JPS63129524A - Optical pickup device - Google Patents

Abstract

PURPOSE:To obtain a device in which swing and tilt adjustment can be applied, by inserting with pressure the side to be inserted with pressure of the turning shaft of an optical pickup so as to be protruded to a side opposite to a bobbin. CONSTITUTION:Since the turning shaft 11 is fitted in a bearing 18, an actuator is prevented form being moved in all directions, and it can be oscillated centering the bearing. Therefore, it is possible to perform rolling by turning the screws of pitchings 19 and 20 in reverse directions mutually by tightening/loosening the screws 19 and 20. The titled device is constituted in such simple structure by utilizing the turning shaft 11 as it is. Furthermore, it is possible to adjust the optical axis of the condenser lens 13 of the actuator for an optical board 17 and a disk by applying the swing and tilt adjustment.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an optical pickup device used for compact discs, optical discs, and the like.

2. Description of the Related Art Conventionally, this type of rotary optical pickup has not been provided with an agitating device, and has been adjusted by aligning the optical axis with a spindle motor or by moving the entire optical pickup.

Problems to be Solved by the Invention The present invention is intended to solve the problem of such an optical pickup device that cannot be adjusted, and it is an object of the present invention to provide an excellent optical pickup device that allows tilt adjustment.

Means for Solving the Problems In order to achieve the object of the present invention, the press-fitting side of the rotating shaft of the optical pickup is press-fitted until it protrudes to the side opposite to the bobbin.

Function The present invention is capable of tilting and adjusting K so that pitching and rolling can be performed centering on the recess provided on the optical bench side by increasing the amount of press-fitting and protruding.
' Embodiment FIGS. 1 and 2 are a side sectional view and a plan view showing the configuration of an embodiment of the present invention. In FIGS. It is press-fitted. Reference numeral 12 is a bobbin, which can slide or rotate in the vertical direction around a rotation axis.

Reference numeral 14 denotes a magnet for generating force to move the bobbin 12 vertically or rotationally, and the force is generated by a coil 15. Reference numeral 17 is an optical bench that converts laser light into parallel light and guides it to the actuator and extracts information from the light that returns to the actuator. Reference numeral 13 is a lens that focuses the laser beam onto the disk. The section from the rotation shaft 11 to the yoke 16 is collectively referred to as an optical pickup actuator. 18 is a bearing for supporting an actuator provided on the optical bench 17, and has a conical hole. 19゜20.21 is a screw for adjusting the tilt of the actuator, and 2
It is pushed upward by spring 2.

Next, the operation of the above embodiment will be explained. In the above embodiment, since the rotation shaft 11 is fitted into the bearing 18, the actuator does not move forward, backward, left or right, but can swing around the bearing. Therefore, the screw 19,
By tightening or loosening both pitching bolts 20, rolling can be performed by turning the pitching screws 19 and 20 in opposite directions.

Effects of the Invention As is clear from the above-mentioned embodiments, the present invention is capable of adjusting the tilting angle and has the advantage that it can be made with a simple structure using the rotation shaft as is. Further, by performing tilt adjustment, it is possible to adjust the optical axis of the condensing lens of the actuator with respect to the optical bench and the disk.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of an optical pickup device according to an embodiment of the present invention, and FIG. 2 is a plan view of the same embodiment. 11...Rotation axis, 12...Bobbin, 1
3...Condensing lens, 14...Macuneno)
, 15... Coil, 16... Yoke, 1
7...Optical bench, 18...Bearing, 19.2
0.21...screw, 22...spring.

Claims (1)

[Claims] A rotating shaft inserted through a support plate, a bobbin that can slide or rotate freely about the rotating shaft, a drive unit for sliding or rotating the bobbin, and condensing light. an optical bench for fixing the actuator, the actuator having a concave portion for supporting an end of the rotating shaft and disposed on a side opposite to the bobbin side of the support plate; Optical pickup device equipped with