US Patent: 5,940,180
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| Laser Interferometer Measurement System for Use With Machine Tools
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Patentee:
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| Lyle D. Ostby (exact or similar names) - Sussex, Waukesha County, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 28, 1995 |
| Granted: |
Aug. 17, 1999 |
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Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.
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Description: |
| This Application is a Continuation-in-part of U.S. Patent Application (Now U.S. Pat. No. 5,489,168), Entitled Metrology Instrument Arm System, Filed on Oct. 11, 1994.
Abstract:
A measurement system for precisely measuring the distance between two points is disclosed. The measurement system includes a laser interferometer assembly having a beam splitter and a first reflector disposed to reflect a laser beam along a linear path. The laser interferometer assembly cooperates with a deadpath elimination cell having a sealed hollow interior region. The hollow interior region is sealed by at least one window disposed at the end of the hollow interior region proximate the first reflector. A second reflector is disposed on the opposite side of the hollow interior region and is oriented to reflect the laser beam back along the linear path. Thus, the volume and quantity of gas within the hollow interior remains constant to increase the accuracy in measuring the distance between the first and second reflectors. |
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