Optical focussing device

Details Optical focussing device Optical focussing device

G - Physics

02

B

88/94, 352/32.21

G02B 7/04 (2006.01) G02B 21/02 (2006.01) G11B 7/08 (2006.01)

Patent

CA 1128790

-7- PHN 9483 ABSTRACT: An optical focussing device for focussing a radiation beam emanating from a radiation source onto a record carrier, and more specifically for focussing a light beam onto a video disc or audio disc, comprises a frame in which an objective is movable axially in the direction of its optical axis with the aid of a drive system. In order to avoid damaging of the record car- rier at least one elastic bumper is secured to the free end of the objective, which bumper absorbs shocks in the event of contact between the objective and the record carrier.

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