Uvc liquid light guide

G - Physics – 02 – B

Patent

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Details

G02B 6/10 (2006.01) A61C 19/00 (2006.01) B01J 19/12 (2006.01) G02B 1/04 (2006.01) G02B 6/032 (2006.01)

Patent

CA 2314187

The invention relates to a novel liquid light guide for transmitting UVC radiation in the 220 nm-280 nm wave-length region. The UVC light guide can be coupled to a non coherent radiation source for UVC radiation e.g. a medium pressure Hg lamp. The UVC radiation emitted by the light guide can be used, for example, for photochemical hardenning of adhesives or laquers. Preferably, the light guide is flexible. In one preferred embodiment, the UVC liquid light guide has two concentrically arranged flexible tubes (3, 4) made of fluorocarbon polymer, whereby the inner flexible tube (3) contains a solution of NaH2PO4 in H2O and the area (5) between both flexible tubes is totally or partially filled with H2O.

L'invention concerne un nouveau conducteur optique liquide destiné à la transmission d'un rayonnement ultraviolet C (UVC) dans la plage de longueurs d'ondes comprise environ entre 220 nm et 280 nm. Le conducteur optique UVC peut être couplé à une source de rayonnement non cohérente destinée au rayonnement UVC comme, par exemple, une lampe à mercure à moyenne pression. Le rayonnement UVC émis par le conducteur optique peut servir, par exemple, au durcissement photochimique de colles ou de vernis. Le conducteur optique est, de préférence, flexible. Dans un mode de réalisation préféré, le conducteur optique liquide UVC contient deux flexibles (3, 4) concentriques en fluorocarbone-polymère. Le flexible intérieur (3) contient une solution de NaH2PO4 dans H2O et l'espace (5) séparant les deux flexibles est entièrement ou partiellement rempli de H2O.

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