Optical design for laser encoder resolution extension with three-dimensional motion decoupling
Abstract
An optical system is provided for laser encoder resolution extension with three-dimensional motion decoupling capability. The optical system includes a first prism mounted on a moving target, and a plurality of prisms, a retroreflector, a laser source, and a detector mounted on a fixed base. The moving target has three-dimensional linear motion freedom. The first prism on the moving target and the plurality of prisms and the retroreflector on the fixed base reflect a laser beam from the laser source to the detector define a three-dimensional optical path. The three-dimensional optical path provides multiple times optical resolution extension power for linear displacement measurement and encoding. This optic system is only sensible to the target motion on X direction and is substantially unaffected by movement in the Y and Z directions.
- Inventors:
- Issue Date:
- Research Org.:
- The Univ. of Chicago, Chicago, IL (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1531487
- Patent Number(s):
- 6822733
- Application Number:
- 10/610,192
- Assignee:
- The University of Chicago (Chicago, IL)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
G - PHYSICS G01 - MEASURING G01C - MEASURING DISTANCES, LEVELS OR BEARINGS
- DOE Contract Number:
- W-31-109-ENG-38
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2003-06-30
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Shu, Deming. Optical design for laser encoder resolution extension with three-dimensional motion decoupling. United States: N. p., 2004.
Web.
Shu, Deming. Optical design for laser encoder resolution extension with three-dimensional motion decoupling. United States.
Shu, Deming. Tue .
"Optical design for laser encoder resolution extension with three-dimensional motion decoupling". United States. https://www.osti.gov/servlets/purl/1531487.
@article{osti_1531487,
title = {Optical design for laser encoder resolution extension with three-dimensional motion decoupling},
author = {Shu, Deming},
abstractNote = {An optical system is provided for laser encoder resolution extension with three-dimensional motion decoupling capability. The optical system includes a first prism mounted on a moving target, and a plurality of prisms, a retroreflector, a laser source, and a detector mounted on a fixed base. The moving target has three-dimensional linear motion freedom. The first prism on the moving target and the plurality of prisms and the retroreflector on the fixed base reflect a laser beam from the laser source to the detector define a three-dimensional optical path. The three-dimensional optical path provides multiple times optical resolution extension power for linear displacement measurement and encoding. This optic system is only sensible to the target motion on X direction and is substantially unaffected by movement in the Y and Z directions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {11}
}
Works referenced in this record:
Optical design for laser encoder resolution extension and angular measurement
patent, April 1999
- Shu, Deming
- US Patent Document 5,896,200
Method and Apparatus for Optically Monitoring the Angular Position of a Rotating Mirror
patent, April 1974
- Fletcher, James C.; Lansing, Jr., Jack C.; Cline, Richard W.
- US Patent Document 3802779
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