US 6,983,472 B2 | ||
Optical pickup | ||
Tatsuya Ito, Osaka (Japan) | ||
Assigned to Funai Electric Co., Ltd., Osaka (Japan) | ||
Filed on Aug. 06, 2002, as Appl. No. 10/212,116. | ||
Claims priority of application No. P2001-247574 (JP), filed on Aug. 17, 2001. | ||
Prior Publication US 2003/0035358 A1, Feb. 20, 2003 | ||
Int. Cl. G11B 33/14 (2006.01); G11B 7/00 (2006.01) |
U.S. Cl. 720—648 | 3 Claims |
1. An optical pickup comprising:
a pickup body made of a synthetic resin, the pickup body having a light passage hole, first and second openings formed in
both ends thereof, and a groove formed in an outer peripheral surface thereof;
a photodiode disposed at the first opening;
a half mirror disposed in the light passage hole;
a collimator lens disposed at the second opening;
an objective lens disposed at the second opening side;
a semiconductor laser accommodated at a position opposing the half mirror in the light passage hole;
a metallic supporting baseplate on which the semiconductor laser is mounted, the metallic supporting baseplate having an extension;
a printed circuit board disposed on the outer peripheral surface of the pickup body, the printed circuit board having a circuit
board body; and
a plurality of cables for connecting the printed circuit board to the photodiode and the semiconductor laser respectively,
wherein laser light is projected from the semiconductor laser onto a disk via the half mirror, the collimator lens, and the
objective lens, and the reflected light is received by the photodiode through the half mirror so as to read information recorded
on the disk,
wherein the extension extends integrally from the metallic supporting baseplate and is inserted in the groove, and
wherein the circuit board body comprises a metal plate, the circuit board body is secured to the pickup body to bring the
circuit board body in close contact with the extension and the outer peripheral surface of the pickup body.
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