.~ With sample responsive to plural colors applied simultaneously
DEFINITION
Classification: 356/407
With sample responsive to plural colors applied simultaneously:
(under subclass 402) Subject matter which includes means to simultaneously transmit or reflect at least two different colored bands or frequencies of light, through or from the sample, means to filter the modified light into two different bands of light, and detector and indicating means responsive to the light modified by the sample and after filtering to note the intensity of the different bands of light.
SEE OR SEARCH THIS CLASS, SUBCLASS:
45, for plural color responsive optical pyrometers including photos:graphic and metallurgical types.
300, for spectroscopic examination of apparatus which uses a dispersing means rather than a filter to detect or examine the various bands of light.
366+, for devices which use an analyzer and a polarizer in the light path of a device testing light or a substance optically.
SEE OR SEARCH CLASS
209, Classifying, Separating, and Assorting Solids, particularly 582, for the physical separation of articles based on a color test, which involves at least two different colors.
235, Registers,
61+, and 150+ for apparatus responsive to a color test which performs a mathematical function to indicate a quantity correlated to the color test.
250, Radiant Energy,
201.1+, 206+, and 226 for plural photosensitive color circuits where no support for a sample is included in the claims or where no indicator for the light used in the test is included in the claims.
359, Optics: Systems (Including Communication) and Elements,
