(under subclass 201.2) Subject matter in which the focusing is based on geometric triangulation using a baseline distance between at least two photocells.
(1) Note. This subject matter differs from that in Class 356, subclasses 3.01+ in that subject matter in this subclass provides for triangulation to achieve automatic focus control of an optical pre-photocell system whereas subject, matter in Class 356, subclasses 3.01+ uses triangulation to measure the distance of an object from the photocell or pre-photocell system.
