OPTICAL PICKUP
First Claim
1. An optical pickup comprising:
- an objective lens for converging laser light and directing it to an information recording medium;
a rotational frame member which surrounds the periphery of the objective lens, has a circular-shaped outer peripheral edge around an optical axis of the objective lens and rotates in conjunction with the objective lens;
a lens holder which has a concave stepped portion for rotatably supporting the rotational frame member and is coupled to the rotational frame member after rotation adjustments; and
a protruding portion protruded from the rotational frame member toward the information recording medium.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical pickup comprising: an objective lens 16 for converging laser light and directing it to an information recording medium 17; a rotational frame member 19 which surrounds the periphery of the objective lens 16, has a circular-shaped outer peripheral edge around an optical axis of the objective lens 16 and rotates in conjunction with the objective lens 16; a lens holder 15 which has a concave stepped portion 10 for rotatably supporting the rotational frame member 19 and is coupled to the rotational frame member 19 after rotation adjustments; and a protruding portion 20 protruded from the rotational frame member 19 toward the information recording medium 17.
The optical pickup can facilitate operations for adjusting the rotation of the objective lens and certainly prevent both the objective lens and the information recording medium from being damaged.
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Citations
12 Claims
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1. An optical pickup comprising:
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an objective lens for converging laser light and directing it to an information recording medium; a rotational frame member which surrounds the periphery of the objective lens, has a circular-shaped outer peripheral edge around an optical axis of the objective lens and rotates in conjunction with the objective lens; a lens holder which has a concave stepped portion for rotatably supporting the rotational frame member and is coupled to the rotational frame member after rotation adjustments; and a protruding portion protruded from the rotational frame member toward the information recording medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An information recording/reproducing device for reproducing or/and recording information by converging laser light emitted from a laser device, directing it to an information recording medium and receiving the light reflected by the information recording medium, the information recording/reproducing device comprising:
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an optical pickup comprising; an objective lens for converging laser light and directing it to an information recording medium; a rotational frame member which surrounds the periphery of the objective lens, has a circular-shaped outer peripheral edge around an optical axis of the objective lens and rotates in conjunction with the objective lens; a lens holder which has a concave stepped portion for rotatably supporting the rotational frame member and is coupled to the rotational frame member after rotation adjustments; and a protruding portion protruded from the rotational frame member toward the information recording medium; and a table being adapted such that an information recording medium can be mounted thereon and the laser light can be directed to the information recording medium through the objective lens in the optical pickup.
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Specification