Excimer laser with magnetic bearings supporting fan

Details Excimer laser with magnetic bearings supporting fan Excimer laser with magnetic bearings supporting fan

1997-07-11

1998-12-08

Lee, John D.

Coherent light generators

Particular active media

Gas

372 57, 372 98, H01S 3225

Patent

active

058480897

ABSTRACT:
An electric discharge gas laser having a laser cavity in which is contained a laser gas and a fan for circulating the laser gas. The fan is supported by an active magnetic bearing system and driven by a brushless DC motor in which the rotor of the motor and at least two magnetic bearings sealed within the gas environment of the laser cavity and the motor stator and the coils of the bearing magnets are located outside the gas environment.

REFERENCES:
patent: 4891818 (1990-01-01), Levatter
patent: 4959840 (1990-09-01), Akins et al.
patent: 5023884 (1991-06-01), Akins et al.
patent: 5727011 (1998-03-01), Choo et al.
patent: 5770933 (1998-06-01), Larson et al.
O'Connor, Leo, "Active Magnetic Bearings Give Systems A Lift", Mechanical Engineering, Jul. 1992, vol. 114, No. 7, pp. 52-57.
"A bearing that won't wear out? New design gives engineers a taste of the Name!.
McCarty, Lyle H., "Hybrid Designs Lightens Magnetic Bearings", Design News, Jun. 11, 1990, vol. 46, pp. 156-157.
Leovy, Jill, "Putting a New Spin on Machinery of Future", Los Angeles Times, Nov. 1, 1994, p. 4.

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