Optical measurement method and system
AssigneeSpectral Engines Oy
InventorsJarkko Antila, Uula Kantojärvi, Jussi Mäkynen
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Abstract
The present invention concerns a method for an optical measurement method including the following steps: illuminating an object by light, receiving light from the illuminated object to a tunable Fabry-Perot interferometer, changing mirror gap of the Fabry-Perot interferometer, and detecting the signal passed through the mirror gap of the Fabry-Perot interferometer at different gap lengths. In accordance with the invention the detection is performed at different lengths of times at different gap lengths.
Claims16
An optical measurement method comprising the steps of:
- illuminating an object by light,
- receiving light from the illuminated object to a tunable Fabry-Perot interferometer,
- changing mirror gap of the Fabry-Perot interferometer,
- detecting the signal passed through the mirror gap of the Fabry-Perot interferometer at different gap lengths, and
- performing the detection at different lengths of times at different gap lengths.
An optical measurement method comprising the steps of:
- receiving from an operator desired wavelengths, their weighted importance and maximum measurement time,
- measuring by a spectrometer or a Fabry-Perot interferometer the spectrum at the desired wavelengths with minimum gain,
- increasing the gain at each wavelength so much that the overall signal level is about 90% of the maximum amplitude, and
- increasing the measurement time with the desired weighted importance such that the desired maximum measurement time is reached.
An optical measurement system comprising means for:
- illuminating an object by light,
- receiving light from the illuminated object to a tunable Fabry-Perot interferometer,
- changing the mirror gap of the Fabry-Perot interferometer,
- detecting the signal passed through the mirror gap of the Fabry-Perot interferometer at different gap lengths, and
- performing the detection at different lengths of times at different gap lengths.
An optical measurement system comprising means for—:
- receiving from an operator desired wavelengths, their weighted importance and maximum measurement time,
- measuring by a spectrometer or a Fabry-Perot interferometer the spectrum at the desired wavelengths with minimum gain,
- increasing the gain at each wavelength so much that the overall signal level is about 90% of the maximum amplitude, and
- increasing the measurement time with the desired weighted importance such that the desired maximum measurement time is reached.
Dependencies are inferred from the claim text.