US PATENT SUBCLASS 359 / 741
.~ With multipart element

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

642  DF  LENS {32}
741.~ With multipart element {1}
742  DF  .~.~> Echelon (e.g., Fresnel lens, etc.) {1}

DEFINITION

Classification: 359/741

With multipart element:

(under subclass 642) Subject matter wherein a lens element is formed of a plurality of elements arranged side by side, transverse to the optical axis, and cooperating to form a single image.

(1) Note. The subject matter under this definition differs from the subject matter provided for in subclasses 754+ in that the various parts of the component or element in subclasses 754+ are in series along the optical axis of the component or element, while the various parts of the component or element of this subclass are in edge to edge relation, transversely of the optical axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

619+, for lenticular lenses where each element forms a spatially separate image of a single element.

SEE OR SEARCH CLASS

126, Stoves and Furnaces,

698, for lenses employed in solar heating.