Biaxial actuator

Details Biaxial actuator Biaxial actuator

1995-02-15

1997-04-01

Tupper, Robert S.

Optical: systems and elements

Lens

With support

369244, G11B 7095

Patent

active

056172567

ABSTRACT:
A biaxial actuator with a first or focusing coil and a second or tracking coil wound around a bobbin and disposed opposite to a magnet, wherein the bobbin has a hollow cylindrical body and flanges formed at both ends of the cylindrical body. Coil retaining portions are formed in the flanges, and the first coil is wound around the cylindrical body, while the second coil is wound around the retaining portions, whereby accidental slip-off of the coils can be prevented. The tracking coil is wound around the retaining portions with inclination of a predetermined angle to the magnet. And both the focusing coil and the tracking coil are retained at projections formed on at least one of the flanges.

REFERENCES:
patent: 4669823 (1987-06-01), Iguma et al.
patent: 4702555 (1987-10-01), Iguma et al.
patent: 4813033 (1989-03-01), Baasch et al.
patent: 5018836 (1991-05-01), Noda et al.
patent: 5046820 (1991-09-01), Saekusa et al.
patent: 5159482 (1992-10-01), Heinrich

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