468 results about "Integrating sphere" patented technology

The invention discloses a device and a method for testing a MicroLED wafer array. The device comprises a wafer slide holder, a MicroLED test device and a photometric integrating sphere, a MicroLED wafer is arranged on the wafer slide holder; the MicroLED wafer is provided with a MicroLED wafer array, and the MicroLED wafer array is provided with a plurality of The MicroLED wafer array is composed of a plurality of MicroLEDs which are distributed in an array form; the MicroLED test equipment comprises a flexible electrode and a TFT (Thin Film Transistor) addressing circuit; the wafer slide holder is used for enabling a MicroLED wafer to be aligned with the MicroLED test equipment so as to enable the MicroLED to be lightened, and visible light emitted after the MicroLED is lightened is transmitted to the photometric integrating sphere through the MicroLED test equipment; the photometric integrating sphere is used for testing optical parameters of the MicroLED; the optical parameters comprise optical power and wavelength; and the TFT addressing circuit is used for providing current, voltage and position parameters of the MicroLED. According to the device and the method, the optical parameters and the position of each MicroLED in the MicroLED wafer array can be rapidly tested in a lossless and high-throughput manner.

The invention provides a flexible transparent display screen detection method, and belongs to the technical field of screen detection, and the method comprises the steps: carrying out a light transmittance dynamic attenuation test through optical detection equipment in a bending state of a to-be-detected flexible transparent display screen, and constructing a light transmittance attenuation image; stripping the to-be-tested flexible transparent display screen layer by layer by using a laser stripping technology, and quantifying the light transmission loss of each layer based on an integrating sphere system; point position analysis is carried out on the light transmittance attenuation image based on the light transmission loss, the abnormal attenuation point position is determined, the real use condition can be simulated to carry out layered detection on the flexible transparent display screen, and the detection accuracy is improved.

The invention discloses a brightness calibration method, system and device based on an industrial camera. The brightness calibration method, system and device are used for determining the brightness of a shot object through camera shooting parameters. The method comprises the following steps: obtaining the exposure time and working distance of an industrial camera and the brightness of a standard integrating sphere light source; respectively determining a first relational expression, a second relational expression and a third relational expression corresponding to the influence of the exposure time, the working distance and the brightness of the standard integrating sphere light source on the average gray value of the image data through the control variables; and integrating the first relational expression, the second relational expression and the third relational expression to obtain a brightness conversion model.

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.

The invention discloses a comprehensive measurement system for a two-photon fluorescent material. The comprehensive measurement system comprises a laser, a tunable attenuator, a beam splitter, a reference light integrating sphere, a reference light spectrograph, a focus lens, a test light integrating sphere, a test light integrating sphere, a transmission light integrating sphere, a transmission light spectrograph, a stepping motor controller, a computer and the like. By means of the comprehensive measurement system, comprehensive measurement of multiple key performance parameters of the two-photon fluorescent material is achieved, the accuracy and reliability of measurement are improved, and powerful technical support is provided for research and application of the two-photon fluorescent material.

The invention discloses a photoelectric backscattering high-concentration sand meter based on an integrating sphere. The photoelectric backscattering high-concentration sand meter comprises a light source module, the integrating sphere, a photoelectric detector and a processing circuit, the light source module is used for providing a light source for photoelectric sand measurement, and emergent light of the light source enters liquid to be measured through a light inlet of the integrating sphere; the integrating sphere is used for collecting backscattered light generated by particles in liquid to be detected; the photoelectric detector is used for detecting the backward scattered light; and the processing circuit is used for processing the electric signal detected by the photoelectric detector and calculating the particle concentration of the liquid to be detected. According to the invention, the back scattering light is collected through the integrating sphere, and reliable detection of the 180-degree back scattering light is ensured, so that high-concentration sand measurement can be carried out. According to the invention, testing hardware equipment and optical equipment are simple, the concentration of the suspended particles is measured by using 180-degree back scattering signals, the measurement accuracy is high, and the measurement range is large.

The invention discloses a biological tissue optical characteristic parameter automatic detection device based on a single integrating sphere, and relates to the technical field of biological tissue optical characteristic parameter measurement, the biological tissue optical characteristic parameter automatic detection device comprises a light source module, a sample conveying module, an integrating sphere module, a front end cover shading module and a rear end cover shading module, a light source module is arranged at a position close to one side of a front end hole of the integrating sphere, a rear end cover shading module is arranged at a corresponding position close to one side of a rear end hole of the integrating sphere, a detection optical fiber is electrically connected to an upper hole of the integrating sphere, one end of the detection optical fiber is electrically connected with a spectrograph, and the other end of the detection optical fiber is electrically connected with the spectrograph. The motion control box and the spectrograph are both in control connection with the upper computer PC. By using the rotating platform and the automatic sample clamping device, under the condition that only one integrating sphere is needed, the reflectivity, transmittance and collimation transmittance spectrums of the sample and the reference spectrum of the sample are collected, the detection precision of sample tissue optical parameters is improved, and the detection efficiency is improved.

The invention relates to the technical field of illuminometer calibration, and discloses a calibration device and a calibration method of an illuminometer for measuring medium and low illuminance. The calibration device comprises an integrating sphere assembly, a light source control module, a reflecting plate adjusting module, a spectrum monitoring module and a calibration execution module. A plurality of fixing holes are formed in the integrating sphere assembly, the light source control module achieves stable light intensity output through a dynamic current distribution algorithm and PID closed-loop control, the reflecting plate adjusting module compensates edge light attenuation through a self-adaptive positioning algorithm, and the spectrum monitoring module evaluates spectrum stability through a spectrum matching algorithm. And the calibration execution module adopts a nonlinear error correction algorithm to improve the calibration precision. The calibration method comprises the steps of initializing the device, adjusting the height of the reflecting plate, collecting data to generate a calibration curve, correcting errors, testing at multiple angles and the like. According to the invention, the defects of the traditional calibration technology can be effectively overcome, and the calibration precision and reliability of the medium and low illumination illuminometer are improved.

A lidar system for simultaneously measuring the column concentration of methane and the profile concentration of water vapor in the atmosphere is disclosed. The device includes a laser emission module: a 1645nm monoline seed laser, a 1645nm offline1 seed laser, a 1645nm offline2 seed laser, a 1064nm pump laser, a laser frequency-locking module, an optical parametric oscillator, a frequency doubling module, and emitting optical components; an echo receiving module: an integrating sphere module, an optical receiving telescope assembly, a beam splitter, filter assembly 1, filter assembly 2, photodetector 1, and photodetector 2; and a data acquisition and processing module. This invention utilizes the frequency doubling relationship between the absorption lines of methane and water vapor to simplify the complex structure of a dual-band, multi-wavelength laser. It employs seed-injected optical parametric oscillator technology to obtain a high-frequency stable 1645nm fundamental frequency light, which is then frequency-doubled to obtain an 822nm laser. The profile concentration of water vapor and the column concentration of methane in the atmosphere can be measured using differential absorption lidar (DIAL) and integral path differential absorption (IPDA) technologies, respectively.

The present invention discloses a photoacoustic spectroscopy gas detection device and method based on a differential diffuse reflection integrating sphere. The modulated laser output by a distributed feedback semiconductor laser is incident into the first diffuse reflection sphere of a differential diffuse reflection spherical resonance photoacoustic cell after passing through a laser collimator. After the target gas to be measured absorbs the laser energy, it causes the differential diffuse reflection spherical resonance photoacoustic cell to vibrate, and photoacoustic signals are generated in the first diffuse reflection sphere and the second diffuse reflection sphere. A first microphone and a second microphone are used to respectively detect the two-way photoacoustic signals in the first diffuse reflection sphere and the second diffuse reflection sphere, and the two detected photoacoustic signals are transmitted to a differential amplifier for differential operation. A control and data acquisition system collects the photoacoustic signals after differential operation and processes them by a computer to invert the concentration of the target gas to be measured. The detection device of the present invention has the advantages of large signal intensity, strong noise suppression ability, high system sensitivity, optical path free of adjustment, and small volume.

The embodiment of the present application provides a kind of based on the method and system for detecting the quality of dairy product of spectral analysis, belong to optical detection technical field.The method comprises: the sample of the dairy product to be detected is introduced into thermostatic colorimetric cell, utilizes modulated light source to emit incident light, while collecting original spectrum signal in sample channel and reference channel;Based on original spectrum signal, generate correction spectrum, and input correction spectrum into integrating sphere to collect full direction transmission light, obtain total transmission spectrum;Based on the scattering distribution data of different angles obtained by arranging annular multi-angle detector array on the outer wall of thermostatic colorimetric cell;Based on scattering distribution data and total transmission spectrum, construct scattering compensation factor, and make scattering compensation factor act on total transmission spectrum to obtain effective absorption spectrum;Effective absorption spectrum is input into component decomposition model, and the content of each target component of the dairy product to be detected is output.The present application scheme realizes the rapid, nondestructive and high-precision detection of the content of key components of dairy product.

The invention discloses a film thickness measurement method and system based on a line scanning hyperspectral camera, and relates to the technical field of hyperspectral imaging, and the method comprises the steps: obtaining a reflection or transmission spectrum image and a dark noise image, and carrying out the denoising processing; using a hyperspectral camera and an integrating sphere to carry out radiation correction on the reflected or transmitted spectral image; acquiring a film reflectivity or transmissivity spectrum according to the transmission spectrum without the film or the standard specular reflection spectrum; and determining the number of global interference periods according to a reflectivity or transmissivity curve, and calculating by using a fast Fourier transform method or a spectrum fitting method to obtain the film thickness. Image data with space and spectrum information is acquired through a hyperspectral camera, high-precision film thickness measurement under global imaging and dynamic scanning is realized through an algorithm combining fast Fourier transform and spectrum fitting, and meanwhile, the film thickness measurement precision is improved by adopting dark noise correction and integrating sphere radiation correction. The quantitative accuracy of incident light and sample reflection or transmission light is ensured, and the detection efficiency is greatly improved.

The embodiment of the invention provides a method and a device for measuring the absorptivity of a lens. The method for measuring the absorptivity of the lens is applied to the device for measuring the absorptivity of the lens, the device for measuring the absorptivity of the lens comprises a beam splitter and an integrating sphere, and a measuring station for placing a to-be-measured lens is arranged in the integrating sphere; the lens absorptivity measurement method comprises the following steps: controlling measurement light to pass through the beam splitter and then be projected to the integrating sphere; under the condition that a to-be-measured lens is placed at the measuring station, the reflectivity R and TRS parameters of the to-be-measured lens are obtained; wherein the TRS parameters comprise transmittance, diffuse reflection rate and internal scattering rate; and according to the reflectivity R and the TRS parameter, acquiring the absorptivity of the to-be-measured lens. According to the lens absorptivity measurement method, the problem that when the lens absorptivity is low, due to the fact that the measurement precision is limited, the absorptivity is always a negative value is solved.

The invention discloses a performance detection device for a high-power semiconductor laser, and relates to the technical field of laser detection. Comprising a base, a first supporting plate and a third supporting plate are arranged on the base, a transposition mechanism is arranged on the first supporting plate and comprises a rotating frame rotationally installed on the first supporting plate, and installation mechanisms are arranged on the rotating frame in an array mode and used for positioning and installing semiconductor lasers; a communicating mechanism is arranged at the top of the support plate I and is used for electrifying the semiconductor laser; a detection mechanism is arranged on the third supporting plate and comprises an integrating sphere and a CCD camera which are rotationally installed on the third supporting plate. A fluorescent screen is arranged on the third supporting plate and located above the CCD camera. A maintenance mechanism is arranged at one end of the base and is used for maintaining the integrating sphere and the CCD camera; the performance detection of the semiconductor laser can be efficiently completed, the detection of the semiconductor laser can be realized in batches, the operation is simple, the functions are rich, and the labor intensity is reduced.

The invention provides a device and a method for measuring the phase retardation of a micro-nano-sized wave plate, which are used for solving the problems that an existing method for measuring the phase retardation of the wave plate cannot characterize and measure the wave plate in the micro-nano size, optical detection equipment is expensive, an overall experimental measurement scheme is complicated to operate, the system universality is poor, and the measurement cost is high. And the instability of the measurement result of the measurement scheme for deducing the phase retardation of the wave plate based on the Mueller matrix is relatively high. Light emitted by the tunable light source is modulated by the integrating sphere to form unpolarized light, the unpolarized light is shaped into a planar light beam through the shaping reflection unit, and the planar light beam is normally incident to the first linear polarizer so as to emit completely linearly polarized light with different polarization angles; meanwhile, the second linear polarizer is arranged between the microscope objective and the sleeve lens, interference of factors such as light intensity jitter, system transmittance and wave plate rotation positioning precision on a measurement result is reduced by adjusting the deflection angle of the second linear polarizer, and the measurement precision is effectively guaranteed.

The utility model provides a resonance type photoacoustic cell and based on integrating sphere photoacoustic cell multi-component trace gas simultaneous detection device, wherein the resonance type photoacoustic cell comprises integrating sphere gas chamber and acoustic tube, the sphere wall of integrating sphere gas chamber is provided with gas inlet, gas outlet, light inlet and photoacoustic signal detection port, one ends of the acoustic tubes are connected to the photoacoustic signal detection ports, the other ends of the acoustic tubes extend in the direction away from the integrating sphere air chamber, the acoustic tubes are different in length, and one acoustic tube corresponds to one photoacoustic signal detection port. According to the utility model, a plurality of acoustic tubes with different lengths are designed, and different resonant frequencies can be generated by the acoustic tubes with different lengths, so that various gases can be detected at the same time on the premise of ensuring the detection sensitivity.

A spectrophotometer includes: a light source configured to emit light in a wavelength band including an excitation wavelength which causes a photoreaction on a target substance in a sample, the light source emitting a known number of photons of the light having the excitation wavelength; an integrating sphere having a light entrance port through which light emitted from the light source enters and a light emission port provided at a position deviated from an optical axis of the light entering the light entrance port; a sample placement unit provided in the light entrance port; and a light intensity measurement unit configured to measure intensity of light having the excitation wavelength emitted from the light emission port.

A calibration tool for a beam profiler is disclosed. The calibration tool includes an integrating sphere configured to receive laser light emitted from a laser and generate diffuse laser light. A sensor system is configured to output an expected intensity value of the diffuse laser light. An interface is configured to align a beam profiler with the integrating sphere to direct the diffuse laser light to be incident on an array of pixels of a beam sensor of the beam profiler. The array of pixels of the beam sensor is configured to output a plurality of native intensity values of the diffuse laser light. A computing system is configured to calibrate the beam profiler based at least on differences between the plurality of native intensity values of the diffuse laser light and the expected intensity value of the diffuse laser light.

The embodiment of the invention provides a dairy product quality detection method and system based on spectral analysis, and belongs to the technical field of optical detection. The method comprises the following steps: introducing a dairy product sample to be detected into a constant-temperature colorimetric pool, emitting incident light by utilizing a modulated light source, and simultaneously collecting original spectral signals in a sample channel and a reference channel; generating a correction spectrum based on the original spectrum signal, and inputting the correction spectrum into an integrating sphere to collect omni-directional transmission light to obtain a total transmission spectrum; scattering distribution data at different angles are obtained based on an annular multi-angle detector array arranged on the outer wall of the constant-temperature colorimetric pool; constructing a scattering compensation factor based on the scattering distribution data and the total transmission spectrum, and acting the scattering compensation factor on the total transmission spectrum to obtain an effective absorption spectrum; and inputting the effective absorption spectrum into a composition calculation model, and outputting the content of each target component of the dairy product to be detected. According to the scheme, rapid, lossless and high-precision detection of the key component content of the dairy product is realized.

The utility model relates to the technical field of integrating spheres, in particular to an adjustable optical integrating sphere which comprises an opening and closing assembly, front and back translation screw rod sliding tables are symmetrically mounted at the top of the opening and closing assembly, lifting assemblies are mounted at the tops of the front and back translation screw rod sliding tables, an integrating sphere is arranged between the two lifting assemblies, and a supporting assembly is mounted at the bottom of the opening and closing assembly. The lifting assembly comprises a lifting frame, a lifting lead screw is vertically installed on the inner side of the lifting frame, a lifting sliding block is installed on the lifting lead screw, the integrating sphere is composed of two hemispheres, and the two hemispheres are fixedly connected with the lifting sliding block on the outer side. According to the adjustable optical integrating sphere, through the design of the lifting assembly, the height of the integrating sphere can be flexibly adjusted according to actual requirements. The lifting motor drives the lifting lead screw to rotate and drives the lifting sliding block to move up and down. The design greatly improves the adaptability of the integrating sphere in different measurement scenes. The arrangement of the front-back translation lead screw sliding table enables the integrating sphere to move front and back in the horizontal direction.

The invention discloses a double-optical-path spectrum system for turbidity measurement and interference compensation, which comprises a double-optical-path spectrum measurement system, and the double-optical-path spectrum measurement system comprises a light source, and an optical path collimation and switching system, a double-optical-path measurement system, a transmission measurement system and a scattering measurement system which are electrically connected, the particle size distribution and extinction spectrum of the water body are reconstructed by combining a spectral analysis algorithm, and turbidity measurement and interference compensation are carried out on the water body. Sampling is carried out by adopting a dual-optical-path technology; scattering signals of a water body to-be-measured sample are measured by combining sampling data with an integrating sphere so as to verify the influence of the scattering signals, particle size distribution of water body particles is reconstructed by utilizing a light total scattering method, and a particle reconstruction wave band is determined by adopting a mode of reconstructing a comparison standard solution in multiple wave bands; secondary inversion of an extinction spectrum is carried out according to a reconstruction result, accumulation correction is carried out by using multiple groups of compensation results of different filter membranes of adjacent gradients, and the accuracy of a later turbidity compensation result is improved.

The invention relates to the technical field of photovoltaic film detection, in particular to photovoltaic film performance detection equipment which comprises a spectrophotometer with an integrating sphere accessory, the integrating sphere accessory is mounted in a sample bin of the spectrophotometer, and a mounting mechanism and a wrinkle generator are further mounted in the sample bin. The wrinkle generator comprises a jacking head for applying local mechanical pressure to the photovoltaic film and an L-shaped jacking rod for applying non-uniform mechanical tension, the wrinkle generator further comprises a transmission part, and the jacking head and the L-shaped jacking rod alternately extend out in the front-back direction under the transmission action of the transmission part so that different wrinkles can be generated on the surface of the photovoltaic film; the light transmittance of the photovoltaic film with different inclination degrees and different wrinkle conditions is detected through the spectrophotometer with the integrating sphere accessory, the method is more suitable for the actual use state of the photovoltaic film, the detection result is more accurate, and more reliable basis is provided for performance evaluation of the photovoltaic film.

The invention discloses a laser, visible and infrared portable composite target simulator which comprises a composite light source, a target, a card type optical system and a comprehensive control system. The composite light source adopts an integrating sphere structure, the integrating sphere is provided with a visible light source, an infrared radiation source and a laser fiber interface, the integrating sphere is also provided with an outlet, and the outlet can output a composite light beam; the cassette optical system comprises a secondary mirror and a primary mirror, and the target is arranged on a focal plane of the cassette optical system; the secondary mirror, the primary mirror, the target and the integrating sphere are coaxially arranged in sequence, and the composite light beam is emitted from an outlet of the integrating sphere, passes through the target and finally enters the cassette optical system; the comprehensive control system is connected with the integrating sphere through the visible light source, the infrared radiation source and the laser fiber interface, and is used for controlling the parameters of the laser, the visible light and the infrared radiation source. The device has basic functions of a specific wave band target simulator, can perform function verification on composite detection equipment, and is small in size, capable of being carried by one hand and good in portability.

The utility model relates to a solar cell film thickness acquisition device which comprises a spectrum detection module, a light source module and at least one integrating sphere. Wherein each integrating sphere is respectively connected with the spectrum detection module and the light source module, and each integrating sphere is respectively arranged above different preset to-be-detected point positions of a to-be-detected battery. Therefore, the effect of collecting the scattered light beams by the integrating sphere is good, and more reflected light beams can be collected and dodging can be carried out by utilizing the integrating sphere to collect the reflected light beams, so that more reflected light beams can be transmitted to the spectrum detection module. And then the spectrum detection module is used for collecting the reflected light beam after dodging, so that the detection accuracy of the poly-s i film thickness of the solar cell can be improved.

The embodiment of the invention provides a test system and a test method of an optical waveguide. The optical waveguide test system comprises a carrying table, a light source module, an integrating sphere assembly, a second detector and a third detector. The carrying table is used for carrying the optical waveguide, the light source module comprises a light source and a beam splitter, a light beam emitted by the light source is divided into a transmission light beam and a reflection light beam through the beam splitter, the transmission light beam is coupled into the light coupling area, and the reflection light beam is received by the integrating sphere assembly; the integrating sphere assembly comprises an integrating sphere body and a first detector, the first detector is located on the integrating sphere body, and the first detector obtains luminous flux according to a reflected light beam received by the first detector; the second detector is located on the light emitting side of the light coupling-out area and obtains a first light signal, and the first light signal is the brightness value of light on the light emitting side; the third detector is located on the backlight side of the light coupling-out area and obtains a second light signal, and the second light signal is the brightness value of the light on the back coupling-out side.

The invention relates to the field of optical metrology testing, and particularly discloses a point light source spectral radiance measuring and calibrating method, which is implemented by the following scheme: a point light source outputs spectral radiance, and a measured light source is imaged on an entrance slit of a double-cascade monochromator through a front optical system; the double-cascade monochromator is driven by the control system to split incident polychromatic light and output monochromatic light, the photoelectric detector receives the monochromatic light and outputs current, and the current is amplified by the high-precision amplifier and then is subjected to data acquisition and processing by the PC upper computer. An integrating sphere which has the same field of view with the point light source and has known spectral radiation brightness is used as a standard light source illumination test system, the absolute spectral responsivity of the whole system is calibrated, and the spectral radiation brightness of the point light source is tested by using the calibrated absolute spectral responsivity of the whole system; according to the invention, measurement of the spectral radiance of a weak point light source in a wide band can be realized.

The invention provides a spectral radiance source and a spectral radiance calibration method, and relates to the technical field of optics, the spectral radiance source comprises a first integrating sphere, a second integrating sphere, an optical fiber, a hollow connecting column, a baffle plate and a light source; the second integrating sphere is arranged in the first integrating sphere and is connected with the first integrating sphere through a hollow connecting column; the optical fiber is arranged in the hollow connecting column, one end of the optical fiber is connected with the light source, and the other end of the optical fiber is arranged at a light inlet hole in the second integrating sphere; and the baffle plate is arranged between the light inlet hole in the second integrating sphere and the second light outlet hole. According to the spectral radiation brightness source and the spectral radiation brightness calibration method provided by the invention, the surface uniformity and the angle uniformity of the light emitted by the spectral radiation brightness source can be improved through multiple reflections of the light under the condition that a diaphragm is not required to be arranged and / or the volume of the integrating sphere is not required to be increased, the influence on the spectral radiation brightness of the spectral radiation brightness source is small, and the calibration accuracy is high. Lambert characteristics of light emitted by the spectral radiation brightness source can be improved.

The invention discloses a light source system capable of continuously adjusting an attenuation ratio, and belongs to the technical field of optical radiation measurement and photoelectric detection. In order to solve the problems of wavelength dependence, discontinuous adjustment, spectrum distortion and the like existing in an existing light intensity adjusting scheme, a combined structure of an integrating sphere and a diaphragm cylinder is adopted, and the device comprises a light source, the integrating sphere with the high-reflection inner wall, a front-end adjustable diaphragm, the diaphragm cylinder with the extinction inner wall and a rear-end adjustable diaphragm. Continuous attenuation of output light intensity in a predetermined dynamic range is realized by adjusting the apertures of the front and rear diaphragms, the lower limit of attenuation ratio meets the requirement, and the dynamic range can reach more than three orders of magnitude. The system uses the integrating sphere to form a stable Lambert light source, the attenuation process depends on geometric parameters, spectral distribution and spatial uniformity basically remain unchanged, and the non-uniformity of a light-emitting surface is not greater than 5%. The invention further provides a calibration method, high-precision attenuation prediction is achieved through detector measurement and view factor model fitting, and the calibration method is suitable for weak cursor calibration, detector linearity testing and other applications.

The invention discloses a dual-channel imaging and spectral measurement system, which is characterized in that an objective lens is connected with a beam splitter prism for splitting light in an imaging light path into transmission light and reflected light, and the direction of a reflected light path is connected with a camera for collecting the reflected light to obtain a target scene image; the spatial light modulator is used for continuously transmitting the target light path backwards, the focusing mirror is used for completely zooming the target surface of the spatial light modulator to the integrating sphere, the integrating sphere is used for improving the uniform illumination of the light beam, and the spectrograph is used for measuring the spectral information of the target position. High-resolution space pictures and hyperspectral data are synchronously obtained through two channels, and the imaging quality is good; the image space telecentric objective lens eliminates measurement errors caused by object distance changes, monitors a target object in real time, does not need scanning imaging, and can detect a moving target. A target occupying a plurality of pixels opens pixels of a plurality of spatial light modulators at the same time, so that the signal-to-noise ratio is greatly improved, and the quality of spectral imaging is further improved; the system has the advantages of low data redundancy, simple structure, compact volume and low cost.

The application discloses a kind of physical defect detection devices and methods of spectacle optical lens. Including collimating light source, two-dimensional light point scanning system, power compensation optical system and integrating sphere arranged in sequence on light path, photovoltaic sensor on the reflecting surface of integrating sphere, data processing board connected with photovoltaic sensor, overflow port for light beam passing is opened on integrating sphere.The application solves the comprehensive detection technical problem of detecting the defects such as bubble, scratch and pitting of the lens with optical power, and establishes the industry standard accordingly.The application is simple in structure, low in cost and high in sensitivity, and the 100% detection rate makes the operator only need to recheck the lenses that are misdetected as defects due to removable dirt on the surface.Usually, these lenses that need to be rechecked are about 3%.Thus, the application greatly reduces the intensity of workers and improves the efficiency, and also avoids unnecessary waste.