Optical focusing device

Details Optical focusing device Optical focusing device

1985-01-09

1986-10-07

Corbin, John K.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 45, G02B 704

Patent

active

046155856

ABSTRACT:
In an optical device an objective (11) can be moved relative to the frame (1) along its optical axis (13) in parallel guide means (3, 5) by means of an electromagnetic actuating device. The actuating device comprises first actuating means (21) and second actuating means (23) which are connected to the objective (11) and which cooperate with said first actuating means via an air gap (25). The first actuating means (21) are arranged in a mount (27) which is supported by a leaf-spring-shaped element (29) which is secured to the frame (1).

REFERENCES:
patent: 4475179 (1984-10-01), Geyer
patent: 4557564 (1985-10-01), Van Rosmalen
patent: 4568142 (1986-02-01), Iguma

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