1988-01-07
1989-08-29
Arnold, Bruce Y.
350360, 350487, 350610, G02B 718, G02B 508
Patent
active
048611492
ABSTRACT:
A magnetodistortive acutator arrangement for a flexible mirror that is mounted on a support includes an array of magnetodistortive actuators. Each of these actuators includes an elongated core of a highly magnetically permeable material stationarily mounted on the support, centered on a longitudinal axis and having two axially spaced end portions, a solenoid coil surrounding one of the end portions of the core and operative when energized for generating an electromagnetic field which permeates the core and has a high intensity region extending beyond the other of the end portions of the core, an active member of a magnetodistortive material connected to the core and extending axially beyond the other end portion thereof at least partially through the high-intensity region of the electromagnetic field for the latter to cause a change at least the axial dimension of the active member, and a transmitting member which applies this change to the flexible mirror. The coils of adjacent actuators are axially staggered relative to one another so as not to overlap each other.
REFERENCES:
patent: 1525548 (1925-02-01), Jenkins
patent: 2036554 (1936-04-01), Thomas
patent: 4202605 (1980-05-01), Heinz
patent: 4655560 (1987-04-01), Glomb, Jr.
Arnold Bruce Y.
Lerner Martin
Ruzek Peter R.
United Technologies Corporation
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