JPH04238187A - Optical disk device - Google Patents

Abstract

PURPOSE:To prevent the staining of a lens and to exactly process the reading and writing of information to an optical disk medium by covering an objective lens with a dustproof cover for the lens when the optical disk device is not under operation. CONSTITUTION:A detector 1 is provided in the insertion port for an optical disk medium 22 of the optical disk device 21 and detects the mounting of the optical disk medium 22. The dustproof cover 2 for the lens consists of an elastic material and is disposed to face the objective lens part 24 above this part and is connected and fixed to a driving mechanism 4 via a connecting plate 3. The driving mechanism 4 is connected electrically to the detector 1. The clean air past a filter 12 is blasted by a fan 11 into the optical disk device 21 when a power source is supplied to the device 21. The driving mechanism 4 receiving the signal of the detector 1 operates and the dustproof cover 2 of the lens is held raised when the optical disk medium 22 is already inserted. The cover 2 descends to hermetically close the surface of the objective lens 24 when the medium 22 is discharge and when the power source stops.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to an optical disc device.
In particular, the present invention relates to an optical disc device having a dustproof function for an objective lens section.

0002

[Prior Art] Conventionally, in this type of optical disc device, clean air that has passed through a filter is blown inside by a fan to prevent dust from entering the optical disc device and to prevent dirt on the objective lens section. there was.

0003

[Problems to be Solved by the Invention] In the conventional optical disc device described above, when the power is turned on and the fan is operating, clean air that has passed through a filter is blown inside to prevent dust from entering the optical disc device. Although it prevents dirt from getting dirty,
When the optical disk device is powered off, the fan stops blowing air, dust enters the optical disk device, and the surface of the objective lens on the carriage gets dirty, making it impossible to read and write information to the optical disk medium accurately. . Another drawback is that it is necessary to frequently clean the surface of the objective lens.

0004

[Means for Solving the Problems] The optical disc device of the present invention is an optical disc device that uses laser light to read and write information on an optical disc medium, and includes a detector for detecting attachment of an optical disc medium, and an objective lens section on a carriage. The lens dustproof cover is provided with lens dustproof covers disposed facing each other upwardly, and a drive mechanism that connects and fixes the lens dustproof covers and drives the lens dustproof covers in a straight line.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

FIG. 1 is an internal side view showing an embodiment of the optical disk device of the present invention, in which (a) shows the state when the optical disk medium is inside the optical disk device, and (b) shows the state when the optical disk medium is inside the optical disk device. Indicates the state when there is no.

The optical disc device 21 is mounted on a carriage 23 attached to the lower part of the optical disc device 21 so as to move an optical disc medium 22 inserted into the device horizontally in the radial direction. ) upwardly, a fan 11 attached to blow outside air into the inside, and a filter 12 that filters the air.

The detector 1 is disposed at an insertion slot for an optical disk medium 22 of an optical disk device 21 and detects whether the optical disk medium 22 is inserted. The lens dustproof cover 2 is made of an elastic material, is disposed above the objective lens section 24 facing each other, and is connected and fixed to the drive mechanism 4 via a connecting plate 3. Drive mechanism 4
is electrically connected to the detector 1.

Next, the operation of this embodiment will be explained. When the power is turned on to the optical disc device 21, clean air that has passed through the filter 12 is constantly blown into the optical disc device 21 by the fan 11, and when the optical disc medium 22 is inserted, the signal from the detector 1 is received. The driving mechanism 4 is activated, and the lens dustproof cover 2 is raised as shown in (a).

Further, when the optical disc medium 22 is being ejected or when the power is stopped, the lens dustproof cover 2 is lowered to seal the surface of the objective lens section 24, as shown in FIG.

[0011]

As explained above, the present invention provides a lens dust-proof cover to cover the objective lens when the optical disk device is not operating, thereby preventing the objective lens from becoming dirty due to dust and preventing the optical disk medium from becoming dirty. This has the advantage that reading and writing of information to and from the lens can be processed accurately, and frequent cleaning of the surface of the objective lens section is not required.

[Brief explanation of the drawing]

FIG. 1 is an internal side view showing an embodiment of an optical disc device of the present invention.

[Explanation of symbols]

1 Detector 2 Lens dustproof cover 3 Connecting plate 4 Drive mechanism 11 Fan 12 Filter 21 Optical disc device 22 Optical disc media 23 Carriage 24 Objective lens section

Claims (1)

[Claims] 1. An optical disk device that reads and writes information on an optical disk medium using laser light, comprising: a detector for detecting attachment of an optical disk medium; and a lens dustproof cover disposed opposite to each other above an objective lens section on a carriage. and a drive mechanism that connects and fixes the lens dustproof cover and drives it linearly.