摘要:
An article treatment system and method utilizing an air-cooled lamp and having reduced cooling requirement. A power supply responds to a sensor sensing the presence of an article at an article treating location by providing power to an air-cooled lamp, causing the lamp to project radiation onto the article at a radiation level sufficient to effectively treat the article. An air blower blows air onto the lamp, and a blower driver is responsive to the level of the power being provided to the lamp to drive the air blower at a speed blowing air onto the lamp with an air pressure having a non-linear relationship with the power level.
摘要:
The systems and methods described herein relate to solid-state light sources capable of generating radiation beams for, but not limited to, the treatment of surfaces, bulk materials, films, and coatings. The solid-state ultraviolet source optically combines the light output of at least two and preferably as many four independently controllable discrete solid-state light emitters to produce a light beam that has a controllable multi-wavelength spectrum over a wide range of wavelengths (i.e. deep UV to near-IR). Specific features of this light source permit changes in the spectral, spatial and temporal distribution of light for use in curing, surface modification and other applications.
摘要:
A power supply (1) is provided for a lamp system. The power supply (1) may include structure to switch from a high power level to a low power level. The high power level and the low power level together are a cycle that is repeated. The high power level may be higher than the conventional steady-state power level used for the same lamp system.
摘要:
An apparatus for and method of treating a volume of fluid. The apparatus includes a fluid passage (35) through which a fluid flows, at least one source of irradiation (32), external to the passageway, and at least two elongated elliptical reflecting troughs (22 and 24) for reflecting irradiation from the at least one source of irradiation onto the fluid passageway. Open ends of the troughs face each other to define a space between the closed ends of the troughs. The fluid passageway and the at least one source of irradiation are spaced from the local axes so as to produce a substantially uniform irradiation distribution within the fluid passageway.
摘要:
The invention is a microwave powered lamp (10). The lamp includes a light reflective cavity (28); an electrodeless bulb (16) contained in the light reflective cavity (26) from which light is emitted when the electrodeless bulb is excited by microwaves; a magnetron (12) for providing the microwaves for exciting the electrodeless bulb; a waveguide (14) which couples the microwaves emitted by the magnetron to the light reflective cavity for exciting the electrodeless bulb; a housing (22) which contains the lamp; a detector (102, 202) disposed within the housing, which detects the microwaves which are not coupled to the bulb during operation of the magnetron and outputs a signal indicative of a level of received microwaves; and a magnetron control (300), coupled to the detector, which causes the magnetron to be turned off when a level of the signal indicates the level of received microwaves exceeds a threshold.
摘要:
A method of polymerizing by a free radical polymerization mechanism, product formed thereby, and apparatus for performing this method, are disclosed. The composition to be polymerized by the free radical polymerization mechanism is irradiated by a substantially constant radiation, the radiation being substantially without pulsation. The use of the substantially constant radiation without pulsation reduces premature termination of the polymerization. The substantially constant radiation can be output of a lamp powered by a constant current, direct current power supply.
摘要:
A discharge lamp bulb includes a light transmissive envelope and at least one conductive fiber disposed on a wall of the envelope, where the fiber has a thickness of less than 100 microns. The lamp may be either electrodeless or may include internal electrodes. Suitable materials for the fiber(s) include but are not limited to carbon, silicon carbide, aluminium, tantalum, molybdenum, platinum, and tungsten. Silicon carbide whiskers and platinum coated silicon carbide fibers may also be used. The fiber(s) may be aligned with the electrical field, at least during starting. The lamp preferably further includes a protective material covering the fiber(s). For example the protective material may be a sol gel deposited silica coating. Noble gases inside the bulb at pressures in excess of 300 Torr can be reliably ignited at applied electric field strengths of less than 4 x 10 V/m. Over 2000 Torr xenon, krypton, and argon respectively achieve breakdown with an applied field of less than 3 x 10 V/m.
摘要:
The present invention concerns a lamp structure comprising elliptical reflectors (3, 9) for uniformly irradiating the surfaces of a work piece (5) like an optical fiber, as well as a method for using this lamp structure.