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Title: 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):
6,822,733
Application Number:
10/610,192
Assignee:
The University of Chicago (Chicago, IL)
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}
}

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