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EP0115458A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Optical focussing device for read-out of a record carrier in procession

Assignee: Bull SAS
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Filing: 1984-01-23
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Granted: —
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Expires: 2004-01-23
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Abstract

Abstract Translated from French Dispositif optique de focalisation d'un faisceau lummineux pour la lecture (DISFOCI1 à DISFOCI4) d'un support d'informations défilant devant lui, comprenant d'une part un corps principal (CPLI1 à CPLI4) qui vole au-dessus de ce dernier et au moins une optique (OPFOCI1, OPFOCI2, OPFOCI3, OPFOCI4, OPFOCI5) de focalisation du faisceau disposée de telle sorte que sa distance par rapport au support reste constante. Optical device for focusing a light beam for reading (DISFOCI1 to DISFOCI4) an information medium scrolling in front of it, comprising on the one hand a main body (CPLI1 to CPLI4) which flies above the latter and at least one optic (OPFOCI1, OPFOCI2, OPFOCI3, OPFOCI4, OPFOCI5) for focusing the beam arranged so that its distance from the support remains constant. Selon l'invention, le dispositif optique de focalisation est caractérisé en ce que l'optique est embarquée sur le corps principal et est solidaire en mouvement de celui-ci. According to the invention, the optical focusing device is characterized in that the optics are on board the main body and are integral in movement with the latter. Applicable à la lecture optique d'informations optiques magnétiques. Applicable to optical reading of magnetic optical information.

Inventors

  • 👤 Catherine Gueugnon

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-02 23:58
CPC Classifications
G; G11; G11B; G11B11/00; G11B11/10; G11B11/105; G11B11/10532; G11B11/10541; G11B7/00; G11B7/08; G11B7/12; G11B7/122

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