.~.~ Including particular grating characteristic {7}
574
.~.~.~ With curved or geometrically shaped corrugation
DEFINITION
Classification: 359/574
With curved or geometrically shaped corruga-tion:
(under subclass 569) Subject matter wherein the grating has at least one ridge or groove for the light to impinge and the edges of the ridge or groove are either nonlinear or form some geometrical shape by the connection of plural lines.
(1) Note. The geometric corrugations are in the form of a circle, parallelogram, rhombus, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
575, for nonuniform corrugation width, spacing, or depth.
576, for a laminated or layered grating which usually has parallel corrugations.
