Flat coplanar-discharge lamp and uses of same

H - Electricity – 01 – J

Patent

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H01J 61/30 (2006.01)

Patent

CA 2619990

The invention relates to a flat discharge lamp (100) which transmits visible or ultraviolet radiation. The invention comprises: first and second flat or essentially-flat glass elements (2, 3) which are maintained essentially parallel to one another and which define and internal space (10) that is filled with gas (71), the first and/or second glass element being made from a radiation-transmitting material; and at least one first electrode (41a) and at least one second electrode (51a) which can be at different potentials and which can be supplied with an AC voltage (V1), said first and second electrodes being associated with one or more main faces (21) of the first glass element. Moreover, said substantially-elongated first and second electrodes are disposed essentially parallel to one another and are separated by at least one interelectrode space having an essentially-constant given width (d1).The invention is characterised in that the lamp also comprises at least one third electrode (42a) which can be at a given potential (V01), which is associated with a main face (31) of the second glass element and which projects out such as to occupy at least part of the interelectrode space.

Lampe plane à décharge (100) transmettant un rayonnement dans l'ultraviolet ou le visible, comprenant : des premier et deuxième éléments verriers plans (2, 3) ou sensiblement plans maintenus sensiblement parallèles entre eux et délimitant un espace interne (10) rempli de gaz (71), le premier et/ou le deuxième élément verrier étant en un matériau transmettant ledit rayonnement ; au moins une première électrode (41a) et au moins une deuxième électrode (51a) lesquelles sont susceptibles d'être à des potentiels distincts et d'être alimentées par une tension alternative (V1) , les première(s) et deuxième(s) électrodes étant associées à une ou des faces principales (21) du premier élément verrier, les première(s) et deuxième(s) électrodes étant essentiellement allongées et sensiblement parallèles entre elles, et séparées par au moins un espace dit interélectrodes de largeur donnée dite d1 sensiblement constante, caractérisée en ce qu'elle comprend en outre au moins une troisième électrode (42a) susceptible d'être à un potentiel donné (V01), associée à une face principale (31) du deuxième élément verrier et occupant, en projection, au moins partiellement l'espace interélectrodes.

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