Optical: systems and elements – Lens – With support
Patent
1992-08-07
1995-05-16
Lerner, Martin
Optical: systems and elements
Lens
With support
359813, 369 4415, G02B 702, G11B 700
Patent
active
054166403
ABSTRACT:
In an objective holder actuator assembly comprising an objective, an objective holder, a bearing, a focusing control coil, a tracking control coil and a balancer, an acrylate resin member is disposed between an objective holder and focusing and tracking control coils and the objective holder is made of ceramic material to reduce the resonance peak values of the movable segment of the objective actuator at high-order resonance frequencies and increase the high-order resonance frequencies.
REFERENCES:
patent: 4511212 (1985-04-01), Tanaka
patent: 4571026 (1986-02-01), Maruta
patent: 4643522 (1987-02-01), Takashima
patent: 4660190 (1987-04-01), Fujii et al.
patent: 4703470 (1987-10-01), Castagna et al.
patent: 4731777 (1988-03-01), Yoshitoshi et al.
patent: 4817076 (1989-03-01), Van Sluys et al.
patent: 4969715 (1990-11-01), Nishihara et al.
patent: 4998802 (1991-03-01), Kasuga et al.
patent: 5109368 (1992-04-01), Ohta et al.
English Abstract of Japanese reference No. 2244427.
Fujikawa Kazuhiko
Hayashi Takao
Shibata Yasumasa
Urairi Kenichiro
Lerner Martin
Matsushita Electric - Industrial Co., Ltd.
Nguyen Thong
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