Browsing Patents by Subject "G01J 3/427 (20130101)"
Now showing items 1-3 of 3
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Conversion of Dual Wave Beam Spectrophotometer to Dual Wavelength Spectrophotometer
(U.S. Patent and Trademark Office, 1990-05-29)A conversion and kit for a dual beam spectrophotometer permitting it to operate in dual wavelength mode and thereby obtaining resolution heretofore unavailable from similar machines. The present invention provides for a ... -
Optical Spectral Reflectance Sensor and Controller
(U.S. Patent and Trademark Office, 2003-07-22)A spectral reflectance sensor including: a light source for emitting a modulated beam of red light; a light source for emitting a modulated beam of near infrared light; a receiver for receiving reflected light produced by ... -
Optical Spectral Reflectance Sensor and Controller
(U.S. Patent and Trademark Office, 2005-02-15)A spectral reflectance sensor including: a light source for emitting a modulated beam of red light; a light source for emitting a modulated beam of near infrared light; a receiver for receiving reflected light produced by ...