SU1582196A1 - Mechanism for displacing objective of optical device for reproduction of information - Google Patents

Abstract

The invention relates to an optoelectronic instrument making device, in particular, to information storage devices, for reading information from optical disk media, can be used in sound laser players, and can improve the dynamic characteristics of an optical device moving mechanism of an optical device by increasing control sensitivity. The goal is achieved by the fact that the suspension is made of two flexible parallelograms installed in pairs in mutually perpendicular planes, and the drive consists of stationary electromagnets 9, 10 and permanent magnets 7, 8 mounted on moving structural elements. 1 il.

Description

one

(21) 4222185 / 24-10

(22) .7

(46) 30. (17- 90. Bulletin V 28

(72) S.V. Kuzmenko, N.S. Ivanov,

V.V.Nasonov and L.N. Pevchenko

(53) 681.84.083 (088.8)

(56) US Patent No. 4538882, cl. G 11 B 7/08, 1986.

(54) MECHANISM OF MOVEMENT OF THE LENS OF THE OPTICAL DEVICE FOR REPRODUCTION OF INFORMATION

(57) The invention relates to an optoelectronic instrument making device, in particular, to information storage devices, for reading information from optical disk carriers, can be used in sound laser players, and allows improving the dynamic characteristics of an optical device lens moving mechanism by increasing control sensitivity. . The goal is achieved by the fact that the suspension is made of two flexible parallelograms installed in pairs in mutually perpendicular planes, and the drive consists of stationary electromagnets 9, 10 and permanent magnets 7, 8 mounted on moving structural elements. 1 il.

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The invention relates to the accumulation of information and can be used in sound laser players as a mechanism for two-coordinate positioning of a lens.

The purpose of the invention is to improve the dynamic characteristics of the mechanism by increasing the sensitivity of the control.

The drawing shows the mechanism, isometric.

The mechanism for moving the lens contains the first 1 and second 2 pairs of flat springs, the bracket 3. the boss, the lens holder 5 5, two permanent magnets 7 on the boss k, two other permanent magnets 8 on the holder 5 of the lens 6, electromagnets 9 and 10, consisting of coils 11 and magnetic cores 12, as well as a base 13.

The mechanism works as follows.

The control current is applied to the coils 11 of electromagnets 9 and 10. The coils 11 of the electromagnet 9 receive a current that determines the position of the lens 6 in the direction of it. the optical axis, and the coil 11 of the electromagnet 10 receives a current that determines the position of the lens 6 relative to the information track of the information carrier (not shown), i.e. in the plane perpendicular to the optical axis of the lens. The magnetic field of the coil 11 of the electromagnet 9 interacting with the permanent magnets 7 mounted on the boss 4 causes the boss to move in the direction of the optical axis of the lens 6. A pair of flat springs 1 provides parallel-translational movement of the holder 5 of the lens 6 in the direction of the optical axis of the lens, following the focusing.

The magnetic field of the coil 11 of the electromagnet 10, interact with the permanent magnets 8, installed

1582196

on the lens mount 5 5 causes

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15

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35

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the displacement of the holder 5 in the direction perpendicular to the optical axis of the lens, ensuring tracking of the information track of the information carrier, i

A second pair of flat springs 2 provides parallel-translational movement of the holder 5 in the direction perpendicular to the optical axis of the lens 6 for tracking the information track.

Claims (1)

Invention Formula The mechanism for moving an optical device for reproducing information, comprising a base with a bracket, four permanent magnets, a holder with a lens whose optical axis is perpendicular to the base, four electromagnets made on W-shaped magnetic conductors and two pairs of flat springs, and the lens holder kinematically connected with the bracket through flat springs, characterized in that, in order to improve the dynamic characteristics of the mechanism by increasing the sensitivity of the control, into it A boss is inserted on which two permanent magnets are mounted and which is connected to the bracket via a pair of flat springs mounted perpendicular to the optical axis of the lens, which is connected to the lens holder via another pair of flat springs perpendicular to the first pair, the other two permanent magnets are mounted on the lens holder on its opposite sides and opposite each of these magnets, respectively, an electromagnet is mounted on the base and on the bracket, while the other two electromagnets are placed on the base AANII respectively opposite the permanent magnets, mounted on the boss. 0 five 0 five 0 five the displacement of the holder 5 in the direction perpendicular to the optical axis of the lens, ensuring tracking of the information track of the information carrier, i A second pair of flat springs 2 provides parallel-translational movement of the holder 5 in the direction perpendicular to the optical axis of the lens 6 for tracking the information track. Invention Formula The mechanism for moving an optical device for reproducing information, comprising a base with a bracket, four permanent magnets, a holder with a lens whose optical axis is perpendicular to the base, four electromagnets made on W-shaped magnetic conductors and two pairs of flat springs, and the lens holder kinematically connected with the bracket through flat springs, characterized in that, in order to improve the dynamic characteristics of the mechanism by increasing the sensitivity of the control, into it A boss is inserted on which two permanent magnets are mounted and which is connected to the bracket via a pair of flat springs mounted perpendicular to the optical axis of the lens, which is connected to the lens holder via another pair of flat springs perpendicular to the first pair, the other two permanent magnets are mounted on the lens holder on its opposite sides and opposite each of these magnets, respectively, has an electromagnet on the base and on the bracket, while the other two electromagnets are placed on the base correspondingly to permanent magnets mounted on a boss, respectively.