.~.~.~> With plural detectors (e.g., simultaneous viewing)
DEFINITION
Classification: 356/434
Photoelectric (e.g., sequential viewing):
(under subclass 433) Subject matter including a photosensitive device which is responsive to the light passing through the specimen.
SEE OR SEARCH THIS CLASS, SUBCLASS:
218+, for photoelectric photometers of the comparator type.
402+, for colorimeters of the photoelectric comparator type.
SEE OR SEARCH CLASS
250, Radiant Energy,
216+, for photocell circuits of the comparator type with optical or prephotocell systems; and subclasses 204+ for control of the light used by the system directly or indirectly as by controlling the optical elements in the light path to the photocell detector.
