(under subclass 43) Subject matter which includes means to selectively detect at least two different bands of visible radiation simultaneously or sequentially from an emission source, and means responsive to the detection means to indicate the color temperature of the emissive source.
(1) Note. Where the indication of the test is not stated in the claims in terms of temperature, classification is in
subclass 404 when photography is involved or in subclass 407 when plural colors are simultaneously tested, or in subclass 408 for sequential comparison tests of a sample and a standard.
SEE OR SEARCH THIS CLASS, SUBCLASS:
405, for tristimulus test devices.
406, for shade or color tests involving three colors.
419, for devices which sequentially utilize plural color filters. SEE OR SEARCH CLASS
374, Thermal Measuring and Testing,
127, for nonoptical radiation type pyrometers which may be responsive to purals ranges of electromagnetic radiation.
