3642 results about "Photo irradiation" patented technology

A method for managing UV irradiation for treating substrates in the course of treating multiple substrates consecutively with UV light, includes: exposing a first UV sensor to the UV light at first intervals to measure illumination intensity of the UV light so as to adjust the illumination intensity to a desired level based on the measured illumination intensity; and exposing a second UV sensor to the UV light at second intervals to measure illumination intensity of the UV light so as to calibrate the first UV sensor by equalizing the illumination intensity measured by the first UV sensor substantially with the illumination intensity measured by the second UV sensor, wherein each second interval is longer than each first interval.

An apparatus includes an optical transmission unit which irradiates a subject to be examined with light containing a specific wavelength component, an electroacoustic conversion unit which receives acoustic waves generated inside the subject by the light radiated by the optical transmission unit and converts them into electrical signals, an image data generating unit which generates first image data on the basis of the reception signals obtained by the electroacoustic conversion unit, an electroacoustic conversion unit which receives ultrasonic reflection signals obtained by transmitting ultrasonic waves to the subject and converts them into electrical signals, an image data generating unit which generates second image data on the basis of the reception signals obtained by the electroacoustic conversion unit, and a display unit which combines the first and second image data and displays the resultant data.

An electro-optic window is provided which is powered solely by at least one discrete photovoltaic cell within an electro-optic window. The electro-optic window has front and back spaced-apart glass elements sealably bonded together in a spaced-apart relationship and defining a chamber filled with an electro-optic material. The front glass element has a transparent conductive layer on the face of the front glass element confronting the rear glass element and the rear glass element has a transparent conductive layer on the face confronting the front glass element. The seal is generally disposed along the perimeter of three edges of both glass elements and some distance in from the remaining (fourth) edge. The photovoltaic assembly is electrically connected to the two transparent conductive layers and is placed on the outer perimeter along this fourth edge with the photon-absorbing side of all the photovoltaic cells within the photovoltaic assembly facing in one direction ("out" the window). When light impinges on the photovoltaic cell a current is created which darkens the electro-optic material in proportion to the amount of impinging light. By choosing the relative area of the photovoltaic assembly to produce the correct current for the electro-optically active window area, the darkening of the electro-optic portion can be directly and accurately controlled without the need for any circuit, wires or shorting resistors. In addition, an apparatus for making an electro-optic window having two members capable of securing and holding two glass elements in a spaced-apart and parallel relationship is provided. The glass elements may be secured by vacuum-applying members or simple clips. The glass elements may be held in a spaced-apart and parallel relationship by a hydraulic mechanism or by simple spacers placed between the securing members.

A method for transferring a thin film device on a substrate onto a transfer member, includes a step for forming a separation layer on the substrate, a step for forming a transferred layer including the thin film device on the separation layer, a step for adhering the transferred layer including the thin film device to the transfer member with an adhesive layer therebetween, a step for irradiating the separation layer,with light so as to form internal and / or interfacial exfoliation of the separation layer, and a step for detaching the substrate from the separation layer.

An image detection apparatus comprises a light source and a holding apparatus adapted to hold a substrate on which a biological sample may be mounted. Light from the light source impinges on the biological sample and causes light that is representative of the sample to be emitted from the sample. A light detector is positioned in the path of the emitted light and is scanned across the emitted light. The emitted light may be focused on the light detector with an optical assembly. The emitted light may be generated by chromophores on probes in the biological sample.

Provided are an infrared (Ir) face authentication apparatus, and a portable terminal and a security apparatus including the Ir face authentication apparatus. The Ir face authentication apparatus includes: a light source irradiating Ir light having a wavelength of 760 nm or higher onto a face; an imaging unit detecting reflected light of the Ir light to output an Ir image; and an authenticator performing authentication of the face using the Ir image. The Ir face authentication apparatus further includes a display displaying the Ir image output from the imaging unit, and the image unit and the display are installed on the same surface.

A method of forming a three-dimensional object is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; (b) filling the build region with a polymerizable liquid, (c) irradiating the build region with light through the optically transparent member and also advancing the carrier away from the build surface to form a three-dimensional solidified polymer object from the polymerizable liquid. The irradiating is carried out with both: (i) an excitation light at a first wavelength that polymerizes the polymerizable liquid, and (ii) a depletion light at a second wavelength, different from the first wavelength, that inhibits the polymerization of the polymerizable liquid. At least one of the excitation and depletion lights is temporally and / or spatially modulated to form the three-dimensional object.

Compositions capable of simultaneous two-photon absorption and higher order absorptivities are disclosed. Many of these compositions are compounds satisfying the formulae D-Π-D, A-Π-A, D-A-D and A-D-A, wherein D is an electron donor group, A is an electron acceptor group and Π comprises a bridge of pi-conjugated bonds connecting the electron donor groups and electron acceptor groups. In A-D-A and D-A-D compounds, the pi bridge is substituted with electron donor groups and electron acceptor groups, respectively. Also disclosed are methods that generate an electronically excited state of a compound, including those satisfying one of these formulae. The electronically excited state is achieved in a method that includes irradiating the compound with light. Then, the compound is converted to a multi-photon electronically excited state upon simultaneous absorption of at least two photons of light. The sum of the energies of all of the absorbed photons is greater than or equal to the transition energy from a ground state of the compound to the multi-photon excited state. The energy of each absorbed photon is less than the transition energy between the ground state and the lowest single-photon excited state of the compound is less than the transition energy between the multi-photon excited state and the ground state.

A measurement system and method are presented for use in detecting a predetermined condition of a patient's ear indicative of a certain disease such as SOM and SOM. The system comprises an optical measuring unit and a control unit connectable to the output of the measuring unit. The optical measuring unit is configured and operable for irradiating a region of interest in a patient's ear with incident light including at least two different wavelengths, detecting light responses of the region of interest to said at least two different wavelengths, and producing measured data indicative thereof. The at least two different wavelengths are selected such that the light response of the region of interest to at least one first wavelength is substantially independent of said predetermined condition and the light response to at least one second wavelength is affected by said predetermined condition. The control unit is operable for receiving and processing the measured data to generate output data indicative of the measurement results. The control unit is configured and operable for controlling operation of the optical measuring unit, and for receiving the measured data and processing it to generate output data indicative of whether or not said predetermined condition exists. The control unit comprises a memory utility for storing predetermined reference data indicative of the light response of the region of interest while in a healthy condition of a patient's ear; a data processing and analyzing utility preprogrammed for processing and analyzing the measured data by determining a relation between the measured light responses and the corresponding reference data.

An OCT probe has a sheath to be inserted into a subject; and an optical system within the sheath, for changing the direction of light which propagates from a light source through an optical fiber to irradiate the light onto the subject through a transparent portion of the sheath, and for reflecting the light beam, which is reflected by the subject, to guide the light into the optical fiber. A light output surface, for causing the light to be output from the reflecting surface in a direction obliquely inclined with respect to the inner surface of the sheath, and a reflected light sheath entrance preventing portion, for preventing light reflected by the inner surface of the sheath from entering the optical fiber, are provided in the optical system. The reflected light sheath entrance preventing portion may be formed by providing a cut planar surface portion on the lens.

A display panel includes: a first substrate; light-emitting elements on a region of the first substrate; a second substrate facing the first substrate with the light-emitting elements therebetween; a glass frit between the first substrate and the second substrate so as to surround the region of the first substrate in which the light-emitting elements are disposed, the glass frit providing a hermetic seal between the first substrate and the second substrate; and a light-shielding part formed on one of the first substrate and the second substrate so as to extend along the glass frit, the light-shielding part shielding light. The light-shielding part has a lower light-shielding property in a region corresponding to the outer region of the glass frit than in a region corresponding to the inner region of the glass frit. The glass frit has been irradiated with light through the light-shielding part.

A broad bandwidth light source including: a solid state light emitting device that generates short wavelength light; and quantum dot material and phosphor material that are each irradiated by some of the short wavelength light. The short wavelength light has a spectrum with a first peak wavelength shorter than about 500 nm. The quantum dot material absorbs some of the short wavelength light and reemits it as long wavelength light having a spectrum with a second peak wavelength longer than about 600 nm. The phosphor material absorbs some of the short wavelength light and reemits it as mid wavelength light having a spectrum with a peak wavelength between the first and second peak wavelength. The light source is configured such that some of each light (short, mid, and long wavelength) is emitted coincidently as a light having a chromaticity value near the blackbody locus and a color rendering index greater than 80.

An active (laser-illuminated) imaging system is described that is suitable for use in backscatter absorption gas imaging (BAGI). A BAGI imager operates by imaging a scene as it is illuminated with radiation that is absorbed by the gas to be detected. Gases become "visible" in the image when they attenuate the illumination creating a shadow in the image. This disclosure describes a BAGI imager that operates in a linescanned manner using a high repetition rate pulsed laser as its illumination source. The format of this system allows differential imaging, in which the scene is illuminated with light at least 2 wavelengths-one or more absorbed by the gas and one or more not absorbed. The system is designed to accomplish imaging in a manner that is insensitive to motion of the camera, so that it can be held in the hand of an operator or operated from a moving vehicle.

A method of forming a three-dimensional object of polyurethane, polyurea, or copolymer thereof is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; (b) filling the build region with a polymerizable liquid, the polymerizable liquid including at least one of: (i) a blocked or reactive blocked prepolymer, (ii) a blocked or reactive blocked diisocyanate, or (iii) a blocked or reactive blocked diisocyanate chain extender; (c) irradiating the build region with light through the optically transparent member to form a solid blocked polymer scaffold and advancing the carrier away from the build surface to form a three-dimensional intermediate having the same shape as, or a shape to be imparted to, the three-dimensional object, with the intermediate containing the chain extender; and then (d) heating or microwave irradiating the three-dimensional intermediate sufficiently to form from the three-dimensional intermediate the three-dimensional object of polyurethane, polyurea, or copolymer thereof.

The present invention relates to a process for detecting a leak in a package. The process comprises preparing a package by covering at least a portion of an O2-sensitive product with a multilayer film comprising (i) a leak-indicator layer in which a O2-sensitive indicator is present throughout the leak-indicator layer; and (ii) an O2-barrier layer outward of the leak-indicator layer. A low O2-environment is provided within the package. The leak-indicator layer is then illuminated with light containing a wavelength absorbed by the O2-sensitive indicator, so that the O2-sensitive indicator produces an emission of radiation in an amount inversely proportional to a level of O2 present with the O2-sensitive indicator. Then the multilayer film is scanned while the O2-sensitive indicator is emitting radiation, the scanning being carried out by sensing and comparing the amount of radiation emitted from at least two different regions of the multilayer film.

An interior space of an automobile includes a maplamp unit and a plurality of functional units. The maplamp unit is provided on a ceiling of the interior space and is adapted to emit an ultraviolet light therefrom toward and upon a predetermined area of irradiation by the ultraviolet light. The functional units are spaced from each other and yet provided such that they all reside within the irradiation area. The functional units may include a combination meter, a navigation device, an air conditioner operating area, a power window switch area, and a small article placing area. These functional units each include at least one luminescent symbol. The luminescent symbol is adapted to become luminous when irradiated by the ultraviolet light emitted by the maplamp unit.

The invention belongs to the field of decorative materials, and particularly relates to an ultraviolet light cured transfer printing film and a preparation method and application thereof. The preparation method comprises the following steps of: uniformly coating or printing a mold release agent on a base load film, and performing infrared curing; uniformly coating or printing an ultraviolet light cured printing ink with a patterning function on a mold release agent layer, and performing curing through ultraviolet irradiation; or uniformly coating or printing an ultraviolet cured protective layer coating with anti-scratching and wear-resistant functions on the mold release agent layer first, then uniformly coating or printing the ultraviolet light cured printing ink with the patterning function on the mold release agent layer after the curing through the ultraviolet irradiation, and performing the curing through the ultraviolet irradiation; and uniformly coating or printing an ultraviolet light cured bottom color coating on an ultraviolet light cured printing ink decorative pattern layer, and performing the curing through the ultraviolet irradiation to obtain the ultraviolet light cured transfer printing film which can be used for producing an ultraviolet light cured transfer printing film decorative board. The ultraviolet light cured transfer printing film has high material strength, and has the advantages of high weathering resistance, high environmental protection, rich colors and patterns, full lacquer film, high hardness, scratch resistance, easy cleaning, noninflammability and the like.

A light source system comprising projection optics, which are capable of producing a far-field image of a light source. The light source comprises a fluorescent medium that when illuminated by light from laser emitters of a first waveband emits light of a second or more wavebands of longer wavelength. The resulting light emission produces a colour perceived as white. The light source is illuminated by a plurality of laser emitters arranged to illuminate the light source in an array-like manner. Control of the output of one or more of the laser emitters results in a variation of the spatial emission distribution from the light source and hence a variation of the far-field beam spot distribution via non-mechanical means.

There is provided a method and a device of monitoring oil oxidation in real time. The method of the present invention comprises the steps of: irradiating ultraviolet light into oil to be monitored; measuring fluorescence emission intensity of the oil in red, green and blue wavelength bands; determining one value measured in a relatively long wavelength band and the other value measured in a relatively short wavelength band among the fluorescence emission intensity measured in the red, green and blue wavelength bands; calculating a fluorescence emission ratio which is defined as a ratio of the value measured in the relatively long wavelength band to the value measured in the relatively short wavelength band; and monitoring a change in the fluorescence emission ratio. It is then determined whether the fluorescence emission ratio reaches a predetermined critical magnitude. When the fluorescence emission ratio reaches the critical magnitude, the necessity of replacing the oil with new one is indicated.

The present invention discloses a fluid purification and disinfection system, which includes a housing, an ultraviolet lamp and a photocatalytic oxidation device. Said housing therein is an enclosed case that is fitted with an inlet and an outlet. Furthermore, said ultraviolet lamp is mounted inside the housing. Said photocatalytic oxidation device is a disinfection core coated with photocatalyst. Said disinfection core is installed around said ultraviolet lamp, and is fixed onto said housing. Said photocatalyst therein is titanium dioxide. The working principle of the fluid purification and disinfection device in accordance with the present invention is to utilize ultraviolet light to irradiate the titanium dioxide-coated surface of the photocatalytic oxidation device to generate the photocatalytic oxidation process. As a result, Escherichia coli, Vibriocholerae and pathogenic organisms that contact the surface of photocatalytic oxidation device can be quickly killed, and contaminants in the fluid can be eliminated. By this way, water or fluid that flows through said disinfection device is disinfected and purified.

The disclosure concerns altering the mechanical and / or chemical property of a body tissue, particularly an ocular tissue. In specific cases, it concerns altering or stabilizing the shape of the cornea, such as in a subject suffering or at risk for ectasia or keratoconus. In other specific cases, it concerns strengthening the sclera in a subject suffering or at risk for myopia. The invention employs light irradiation of a photoactivatable compound, such as one that applies crosslinking to the tissue, for example.

A method for cutting a strengthened glass sheet through laser irradiation. The sheet includes a front surface layer and back surface layer each having a residual compressive stress and an intermediate layer which is formed therebetween and has an internal residual tensile stress CT (MPa). A strain energy UCT (J / m2) expressed by UCT={CT2×(t1−2×DOL)} / (2×Y) is 2.5 J / m2 or more. A cutting index K (N / mm) expressed by K=Pe / v×exp(−α×t2)×(Y×αL) / (t2×ρ×c) is 150 N / mm or less.

A positioning appliance adapted to facilitate an orthodontics procedure in which a bracket or other orthodontic component is placed at a desired site on the surface of a tooth and affixed thereto. The appliance comprises a hand-held tubular wand that has a protective sleeve section and a camera section telescoped in the sleeve section. A window is mounted at the front end of the sleeve section and a finger projecting therefrom is adapted to hold the bracket at a position abutting the tooth surface. A camera is housed in the camera section to capture through the window an image of the bracket on the surface of the tooth. One or more light sources are housed in the camera section, for irradiating the bracket and the tooth surface with light detectable by the camera. Additional one or more light sources are housed in the camera section and are capable of irradiates light at a wavelength that can cure an adhesive used for affixing the bracket or other orthodontic component to the surface of a tooth.

A system and method for measuring one or more light-absorption related blood analyte concentration parameters of a mammalian subject, is disclosed. In some embodiments, the system comprises: a) a photoplethysmography (PPG) device configured to effect a PPG measurement by illuminating skin of the subject with at least two distinct wavelengths of light and determining relative absorbance at each of the wavelengths; b) a dynamic light scattering measurement (DLS) device configured to effect a DLS measurement of the subject to rheologically measure a pulse parameter of the subject; and c) electronic circuitry configured to: i) temporally correlating the results of the PPG and DLS measurements; and ii) accordance with the temporal correlation between the PPG and DLS measurements, assessing value(s) of the one or more light-absorption related blood analyte concentration parameter(s).

The present discovery uses monomers which contain reversible photo-crosslinkable groups in addition to primary polymerizable groups. The mechanical properties of these materials and the reversibility of the photo-activated shape memory effect demonstrate the effectiveness of using photo-irradiation to effect change in modulus and shape memory effect. In the preferred embodiment the reaction mixture includes a photo-reactive monomer comprising a photo reactive group and a polymerizable group; a second monomer, which is more preferably a mixture of monomers, which are acrylate based; a multi-functional crosslinking agent, preferably 1,6 hexanediol diacrylate (HDODA); an initiator, preferably a free radical initiator; and a fifth, optional, component which is a modifying polymer. The mixture of the second monomer, crosslinking agent, and initiator comprise the base polymer matrix into which the photo-reactive monomer is incorporated. The polymeriziable group of the photo reactive monomer allows the photo reactive monomer to polymerize with the base polymer matrix.

The invention relates to a photo-induced reversible self-repair polyurethane film and a preparation method and a repair method thereof. The polyurethane film mainly comprises 10 to 40 parts of phenolic hydroxyl coumarin derivative, 10 to 50 parts of alkyl bromal compound, 10 to 40 parts of polyisocyanate, and 10 to 30 parts of polyether polyol or polyester polyol. The preparation method comprises the following steps of: generating phenolic hydroxyl coumarin by using the phenolic hydroxyl coumarin derivative and the alkyl bromal compound under the action of absolute potassium carbonate; and reacting the phenolic hydroxyl coumarin, the polyisocyanate and the polyether polyol or the polyester polyol to obtain polyurethane solution, and performing cross linking under the irradiation of ultraviolet with wavelength of 350 nanometers after the film is formed to obtain the polyurethane film. The damaged surface is irradiated through the ultraviolet with wavelength of 254 to 350 nanometers, so that the reduced coumarin monomers are subjected to dimer cross linking reaction again and the purpose of repairing cracks is fulfilled. Compared with the prior art, the polyurethane film has the characteristics of good film forming property and high transparency; and the repair process is simple and has low cost.

An ink-jet recording device which is equipped with a recording head to eject one type or plural types of inks containing a photo-curable component onto a recording medium and a light irradiation device to cure the ink by irradiating light onto the ink having deposited on the recording medium, wherein ink quantity cured by one time light irradiation is not less than 5 g / m2, and an amount of a photo-polymerization initiator in the ink is not more than 5 weight % based on the total weight of the ink.

The present invention is a method of manufacturing a liquid crystal display device, wherein light having an exposure energy is irradiated on the surface of a photo-sensitive resin layer having a predetermined film thickness, and a distribution of thermal deformation characteristics in the thickness direction (or the plane direction) of the photo-sensitive resin layer is formed, then heat treatment is performed to form random undulation (micro-grooves or micro-wrinkles) on the surface of the photo-sensitive resin layer.

An exposure method comprising the steps of forming onto a mask that arranges a pattern of a contact hole and a plurality of patterns each being smaller than the contact hole pattern, and illuminating the mask using plural kinds of light so as to resolve the desired pattern without the smaller patterns on a target via a projection optical system.