(under subclass 336) Subject matter in which the means that produces the change in electric potential difference or current flow is a photodetector responsive to incident visible light emitted from a means which passively converts the energy of incident invisible radiation into visible radiation.
(1) Note. The means that produces the change in electrical potential difference or current flow is usually a photocell, photomutiplier or iconoscope.
(2) Note. Included in this subclass and the subclasses indented hereunder are means for producing and detecting Cerenkov radiation.
(3) Note. The luminophor may be a luminescent material to be tested by invisible radiation or it may be a means to test incident invisible radiation. In either case, the response of the luminiphor is indicated electrically.
SEE OR SEARCH THIS CLASS, SUBCLASS:
200+, for visible light responsive electric signalling means without an invisible-to-visible radiation converting luminophor.
389, for photoemmissive detectors without a luminophor invisible-to-visible converter. 458.1+, for methods and means for irradiating luminophors, per se.
483.1+, for luminescent means for signalling by its luminescence, per se, the incidence of invisible radiation.
SEE OR SEARCH CLASS
356, Optics: Measuring and Testing, appropriate subclasses for light responsive photocell detectors, see particularly the class definition, Lines With Other Classes, "Fluorescence and Phosphorescence Testing" and "Lasers and Resonance Radiation" and the notes to
