H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/34
H01J 29/24 (2006.01) G02B 6/08 (2006.01)
Patent
CA 1229120
13 ABSTRACT: The invention relates to an electroluminescent screen comprising an optical fibre plate formed by the reunion of elementary optical fibres constituted by bars of core glass enveloped by a cladding glass, the optical fibre plate being provided with cavities obtained after having hollowed out partially the core glass. The inven- tion is remarkable in that the bottom of the cavities is covered by a deposit of a restoring material which is transparent to the luminous flux, ameliorating the sur- face state and the flatness of the bottom of the cavities and tending to minimize the fillet at the intersection between the bottom and the wall of each cavity. The restoring material preferably has an optical index near that of the core glass in order to ensure the optical con- tinuity. Said screen of high resolution and high luminous efficiency is used in display tubes such as night-vision tubes, X-ray converter tubes, slid scanning tubes, cathode ray tubes used in oscilloscopy or in television. The invention may be used in display tubes used in night- vision, X-ray conversion, slid scanning, oscilloscopy, television.
485755
Baudry Hugues
Duchenois Valere
Fouassier Michele
N.v.philips'gloeilampenfabrieken
Van Steinburg C.e.
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