FIELD: measuring technology. SUBSTANCE: device has a single-frequency laser for generating linearly polarized radiation, telescopic system, light splitter, two corner reflectors one of which is located in a measuring arm and the other is located in a reference arm, quarter-wave plate located in the measuring arm and two polarizers. The light passed through all these components is applied into a photoelectric system for processing quadrature interference signals occurring due to the fact that the polarizers are located such that their main transmission axes are orthogonal to each other and disposed at an angle of 45 ± 1° to the laser radiation polarization direction. EFFECT: simplified construction and enhanced measurement accuracy. 1 dwg
Title | Year | Author | Number |
---|---|---|---|
DEVICE MEASURING TRANSLATIONS | 1991 |
|
RU2087858C1 |
INTERFEROMETER TO MEASURE MOVEMENTS | 1997 |
|
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LASER INTERFEROMETER | 0 |
|
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METHOD OF BUILDING INTERFERENCE PATTERNS WITH PHASE SHIFT FROM 0 TO 180 | 0 |
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PENDULUM LASER INTERFEROMETER | 2010 |
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RU2434201C1 |
INTERFEROMETER FOR MEASURING DISPLACEMENTS | 0 |
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DEVICE FOR MEASURING DISPLACEMENT | 0 |
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Authors
Dates
1994-12-30—Published
1991-06-13—Filed