354 results about "Light flux" patented technology

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.

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.

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.

The invention discloses a pupil adaptive red light regulation and control method and system based on EC film and light source collaboration, and the method comprises the steps: obtaining a visible light image of the eyes of a user through an image collection module, and extracting a real-time pupil state parameter through an image processing module; meanwhile, the ambient light sensing module obtains ambient light intensity data. The cooperative control unit receives the parameters and generates a luminous flux control instruction set containing a first control instruction and a second control instruction based on a safety evaluation model. The first control instruction drives the electrochromic film assembly to change the light transmittance of the red light, and the second control instruction adjusts the luminous intensity of the red light source. Through cooperative control of optical attenuation of the electrochromic film and luminous intensity of the light source, the luminous flux entering the retina can be accurately regulated and controlled in real time according to dynamic changes of pupils, the problem of potential retina light damage risk caused by using a light source with fixed intensity is effectively solved, and the safety of red light irradiation application is remarkably improved.

The invention discloses a near BBL curve LED white light color mixing method, system and lamp, a first color temperature light source and a second color temperature light source are selected in a preset color coordinate area, and a color point range is determined for each of the first color temperature light source and the second color temperature light source based on calculation of an intermediate color temperature point light source color deviation value extreme value on a target light mixing path; and selecting the first color temperature light source and the second color temperature light source of which the color coordinates are located in the corresponding color point range, and adjusting the luminous flux output proportion of the two light sources for light mixing so as to form intermediate color temperature light. The problems that a multi-CCT light and color modulation product adopts two light sources, the color temperature and color tolerance between the two light sources cannot meet the requirements of customers, and the color deviation value of the light sources obviously deviates from a BBL curve are solved.

A light scanning apparatus according to the present disclosure includes a deflecting unit configured to deflect a light flux from a light source to scan a surface in a main scanning direction, and a first optical system configured to guide the light flux deflected by the deflecting unit to the surface to be scanned, in which a width of the light flux immediately before being incident on a first deflecting surface of the deflecting unit is smaller than a width of the first deflecting surface in a main scanning cross section, and only a part of the light flux incident on the deflecting unit is deflected toward the surface to be scanned by the first deflecting surface when the first deflecting surface is at a first angle in the main scanning cross section.

The invention discloses a large-view-field space detection optical lens. The large-view-field space detection optical lens comprises a front lens group, a diaphragm, a rear lens group and an image surface which are sequentially arranged from an object side surface to an image side surface, the front lens group filters incident light waves and forms an intermediate image; the diaphragm controls the luminous flux by adjusting the relative aperture of the diaphragm; the rear lens group amplifies the intermediate image, corrects aberration and performs optical imaging through an image surface; the front lens group comprises a first optical filter, a first negative meniscus lens, a first biconvex lens and a second biconvex lens which are sequentially arranged from a position far away from the diaphragm to a position close to the diaphragm; and the rear lens group comprises a first biconcave lens, a third biconvex lens, a fourth biconvex lens, a first positive meniscus lens, a second negative meniscus lens, a second positive meniscus lens, a third negative meniscus lens and a second optical filter which are sequentially arranged from the diaphragm to the image plane. The optical lens provided by the invention has the characteristics of circular light spot, large view field, low chromatic aberration, low distortion, high resolution and small form deviation of light spots in each view field.

The present application relates to the technical field of LED chip, and discloses a flip LED lamp bead and a preparation method thereof.The flip LED lamp bead comprises a support, an LED chip arranged on the support and a fluorescent glue layer; the support comprises a horizontally arranged substrate, the substrate is provided with a groove structure for placing the LED chip, the side wall of the groove structure and / or the bottom surface close to the side wall are provided with a welding material, and the welding point of the LED chip is arranged at the end edge of the LED chip; and the welding point of the LED chip is electrically connected with the substrate through the welding material.The present application can increase the welding area of the LED chip, reduce the risk of false welding, reduce the shielding of the light emitting surface of the LED chip, reduce the loss of the luminous flux of the LED lamp bead, and improve the luminous brightness and reliability of the LED lamp bead.

An optical element includes a first face having a first reflecting region where a part of a light flux incident from a predetermined direction is reflected in a first direction, and a first non-optical region where the light flux is not incident, a second face having a second reflecting region where another part of the light flux incident from the predetermined direction is reflected in a second direction different from the first direction, and a third face connecting the first non-optical region and the second reflecting region. The first non-optical region and the third face form an acute angle outside the optical element. The second reflecting region and the third face form an acute angle inside the optical element.

An apparatus including: a deflector deflecting a light flux from a light source to scan a surface in a main scanning direction; and an imaging optical system including first and second optical elements, and guiding the light flux deflected by the deflector to the surface. When sagittal shapes of an incident surface and an exit surface of each of the first and second optical elements are represented by the following equations:x=z2 / r′1+(1-(z / r′)2)1 / 2+∑n=18∑m=01⁢6Mm⁢n⁢ym⁢znr′=r⁡(1+∑i=11⁢6Ei⁢yi)in at least one of incident surface or exit surface of first optical element and each of incident surface and exit surface of second optical element, at least one of values of Mmn is not equal to 0 provided that m is not equal to 0, and incident surface and exit surface of second optical element have M01 of the same sign.

The invention relates to a lamp maintenance method and device, an illumination control system and a lamp. The method comprises the steps of collecting environmental parameters of a lamp, predicting the degradation trend of a light source and an optical lens of the lamp according to a preset period based on the environmental parameters, obtaining a total luminous flux prediction result, determining a health index of the lamp according to the total luminous flux prediction result, and triggering lamp maintenance operation matched with the health index based on the health index. By adopting the method, the degradation speed of the lamp performance can be effectively delayed, the overall service life of the lamp is prolonged, and the intelligent, refined and sustainable operation and maintenance level of an illumination system is comprehensively improved on the premise that the illumination quality and safety are guaranteed.

Provided is a light scanning apparatus wherein each of optical surfaces of an imaging optical element includes an effective portion on which a light flux traveling toward an effective region of a scanned surface is incident, and two non-effective portions provided on both sides in main scanning direction of effective portion, wherein, when each of a change in a sagittal line tilt amount and a change in a sagittal line curvature in main scanning direction on at least one of optical surfaces is represented by a function, at least one of functions is continuous and is not infinitely differentiable at a predetermined position on each of two non-effective portions, and wherein, with respect to at least one of sagittal line tilt amount and sagittal line curvature, an absolute value at a first end of non-effective portion on a side opposite to effective portion is smaller than that at predetermined position.

The invention relates to the technical field of optical module automatic test equipment, and discloses optical module automatic test equipment, which comprises an adsorption carrying table, and the adsorption carrying table is rotationally arranged on a machine base through a rotation driving part; the product carrying mechanism comprises a product moving module and a vacuum suction nozzle connected to the output end of the product moving module; the probe card testing mechanism comprises a first moving module, a visual detection module connected to the output end of the first moving module, probe plates symmetrically arranged on the two sides of the visual detection module and a plurality of probes arranged on the probe plates; the optical fiber alignment testing mechanism comprises a second moving module, an optical fiber posture adjusting assembly connected to the output end of the second moving module and an alignment optical fiber connected to the output end of the optical fiber posture adjusting assembly, and an optical fiber tube of the alignment optical fiber faces the product and is used for collecting light emitted by the product to achieve luminous flux detection.

The application discloses an LED lamp light mixing method and a light mixing circuit, which can solve the problem of color gamut waste caused by the mismatch between the color gamut of an app and the color gamut of a whole lamp while ensuring high color accuracy, and ensure the accuracy of the monomial quadratic function current calibration algorithm, so as to avoid the error of the monomial quadratic function current calibration algorithm caused by constant luminous flux; the cross multiplication algorithm is used to select the light mixing light source, improve the algorithm efficiency, reduce the MCU algorithm power requirement, and avoid the problem that the target color point cannot calculate the corresponding light source current proportion due to the fixed color gamut through the dynamic color gamut.

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 invention relates to the technical field of adaptive control, and discloses an intelligent illumination control method and system based on tunnel partition brightness gradient gradual change. The method comprises the steps that a millimeter wave radar sensor and an infrared correlation sensor collect a train distance observation value and a speed observation value, a position state quantity and a speed state quantity are obtained through weighted sliding window filtering, and the position state quantity is compared with boundary coordinates of five lighting sections to obtain section numbers; and substituting the speed state quantity into a cumulative luminous flux integral formula according to the section number to obtain a physiological integral state variable, reversely calculating a target brightness level by taking a difference between the physiological integral state variable and a target threshold value as an integral gap, and converting the target brightness level into a PWM duty ratio to drive an LED lamp array to output partitioned gradient brightness. The adaptive response precision of tunnel lighting control to different train speeds and individual visual physiological differences of different drivers is improved.

A light scanning apparatus according to the present disclosure includes a deflecting unit deflecting a light flux from a light source to scan a surface in a main scanning direction, a first optical system guiding the light flux deflected by the deflecting unit to the surface to be scanned at a first timing, and a second optical system guiding the light flux deflected by the deflecting unit to a light receiving element at a second timing different from the first timing, in which the second optical system includes a first optical element which has a diffracting surface and condenses the light flux deflected by the deflecting unit at the second timing in a main scanning cross section, and a value of a diffractive power of the first optical element is equal to or larger than a value of a refractive power thereof in the main scanning cross section.

The light guide (110) includes a body (120) having a substantially plane exit surface (112) and an entrance surface (122) configured to capture an incident light flux (F106) emitted by a light-emitting diode (106). The entrance surface (122) includes a central face (124) astride a median plane (M120) and, on each side of the median plane (M120), a first lateral face (131) and a second lateral face (132), so that the incident light flux (F106) is divided into three distinct light fluxes. The body (120) further includes external reflecting faces, each configured to reflect light fluxes associated with each lateral face toward the exit surface (112).

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.

The application relates to a light-sensing detection structure and a mobile lighting device. The light-sensing detection structure comprises a head part bin, a metal substrate arranged in the head part bin, a lens, a light-shielding bowl and a light sensor. The metal substrate, the lens and the light sensor are fixed in the head part bin, and the metal substrate is located between the lens and the light sensor. The light-shielding bowl is fixed on the metal substrate and located between the metal substrate and the lens. In the light-sensing detection structure, a light inlet hole is arranged outside the projection of the light-shielding bowl on the metal substrate along a light inlet direction, and the light sensor senses external brightness through the light inlet hole. The light-shielding bowl can resist outgoing light and prevent the outgoing light from escaping and entering the light inlet hole. The incident light can enter the light inlet hole through the gap outside the light-shielding bowl and be received and detected by the light sensor. Since the light-sensing detection structure does not have other obstacles to block the outgoing light, the light-sensing detection structure has the advantages of large light flux and high light emission rate in cooperation with the irradiation of the light emitter, can irradiate a complete light spot around, and has a better lighting effect.

The invention discloses a preparation method of a semiconductor structure, the semiconductor structure and an image sensor, and the method comprises the steps: providing a main body structure, forming a first patterned film layer on a first surface of a first substrate layer of the main body structure, a plurality of groove structures exposing the first surface are formed in the first patterned film layer; forming an oxide layer on one side, deviating from the first substrate layer, of the first patterned film layer, wherein the oxide layer covers the side wall of the groove structure; and etching the first substrate layer by taking the patterned film layer deposited with the oxide layer as a mask so as to form a light trapping structure on the first substrate layer, the light trapping structure comprising a plurality of light trapping holes which are densely distributed in a hexagonal manner. The light trapping hole in the light trapping structure formed by the mode has the characteristics of small size and high density, and the light trapping structure has low reflectivity to light, so that the image sensor formed by adopting the semiconductor structure is good in luminous flux and excellent in performance.

To provide a lighting device or the like capable of suppressing a chromaticity difference during dimming.SOLUTION: A lighting device 40 includes a plurality of LED packages 42 which emit two or more kinds of light having different chromaticity values, and each first graph shape showing a relationship between a relative total luminous flux and a relative current of each of the plurality of LED packages 42 is equivalent in an actually supplied current range.SELECTED DRAWING: Figure 4

The invention discloses a controllable luminous flux device for a camera shooting buckle of an optical endoscope, and relates to the technical field of optical endoscopes. The device comprises a camera shooting buckle main body, a variable aperture mechanism, a driving assembly, a feedback control assembly, an image sensor sealing bin, a handle and a cable, the camera shooting buckle body is matched with an optical endoscope through a standard C buckle, the variable aperture mechanism is arranged between the image sensor sealing bin and the camera shooting buckle body and is integrally designed, and the center of an aperture of the variable aperture mechanism is of an eccentric structure. The feedback control assembly outputs a regulation and control instruction to the driving assembly through a PID algorithm based on a brightness signal of the image sensor, the driving assembly drives the aperture of the variable aperture to change, and brightness homogenization is achieved in combination with the sealing environment of the image sensor sealing bin. The device can regulate and control the luminous flux in real time, avoids insufficient or excessive exposure of the image sensor, is adaptive to various medical academics, reduces medical process repetition or waiting in the use of the optical endoscope, and improves the image acquisition quality and the diagnosis and treatment efficiency.

Disclosed in the present invention is a short-range optical potentiometer module, comprising a potential base body provided with a key slot, and a potential key which is mounted inside the key slot and can be displaced up and down, wherein a reset member for resetting the potential key is also arranged inside the key slot, an optical pair transistor composed of a photosensitive element and a light-emitting element is arranged inside the potential key, the optical pair transistor can be displaced up and down along with the potential key, a key base is internally provided with a fixed grating corresponding to the optical pair transistor, the reset member is sleeved on the grating, and the grating is configured such that the flux of light received by the photosensitive element from the light-emitting element changes along with the up-and-down displacement of the potential key, thereby causing an electrical signal generated by the photosensitive element to change along with the displacement of the potential key. The module of the solution uses non-contact photoelectric elements, thereby greatly increasing the service life; when the change in flux of light at the same distance is adjusted, the overall height of the module is close to or the same as the height of a potential base body; and the module has a skillful overall structure layout, can be conveniently assembled and replaced, and has strong practicality.

Provided is a three-dimensional information acquisition device that enables observation by compensating for a missing portion of an image. The three-dimensional information acquisition device comprises: a lens array (110) that is disposed so as to face an object (1) and in which a plurality of lens elements (112) are disposed in a matrix; a light receiving unit (142) that receives, on an imaging surface, a light flux passing through the lens elements; an imaging unit (120) in which a plurality of imaging elements (125) for receiving the light flux are disposed in a matrix on the light receiving unit (142) so as to correspond to each of the plurality of lens elements; a housing unit (145) in which gaps (140, 141) are formed in each of a surface of the lens array on which the lens elements are disposed and a surface of the light receiving unit so as to be oriented toward the object, the housing unit (145) forming a space that tubularly connects the gaps each other ; and an information processing unit (150) that processes optical information acquired by the imaging unit for each imaging element.