Hand-held spectra-reflectometer
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United States of America Patent
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Apr 24, 2007
Grant Date -
Dec 22, 2005
app pub date -
Jun 20, 2005
filing date -
Jun 18, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is directed to apparatus and method for measuring the spectral characteristics of an object surface. The apparatus comprises a light source for generating an input signal comprising a plurality of wavelengths of energy and a diffraction grating for diffracting the input signal into a plurality of diffracted wavelengths of energy. A resonant mirror assembly associated with the diffraction grating sequentially directs a select diffracted wavelength to the object surface to generate a corresponding reflected wavelength of energy. The apparatus further comprises a sensor for determining each select diffracted wavelength of energy directed to the object surface and a detector for detecting one or more of the reflected wavelengths. The detector is coupled with the sensor for associating each select diffracted wavelength with each corresponding reflected wavelength.
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