Scanning and driving gear for optical devices - uses optical processor and electrically energises windings integrating with permanent magnets

摘要

The unit comprises a main frame (1) with a movable housing (2, 2', 3, 4, 4', 9) containing an object lens (7) and electrical windings (5, 5') to control lateral movement over guide marks, and electrical windings (6) for focusing. the windings interact with permanent magnets (8). A system (11, 11') exists to guide the frame (1). Preferably, the housing (2, 2', 3, 4, 4', 9) contains a carrier (9) which supports the object lens (7), windings (5, 5', 6), and a device to provide clearance (3). ADVANTAGE - Simple construction.