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EP0077693A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Optoelectronic device for reproducing information carried on a magnetic record carrier

Assignee: Bull SAS
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Filing: 1982-03-31
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Granted: —
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Expires: 2002-03-31
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Abstract

Abstract Translated from French Dispositif de lecture, comprenant une source (SLP i ) émettant un faisceau de lumière polarisée, des moyens de détection (MDK 1 ) de l'angle de rotation du plan de polarisation de la lumière, des moyens optiques de focalisation (OBJGROS) à grand champ d'observation permettant d'observer simultanément une pluralité de pistes et une pluralité d'informations sur chaque piste, et des moyens de projection (MPROJ 1 ) de l'image de la surface du support observés par les moyens optiques, sur un plan (P) où sont disposés des transducteurs opto-électroniques (TRPE ij ). Reading device, comprising a source (SLP i ) emitting a beam of polarized light, means of detection (MDK 1 ) of the angle of rotation of the plane of polarization of light, optical focusing means (OBJGROS) at large observation field making it possible to observe simultaneously a plurality of tracks and a plurality of information on each track, and means of projection (MPROJ 1 ) of the image of the surface of the support observed by optical means, on a plane (P) where opto-electronic transducers (TRPE ij ) are arranged. Applicable aux mémoires magnéto-optiques. Applicable to magneto-optical memories.

Inventors

  • 👤 Jean-Pierre Lazzari

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 12:12
CPC Classifications
G; G11; G11B; G11B11/00; G11B11/10; G11B11/105; G11B11/10532; G11B11/10541; G11B11/10543

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