Electrically controlled adjusting device for a light beam...

Details Electrically controlled adjusting device for a light beam... Electrically controlled adjusting device for a light beam...

G - Physics

11

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352/32.2

G11B 7/00 (2006.01) G11B 7/08 (2006.01) G11B 7/09 (2006.01) G11B 7/14 (2006.01)

Patent

CA 1096493

PHD 76048 25.2.77 ABSTRACT: The application relates to a controlled ad- justing device for a light beam with digital and analog deflection control by means of which data spirals which are interrupted by guide segments on a rotating storage disk are written and scanned. The slow analog controlled light deflector is controlled by an adjusting member having a small stroke during the first turn of the data spiral, whilst during the other turns of the spiral it is controlled by an adjusting member hav- ing a large stroke which is coupled to the first ad- justing member. - 12 -

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