Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1990-05-25
1992-07-07
Turner, Samuel A.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
356354, 250237G, 385 14, G01B 902
Patent
active
051277336
ABSTRACT:
A photoelectric measuring device for measuring the relative position between two objects utilizing interfering lightwave patterns is provided. Two diffraction gratings having an equal grid constants are provided to perpendicularly impinge beam bundles into circular coupling-in gratings of the integrated optical circuit. In addition, an integrated light source may be coupled-out of the integrated optical circuit.
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Dr. Johannes Heidenhain GmbH
Turner Samuel A.
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