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Accurate metrology for focal plane astronomical instruments
(SPIE, 2022)
© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.Accurate positioning of opto-mechanical elements in the focal plane of large telescopes is a challenging requirements for many state of the ...
Principios básicos de metrología dimensional
(2015-07-01)
Metrology is the science that treats about the measurements, about the systems of units and the instruments used to carry out and to interpret them. It includes several fields, such as the thermal, electrical, acoustic, ...
Michelson interferometer vibrometer using self-correcting synthetic-heterodyne demodulation
(Optical Soc Amer, 2015)
Michelson interferometer vibrometer using self-correcting synthetic-heterodyne demodulation
(Optical Soc Amer, 2015-06-20)
Synthetic-heterodyne demodulation is a useful technique for dynamic displacement and velocity detection in interferometric sensors, as it can provide an output signal that is immune to interferometric drift. With the advent ...
Michelson interferometer vibrometer using self-correcting synthetic-heterodyne demodulation
(Optical Soc Amer, 2015)
Performance of an optical encoder based on a nondiffractive beam implemented with a specific photodetection integrated circuit and a diffractive optical element
(Optical Society of America, 2015-09)
In this paper, we study the incremental signal produced by an optical encoder based on a nondiffractive beam (NDB). The NDB is generated by means of a diffractive optical element (DOE). The detection system is composed by ...