Abstract:
A wafer inspection system includes a laser sustained plasma (LSP) light source that generates light with sufficient radiance to enable bright field inspection. Reliability of the LSP light source is improved by introducing an amount of water into the bulb containing the gas mixture that generates the plasma. Radiation generated by the plasma includes substantial radiance in a wavelength range below approximately 190 nanometers that causes damage to the materials used to construct the bulb. The water vapor acts as an absorber of radiation generated by the plasma in the wavelength range that causes damage. In some examples, a predetermined amount of water is introduced into the bulb to provide sufficient absorption. In some other examples, the temperature of a portion of the bulb containing an amount of condensed water is regulate to produce the desired partial pressure of water in the bulb.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Blitzlichterzeugung mit hoher Leistungsdichte im UV-Bereich unter Verwendung einer Blitzlichtlampe (1), sowie der Blitzlichtlampe (1) selbst. Die Blitzlichtlampe (1) weist einen zumindest teilweise lichtdurchlässigen Außenkolben (2) auf, der ein mit einer ionisierbaren Gasmischung (5) gefülltes Entladungsgefäß (4) und eine Zündungsvorrichtung (6) umgibt. Dabei ist nahe dem Entladungsgefäß (4) eine Temperiervorrichtung angeordnet, wobei die Temperiervorrichtung dazu ausgebildet ist, die ionisierbaren Gasmischung (5) vor der Anregung auf eine vorbestimmte Vorwärmtemperatur zu erwärmen.
Abstract:
A laser-driven light source encompasses a chamber for accommodating an ionizable gas and an ignition source for ionizing the gas in the chamber for generating a plasma. The light source furthermore encompasses a laser for inputting laser energy into the plasma such that, under the impact of the laser radiation, the plasma emits useful light, which forms the output signal of the light source, wherein provision is made for means for coupling the useful light into a transferring optical fiber. In the case of the light source according to the invention, at least one mode scrambler is assigned to the optical fiber or the optical fibers.
Abstract:
A light-emitting discharge tube in which an outer wall surface of a glass tube is made less susceptible to flaws by forming a protective film on the outer wall surface of the glass tube, a method of fabricating the light-emitting discharge tube, and a protective film forming apparatus are provided. The light-emitting discharge tube defines light-emitting discharge regions by a plurality of external electrodes. The outer wall surface of the light-emitting discharge tube (the glass tube) is coated with the protective film (a metal film, a conductive metal oxide film, an insulating metal oxide film, or an organic film).
Abstract:
An amalgam assembly for a fluorescent lamp (10) includes an exhaust tubulation (20) closed at a free end thereof (24), a glass ball (40) disposed in the tubulation (20), and a mercury amalgam body (32) disposed in the tubulation (20) between the glass ball (40) and the tubulation closed end (24). The tubulation (20) is provided with a pinched portion (22) comprising a plurality of inwardly extending dimples (26) separated from each other and adapted to engage the glass ball (40) to retain the glass ball (40) on a central axis of the tubulation (20). The glass ball (40) rests on the dimples (26) concentrically and gaps between the dimples (26) allow gas to pass therethrough between the glass ball (40) and an inside surface (30) of the tubulation (20).
Abstract:
An electrodeless low-pressure discharge lamp (10) which comprises a discharge vessel (12), a means for exciting discharge, an UV-to-visible-converting layer (32) and an UV reflecting layer (34). The discharge vessel (12) encloses a gas-tight discharge cavity (14) containing an ionizable fill. The discharge vessel (12) has a light-transmitting bulb portion (16) and a reentrant tube (18) protruding into the discharge cavity (14), and the bulb portion (16) and the reentrant tube (18) each exhibits a surface (21, 20) facing to the discharge cavity (14). The means for exciting discharge is arranged at least partially in the reentrant tube (18). The UV-to-visible-converting layer (32) is applied only to said surface (21) of the bulb portion (16), while the UV reflecting layer (34) is applied to said surface (20) of the reentrant tube (18).
Abstract:
Die Vorrichtung zur Desinfektion von Wasser umfaßt eine Gasentladungslampe mit einem Entladungsgefäß mit Wandungen, die aus einem dielektrischen Material bestehen, die auf ihrer äußeren Oberfläche mindestens mir einer ersten und einer zweiten Elektrode versehen sind und mit einer Gasfüllung, die Xenon enthält, wobei die Wandungen mindestens auf einem Teil ihrer inneren Oberfläche mit einem Überzug, der einen im UV-C-Bereich emittierenden Leuchtstoff enthält, versehen sind. Eine derartige Vorrichtung zur Desinfektion von Wasser ist jederzeit innerhalb von Millisekunden zu 100% betriebsbereit und sie hat eine spektrale Zusammensetzung der UV-Strahlung, die ausschließlich in dem für die Desinfektionswirkung relevanten Bereich zwischen 230 und 300 nm liegt.
Abstract:
An electrodeless lamp comprises an envelope (12) containing a plasma forming fill which includes at least one of sulfur and selenium when excited which emits principally visible light, which is in the form of molecular radiation. The envelope (12) has a diameter of less than one half inch. Means (1) are provided for generating electromagnetic energy. Further means (2, 3, 4, 5, 6) are provided for coupling said electromagnetic energy to said envelope to excite said fill, which in the absence of envelope rotation or with rotation at an insufficient speed, forms a discharge (14) which does not substantially fill the interior volume of said envelope (12). By additional means (13) the envelope (12) is rotated at a fast enough rate so as to cause the discharge (15) formed by the fill to substantially fill the interior volume of the envelope (12).