42 results about "Uva light" patented technology

A device and a method for delivering UVA light to the mouth in which a photocatalytic agent is distributed in the mouth and a UVA light source is located contiguously to the head of the device so that the photocatalytic agent distributed in the mouth is efficiently activated by UVA light produced by the device. The UVA light delivery device of the invention may be, inter alia, a toothbrush, a tongue scraper, an interdental toothbrush, a denture brush, a flossing device, a dental hand tool, or a wand adapted exclusively to applying UVA light to photocatalyst coated surfaces.

The invention relates to a skin tanning chamber, the improvement comprising at least one light emitting diode emitting a UVA light, such as a UVA LED that emits essentially only UVA. Additionally, multiple LEDs of varying types with various characteristic wavelengths are controlled independently to produce an arbitrary light pattern in an arbitrary sequence over time. The chamber can be rigid or flexible. It can be a bed, booth or incorporated into a flexible form, such as a garment or cloth. In one embodiment, the chamber further comprises at least one LED emitting a UVC light, whereby the UVC light sanitizes the chamber surface. Preferably the LED emitting the UVA light is under independent control from the LED emitting UVC light.

Bacteria in water 9 exposed outdoors are effectively killed with ultraviolet (UV) light by suppressing post-treatment increase in the bacteria population due to photoreactivation. The apparatus shines UV light on the water 9 to kill bacteria and has UV light emitting diodes (LEDs) 1 that emit UVA light with a primary emission peak of 320 nm-400 nm. The antibacterial action of the UVA light emitted by the UV LEDs 1 prevents proliferation of bacteria in the disinfected water 9 due to photoreactivation.

The invention relates to a skin tanning chamber, the improvement comprising at least one light emitting diode emitting a UVA light, such as a UVA LED that emits essentially only UVA. Additionally, multiple LEDs of varying types with various characteristic wavelengths are controlled independently to produce an arbitrary light pattern in an arbitrary sequence over time. The chamber can be rigid or flexible. It can be a bed, booth or incorporated into a flexible form, such as a garment or cloth. In one embodiment, the chamber further comprises at least one LED emitting a UVC light, whereby the UVC light sanitizes the chamber surface. Preferably the LED emitting the UVA light is under dependent control from the LED emitting UVC light.

Bacteria in water 9 exposed outdoors are effectively killed with ultraviolet (UV) light by suppressing post-treatment increase in the bacteria population due to photoreactivation. The apparatus shines UV light on the water 9 to kill bacteria and has UV light emitting diodes (LEDs) 1 that emit UVA light with a primary emission peak of 320 nm-400 nm. The antibacterial action of the UVA light emitted by the UV LEDs 1 prevents proliferation of bacteria in the disinfected water 9 due to photoreactivation.

The present invention refers to a Laser therapy system and a method for treatment of a sclera / conjunctiva of an eye, comprising:a dispenser for a photosensitizer agent;a 3D imaging unit;an image processing unit being adapted to recognize the collagen tissue structure and to determine a thickness thereof;a UVA light source being adapted to a crosslinking of the collagen tissue;a second Laser light source being adapted to be absorbed mainly by varicose blood vessels;an optical system for deflecting and focusing the UVA light and the second Laser light on a focus point within the sclera / conjunctiva;a processing and control unit being adapted to determinea target thickness and a thickness deviation;a pattern for an application of the UVA light energy;a UVA light energy to effect a growth of the collagen tissue structure until the target thickness is achieved.

The invention relates to a skin tanning chamber, the improvement comprising at least one light emitting diode emitting a UVA light, such as a UVA LED that emits essentially only UVA. Additionally, multiple LEDs of varying types with various characteristic wavelengths are controlled independently to produce an arbitrary light pattern in an arbitrary sequence over time. The chamber can be rigid or flexible. It can be a bed, booth or incorporated into a flexible form, such as a garment or cloth. In one embodiment, the chamber further comprises at least one LED emitting a UVC light, whereby the UVC light sanitizes the chamber surface. Preferably the LED emitting the UVA light is under independent control from the LED emitting UVC light.

The present invention refers to a Laser therapy system and a method for a treatment of a cornea and / or sclera of an eye to correct its refractive system, comprising:a dispenser for a photosensitizer agent;a 3D imaging unit;an image processing unit adapted to recognize a first collagen tissue structure and a first orientation of respective collagen fibers therein;a UVA light source adapted to a crosslinking within the collagen tissue structure;an optical system for deflecting and focusing the UVA light on a focus point behind an aperture within the imaging volume; anda processing and control unit adapted to receive data relating to a refractive error of the eye, to determine a second collagen tissue structure with new corrective collagen crosslinks, such as to achieve a minimized refractive error of the eye and a UVA light energy to induce the new corrective collagen crosslinks.

Provided is a pesticide detection device including a housing body, a light source module, a focal scanning system, a miniature spectrograph, and a control switch. The light source module is arranged in the housing body to project white light beam, a UVA light beam, or a UVB light beam. The focal scanning system is arranged in the housing body to focus the light beam projected by the light source module and to enable the light beam to scan an object to be detected. The miniature spectrograph is used for receiving the light beam projected by the object to be detected and analyses the pesticide residual quantity based on the light beam. The control switch is arranged at the housing body and is electrically connected with the focal scanning system. The light source module is controlled by the control switch to project the white light beam, the UVA light beam and the UVB light beam to the object to be detected, so that the pesticide residual quantity on the object to be detected can be analyzed out. The pesticide detection device provided not only can rapidly detect out the pesticide residual quantity, but also can greatly increase the accuracy of the pesticide residual quantity.

Provided is a three-dimensional printing composition including decellularized extracellular matrix; and riboflavin as a crosslinking agent. A three-dimensional structure having high mechanical strength can be prepared by performing a printing process using the three-dimensional printing composition according to the present invention and a layer-by-layer process through crosslinking under UVA light to prepare a three-dimensional structure configuration; and then performing thermal gelation of the three-dimensional structure configuration. Further provided is a method for preparing said three-dimensional printing composition and a method for preparing a three-dimensional structure using said three-dimensional printing composition.

A system for healing and / or disinfecting wounds and burns includes an emitter including one or more blue light sources configured to emit blue light at a therapeutic energy level at a wound or burn area of a human or animal subject and one or more ultraviolet-A (UVA) light sources configured to emit UVA light at a therapeutic energy level at the wound or burn area. A controller coupled to the emitter is configured to control the therapeutic energy level of the blue light and the UVA light and one or more parameters associated with the blue light and the UVA light to produce a photobiomodulation effect in order to induce a cytokine response in cells of the wound or burn area to elicit recruitment and proliferation of cells to promote healing of the wound or burn area.

A system that captures and eliminates indoor pollutants and chemical and biological agents within a HVAC system by breaking down the pollutants and chemical and biological threats into non-hazardous molecules. The surface area created by crystalline titanium dioxide nano-structures results in highly effective elimination rates when catalytic ionization by UV exposure occurs. The catalyst is activated with UVA light.

The invention provides a conveying belt type animal phototoxicity rapid tester. The conveying belt type animal phototoxicity rapid tester comprises an illumination cabin and a conveying toothed belt which are mounted on a fixed platform provided with a movable supporting assembly, tested mouse cages for experimental animals can be fixedly mounted on a plurality of spring supports on the conveyingtoothed belt of which the rotating speed is controlled by a stepping motor, when the tested mouse cages move to the illumination cabin, an entering valve and an exiting valve can be automatically opened and closed, a UV light source assembly in the illumination cabin emits 365 nm of a UVA light source with single wavelength and proper strength to carry out phototoxicity illumination experiment onthe experimental animals, soft sun blinds are mounted on the periphery of the bottom of the illumination cabin to ensure UVA light source purity and light strength accuracy during experiment, parameters such as processes and results of various tests or experimental reports printed by a printer are controlled and recorded by a computer controller in the experiment. The conveying belt type animal phototoxicity rapid tester has the beneficial effects that a phototoxicity illumination experiment for small animals can be rapidly and automatically finished. Light intensity and irradiation time whichare required for the tests can be controlled automatically, stray light interference is small, the experimental efficiency is improved, and experimental data are accurate and reliable.

The present invention refers to a Laser therapy system and a method for treatment of a sclera / conjunctiva of an eye, comprising:a dispenser for a photosensitizer agent;a 3D imaging unit;an image processing unit being adapted to recognize the collagen tissue structure and to determine a thickness thereof;a UVA light source being adapted to a crosslinking of the collagen tissue;a second Laser light source being adapted to be absorbed mainly by varicose blood vessels;an optical system for deflecting and focusing the UVA light and the second Laser light on a focus point within the sclera / conjunctiva;a processing and control unit being adapted to determinea target thickness and a thickness deviation;a pattern for an application of the UVA light energy;a UVA light energy to effect a growth of the collagen tissue structure until the target thickness is achieved.

A lamp having improved insect attraction is provided. The lamp has a light-transmissive envelope being substantially free of cerium. The lamp also has a phosphor layer comprising at least one phosphor having an emission band in the UVA light region for attracting insects. The at least one phosphor of the phosphor layer desirably has an emission spectrum in the UVA region that sufficiently matches an insect's eye sensitivity curve. For instance, the at least one phosphor can have an emission band in the UVA wavelength range of 320 to 400 nm, wherein said emission band has a maximum between 325 to 365 nm.

The invention relates to a crosslinking device for the riboflavin-UV sclera crosslinking method. The device comprises a light source system, an operation head, and an optical fiber for connecting the light source system and the operation head, wherein the light source comprises an UAV light source and a red LED light source; the operation head comprises a light guide plate, more than one end lighting optical fiber which is fixedly connected with the rear wall of the light guide plate, and side lighting optical fibers which are fixedly connected to the left wall and the right wall of the light guide plate; reflecting films cover the upper wall, the lower wall, the left wall and the right wall of the light guide plate; the end lighting optical fibers are connected with the UAV light source; the side lighting optical fibers are connected with the LED light source. The device is high in flexibility and can achieve minimally invasive operation during performing the riboflavin-UV sclera crosslinking method.

The invention provides a solar blind ultraviolet photodetector based on a beta-Ga2O3 / FTO heterojunction, comprising a beta-Ga2O3 film, an FTO conductive glass and an electrode, wherein the beta-Ga2O3film is placed on the FTO conductive glass to form a heterojunction, and an electrode is disposed on each of the beta-Ga2O3 film and the FTO conductive glass. The invention also proposes a preparationmethod and application of a solar blind ultraviolet photodetector based on a beta-Ga2O3 / FTO heterojunction. The solar blind ultraviolet photodetector based on a beta-Ga2O3 / FTO heterojunction proposedby the invention can effectively penetrate the visible light while effectively detecting UVC signals and effectively filtering part of the UVB and UVA light. The invention provides theoretical and technical support for the application of the solar blind ultraviolet photodetector based on a beta-Ga2O3 / FTO heterojunction.

The invention discloses an UVA solidification control system having a concentrated and distributing framework, and a control method thereof; the UVA solidification control system comprises a centralized controller, a plurality of UVA LED light source modules, an AC / DC power supply module, a display module and a heat radiation device; each UVA LED light source module comprises an UVA light source,a DC / DC UVA power supply module, a UVA power supply and a temperature detection module; the centralized controller is respectively electrically connected with the display module, the heat radiation device, each UVA power supply, and the temperature detection module; each DC / DC UVA power supply module is respectively electrically connected with each UVA light source and each UVA power supply, and the temperature detection module. The advantages are that the system can prevent the multi-stranded conductor problems of a complete distributing framework, thus improving the system stability, preventing violent temperature impact, reducing UV LED light failure, and prolonging the UV LED service life.

The invention discloses a photosensitive crosslinking agent and a preparation method and application of the photosensitive crosslinking agent. The photosensitive crosslinking agent is a branch-shapedp-benzoquinone crosslinking agent. The prepared crosslinking agent realizes the effective crosslinking process within a very short period of time of illumination through the irradiation of UVA light under the conditions of no catalysts and no byproducts. By adopting the photo-crosslinking method provided by the invention, a crosslinking polymer material is prepared only by ultraviolet radiation after simply mixing the crosslinking agent and a matrix material. An obtained crosslinking insulating layer material is suitable for preparing various organic field effect transistor devices through a solution method, and is a crosslinking polymer insulating layer material with excellent performances. An obtained crosslinking hole conduction layer material is suitable for preparing an organic film in various organic electroluminescent displays through the solution method, and is a crosslinking polymer hole conduction layer material with excellent performances.

A hyphae inhibition apparatus irradiates an organism having hyphae with light to inhibit growth of the hyphae. The hyphae inhibition apparatus includes a first light source generator, including at least one of a violet light source that emits light having a peak wavelength in a range of from 380 nm to 410 nm, inclusive, or a UVB light source that emits light having a peak wavelength in a range of from at least 280 nm to below 350 nm. The hyphae inhibition apparatus also includes a second light source generator, including at least one of a blue light source that emits light having a peak wavelength in a range of from at least 350 nm to below 380 nm or a UVA light source that emits light having a peak wavelength in a range of from 415 nm to 480 nm, inclusive.

The invention discloses a lighting device for cultivating succulent plants. The lighting device comprises a lamp holder, a metal hose arranged on the edge of the lamp holder, and a lighting mechanism arranged at the end of the metal hose. The lighting mechanism comprises a base and a light fill-in lamp. The light fill-in lamp comprises a set of UVB light fill-in lamps, a set of UVA light fill-in lamps and a set of red and blue light lamps. The set of UVB light fill-in lamps, the set of UVA light fill-in lamps and the set of red and blue light lamps are all connected with independent control buttons. The design is used for light fill-in of the succulent plants, and all sorts of required lamplight can be supplemented according to the self-condition of the succulent plants. The lamp holder can be used for placing flowerpots, the lighting direction and height can be adjusted freely through the metal hose, different modellings can be made, and therefore the overall attractiveness is improved. Through the design, using is convenient, and applicability is good.

The invention relates to a UVA (ultraviolet a) power generation device. UVA is utilized as an energy source, and UVA light with high energy is converted into electric energy through a photoelectric effect; compared with a common solar power generation system, the UVA power generation device using UVA as the energy source has the advantages of large current density, relatively stable energy source and the like; a UVA capturing membrane is a complex adopting a graphene material and a silicon carbide or zinc oxide porous membrane, and has very strong capturing ability for UV rays; a fused quartz lens array has a very strong aggregation effect for UV light; a cobalt-free P-type calcium nitride has a good photoelectric converting effect.