| 摘要 |
<p>The invention relates to a magneto-optical read head. A magneto-optical head comprises an optically active part which is a very thin magnetic film (32) which rotates the plane of polarisation of the light as a function of its magnetic polarisation, which is itself linked to the magnetic polarisation of the magnetic tape (20) which carries the information to be read and which passes in front of the thin film. According to the invention, instead of using a focusing optical device in order to illuminate the optically active part, provision is made for the head to comprise an integrated optical guide (50) which emerges directly before the active part and which is such that the plane of incidence of the light rays on the optically active part is perpendicular to the general direction of extension of an air-gap region 34' in front of which the tape passes. Also, provision is preferably made for a photosensitive sensor (linear array 70, 72) to be integrated in the head so as to be less than a few microns from the optically active part on the path of the beam modulated by this part. <IMAGE></p> |
