US PATENT SUBCLASS 359 / 542
.~.~ Plural refracting elements formed as a unitary mass

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

515  DF  SIGNAL REFLECTOR {11}
534  DF  .~ Including a curved refracting surface {4}
542.~.~ Plural refracting elements formed as a unitary mass

DEFINITION

Classification: 359/542

Plural refracting elements formed as a unitary mass:

(under subclass 534) Subject matter including a unitary mass of transparent material which comprises a plurality of curved refracting sur-faces.

(1) Note. This unitary mass performs refraction of the incoming light prior to reflection by the reflector, and also of the outgoing light after reflection.

SEE OR SEARCH THIS CLASS, SUBCLASS:

454+, for projection screens having a unitary sheet of plural refracting areas.

530, for plural cube corner reflectors which together make up a unitary plate.

546, for discrete reflecting elements which comprise a unitary mass.