extraction module acquiring a multidimensional image stream over a loaded time-series interval and extracting the spatial micrometer-level amplitude response spectrum; a cross-domain coherence compensation module generating a hidden interface rheological feature matrix based on the local luminous flux spatiotemporal attenuation index and the spatial micrometer-level amplitude response spectrum; a decision module generating a sorting route instruction set based on the hidden interface rheological feature matrix; and an execution control module driving a physical sorting mechanism according to the sorting route instruction set. This invention restores high signal-to-noise ratio data through cross-domain compensation, eliminates systemic misjudgments caused by contamination through collaborative decision-making and a circuit breaker mechanism, and establishes a self-healing closed loop including fixed-point cleaning, improving equipment robustness and operational reliability without interrupting mainline operations.

This invention relates to the field of holographic display and optical measurement technology, specifically disclosing a brightness testing system and method for reflective hologram displays based on an integrating sphere. The method uses a single-wavelength laser, spatially filtered and collimated, incident at a specific angle onto a reflective hologram placed within an integrating sphere for reconstruction. The integrating sphere is used to integrate and collect the multi-angle, non-uniform light rays diffracted from the hologram, and a light trap is used to suppress the zero-order reflection background. System calibration is performed using a standard diffuse white plate, and the absolute diffraction efficiency of the hologram is finally calculated. This invention effectively solves the problem that traditional point measurement methods are difficult to accurately obtain the total diffracted light flux of a hologram, and is suitable for the quantitative evaluation of the brightness and efficiency of diffractive optical elements such as reflective holograms and volume holographic gratings.

A laser machining head includes: a first lens group in which laser light diverging from a light emitter enters and is concentrated; a second lens group to which the laser light having passed through the first lens group propagates; a third lens group that constitutes a lens group in which the laser light having passed through the second lens group propagates and forms an image of the light emitter; a fourth lens group in which the laser light having passed through the third lens group enters and is concentrated; a light flux conversion optical element that is disposed on an optical axis between the first lens group and the second lens unit and converts a beam mode of the laser light; a first mover that moves the first lens group in an optical axis direction; and a second mover that moves the third lens group in an optical axis direction.

Illuminated mirror comprising: • a mirror plate • a light source • a light-guiding lens • and a constructive profile characterized in that the light-guiding lens is designed to receive light from the light source, guide it within the lens and couple it out via at least one machined edge, wherein the edge is designed as a radially ground surface, and wherein the constructive profile arranges and shields the light source in such a way that direct light emission is essentially prevented and the luminous flux is selectively coupled into the lens, whereby the interaction of these elements along the mirror plate produces a narrow, uniform and visually volumetric line of light.

A high-throughput miniature Raman spectrometer, belonging to the field of spectroscopic analysis instruments, includes a laser module, an external optical path system, and a beam splitting system. The laser module comprises a narrowband laser module and a collimating mirror; the external optical path system includes a dichroic mirror, an aspherical lens, a stage, a long-pass filter, a cemented doublet lens, and a slit; the beam splitting system includes a collimating mirror, a blazed grating, a focusing mirror, and a linear charge-coupled device (CCD). By integrating the laser module and external optical path system with the beam splitting system, signal attenuation during fiber optic transmission is avoided; a large numerical aperture aspherical lens is used to achieve efficient sample excitation and signal collection; the cemented doublet lens converges the beam to the slit, reducing the optical path size and eliminating axial chromatic aberration; and the cascaded filtering structure of the dichroic mirror and long-pass filter effectively suppresses Rayleigh scattering interference. While maintaining resolution, the luminous throughput is significantly improved, offering low cost, high precision, and portability, making it suitable for fields such as food safety testing.

The application discloses a quantum dot-based low-reflection and low-escape-loss down-conversion film and a preparation method thereof. The film comprises a substrate and a gradient refractive index multilayer film. The refractive index of the multilayer film increases layer by layer along the thickness direction and towards the substrate. The multilayer film comprises an organic polymer matrix and quantum dots. The concentration of the quantum dots increases layer by layer along the refractive index increasing direction. The substrate is provided with a nano-pyramid structure with a tower top facing the multilayer film on the side away from the multilayer film. The gradient refractive index multilayer film and the nano-pyramid structure are provided. The gradient refractive index multilayer film structure can optimize the light conduction path. The nano-pyramid structure can increase the light flux of the photovoltaic cell surface at the interface between the down-conversion film and the photovoltaic cell, effectively reduce the escape loss in the light conduction process and the reflection loss at the interface between the down-conversion film and the solar cell, improve the light utilization rate, and prolong the service life of the cell.

This invention provides a packaged side-emission microfocus X-ray tube, comprising a cylindrical assembly and a liquid-cooled X-ray tube. The tube shell of the liquid-cooled X-ray tube is rigidly fixedly connected to the cylindrical assembly. The anode assembly of the liquid-cooled X-ray tube includes an anode stalk with an internal liquid-cooling cavity, and an anode inlet pipe and an anode outlet pipe, both communicating with the liquid-cooling cavity. A liquid pipe connection assembly is installed on the cylindrical assembly, comprising a liquid pipe connection plate, and an inlet connection pipe and an outlet connection pipe, both fixed to the liquid pipe connection plate. The inlet connection pipe is flexibly connected to the anode inlet pipe, and the outlet connection pipe is flexibly connected to the anode outlet pipe. The inlet connection pipe, anode inlet pipe, liquid-cooling cavity, anode outlet pipe, and outlet connection pipe are sequentially connected to form an anode liquid-cooling channel, which is isolated from the inner cavity of the cylindrical assembly. This application can independently circulate and cool the anode assembly, shortening the thermal equilibrium time of the anode assembly and generating X-rays with higher luminous flux and higher stability.

This invention provides a method and system for color correction of facial recognition images based on multispectral ambient light detection, belonging to the fields of image processing and computer vision technology. The method simultaneously acquires an initial facial image and an ambient light intensity sequence. It utilizes the spectral scattering difference between the epidermis and dermis to perform multidimensional decomposition of the image, separating the facial background image from the illumination interference image. Based on luminous flux characteristics, the interference image is decoupled into surface reflection and subcutaneous scattering images, and the incident light path is extracted. A facial undulation gradient is constructed from the background image, and a light decay mapping table is generated by combining it with the ambient light phase delay, thereby calculating the color difference compensation matrix. Subsequently, phase synchronization is performed using the spectral phase difference to obtain the target correction matrix. Finally, pixel spectral reconstruction is performed based on this matrix, and standard light source rendering is applied. This invention effectively eliminates the influence of complex illumination and significantly improves the color reproduction accuracy of facial recognition.

A surface light source device of the present invention includes a substrate, a plurality of light-emitting elements, a light flux controlling member, and a light diffusion plate. The light flux controlling member includes an incidence surface, a total reflection surface, and a refractive emission surface. 50% or more of light that is reflected by the total reflection surface reaches a surface on the substrate side within a distance of L / 2 from an intersection C1, where L is a distance between optical axes OA of the plurality of light-emitting elements, and the intersection C1 is an intersection of the optical axes OA of the light-emitting elements and the substrate.

The embodiment of the application provides an airport indoor light control method and system, which is applied to the field of airport lighting control technology, extracts the intensity, direction and rate of the disturbance of the flight display screen through spectrum decomposition and interframe difference, generates a disturbance propagation result, collects light signals reflected, refracted and scattered by glass curtain walls, metal parts and composite material plates, constructs a multi-medium light energy flux correlation matrix, generates a regional light flux cooperative change distribution, calculates the angle change rate and interference bandwidth intensity as feedforward input by using the boarding gate sensor array, superimposes the weighted illumination feedback error to form a composite control, and simultaneously identifies the adaptive matching compensation coefficient in the bridge approach stage, and performs three-degree-of-freedom scheduling on the light flux, illumination direction and beam divergence angle of the lighting unit. The application can effectively suppress the double interference of the screen dynamic picture and the moving light source of the airplane, and improve the stability and uniformity of the light in the waiting area.

The application discloses a relative photometry improvement method for an oversaturated detection image, belongs to the technical field of astronomical image photometry, and aims at solving the problem that the nonlinear truncation of the observed light flux is caused by the oversaturation of the gray value of a star in an existing astronomical image, and the systematic deviation exists in a classical relative photometry model in a star apparent magnitude estimation method. The method comprises the following steps: based on a point spread function model of saturation truncation, a mathematical relationship between the total light flux of a star and the observed light flux of the star in an astronomical oversaturated detection image is established; according to the mathematical relationship, a relative photometry improvement model is established; based on the observed light fluxes of a plurality of known stars and corresponding reference apparent magnitudes, an iterative optimization algorithm is adopted to iteratively optimize the relative photometry improvement model, and the optimal model parameter in the model is solved; and based on the optimal model parameter and the observed light flux of a target to be measured, the apparent magnitude estimation value of the target in the astronomical oversaturated detection image is obtained through the relative photometry improvement model.

The application provides a kind of gradually curved surface tapering optical waveguide wide-area spectrum acquisition coupling device and method, belongs to the optical technology field in front end of spectrum detection.The device includes wide-area light acquisition module, light flux compression and coupling module, multi-fiber parallel output module and mechanical support and coaxial alignment module;Wide-area light acquisition module contains big end input face, gradually curved surface tapering transition section and small end output face, for receiving wide-area spectrum radiation from spatial extended radiation source, and performing progressive spatial compression;Light flux compression and coupling module are used for shaping and converging the light beam;Multi-fiber parallel output module is used for remapping the light beam into linear light beam, and the shape of linear exit surface matches the incident slit;Mechanical support and coaxial alignment module are used for coaxially fixing each module.The application can efficiently capture and slit couple wide-area weak light signal without significantly increasing the slit width and system volume, and take into account spectral resolution and sensitivity.

This utility model discloses a wide-angle illumination fiber optic cable for ophthalmic surgery, belonging to the field of illumination fiber optic technology. The wide-angle illumination fiber optic cable for ophthalmic surgery includes an optical cable, a connector, a handle, and a stainless steel needle tube. The front end of the optical cable is connected to the connector, and the rear end is connected to the handle and the stainless steel needle tube. The front end of the stainless steel needle tube is located inside the handle. The optical cable includes an optical fiber and a coating layer. The end of the optical fiber extends from the coating layer and the rear side of the handle, forming an insertion part. The insertion part is completely fitted inside the stainless steel needle tube, and the end of the insertion part radially contracts inward to form a frustum shape. The ophthalmic surgery illumination fiber optic cable of this application has a wide beam diffusion angle, while the output luminous flux is no different from that of traditional optical fibers. This effectively enhances the illumination range inside the eye during ophthalmic surgery, increases the surgical field of view, reduces the blind spot of diseased tissue, and improves the safety of the surgery.

This invention relates to the field of ship defense technology and discloses a ship hull-side intelligent identification and follow-up acoustic-optical denial anti-piracy method and system. The method includes: scanning the sea surface using a wide-angle polarization visual sensor to extract target motion parameters and calculate a comprehensive threat index, identifying high-threat targets and initiating locking; calculating phase delay and strong light spatial distribution based on target location using phased array electronic scanning technology to establish a mechanically non-mechanically followed acoustic-optical beam locking system; extracting target torso posture and facial expression features during the attack process, calculating a biofeedback effectiveness index, and introducing a phase chaotic perturbation and optical flux frequency domain chaotic modulation model to randomly jump-modulate the acoustic wave phase and strong light frequency; and monitoring the comprehensive threat index in real time until the target moves away and the denial stops. This invention utilizes electronic follow-up to solve the mechanical lag problem and breaks through the target's psychological and equipment shielding through biofeedback and chaotic modulation, improving the reliability and deterrent effect of non-lethal ship defense.

The utility model provides a kind of floodlight based on spade tooth radiator process, it is related to LED lighting technical field, it is characterized in that, including: lamp body component, including spade tooth radiator;Its back is equipped with X type heat dissipation groove, side is fixed with the stainless steel baffle for enhancing structural strength;Lens component is detachably connected in lamp body component front end, including lens and face cover;Mounting bracket component is fixed on lamp body component;Power component, including driving power supply and connecting wire, the power component is fixed on mounting bracket component.The utility model is high-power floodlight, with high luminous flux output, with lighter, can completely replace traditional floodlight, with high heat dissipation efficiency, can effectively reduce the temperature of LED lamp pearl, product with glass, can be applied in more severe environment.