Objective lens driving apparatus and optical head driving appara

Details Objective lens driving apparatus and optical head driving appara Objective lens driving apparatus and optical head driving appara

1995-12-21

1998-02-03

Levy, Stuart S.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

369 4416, 359814, G11B 709, G02B 700

Patent

active

057152314

ABSTRACT:
An objective lens driving apparatus for driving, in a focus direction and a tracking control direction, an objective lens for converging light onto an optical recording medium, includes a lens bobbin for holding the objective lens. The lens bobbin is provided with two types of drive coils for driving the lens bobbin in the focus and tracking control directions. The lens bobbin is attached in a floating state to a magnetic yoke by a pair of suspensions functioning as cantilevers. The magnetic yoke is provided with a magnet for generating a magnetic field. The lens bobbin is situated such that the drive coils are placed within the magnetic field. Each of the suspensions consists essentially of a rectangular metal frame having a plurality of plate spring portions defined in planes perpendicular to the focus and tracking control directions. A number of through holes are formed in the plate spring portions.

REFERENCES:
patent: 4568142 (1986-02-01), Iguma
patent: 4596444 (1986-06-01), Ushida
patent: 4891799 (1990-01-01), Nakano
patent: 4927235 (1990-05-01), Narumi
patent: 5007712 (1991-04-01), Kikuchi et al.
patent: 5046821 (1991-09-01), Seino
patent: 5126983 (1992-06-01), Ikegame et al.
patent: 5144607 (1992-09-01), Ishida et al.
patent: 5146441 (1992-09-01), Akiba et al.
patent: 5161067 (1992-11-01), Tomiyama et al.
patent: 5206849 (1993-04-01), Yamamoto et al.
patent: 5220459 (1993-06-01), Ichikawa et al.
patent: 5313334 (1994-05-01), Tomiyama et al.
patent: 5467328 (1995-11-01), Murakami et al.
patent: 5475661 (1995-12-01), Tomita et al.
patent: 5488603 (1996-01-01), Tomita et al.
Patent Abstracts of Japan, vol. 13, No. 19 (P-814) Jan. 18, 1989 & JP-A-63 224 039 )Matsushita Electric Ind Co Ltd).
Patent Abstracts of Japan, vol. 10, No. 324 (P-512) (2380) Nov. 5, 1986 & JP-A-61 131 243 (Fujitsu Ltd.) Jun. 18, 1986.
Patent Abstracts of Japan, vol. 11, No. 164 (P-580) May 27, 1987 & JP-A-61 296 536 (Canon Inc.) Dec. 27, 1986.
Patent Abstracts of Japan, vol. 10, No. 173 (P-469) (2229) Jun. 18, 1986 & JP-A-61 024 036 (Matsushita Denki Sangyo K.K.).
Patent Abstracts of Japan, vol. 16, No. 430 (P-1417) Sep. 9, 1992 & JP-A-04 147 441 (Sharp Corporation) May 20, 1992.

Affiliated with

Also associated with

Rating

Objective lens driving apparatus and optical head driving appara does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Objective lens driving apparatus and optical head driving appara, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Objective lens driving apparatus and optical head driving appara will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-669038