US PATENT SUBCLASS 359 / 576-- .~.~.~ Laminated or layered

US PATENT SUBCLASS 359 / 576
.~.~.~ Laminated or layered

Current as of: June, 1999
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359 /	HD	OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

558	DF	DIFFRACTION {3}
566	DF	.~ From grating {3}
569	DF	.~.~ Including particular grating characteristic {7}
576		.~.~.~ Laminated or layered

DEFINITION

Classification: 359/576

Laminated or layered:

(under subclass 569) Subject matter wherein multiple layers of different optical materials are formed into a single mass to form the optical grating.

(1) Note. The corrugations of this type of grating are usually parallel to one another.

SEE OR SEARCH THIS CLASS, SUBCLASS:

574, for curved or geometrically shaped corrugations of a grating.

575, for nonuniform corrugation width, spacing, or depth.

586+, for laminated or layered articles which produce nondiffractive interference.

SEE OR SEARCH CLASS

264, Plastic and Nonmetallic Article Shaping or Treating: Processes, 1.7, for composite or multiple layer optical article shaping or treating.