Position measuring arrangement

Details Position measuring arrangement Position measuring arrangement

2006-05-16

2006-05-16

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

By light interference

Having light beams of different frequencies

C356S499000, C356S485000, C356S616000, C250S23700G

Reexamination Certificate

active

07046368

ABSTRACT:
A position measuring arrangement for determining a relative position between a first object and a second object. The arrangement includes a light source having a single-mode laser light source that generates radiation and a signal generator that receives the radiation and generates displacement-dependent output signals that determine a relative position between a first object and a second object. A feedback device, wherein the laser light source interacts with the feedback device in such a way that an excitation of several modes takes place in the single-mode laser light source, and a multi-mode operation of the single-mode laser light source results.

REFERENCES:
patent: 5000542 (1991-03-01), Nishimura et al.
patent: 5161165 (1992-11-01), Zorabedian
patent: 5198873 (1993-03-01), Ishizuka et al.
patent: 6473184 (2002-10-01), Ishizuka et al.
patent: WO 02/23131 (2002-03-01), None
U.S. Appl. No. 10/380,847, filed Sep. 24, 2003, Holzapfel et al.

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