91 results about "Wavelength absorption" patented technology

The present invention relates to a method, apparatus and system for measuring the content of either one or more gas analytes that may be part of a gas. The present invention applies a spectroscopic method that utilizes an extremely narrow linewidth laser beam that is absorbed when its wavelength is swept across the interval containing the absorption line of the analyte. The method, apparatus and system of the present invention is applicable to any analyte in gas phase that is part of a gas mixture, or to any analyte in a plasma phase, as well as analytes in other environments.

The present invention provides metal fine particles which have selective wavelength absorption characteristics in a wavelength region from visible light to near infrared light, and have sharp absorption characteristics, and influences little the surrounding wavelength, and therefore, they yield tones having high chroma. The present invention provides metal fine particles wherein an aspect ratio is in a range from 1.1 to 8.0, a maximum absorption wavelength in plasmon absorption is in a range from 400 nm to 1,200 nm, and an absorption coefficient at a peak position of the maximum absorption wavelength is in a range from 6,000 to 20,000 L / mol·cm (measurement concentration: 1.6×10−4 mol / L, and solvent:water).

The invention claims to protect a dual-wavelength tunable short pulse fiber laser, mainly including pumping sources (1)(10), wavelength division multiplexers (2)(4)(6)(11), gain fiber (3)(12), a graphene saturable absorber (5), fiber couplers (7)(13), circulators (16)(17), reflection type adjustable filters (8)(14) and broadband fiber environments (9)(15) formed by 50:50 fiber couplers. The dual-wavelength tunable short pulse fiber laser provided by the invention adopts a double-ring cavity or double-linear cavity structure, the wavelength division multiplexers (4)(6) and the graphene saturable absorber (5) serve as a common branch of the double-ring cavity or double-linear cavity structure, utilizes the advantages of wide wavelength absorption range, smooth absorption, low saturation intensity and ultrafast recovery time of the graphene saturable absorber, and combined with the reflection type adjustable filters, stable output of synchronous short pulses with tunable single wavelengths and large dual-wavelength intervals of the fiber laser can be realized.

The subject invention relates to a technique employing a calibrated thermal radiometer, and the radiation characteristics of ionic crystals to measure the temperature distribution of crystals during crystal growth. When in high temperature, the ionic crystals often exhibit a transparent region having low reflectance, and low absorption in the spectrum between the short-wavelength absorption edge and the long-wavelength absorption edge. In addition, these crystals have an opaque spectral region having low reflectance and high absorption, i.e. have surface radiation of high emissivity when the spectrum is in the range between the long-wavelength absorption edge and the onset of the Reststrahlen band. The spectral emissivity of the ionic crystal may not change significantly with a variation of temperature in this opaque region. According to Planck's law, the surface temperature distribution during crystal growth can be obtained after the surface radiation of the opaque region is detected, and the emissivity at the melting point is calculated.

Photochromic h-annellated benzo[f]chromene compounds, especially photochromic compounds derived from benzo[f]chromenes, which compounds have particular long wavelength absorption maxima in their closed form and exhibit good performance in the open, colored form, so that good compatibility is achieved with indenonaphthopyrans which are diffused in phototropic glasses used in phototropic glass applications, and the use of such photochromic h-annellated benzo[f]chromene compounds in photochromic synthetic resin articles, particularly ophthalmic lenses.

An optical filter for compensating for color shift is provided in front of a display panel of a display device. The optical filter includes a background layer and a green wavelength absorption pattern provided with a predetermined thickness on the background layer. The green wavelength absorption pattern absorbs a green wavelength of light. The green wavelength absorption pattern contains a material that absorbs a green wavelength of light in the range of 510 nm to 560 nm, and can also contain a white light absorbing material. A green's complementary color absorbing part absorbs a wavelength of light complementary to green, and contains at least one of a material absorbing a blue wavelength of light in the range of 440 nm to 480 nm and a material absorbing a red wavelength of light in the range of 600 nm to 650 nm. A first thick-film layer, a first thin-film layer, and a second thick-film layer are stacked over one another in the order named.

This invention describes a first report on the synthesis of certain 124I-labelled photosensitizers related to chlorines and bacteriochlorins with long wavelength absorption in the range of 660-800 nm. In preliminary studies, these compounds show a great potential for tumor detection by positron emission tomography (PET) and treatment by photodynamic therapy (PDT). The development of tumor imaging or improved photodynamic therapy agent(s) itself represent an important step, but a dual function agent (PET imaging and PDT) provides the potential for diagnostic body scan followed by targeted therapy.

An improved linear wave guide type surface plasmon resonance (SPR) microsensor, particularly a microsensor employing a dual-opening multi-channel design, adopts a cross differential comparison to enhance the performance of the microsensor and uses a surface plated metal thin film to provide a wavelength absorption according to a SPR characteristic and match with an appropriate sized micro-channel to give a highly sensitive high-flux measurement. The invention applied in a water solution sample comprises: a substrate; a bottom layer contacting a surface of the substrate; at least one wave guide layer contacting the bottom layer and the other surface of the substrate; at least two SPR sensing areas on a surface opposite to the contact surface of the wave guide layer and the bottom layer; at least two SPR sensing film layers on a surface opposite to the contact surface of the two PRS sensing areas and the wave guide layer.

A recording apparatus for recording information in a thermosensitive medium which has a photothermal conversion layer having a light wavelength absorption property and a coloring layer colored by the heat generated by the photothermal conversion layer comprises a first light source that emits a light beam for writing information to a scanning position in a main scanning direction in the thermosensitive medium, and a second light source that emits a light of lower energy density than the light beam emitted by the first light source to the scanning position in the main scanning direction in the thermosensitive medium or to the vicinity thereof. The first light source and the second light source emit lights having wavelengths within the range of the absorption property of the photothermal conversion layer respectively to form recording dots of one line in the main scanning direction in a noncontact manner with the thermosensitive medium.

A recording apparatus for recording information in a thermosensitive medium which has a photothermal conversion layer having a light wavelength absorption property and a coloring layer colored by the heat generated by the photothermal conversion layer comprises a first light source that emits a light beam for writing information to a scanning position in a main scanning direction in the thermosensitive medium, and a second light source that emits a light of lower energy density than the light beam emitted by the first light source to the scanning position in the main scanning direction in the thermosensitive medium or to the vicinity thereof. The first light source and the second light source emit lights having wavelengths within the range of the absorption property of the photothermal conversion layer respectively to form recording dots of one line in the main scanning direction in a noncontact manner with the thermosensitive medium.

An optical filter for compensating for color shift is provided in front of a display panel of a display device. The optical filter includes a background layer and a green wavelength absorption patternprovided with a predetermined thickness on the background layer. The green wavelength absorption pattern absorbs a green wavelength of light. The green wavelength absorption pattern contains a material that absorbs a green wavelength of light in the range of 510 nm to 560 nm, and can also contain a white light absorbing material. A green's complementary color absorbing part absorbs a wavelength of light complementary to green, and contains at least one of a material absorbing a blue wavelength of light in the range of 440 nm to 480 nm and a material absorbing a red wavelength of light in therange of 600 nm to 650 nm. A first thick-film layer, a first thin-film layer, and a second thick-film layer are stacked over one another in the order named.

The invention discloses a multi-energy level silicon-based thin film solar cell, comprising a substrate, a transparent conductive film, a P-typed semiconductor layer, an intrinsic semiconductor layer, an N-typed semiconductor layer, and an electrode; one side of the substrate is used for lighting; the transparent conductive film is formed on the substrate and used for taking out power and upgrading the photoelectric conversion efficiency; the P-typed semiconductor layer is formed on the transparent conductive film and used for generating a cavity; the intrinsic semiconductor layer is formed above the P-typed semiconductor layer and used for improving the electrical characteristics of the solar cell; the N-typed semiconductor layer is formed above the intrinsic semiconductor layer and used for generating an electron; and the electrode is formed above the N-typed semiconductor layer and used for taking out power and upgrading the photoelectric conversion efficiency. The multi-energy level silicon-based thin film solar cell uses the thin films of different materials so as to improve the light wavelength absorption range thereof and enhance the photovoltaic conversion efficiency of the solar cell.

The invention discloses a cytoactive detection method based on a capillary zone electrophoresis mode, belonging to the technical field of biological cytoactive detection. Firstly, cells to be detected are dyed and fixed to prepare cell suspension with certain concentration; capillary zone electrophoresis (CZE) carries out visible absorption detection of single-wavelength or multiple-wavelength ultraviolet to cells, detected peak area summation represents the light absorption value of cells under the detection wavelength, and a product of the ultraviolet and visible double-wavelength absorption value represents cytoactive. The method of the invention is accurate, quick and simple, has low cost, can qualitatively and quantificationally detect cytoactive, can detect cytoactive and analyze toxicant cytotoxicity and can be applied in relevant fields, such as cytobiology, cytotoxicology, medicine research and development, toxicant cytotoxicity evaluation and the like.

The invention relates to a method for measuring perfluorooctane sulfonate by using dual-wavelength ratio ultraviolet spectroscopy, and belongs to the field of physical and chemical inspection research. Perfluorooctane sulfonate molecules do not have ultraviolet absorption functional groups and do not have ultraviolet absorption properties. In the method provided by the invention, the ultraviolet absorption generates electrostatic interaction with toluidine blue under acidic conditions to form an ionic associate, the ionic associate shows two characteristic peaks at 632 nm and 502 nm and performs rational absorption, the concentration of a perfluorooctane sulfonate solution has a good linear relationship with an ultraviolet dual-wavelength absorption ratio value under selected conditions, and the dual-wavelength ratio ultraviolet spectroscopy for measuring the perfluorooctane sulfonate is established accordingly. The method provided by the invention is suitable for measuring the perfluorooctane sulfonate in environmental water samples, and has the advantages of simple and convenient operation, high sensitivity, strong anti-interference ability and the like.

Disclosed is a complex film for a display apparatus, which comprises a base film; an anti-reflection film formed on a first surface of the base film and adapted to prevent reflection of external light; an external light shielding film formed on a second surface opposite to the first surface and including an external light shielding pattern, the external light shielding pattern having a plurality of external light shielding parts formed on a surface of the external light shielding film; and an adhesive film formed on the external light shielding film and including at least one colorant having a selective wavelength absorption capability. The complex film has multi-functionalities such as electromagnetic wave shielding, external light absorption, near infrared ray shielding, color correction, and the like, thereby simplifying an assembly process of the display apparatus, and reducing the thickness of the display apparatus.

The invention provides a photoelectric detector and a preparation method thereof, and relates to the technical field of photoelectric detectors. The photoelectric detector comprises a substrate, a metal nanoparticle layer formed by rapid annealing a metal film layer, a metal seed crystal layer, a metal nanowire array, an insulating material, a first metal electrode and a second metal electrode. According to the photoelectric detector and the preparation method thereof provided by the invention, the metal nanoparticle layer is inserted between the metal seed crystal layer and the metal nanowirearray, so that the separation rate of photo-induced electron hole pairs in the photoelectric detector can be improved, and the illumination response speed is further improved; and by changing the material, the thickness, the annealing temperature, the annealing time and the annealing gas atmosphere of the metal film layer, the property of the metal nanoparticle layer can be changed, the absorption accuracy of the photoelectric detector on incident light is further improved, and the tunable wavelength absorption range of the incident light is realized.

The invention relates to a laser induced long-wave infrared colloidal gold test paper quantitative detection device and belongs to the technical field of analysis and detection. Based on the characteristic of long-wave infrared radiation caused by specific wavelength absorption of colloidal gold particles in colloidal gold test paper, the aim of qualitatively and quantitatively detecting the concentration of a sample is realized by adopting a long-wave infrared imaging analysis manner. The laser induced long-wave infrared colloidal gold test paper quantitative detection device comprises an infrared imaging module, a board clamping part, a test strip mounting seat, a laser device fastening sheet, a platform bracket, an enveloped outer wall structure, an acquisition and transmission module and a linear array laser device. The infrared imaging module can be used for obtaining optimal imaging position and angle by adjusting in the platform bracket. The linear array laser device is fixed in the direction vertical to the test strip mounting seat; and linear array laser covers C and T detection lines of the colloidal gold test strip. With the adoption of the laser induced long-wave infrared colloidal gold test paper quantitative detection device, the rapid quantitative detection requirements can be met by combining existing colloidal gold test strips in the market, and effectiveness judgment and sample quantitative analysis can be carried out on a sample result.

A light-absorbing layer and a bonding layer are layered on a first side of each of a belt-shaped male base portion integrated with a male portion and a female base portion integrated with a female portion on a side of the male and female base portions opposite the first side. The light-absorbing layer contains a light-absorbing material having a wavelength absorption range from 800 nm to 1200 nm to absorb a laser beam of the range. The bonding layer contains a low-melting-point resin in a form of a metallocene linear low-density polyethylene having a melting point ranging from 60 degrees C. to 120 degrees C. When the zipper tape is bonded to the base film, the laser beam is applied to heat the light-absorbing layer to melt the bonding layer. The melted bonding layer is pressure-bonded to the base film. The base film can be bonded without causing thermal degradation.

The invention relates to a dye solar battery structure and a manufacturing method of a light absorption reaction layer thereof. A base plate and a transparent base plate are arranged in a layering manner at a mutual interval; two electronic transmission layers are respectively arranged on a surface where the base plate is close to the transparent base plate; the light absorption reaction layer contains a light absorption reaction structure and a first lead which are all arranged on the surfaces of the electronic transmission layers of the transparent base plate; an antipode layer is arranged oppositely to the light absorption reaction layer; the light absorption reaction structure adopts a semiconductor layer with particles stacked from small to large; and dye molecules with different dimensions and different light wavelength absorption scopes are absorbed on the semiconductor layer and irradiated by subsequent light rays through the transparent base plate so as to result in current generated by potential difference, thereby not only improving the absorption efficiency of the light rays by adopting a three-dimensional structure, but also enlarging the frequency spectrum range absorbed by the light rays through the dye molecules with different wavelength scopes.

Providing a UV optical device with which UV in a desired wavelength region can be detected without using a band-pass filter and a waveguide, featuring less dependence on the angle of incidence, high photosensitivity, simple constitution, and enabling assembly of a stable and accurate UV detector at a low cost. The UV photo-detector comprises at least a 1st electrode layer, and a sensor layer. The 1st electrode layer comprises a semiconductor containing at least one element selected from a group of Al, Ga, and In, and nitrogen or oxygen. The sensor layer comprises a semiconductor containing at least one element selected from a group of Al, Ga, and In, and nitrogen. A long wavelength absorption edge of the 1st electrode layer is closer to the side of the short wavelength than the long wavelength absorption edge of the sensor layer.

The invention discloses a near-infrared fluorescent probe for bimodal detection of sulfur dioxide, and a preparation method and application thereof. The near-infrared fluorescent probe for bimodal detection of sulfur dioxide is a hemicyanine dye derivative, and the structure of the near-infrared fluorescent probe is shown in the specification. The fluorescent probe can be used for bimodal detection of sulfur dioxide in a water body by a colorimetric method and a ratio method, and after the sulfur dioxide reacts with the probe, two signals of probe solution color (dark blue-light powder) and fluorescence (near infrared-yellow region) are remarkably changed, so that high-selectivity and high-sensitivity dual visual detection of the sulfur dioxide in the water body is realized. The fluorescent probe provided by the invention can realize dual-channel ratio imaging and quantification of sulfur dioxide in living cells, and long-wavelength absorption and near-infrared emission of the probe can effectively avoid interference of biological background fluorescence and reduce light damage to the cells.

The invention discloses an all-fiber single-frequency pulse laser, which is characterized in that an active fiber which is introduced into a composite cavity structure and has a laser wavelength absorption characteristic is used as a saturable absorber, so that ultra-narrow-band filtering and all-fiber passive Q-switching are realized, and a single-frequency pulse all-fiber laser oscillator is obtained. According to the invention, while the frequency selection capability of the resonant cavity is enhanced, the strict requirement of single-frequency laser on the cavity length of the composite cavity is reduced, and the operation stability of a laser single longitudinal mode is improved, periodically changing cavity loss is introduced, all-fiber passive Q-switching is realized, and a single-frequency pulse all-fiber laser oscillator is obtained; the problems that an existing single-frequency pulse fiber laser is limited in working wavelength, low in laser power level and the like are solved.

A method of distinguishing a set of highly doped regions from a set of lightly doped regions on a silicon substrate is disclosed. The method includes providing the silicon substrate, the silicon substrate configured with the set of lightly doped regions and the set of highly doped regions. The method further includes illuminating the silicon substrate with an electromagnetic radiation source, the electromagnetic radiation source transmitting a wavelength of light above about 1100 nm. The method also includes measuring a wavelength absorption of the set of lightly doped regions and the set of heavily doped regions with a sensor, wherein for any wavelength above about 1100 nm, the percentage absorption of the wavelength in the lightly doped regions is substantially less than the percentage absorption of the wavelength in the heavily doped regions.

A photoelectric conversion element includes a photoelectric conversion layer to include a first metal layer, a semiconductor layer, and a second metal layer, all of which are laminated. In addition, at least one of the first metal layer and the second metal layer is a nano-mesh metal having a plurality of through holes or a dot metal having a plurality of metal dots arranged separately from each other on the semiconductor layer. The photoelectric conversion layer includes a long-wavelength absorption layer containing an impurity which is different from impurities for p-type doping and n-type doping of the semiconductor layer. The long-wavelength absorption layer is within a depth of 5 nm from the nano-mesh metal or the dot metal.

The invention discloses a multi-wavelength laser welding method for multilayer plastic and a multi-wavelength laser device. The multi-wavelength laser welding method comprises the steps that (1) lasers with the corresponding wavelengths are selected aiming at the selectivity of laser wavelength absorption of the to-be-welded multilayer plastic; (2) a semi-reflecting and semi-transmitting lens is adopted for conducting beam combination of the lasers with the different wavelengths, the lasers are coaxially focused to a to-be-welded plastic layer, and thus welding points are coaxial; and (3) a collimation focus lens is adopted for adjusting the positions of the focus points of the lasers with the different wavelengths to be consistent with different layer plastic contact faces, and the multiple layers of plastic absorb lasers and are molten simultaneously. The multi-wavelength laser device comprises a main body structure, a beam combination lens support, a beam combination lens, a two-dimensional translation adjusting frame, a two-dimensional translation adjusting frame transition plate, a first optical fiber adapter, a one-dimensional adjusting frame, a one-dimensional adjusting frame transition plate, a second optical fiber adapter switching plate, a second optical fiber adapter and a collimation lens set. According to the multi-wavelength laser welding method and the multi-wavelength laser device for the multilayer plastic, the transmittance of the upper layer plastic to the lasers does not need to be considered, and diversity of material selection is achieved.