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 dependent control from the LED emitting UVC light.

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; and
  • a 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 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 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.