Optical pickup and optical information apparatus
AssigneeSony Corporation
InventorsFumiaki Nakano, Noriaki Nishi
Life of this patent
Estimating the term…
Abstract
An optical pickup includes a detector, a plurality of light guiding units, and a switching controller. The detector detects, using a plurality of detection areas, a reflected light beam that is emitted from a predetermined light source and is reflected off an optical recording medium. Each of the light guiding units has a specific light guide pattern and inputs a predetermined part of the reflected light beam to a predetermined detection area in accordance with the light guide pattern. The switching controller switches and selects the light guiding unit that acts on the reflected light beam from among the plurality of light guiding units according to a predetermined switching condition.
Claims15
An optical pickup comprising:
- a detector for detecting, using a plurality of detection areas, a reflected light beam that is emitted from a predetermined light source to an optical recording medium and is reflected off the optical recording medium;
- a plurality of light guiding means, each having a specific light guide pattern, each of the light guiding means irradiating a predetermined detection area with predetermined part of the reflected light beam in accordance with the light guide pattern;
- and
- a switching controller that switches and selects the light guiding means that acts on the reflected light beam from among the plurality of light guiding means according to a predetermined switching condition.
An optical information apparatus comprising:
- a detector for detecting, using a plurality of detection areas, a reflected light beam that is emitted from a predetermined light source to an optical recording medium and is reflected off the optical recording medium;
- a plurality of light guiding means, each having a specific light guide pattern, each of the light guiding means irradiating a predetermined detection area with a predetermined part of the reflected light beam in accordance with the light guide pattern;
- a switching controller that switches and selects the light guiding means applied to the reflected light beam from among the plurality of light guiding means;
- and
- an integrated controller that controls the switching controller to switch and select the light guiding means that acts on the reflected light beam according to a predetermined switching condition.
An optical pickup comprising:
- a detector configured to detect, using a plurality of detection areas, a reflected light beam that is emitted from a predetermined light source to an optical recording medium and is reflected off the optical recording medium;
- a plurality of light guiding units, each having a specific light guide pattern, each of the light guiding units irradiating a predetermined detection area with a predetermined part of the reflected light beam in accordance with the light guide pattern;
- and
- a switching controller configured to switch and select the light guiding unit that acts on the reflected light beam from among the plurality of light guiding units according to a predetermined switching condition.
An optical information apparatus comprising:
- a detector configured to detect, using a plurality of detection areas, a reflected light beam that is emitted from a predetermined light source to an optical recording medium and is reflected off the optical recording medium;
- a plurality of light guiding units, each having a specific light guide pattern, each of the light guiding units irradiating a predetermined detection area with a predetermined part of the reflected light beam in accordance with the light guide pattern;
- a switching controller configured to switch and select the light guiding unit applied to the reflected light beam from among the plurality of light guiding units;
- and
- an integrated controller configured to control the switching controller to switch and select the light guiding unit that acts on the reflected light beam according to a predetermined switching condition.
Dependencies are inferred from the claim text.