.~.~.~ With spectral frequency/wavelength discrimination
DEFINITION
Classification: 250/227.23
With spectral frequency/wavelength discrimination:
(under subclass 227.11) Subject matter including means for selecting and transmitting light of one or more discrete wavelengths or wavelength bands by the light conductor(s) to the photocell(s).
(1) Note. The intensity of the light of different wavelengths may be varied by using, for example, polarizers, diaphragms, etc.
(2) Note. This subclass provides for significant light conductor means in detecting color, whereas subclass 226 is directed to color detection broadly.
SEE OR SEARCH THIS CLASS, SUBCLASS:
226, color (e.g., filter or spectroscope), for related subject matter that may or may not include light conductors,
SEE OR SEARCH CLASS
209, Classifying, Separating, and Assorting Solids, 580+, for sorting articles based on their color.
356, Optics: Measuring and Testing,
402+, measuring and testing color of an object; subclasses 300+ for measuring and testing by dispersed light spectroscopy; and subclass 346, measuring and testing by interferometric spectroscopy.
436, Chemistry: Analytical and Immunological Testing,
164+, optical result, including subclass 171, optical spectrum, where the test and the result involves a chemical reaction.
702, Data Processing: Measuring, Calibrating, or Testing, appropriate subclasses.
