Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1989-01-11
1990-08-07
Arnold, Bruce Y.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
2504981, G02B 2602
Patent
active
049462563
ABSTRACT:
A beam shutter having a flexible ferromagnetic blade with an upright end flap and an electromagnet for flexing said blade into or out of a beam path. The shutter includes a housing having one or two sets of openings in opposed side plates thereof so as to define one or two beam paths. The blade is mounted in the housing at one end of the blade and has a diagonal fold at the opposite end to define the flap. The electromagnet comprises a core with a U-shaped cross-section defining poles and wire windings about the core. The poles have a surface with an arcuate profile which curves away from the blade toward the end with the flap. The blade is normally in a straight position but flexes into a flexed position abutting the poles whenever the electromagnet is actuated. In one normally closed embodiment the flap intersects the beam path when in the straight position. In another normally open embodiment the flap intersects the beam path when in the flexed position. In a further embodiment with two sets of openings, one beam path is intersected in one position and the other beam path is intersected in the other position.
REFERENCES:
patent: 3536910 (1970-10-01), Ormrod et al.
patent: 4082435 (1978-04-01), Zeitz
patent: 4170731 (1979-10-01), Howell et al.
patent: 4332450 (1982-06-01), Griffith
patent: 4415231 (1983-11-01), Kaczensky et al.
patent: 4799767 (1989-01-01), Woodruff
IBM Technical Disclosure Bulletin, "Thyratron Light Shutter with Automatic Latching Action", E. G. Nassimbene, vol. 8, No. 1, Jun. 1965, p. 115.
Arnold Bruce Y.
Kachmarik Ronald M.
NM Laser Products, Inc.
Schneck Thomas
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