Device for focusing electromagnetic waves or sound

Details Device for focusing electromagnetic waves or sound Device for focusing electromagnetic waves or sound

1988-01-19

1989-01-10

Corbin, John K.

350255, E02B 702

Patent

active

047969741

ABSTRACT:
A device for focusing electromagnetic waves or sound, comprising a focusing element (1) fitted in a holder (2). This holder is supported in such a way that moving in three directions perpendicular to each other (X, Y and Z directions) is possible. Drive units (6, 26, 34) are used to move the holder independently in these three directions. To provide for very accurately controllable small movements of the holder in the X, Y and Z direction, the holder rests by means of hinges (7) on at least three legs (4) which at their bottom ends are connected by means of hinges (7) to a structure (5) which can be moved in the Z direction. The holder (2) for movement in the X and Y directions is hingedly connected by two perpendicular edges to a strip which can be moved to and fro by means of a drive element (26, 34).

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Bingham et al, "Joystick Control for Inspection Apparatus," IBM Technical Disclosure Bulletin, vol. 12, No. 11, Apr. 1970, pp. 1879-1880.
Harvey et al, "A Miniature Lens Scanner for Acoustic Microscopy," 1983 Ultrasonics Symposium Proceedings, vol. 2, 1983, pp. 605-610.
Davidovits et al, "Scanning Laser Microscope," Nature, vol. 223, No. 5208, Aug. 23, 1969, p. 831.

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