JP2001126301A5

JP2001126301A5 -

Info

Publication number: JP2001126301A5
Application number: JP1999309717A
Authority: JP
Filing date: 1999-10-29
Publication date: 2004-08-12

Claims

A component used for irradiating an optical disc with a beam of a predetermined wavelength and having at least one of a function of recording and reproducing data on the optical disc and a component for controlling data reproduction or recording. In the built-in optical head,
A light source that outputs a beam of a predetermined wavelength,
An objective lens for condensing the beam and irradiating the optical disc;
An actuator that drives the objective lens for tracking adjustment or focus adjustment of a beam applied to an optical disc,
A yoke included in the actuator, which cooperates with a coil to apply a driving force to the lens;
A light-receiving element for receiving a beam reflected from the optical disc and converting the beam into an electric signal; and an optical element for providing an opening and guiding the beam in the opening so as to form an optical path of the beam from the light source to the objective lens. A base for holding system parts,
An optical head, comprising: component holding means for inserting the component into an opening of the base and holding the component at a position parallel to the optical path and not interfering with the optical path of the beam.

The component is a light source driving component for driving the light source, an actuator driver component for driving the actuator, or a signal processing component for processing a high frequency signal from the light receiving element. The optical head according to claim 1.

2. The optical head according to claim 1, wherein the light path of the beam is emitted from the light source so as to gradually spread after being emitted from the light source.

5. The optical head according to claim 4, wherein the circuit holding means does not protrude beyond the height of the yoke.

An optical head used in an optical disc device having a function of irradiating a beam of a predetermined wavelength to the optical disc and recording data on the optical disc,
A light source that outputs a beam of a predetermined wavelength,
A light source driving component for driving the light source,
A monitor photodetector component for detecting the light amount of the beam emitted by the light source,
An objective lens for condensing the beam and irradiating the optical disc;
A light-receiving element that receives a beam reflected from the optical disc and converts the beam into an electric signal;
A base for holding an optical system component for guiding a beam so as to provide an opening and form an optical path of a beam from the light source to the objective lens in the opening;
Component holding means for inserting the monitor photodetector component into the opening and holding the monitor photodetector component at a position parallel to the optical path and at a position not interfering with the beam. Optical head .

The optical head according to claim 5, wherein the light source driving component is held along the optical path together with the monitor light detection component in the opening.

An optical head used in an optical disk device having at least one of a function of irradiating an optical disk with a beam of a predetermined wavelength and at least recording or reproducing data on the optical disk,
An objective lens,
A light source that emits a beam of a predetermined wavelength,
A light source driving component for driving the light source,
A base provided with an opening, holding the lens and the light source in the opening so as to maintain a predetermined optical path length,
A cover that mounts the light source driving component, inserts the light source driving component into the opening, and holds the light source driving component at a position parallel to the beam optical path and at a position that does not interfere with the beam. An optical head characterized in that:

The optical head according to claim 7, wherein the base holds the cover with a predetermined gap.

9. The optical head according to claim 8, wherein the base exposes a part of the light source driving component from a predetermined gap of the cover.

10. The optical head according to claim 7, wherein the drive component is mounted on the cover with a flexible printed circuit board interposed therebetween.

An optical head used in an optical disc device having a function of irradiating a beam of a predetermined wavelength to the optical disc and recording data on the optical disc,
An objective lens,
A light source that emits a beam of a predetermined wavelength,
A monitor photodetector component for detecting the light amount of the beam emitted by the light source,
A base provided with an opening, holding the lens and the light source in the opening so as to maintain a predetermined optical path length,
A flexible printed circuit board that mounts the monitor light detection component, inserts the monitor light detection component into the opening, and holds the monitor light detection component along the beam optical path and without interfering with the beam. An optical head, characterized in that:

An optical disc device having at least one of a function of recording or reproducing data on the optical disc by irradiating the optical disc with a beam of a predetermined wavelength using an optical head,
A guide member that guides the optical head when the optical head moves in the radial direction of the disk,
The optical head, a component that controls at least one of data recording or reproduction,
A light source that outputs a beam of a predetermined wavelength,
An objective lens for condensing the beam and irradiating the optical disc;
An actuator that drives the objective lens for tracking adjustment or focus adjustment of a beam applied to an optical disc,
A yoke included in the actuator, which cooperates with a coil to apply a driving force to the lens;
A light-receiving element that receives a beam reflected from the optical disc and converts the beam into an electric signal;
A base for holding an optical system component for guiding a beam so as to provide an opening and form an optical path of a beam from the light source to the objective lens in the opening;
An optical disc device, comprising: component holding means for inserting the component into the opening and holding the component at a position not interfering with the optical path of the beam and parallel to the optical path.