JP2546574Y2 - Compact disc optical pickup lens cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a cleaner for cleaning an optical pickup lens of a compact disc that irradiates a disc with laser light.

[Prior art] An optical pickup facing the lower surface of a compact disc
Laser light is emitted from the lens at the tip to the disk, and if dust adheres to the lens, it hinders the irradiation of the laser light. In this case, there is a problem that sound reproduction is not normal.

Therefore, conventionally, in order to remove dust attached to the lens,
There is a technique intended to provide a brush on a disk and wipe the surface of the lens with the brush (for example, see Japanese Patent Application Laid-Open No. 60-4053).
No. 7).

In this technique, a brush made of fibrous material is provided on a surface facing a lens, and the brush is brought into contact with the lens when the disk rotates.

[Problem to be Solved by the Invention] Since the above brush is formed by densely arranging a thread-like thing in a toothbrush shape, when the brush comes into contact with a lens, an optical signal is cut off and an error is generated, so that an error occurs in the disk. There was a disadvantage that rotation was stopped.

In other words, optical pickup lenses are required to have extremely high precision to reproduce high-density signals, and simply combining a thread-like lens with a toothbrush does not work because the load on the lens is too large. Conversely, if the amount of hairs is reduced or the protruding state of the brush is reduced, the dust cannot be sufficiently wiped out, so that it is difficult to achieve the expected effect as a cleaner.

The present invention has been made in view of such conventional problems, and reliably wipes off dust adhered to the lens without cutting off the light signal, without damaging the lens surface and therefore rotating the disc. The purpose of the present invention is to provide a cleaner which does not cause troubles.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides an optical pickup lens cleaner provided with a cleaning unit on one side of a disk that does not hinder the rotation of the disk even when it comes into contact with the lens. The cleaning unit is formed in a groove having a length of about 10 mm, a depth and a width of about 0.5 mm formed perpendicular to the rotation direction of the disc, and a length and a width not exceeding the size of the groove from the disc surface. Height 2m
The main purpose is to implant a brush made of silk thread of about m.

[Operation] When the disk rotates, the optical pickup lens located below moves closer to the disk and moves laterally. During this movement, the lens is cleaned because the cleaning unit comes into contact with the lens and blows off dust adhering to the surface.

[Embodiment] In FIGS. 1 and 2, reference numeral 1 denotes a disk, which is shown in a direction opposite to the direction in which the disk is attached to the player.

Reference numeral 2 denotes a groove formed in the disk 1, which is located outside the center of rotation 1a of the disk 1 and is formed in a direction orthogonal to the rotation direction of the disk, and has a depth and width of about 0.5 mm and a length of about 10 m.
m.

Reference numeral 3 denotes a cleaning unit, which is formed by implanting a brush formed by extracting a weft thread from a silk thread woven into a vertical groove in the groove 2, and having a height higher than a disk surface when the brush rises vertically from the groove 2. The length is about 2mm. The length and width of the brush do not exceed the size of the groove 2, and a brush made of silk thread is preferable because it is flexible and has resilience.

FIG. 3 shows the state of use of the present invention, in which the cleaning unit 3 faces the optical pickup 4 and when the disk 1 rotates, the optical pickup 4 rises to approach the disk 1 and move in the lateral direction. At this time, the cleaning unit 3 comes into contact with the lens 5 at the tip of the optical pickup to wipe off dust. A soft and resilient material such as silk thread is convenient in that it comes up immediately after contacting the lens, even if it is once tilted, and does not lose its shape even after many uses.

FIGS. 4 and 5 show another embodiment of the present invention, in which the cleaning unit 3 is installed on the disk 1 at a small interval (FIG. 4), and the cleaning unit 3 is installed at an interval of 180 degrees. 5 (FIG. 5), whereby the dust on the lens can be first lifted by one of the cleaning units, and the floating dust can be blown off by the other cleaning unit.

Thus, in the figure, the cleaning unit 3 is
Although it is close to 1a, when recording information for starting cleaning, etc., it is a matter of course that a space corresponding to the recording is provided between the central portion 1a and the cleaning unit.

In the present invention, the brush in the cleaning unit is made of silk thread in the above-described embodiments and the like. However, a brush made of another material which is flexible and resilient as long as the object and effect of the present invention can be obtained.

[Effects of the Invention] The present invention has the following unique effects.

(1) The length, width, and height of the cleaning unit are constant and have predetermined numerical values. Even when the cleaning unit comes into contact with the lens, the load is not large enough to output an error signal, so that the rotation of the disk is not hindered. Will not occur.

(2) Since the cleaning unit reliably wipes off the dirt on the lens, high-quality sound reproduction is always maintained.

(3) Since the brush is flexible and excellent in restoring property, the durability of the lens is maintained and the cleaning unit itself can be used for a long time.

(4) If the cleaning unit is provided at a plurality of locations, the wiping operation is assured, and even if provided at any number of locations, there is no risk that the rotation of the disk will be hindered.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a sectional view showing an attached state of a cleaning unit, FIG. 3 is a sectional view showing a use state of the present invention, FIG. 4 and FIG. FIG. 4 is a plan view showing another embodiment of the present invention. 1 disk 2 groove 3 cleaning unit 5 lens

Claims (1)

(57) [Scope of request for utility model registration] 1. An optical pickup lens cleaner provided with a cleaning unit on one surface of a disk which does not hinder the rotation of the disk even when it comes into contact with a lens, wherein the cleaning unit is formed in a direction perpendicular to the rotation direction of the disk. In a groove with a length of about 10 mm and a depth and width of about 0.5 mm, implant a silk thread brush with a length and width that does not exceed the groove size and a height of about 2 mm above the disk surface Features a compact disk optical pickup lens cleaner.