Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1993-07-30
1995-10-03
Ben, Loha
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359197, 359198, 359872, G02B 2608
Patent
active
054557070
ABSTRACT:
An apparatus and method for multiplexing a light beam such as a laser beam with one or more optical surfaces such as mirrors is taught. In one embodiment, the apparatus includes an electromagnet, an armature, and an optical device. The optical device is mounted on the armature. The armature and the electromagnet preferably form part of an electromagnetic relay, so that actuating the electromagnet creates an electromagnetic force which moves the armature from a rest position into a responsive position near the electromagnet, thereby moving the optical device into an active position wherein the optical device engages the light beam. In a presently preferred embodiment, the apparatus also includes a leaf spring which urges the armature, and hence the optical device, away from the electromagnet when the electromagnetic force is absent. According to the method of the present invention, the optical device engages the light beam at a substantially constant angle and at a substantially constant distance from the light beam's origin, thereby reducing or eliminating misdirection of the beam as the optical device travels between the active and passive positions.
REFERENCES:
patent: 4383328 (1983-05-01), Kurihara
patent: 4413352 (1983-11-01), Nishio
patent: 4958894 (1990-09-01), Khowles
patent: 5015071 (1991-05-01), Richter et al.
Ben Loha
Ion Laser Technology
Phan James
LandOfFree
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