Patent
1988-07-22
1989-08-29
Bovernick, Rodney B.
350252, G02B 702
Patent
active
048611395
ABSTRACT:
The present invention relates to an optical head for optically recording or reproducing information. In the optical head of the present invention a holder is provided with an optical element fixedly attached thereto. The holder is axially movable in a guide bore of a housing member and a tapped hole is formed in the circumference of the housing member which hole does not reach the guide bore so as to create a deformable bottom hole portion. When a screw is screwed into the tapped hole it presses against and deforms the bottom hole portion so as to engage the holder. Accordingly, with the optical head according to the present invention, the rotational torque generated when the screw is rotated is absorbed in the bottom portion of the tapped hole, so that the holder is not moved when the screw is screwed into the tapped hole, whereby the optical element fixedly disposed on the holder can be easily positioned at an appointed position.
REFERENCES:
patent: 4252411 (1981-02-01), Nomura
patent: 4330176 (1982-05-01), Kawai
patent: 4351587 (1982-09-01), Matsuo et al.
patent: 4372650 (1983-02-01), Lisfeld et al.
Andou Nobuyoshi
Imai Hitoshi
Ben Loha
Bovernick Rodney B.
Mitsubishi Denki Kabushiki
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