JP2590137Y2 - Optical pickup lens cleaner - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical pickup lens cleaner for cleaning an objective lens of an optical pickup.
In particular, the present invention relates to an optical pickup lens cleaner for wiping foreign substances on the surface of an objective lens in a reading operation of the optical pickup.

[0002]

2. Description of the Related Art Conventionally, as this kind of lens cleaner, there has been a lens cleaner shown in FIG. FIG. 6 is a plan view of a conventional lens cleaner. In the figure, the conventional lens cleaner is
The brush bristle bundles 27 to 31 are arranged in the outer peripheral area outside the lead-in area 10 on the optical disc 1 so as to be displaced in the circumferential direction and the radial direction, respectively.

[0003] The brush bristle bundle 27 planted in a dispersed manner,
, 31 are other adjacent brush bristle bundles 27,
The distance between them in the circumferential direction is set to be equal to or larger than the diameter of the objective lens of the optical pickup on the optical disk player (CD player) side. Further, among the brush bristle bundles 27, 31 arranged in a distributed manner, the brush bristle bundles 27, 31 located on the innermost side and the outermost side of the optical disk, respectively.
Are set so that the radial distance between the optical disks 1 is set to be equal to or larger than the diameter of the objective lens of the optical pickup on the optical disk player (CD player) side.

Next, a cleaning operation of the conventional lens cleaner based on the above configuration will be described. First, the optical disk 1 of the lens cleaner is mounted on the optical disk player (CD player) and the optical disk player is driven. The lens cleaner of the optical disc 1 is rotated by the driving operation of the player. Due to this rotation, a plurality of brush bristle bundles 27,..., 31 distributed in a distributed manner sequentially contact the objective lens of the optical pickup in the optical disk player at predetermined intervals to clean the lens surface.

Since the plurality of brush bristle bundles 27,..., 31 do not come into contact with the objective lens of the optical pickup at the same time, control operations such as tracking servo control and focus servo control of the optical pickup are obstructed. Disappears. That is, even if each of the brush bristle bundles 27 to 31 contacts the optical pickup, the signal loss due to the impact on the optical pickup caused by each contact can be kept within the range in which the signal can be corrected, and the optical disc 1 can be continued. And rotate. By the rotation of the optical disk 1, the surface of the objective lens of the optical pickup can be cleaned.

[0006]

Since the conventional lens cleaner is configured as described above, the plurality of brush bristle bundles 27, 31 arranged in a dispersed manner are stored in the optical disc 1 in a manner as described above.
When the optical disc 1 is rotated, it is caused to oscillate, and the control operation, especially the skew adjustment, becomes difficult. In addition, brush bristle bundle 2
7 to 31 are dusts wiped from the objective lens surface,
There is a problem that foreign matter such as debris floats in the optical disk player and adheres to the objective lens surface again.

[0007] Further, the brush bristle bundles 27, 31 and 31 themselves or the brush bristle bundles 27, 31 fall down to adjacent regions and adjacent tracks, so that the adjacent regions and adjacent tracks recorded on the optical disk 1, for example, the program region. Of the read data, an operation error of the optical disk player occurs, and the cleaning operation cannot be performed. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide an optical pickup lens cleaner capable of performing a cleaning operation reliably and stably.

[0008]

SUMMARY OF THE INVENTION An optical pickup lens cleaner according to the present invention includes an optical disk on which information that can be read by light emitted from an optical pickup is recorded, and a wiper protruding from the disk surface of the optical disk. And an optical pickup lens cleaner comprising: a wiping unit having a plurality of dispersion projections arranged in a spiral row with respect to the center of the optical disk, and disposing the plurality of dispersion projections with respect to the center of the disk. A plurality is symmetrically arranged.

Further, according to the present invention, if necessary, the plurality of dispersion protrusions of the wiping portion may be provided with an optical pickup by setting a radial distance between the innermost dispersion protrusion and the outermost dispersion protrusion of the optical disk. Are arranged within the diameter of the objective lens. Further, according to the present invention, if necessary, the wiping unit is provided with at least one unit of TOC (Table of Content).
ts, the same shall apply hereinafter) within the lead-in area outside the area where information is recorded in the radial direction of the disc. Further, the present invention has an opening in which the dispersion projection of the wiping portion is formed in the tangential direction of the optical disk in the vicinity of the base for attachment to the optical disk as required.

[0010]

According to the present invention, a plurality of dispersion projections are arranged in a spiral array on the disk surface of the optical disk, and a plurality of dispersion projections are arranged symmetrically with respect to the center of the disk. The rotation balance can be prevented from being lost, and the rotation control operation during the cleaning operation can be executed reliably and stably. Further, in the present invention, by disposing a plurality of dispersion protrusions arranged in a spiral shape within the size of the objective lens diameter of the optical pickup, the dispersion protrusions on the innermost peripheral side of the optical disc with respect to the objective lens surface. , So that the foreign matter such as dust on the surface of the objective lens can be sequentially eliminated without floating in a certain direction.

In the present invention, a series of TOC information is completely read by arranging the wiping portion within a lead-in area outside an area where at least one unit of TOC information is recorded. After the state, the cleaning operation can be performed in the lead-in area,
The cleaning operation can be reliably performed without causing an operation abnormality that occurs during the cleaning operation in another area. Furthermore, in the present invention, since the opening portion penetrating in the tangential direction of the optical disc is formed near the mounting base of the dispersion projection of the wiping portion, there is no lodging to the area adjacent to the installation area of the dispersion projection, A read error in the adjacent area can be prevented.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a plan view of an optical pickup lens cleaner of the present embodiment, and FIG. FIG. 3 is a detailed arrangement view of the divided brush bristle bundle in FIG. 1. In each of the drawings, the optical pickup lens cleaner according to the present embodiment has a lead-in area 10 in which at least one unit of TOC information is recorded.
The TOC region 12 and the TOC region
Extended T in which information is recorded in the same signal format as information
A compact disc having an OC area 13 (hereinafter referred to as C
D) 1 and three dispersed brush bristle bundles 21, 22, 2, which are implanted spirally in the extended TOC region 13 of this CD 1.
3 (and 24, 25, and 26), and the three distributed brush bristle bundles 21, 22, and 23 (and 24, 25, and 26) are each a group, and this group is substantially symmetrical with respect to the center of the disk. And a wiping unit 2 provided as a pair.

The wiping unit 2 is provided between a distributed brush bristle bundle 21 (or 24) implanted on the innermost peripheral side and a distributed brush bristle bundle 23 (or 26) implanted on the outermost peripheral side. Interval T
1 is smaller than the diameter D of the objective lens 41 in the optical pickup 4 of the CD player 3. Such a dispersed brush bristle bundle 21 is disclosed in the conventional example (Japanese Patent Laid-Open No. 2-23).
No. 2878), the optical desk 1
A through-hole is provided in the board surface of the above, and about 10 brush bristles are inserted, and the protruding base portion is radially bent toward the peripheral edge of the through-hole on the label surface side, and the bent portion is fixed with an adhesive tape. Although it is possible to adopt this planting method, each of the brush bristles is independent and thin, so that the brush bristles fall down at the time of use to reduce the cleaning effect, and are also caught by the drive device in the player and cannot be driven. It tends to cause some inconvenience.

However, in this embodiment, as shown in FIG.
The brush hair bundle 21 (or 2) is inserted into the through hole 1a of the optical desk 1.
2, 23, 24, 25, 26), the base protruding from the label surface 16 is dissolved by a chemical, preferably by heat, to form a pill 21a that is integrated with the base, and is adhered and fixed with an adhesive tape 1c. It prevents falling off. If the pillow portion 21a is larger than the diameter of the through hole 1a, it is sufficient to prevent the pillow portion 21a from falling out. The pillow portion 21a is not necessarily required to be spherical, but is formed into various shapes such as a flattened shape. In particular,
In the case of heat melting, the base side of the brush bristle bundle is made to protrude longer, and can be melted and integrated by burning off with a hot wire, and the protrusion dimension on the upper surface side of the board can be finely adjusted.

When the pillow portion 21a becomes large,
A counterbore portion may be provided on the label surface 1b side of the through hole 1a to drop the pillow portion 21a. Next, the cleaning operation of the present embodiment based on the above configuration will be described with reference to FIG. First, the CD 1 is mounted on the CD player to be driven. In this driving state, the optical pickup 4
Reads the TOC information from the TOC area 12 of the lead-in area 10, and after the reading of the TOC information is completed, subsequently reads the information of the extended TOC area 13.

When performing this read operation, the optical pickup 4 seeks from the innermost distributed brush bristle bundle 23 to the opposing innermost distributed brush bristle bundle 24. further,
The dispersing brush bristle bundle 24 faces the dispersing brush bristle bundle 2
2, from the dispersed brush bristle bundle 22 to the opposing dispersed brush bristle bundle 25, from the dispersed brush bristle bundle 25 to the outermost peripheral dispersed brush bristle bundle 23, and from the dispersed brush bristle bundle 23 to the outermost periphery It moves to the distributed brush bristle bundle 26 sequentially. With the seek movement of the optical pickup 4, each of the dispersed brush bristle bundles 21 to 26 can continuously slide on the surface of the objective lens 41 in the direction of arrow S shown in FIG. 3.

As described above, the innermost distributed brush bristle bundle 21 to the outermost distributed brush bristle bundle 26 sequentially slide from one end of the objective lens 41 to the other end to remove foreign matter such as dust and debris. Move sequentially to the other end. That is, since each of the dispersed brush bristle bundles 21 to 26 slidably contacts the objective lens 41 sequentially from the inner circumference to the outer circumference, the foreign matter once wiped does not adhere to the surface of the objective lens 41 again. The extension T
When the objective lens 41 of the optical pickup 4 is cleaned in the OC area 13, the brush bristle bundle 21 (or 2
The information pits are shielded by 2, 2, and 26) and cannot be read, and are read as information including a missing signal. But,
Since the reading of the TOC information has already been completed in the TOC area 12, the optical pickup 4 is forcibly moved to the outermost edge of the extended TOC area 13. The cleaning operation can be completed without interruption by the forced movement of the optical pickup 4.

That is, the TOC area 12 and the extended TOC area 1
Since information is repeatedly recorded in the same signal format as that of the extended TOC area 3, the areas 12 and 13 cannot be distinguished by the optical pickup 4 on the reading side.
Will be ignored. By ignoring this burst error, even when the diameter of the base end of each of the dispersed brush bristle bundles 21 to 26 is as large as 0.7 mm, the read movement of the recording information is not performed by each of the dispersed brush bristle bundles 2.
The cleaning operation can be continued without being interrupted at the planting locations 1, 2,.

The dispersed brush bristle bundles 21 to 26 are bundles of a predetermined number of various kinds of bristles such as natural fibers, synthetic fibers, and fibers, and have dimensions slightly longer than the distance from one side of the CD 1 to the objective lens 41 of the optical pickup 4. Formed at the height of
In addition to the structure in which a plurality of yarns are bundled, the dispersed wiping portion may be formed of a member having elasticity and a property of infiltrating the cleaning liquid, such as a foaming material and a coagulating material. An example of this is shown in FIG.
Shown in FIG. 5A is a view showing the mounting manner of the wiping portion in the CD 1, FIG. 5B is a cross-sectional view taken along the line II of FIG. 5A, and FIG. 5C is a line II-II of FIG. It is a line sectional view. In the figure, a side hole 200 as an opening formed in the tangential direction of the CD 1 is provided near the base of the wiping portion.

By forming the side holes 200 in the dispersing and wiping portion, the dispersing and wiping portion itself is moved in the radial direction (arrow A).
Or B) it becomes easier to fall down in the tangential direction (arrow C or D), and the TOC region 12 adjacent to the extended TOC region 13
Alternatively, falling into the program area 14 is prevented. Since the falling into the TOC area 12 or the program area 14 is prevented in this way, when the TOC information is read or the program information is read, the dispersed
The information pits 2 and 14 are not shielded, and read errors can be prevented.

Further, since the wiping portion is arranged symmetrically with respect to the weight distribution of the brush bristle such as a foaming material or a coagulating material, the wiping portion has a good rotational balance even if it is formed of a large member. It is less likely to be restricted by members and has a high degree of design freedom. In the above embodiment, the innermost and outermost distributed brush bristle bundles 21 (or 24) and 23 (or 26) are placed in one annular band formed within the range of the diameter D of the objective lens 41. Although it was configured to be implanted so as to fit, another annular band (band width is T2; T2 ≦ D) further radially separated from the annular band by a dimension D1 (D1 ≧ D) or more. The dispersing brush bristle bundles can be arranged in the same manner as the dispersing brush bristle bundles 21 to 26.

In the above embodiment, the wiping unit 2 is provided in the extended TOC area 13 of the lead-in area 10. However, another area, such as a program area, is provided so as not to cause an abnormality in the reading operation. The wiping unit 2 can be provided at 14. Further, in the above embodiment, each of the distributed brush bristle bundles 21, 22, 23 (or 24, 2
5, 25) is provided as one set and three pairs are provided symmetrically. However, an arbitrary number of distributed brush bristle bundles may be provided as one set, and a plurality of pairs may be provided symmetrically.

[0023]

As described above, according to the present invention, since the opening portion penetrating in the tangential direction of the optical disk is formed near the mounting base of the wiping portion, the wiping portion is not allowed to fall to the region adjacent to the installation region. This has the effect that reading errors can be prevented.

[Brief description of the drawings]

FIG. 1 is a plan view of an optical pickup lens cleaner according to an embodiment of the present invention.

FIG. 2 is a detailed attachment mode diagram of the divided brush bristle bundle illustrated in FIG. 1;

FIG. 3 is a detailed arrangement diagram of each dispersed brush bristle bundle illustrated in FIG. 1;

FIG. 4 is a diagram illustrating a cleaning operation of the optical pickup lens cleaner illustrated in FIG. 1;

FIG. 5 is a detailed structural view of a distributed brush bristle bundle according to another embodiment of the present invention.

FIG. 6 is a plan view of a conventional optical pickup lens cleaner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compact disk (CD) 2 Wiping part 4 Optical pickup 10 Lead-in area 12 TOC area 13 Extended TOC area 14 Program area 15 Lead-out area 21, ..., 26 Distributed brush bristle bundle 41 Objective lens 200 Side hole

Claims (1)

(57) [Scope of request for utility model registration] 1. An optical pickup lens cleaner comprising: an optical disk on which information readable by light emitted from an optical pickup is recorded; and a wiping portion protrudingly mounted on a surface of the optical disk. An optical pickup lens cleaner having an opening near the base for attachment to an optical disc, the opening being formed in the tangential direction of the optical disc.