163 results about "Transmittance spectra" patented technology

The invention relates to the technical field of optical detection, in particular to a glass bottle surface spraying quality detection method which comprises the following steps: under a specified wavelength, acquiring target incident light by adjusting a polarization angle, irradiating a glass bottle spraying layer, collecting a transmission spectrum signal to calculate parallel and vertical polarization transmissivity and ratio of the spraying layer, and generating polarization transmissivity. According to the method, the light with the polarization angle irradiates the spraying layer, the polarization component of the transmission light is obtained, the thickness uniformity and the internal structure are analyzed, weak areas, particle flaws and excessive spraying of the spraying layer are recognized, the defect detection precision is improved, multi-angle transmissivity data are collected, the change rate is calculated, and color deviation and thickness abnormity are accurately positioned; through cross analysis of multiple optical parameters, evaluation of adhesive force, curing quality and color consistency is more detailed, spraying abnormity is classified, multiple detection means act synergistically, interference such as environment illumination and material reflectivity is reduced, and the detection accuracy of spraying quality is improved.

The invention belongs to the technical field of all-dielectric metamaterial optical devices and machine learning, and discloses an all-dielectric metasurface target spectral response reverse design method based on deep learning. And realizing efficient prediction of the transmission spectrum by using a convolutional neural network-recurrent neural network-residual network architecture. A fitness function is designed, and a machinable structure is generated by aiming at single-peak and multi-peak target wavelength optimization and combining a linear and shape optimization strategy. The method breaks through the limitation of spectrum dependence and fixed structure type of the traditional reverse design, realizes on-demand design, and remarkably improves the design efficiency and processing compatibility of the integrated photonic device.

A light absorber 10 has a transmission spectrum satisfying the following requirements (I), (II), (III), (IV), and (V) at an incident angle of 0°. The light absorber 10 has a haze less than 0.20%. (I) An average transmittance TA0deg(460-600) is 75% or more. (II) A shorter cut-off wavelength λH0deg(s) is in a range of 390 nm to 450 nm. (III) A longer cut-off wavelength λH0deg(L) is in a range of 600 nm to 680 nm. (IV) An average TA0deg(300-380) is 1.2% or less. (V) An average TA0deg(750-1000) is 1.2% or less.

The invention relates to a partial discharge detection system based on Rydberg atoms in the field of partial discharge detection of electrical equipment, the system comprises an optical path frequency stabilization module, an atom probe, a photoelectric detection module, a controller module and a power frequency synchronous trigger signal circuit, the optical path frequency stabilization module locks 852.35 nm probe light and pump light frequency less than 509.53 nm through SAS and EIT technologies, and the atomic probe is used for detecting the frequency of the probe light. Inducing transition from a cesium atom ground state to a first excited state to a Rydberg state; under the effect of partial discharge pulse, the atomic probe outputs a modulated EIT transmission spectrum signal, after photoelectric conversion and filtering, the controller module analyzes the amplitude and phase information of the pulse in combination with a power frequency synchronizing signal, the upper computer generates a PRPD diagram to analyze the discharge correlation, the detection sensitivity of the system reaches-50dBm, the frequency band of 300MHz-2GHz is covered, the dynamic range is greater than or equal to 50dB, the equivalent height is greater than or equal to 20mm, and the discharge correlation is greater than or equal to 20mm. Broadband and high-resolution detection is achieved, the problem of phase synchronization is solved, and the device is suitable for high-voltage environment on-line monitoring.

The invention provides an active regulation and control device for a microwave resonant cavity based on Rydberg atoms. The microwave resonant cavity comprises a protective shell, an atomic gas chamber and a photoelectric detector, the active regulation and control device comprises a PID control module and piezoelectric ceramics, the PID control module is used for processing a received EIT transmission spectrum signal after generating a modulation signal to carry out atomic resonant frequency scanning on the atomic gas chamber, obtaining a target resonant frequency through a current feedback zero crossing point corresponding to an EIT transmission spectrum valley bottom value, and generating a deviation correction signal; and the piezoelectric ceramic is used for adjusting the length of a protective shell of the microwave resonant cavity according to the received correction signal, so that the atomic resonant frequency is locked as the target resonant frequency. The invention further provides an active regulation and control method for the microwave resonant cavity based on the Rydberg atoms. According to the invention, the resonant frequency of the microwave resonant cavity can be rectified in real time, and the optimal and most stable resonant mode of the local oscillation microwave frequency responding to atoms is kept.

The invention belongs to the technical field of light polarization analysis, and discloses a method for determining the sex of an embryo in an egg based on polarization image recognition. Comprising the following steps: acquiring a transmitted spectrum image sequence of a hatching egg to be detected at a plurality of polarization angles, wherein the transmitted spectrum image sequence covers a transmitted spectrum image from visible light to a near-infrared band; extracting a polarization sensitive wave band set of the embryonic tissue according to the polarization state change characteristics of the embryo area in the transmitted spectrum image at different polarization angles; constructing an embryo gender characteristic spectrum based on the polarization degree distribution difference and the spatial texture characteristics of each wave band in the polarization sensitive wave band set; determining an optimal wave band combination for sex determination by analyzing the relevance between a polarization anisotropy index of a specific wave band in the embryo sex characteristic spectrum and an embryo development stage; according to the polarization response mode corresponding to the optimal wave band combination, the sex of the embryo in the egg is judged, and the resource investment and the waiting cost are greatly reduced.

The invention discloses a color temperature correction method and device of a liquid crystal display system and a storage medium. The method comprises the following steps: determining tristimulus values of original white pixel points of the system in a CIE 1931XYZ color space according to normalized spectral power distribution of a white light backlight source of the liquid crystal display system and a transmittance spectrum of a three-primary color filter of a color film; determining a target RGB color space and a target color temperature, and constructing a color space conversion matrix from the target color space to an XYZ color space; converting the tristimulus values of the original white pixel points of the system in the XYZ color space into the three-primary color channel values of the target white pixel points under the target color temperature in the target color space by using the inverse matrix of the color space conversion matrix; and driving the system to display white according to the three-primary color channel value of the target white pixel point. According to the scheme, the color temperature correction of the liquid crystal display system is realized through a method of combining measurement and theoretical calculation, and the color temperature correction efficiency is improved.

The invention discloses a light-induced thermoelastic spectrum trace gas detection device and method based on an echo wall mode microcavity. The device comprises a first signal generator, a lock-in amplifier, a laser device control unit, a first laser device, a laser beam collimation unit, a gas chamber, a focusing lens, a tuning fork, an echo wall mode microcavity, a coupling medium, a second laser device, a second signal generator, a photoelectric detector and a computer, the emergent laser is focused to the interdigital root of the tuning fork through the focusing lens; laser output by the second laser device is transmitted by the coupling medium and coupled into the echo wall mode microcavity in an evanescent wave form, the echo wall mode microcavity deforms, the resonant wavelength of the echo wall mode microcavity in the transmitted spectrum moves, and the concentration of the gas to be detected in the gas chamber is inverted according to the displacement of the resonant wavelength. The problems that a quartz tuning fork is large in thermal noise and weak current signals are easily interfered by an electromagnetic field are solved.

The invention discloses a film strength detection method and related equipment, and the method comprises the steps: carrying out the multi-angle broadband scanning sampling of the whole process of an incident light beam penetrating through a lens, recording the transmission light intensity, group phase and scattering power, and generating a reference transmission spectrum matrix; applying low-amplitude periodic ultrasonic vibration disturbance to the lens according to the reference matrix, synchronously obtaining a transmission spectrum time change curve, and performing time domain analysis to obtain a stress response characteristic matrix; determining a detection path by integrating the two matrixes, performing incremental load scratch disturbance along the path, recording data of transmission light intensity and scattering power changing along with the load in real time, and forming a critical damage response data set; performing fine grid transmission light scanning on the scratch and the neighborhood, acquiring multi-angle scattering distribution, and constructing optical characteristic distribution data; and performing multi-dimensional analysis on the data, and outputting a result. According to the scheme, early-stage accurate identification and evaluation of microcracks in a lens film layer and interface hidden defects are realized, and the use reliability of the lens is improved.

The invention provides a soil stress monitoring method based on a distributed echo wall optical fiber cavity array, which innovatively utilizes a plurality of echo wall structures to realize distributed multi-point monitoring of soil stress in the same optical fiber, and accurately reflects the spatial distribution of the soil stress by monitoring the resonant frequency change of the echo wall structures; the method comprises the following steps: testing connection; monitoring the resonant frequency of the echo wall of the optical fiber echo wall array sensor; a wide-spectrum light source is adopted to excite an optical fiber to generate an optical signal, after the optical signal is transmitted by the optical fiber, when the optical signal passes through echo wall structures with different diameters of the optical fiber echo wall array sensor, the optical signal resonates at resonant frequencies of the echo wall structures, so that resonant trapped waves on multiple frequencies appear in a transmitted spectrum measured by a spectrograph; monitoring the resonant frequency change of the echo wall structure caused by the soil stress, and obtaining the spatial distribution information of the soil stress.

The invention relates to the technical field of new material detection, in particular to a touch screen production fault detection method based on data feedback, which comprises the following steps of: arranging a transmission spectrum detection device on a flexible touch screen roll-to-roll production line, and continuously monitoring a plurality of layers of films by adopting a U-shaped light path structure to obtain multi-wavelength transmission spectrum data; based on an optical absorption model of each thin film layer, chromatography decoupling operation is carried out on the multi-wavelength transmission spectrum data, and a target spectrum is separated; according to the film temperature monitored in real time, combining a preset material temperature optical constant database and setting a reference light path to carry out temperature compensation and baseline correction on the target spectrum; establishing a silver nanowire agglomeration spectrum model, performing second derivative calculation on the target spectrum after baseline correction, identifying spectrum characteristic peaks, and evaluating the agglomeration degree of the silver nanowires; and judging the degradation defect of the conductive network based on the agglomeration degree of the silver nanowires to obtain a defect detection result, and adjusting process parameters.

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.

To provide an optical filter advantageous for exhibiting desired transmissivity characteristics even without comprising a near infrared ray reflection film.SOLUTION: An optical filter 1a comprises a first light absorber 11 and a second light absorber 12. The first light absorber 11 contains an organic dye. The second light absorber 12 contains a copper component, and absorbs at least part of infrared rays. The optical filter exhibits a first transmission spectrum satisfying the following conditions: (I) an average value TA450-600 of a transmissivity in a wavelength range of 450 nm to 600 nm is 76% or more; (II) a first cutoff wavelength λF falls in a range of 360 nm to 450 nm; (III) a second cutoff wavelength λS falls in a range of 600 nm to 700 nm; and (IV) a maximum value TM700-750 of a transmissivity in a wavelength range of 700 nm to 750 nm is 5% or less.SELECTED DRAWING: Figure 1

An atomic oscillator of the present disclosure includes: a gas cell in which an alkali metal atom is encapsulated; a light generating unit emitting emission light onto the gas cell; a light detecting unit detecting transmitted light passed through the gas cell; and a control device determining a resonance frequency of the emission light based on a light amount of the detected transmitted light. The control device stores correspondence information in which a feature value of a transmitted light spectrum is associated with a state of the emission light, performs estimation processing to extract the feature value of the transmitted light spectrum from the detected transmitted light and estimate the state of the emission light corresponding to the extracted feature value of the transmitted light spectrum based on the correspondence information, and controls an emission state of the emission light based on the estimated state of the emission light.

The invention relates to the field of microcavity photonics and the technical field of control, and provides a temperature locking method and device based on an optical microcavity absorption peak position, and the method comprises the steps: employing a tunable laser to output continuous light, and obtaining a transmission spectrum power curve; manually adjusting the output wavelength of the tunable laser, and recording the wavelength interval as a rough absorption peak position when a wave band with significantly reduced transmission spectrum power is detected; automatically adjusting the output wavelength of the tunable laser, and continuously scanning in the rough wavelength interval of the absorption peak position to obtain the absorption peak position; the offset between the position of the absorption peak and the position of a target absorption peak of the optical microcavity in a natural room temperature state is calculated, and the detected position of the absorption peak is stably maintained at the position of the target absorption peak by automatically heating or refrigerating the optical microcavity. Through the method, the problems of heat conduction path delay and thermal field gradient between the microcavity and the sensor are avoided, and the response speed and precision of wavelength drift compensation are improved.

The invention relates to a low-temperature convergent transmission spectrum measuring device based on a Fourier transform infrared spectrometer. The device comprises a Fourier transform infrared spectrometer, a convergence angle optical system, a low-temperature optical system and a receiver. The convergence angle optical system comprises a collimating lens, a diaphragm, a convergent lens group and a reflector, and the low-temperature optical system comprises a diaphragm, a sample holder and a low-temperature thermostat. The collimating lens is used for converting divergent light emitted by the infrared spectrometer into parallel light, the aperture diaphragm is used for regulating and controlling the spot size of the parallel light, the convergent lens is used for converting the parallel light into convergent light, and after the convergent light is emitted through a sample, the emergent divergent light is converted into the parallel light. Incident parallel light is reflected into a receiver in a convergent state by using an aspheric concave reflector, and the temperature of a sample is reduced to a temperature to be measured by using a cryostat. The low-temperature convergent transmission spectrum measuring device has the characteristics of simple structure, large convergent angle regulation and control range, wide spectrum band and temperature coverage range and the like.

The present invention provides a method and system for detecting the quality of tobacco leaf processing based on hyperspectral technology, and relates to the technical field of tobacco leaf processing detection. The method comprises: fixing a tobacco leaf sample on a transparent module of a conveyor belt; moving the transparent module to a detection position; turning off an LED fill light, a halogen tungsten lamp and an ultraviolet light source, turning on a transmission light box, and obtaining transmission spectrum data of the tobacco leaf sample; fixing the tobacco leaf sample on a black module of a conveyor belt; moving the black module to a detection position; turning off the transmission light box and turning on an LED fill light, turning on a halogen tungsten lamp and an ultraviolet light source in sequence, and obtaining reflection spectrum data and fluorescence spectrum data of the tobacco leaf sample; and determining the comprehensive quality information of tobacco leaf processing according to the transmission spectrum data, reflection spectrum data and fluorescence spectrum data. According to the present invention, the irradiation of multiple light sources and the collection of multimodal hyperspectral data can be realized, the multiple quality characteristics of tobacco leaf samples can be evaluated, and the comprehensiveness, accuracy and flexibility of quality detection can be improved.

The invention provides an optical fiber tilt angle sensor and a two-dimensional tilt angle measuring device and method. The optical fiber tilt angle sensor comprises a light source assembly and a sensing probe, the light source assembly is configured to generate four paths of polarized light and output to the sensing probe; the sensing probe comprises a cuboid shell, a mass ball, four stress rods and four long-period fiber gratings; the mass ball is fixed on the top surface of the shell through a connecting piece; the first end of the stress rod is fixed on the mass ball, and the second end of the stress rod abuts against one long-period fiber grating; the four periodic fiber gratings are respectively arranged on four inner side surfaces of the shell; when the long-period fiber bragg grating is subjected to transverse stress of the stress rod, the polarization mode of one path of received polarized light is separated, and a transmission spectrum signal with two loss wave crest spectrums with different wavelengths is output; wherein the wavelength difference between the two loss peak spectrums is used for determining the inclination angle. Compared with an existing device, the optical fiber tilt angle sensor has very high sensitivity and stability.

A kind of water environment cadmium ion and temperature double parameter optical fiber chemical sensing system relates to water body environment detection field.In the above system, spontaneous emission light source is near infrared light source;The surface of optical fiber sensing unit is coated with magnetic MOF-cadmium ion imprinted polymer;The light signal generated by spontaneous emission light source enters optical fiber sensing unit, optical spectrometer collects the transmission spectrum signal of optical fiber sensing unit, and the collected spectrum data are output to photoelectric detection module;Photoelectric detection module converts light signal into electrical signal and transmits to demodulation module;Demodulation module gives the cadmium ion concentration and temperature according to input signal using machine learning algorithm.The present application has higher specific recognition ability to cadmium ion, and can effectively separate the coupling influence of cadmium ion concentration and temperature on sensing signal.

The wavelength of the tunable laser device is stabilized by: providing a laser beam from a tunable laser source to an interferometer having a stable reference axis and a gas absorption unit; scanning the laser beam between the first wavelength and the second wavelength to determine a transmission spectrum of the absorption unit as a function of the wavelength difference; determining a phase change as a function of the wavelength difference using an interferometer; determining a transmission spectrum as a function of the phase change using the transmission spectrum of the gas absorption unit as a function of the wavelength difference and the phase change; correlating the determined transmission spectrum as a function of the phase change with a pre-calibrated transmission spectrum of the tunable laser device to provide an absolute laser wavelength as a function of the phase change; defining a phase set point corresponding to the wavelength set point; a tunable laser device is tuned to a wavelength setpoint using a phase setpoint.

The present invention discloses a chlorophyll hyperspectral inversion method based on a curled plant leaf radiation transmission model. The method is as follows: 1. For the curled leaf to be measured, the hemispherical reflectance spectrum DHR and the hemispherical transmission spectrum DHT are measured. The three-dimensional point cloud data of the curled leaf is collected. 2. The leaf structure parameters, leaf surface roughness, leaf average refractive index and leaf chlorophyll absorption coefficient of the curled leaf are obtained. 3. Based on the three-dimensional point cloud data, the spatial geometric model of the curled leaf is obtained. 4. The spatial geometric model of the curled leaf is spectrally simulated. 5. Chlorophyll concentration is inverted. The present invention takes into account the influence of the spatial morphology of the curled leaf on the multi-angle spectral simulation and the chlorophyll hyperspectral inversion results, improves the accuracy of chlorophyll inversion, and can obtain a high-precision canopy radiation transmission model based on this.

The invention provides a calcium ion concentration detection sensor based on a hydrogel-coated tilted fiber bragg grating and a preparation method of the calcium ion concentration detection sensor. The sensor is composed of a broadband light source, a polarization controller, a TFBG sensor and a spectrum analyzer. The broadband light source is used for providing a light source, the polarization controller is used for obtaining the P polarization state of input light, the hydrogel functionalized TFBG sensor is used for detecting the concentration of a calcium ion solution in the flow cell, the spectrometer is used for monitoring and recording the spectrum change condition, and the solution concentration is obtained according to the transmission spectrum intensity change condition. The device has the advantages of high sensitivity, wide detection range, low detection limit, reusability, electromagnetic interference resistance and small size.

The application discloses a method for measuring optical constants of transparent solid based on a layered sample transmission spectrum analysis method, and belongs to the fields of spectroscopy and optical measurement. The principle of the application is that: layering flat sample materials with the same thickness, measuring the transmittance of two layered combination samples, deriving the transmittance t and reflectance r of light vertically through a single layer sample with a thickness of L through algebraic operation, then obtaining the attenuation factor y and the interface reflectance R through an analytical method, and further obtaining the extinction coefficient k and the refractive index n of the sample, so as to realize the measurement of the optical constants of the transparent solid. The application solves the problem of inconsistent conditions of measuring the reflection and transmission spectrum of the single layer sample in the prior art, and also solves the iteration error and the time-consuming calculation problem existing in the layered sample transmission spectrum inversion method, and greatly simplifies the experimental measurement and solving calculation process.

The invention provides an adjustable filter based on temperature change characteristics according to the problem of traditional filtering limitation, and relates to the technical field of filter design in imaging spectrometers. According to the adjustable filter provided by the invention, the temperature is taken as an independent variable, and the change of the transmissivity of the thermally induced phase change material in the phase change temperature interval is converted into the change of the transmission spectrum of the interference film along with the temperature, so that the adjustable function of the filter is realized. Through a temperature-transmissivity spectrum mapping relation, continuous spectrum tuning without mechanical motion and with low power consumption is realized, and an innovative filtering solution is provided for an imaging spectrometer. Meanwhile, the filter regulation and control function is achieved, meanwhile, the temperature change transmission spectrum characteristic meets the requirement of spectrograph inversion, that is, original data of spectrum inversion is provided for transmissivity spectrums at different temperatures, and therefore the invention further provides a spectrum inversion method. The method can be applied to the technical fields of environment monitoring, medical diagnosis, intelligent manufacturing and the like.

A filter array includes filters disposed in a two-dimensional plane and having different transmission spectra. The filters include a first filter with a transmission spectrum having a first peak group including first and second peaks adjacent to each other, and at least one second filter with a transmission spectrum having a second peak group including third and fourth peaks adjacent to each other. Of peaks included in the second peak group, the third peak has a wavelength closest to a wavelength at the first peak. A first interval between the wavelength at the first peak and a wavelength at the second peak is different from a second interval between the wavelength at the third peak and a wavelength at the fourth peak. ΔFSR / σ≥0.25, where ΔFSR denotes an absolute value of a difference between the first and second intervals and σ denotes a half-width of the first peak.

The present invention relates to a method for preparing an oblique-incidence high-performance narrow-band filter film, comprising the following steps: step 1: prepare obliquely deposited single-layer films of high and low refractive index materials respectively; step 2: test the transmittance and reflectance curves of the single-layer films of high and low refractive index materials respectively, and obtain the thickness and refractive index parameters of the single-layer films of high and low refractive index materials by fitting according to the transmittance and reflectance respectively; step 3: design and determine the film system structure of the five-cavity narrow-band filter film at the working angle according to the thickness and refractive index parameters of the single-layer films of high and low refractive index materials; step 4: prepare an oblique-incidence high-performance narrow-band filter film according to the film system structure of the five-cavity narrow-band filter film, and test the transmission spectrum of the oblique-incidence high-performance narrow-band filter film. Compared with the prior art, the present invention can solve the problem that the optical properties of the narrow-band filter film will change significantly when the incident angle is greater than 25° in the prior art, and the film has high transmittance.

The invention relates to an ophthalmic article (1), in particular for sunglasses, comprising at least one substrate (9) and a photochromic filter compound (15), the ophthalmic article (1) having a first transmission spectrum in an activated state of the photochromic filter compound (15) and a second transmission spectrum in a deactivated state of the photochromic filter compound, such that: ⋅—the first and the second transmission spectra at wavelengths lower than 380 nm is lower than 1%, ⋅—the first and the second transmission spectra have a relative first maximum between 460 nm and 510 nm, ⋅—the first and the second transmission spectrum have a relative first minimum between 560 nm and 610 nm, and where ⋅—Tvactivated is the luminous transmittance according to ISO_13666 in the activated state of the photochromic filter compound. ⋅—Tvdeactivated is the luminous transmittance according to ISO_13666 in the deactivated state of the photochromic filter compound. ⋅The lens has a reduced transmission in the blue between 400 and 450 nm and a reduced transmission around 585 nm. The lens provides a good contrast and reduces glare.TvdeactivatedTvactivated>2.5TvactivatedTνdeactivated

The invention belongs to the technical field of optical thin films, display imaging and holographic storage, and particularly discloses a chalcogenide phase-change material-based dynamic programmable narrow-band optical filter, a first Bragg reflector, a middle spacing layer and a second Bragg reflector form a Fabry-Perot resonant cavity, the resonant wavelength of the Fabry-Perot resonant cavity is determined by the optical thickness of each thin film, and the thickness of the Fabry-Perot resonant cavity is smaller than that of each thin film. The optical filter is used for outputting different transmission spectrums by changing the central wavelength of filtered light; the chalcogenide phase change material layer is used for realizing on-off and gray scale adjustment of a transmitted spectrum through a phase change process from an amorphous state to a crystalline state; and the top anti-reflection layer is a third transparent dielectric layer, and is used for anti-reflection of the transmitted spectrum and preventing oxidation of the chalcogenide phase change material. According to the invention, excellent narrowband filtering characteristics and high color saturation are realized, and high switch contrast is realized by using significant difference of extinction coefficients before and after phase change of the phase change material.

The light absorber (10) has a transmission spectrum satisfying the following conditions (I), (II), (III), (IV), and (V) at an incidence angle of 0 DEG. The light absorber 10 has a haze of less than 0.20%. (I) The average value TA0deg (460-600) is 75% or more. (II) The short wavelength-side cutoff wavelength [lambda] H0deg (S) is from 390 nm to 450 nm. (III) The cutoff wavelength [lambda] H0deg (L) on the long wavelength side is 600 nm to 680 nm. (IV) The average value TA0deg (300-380) is 1.2% or less. (V) The average value TA0deg (750-1000) is 1.2% or less.