US PATENT SUBCLASS 348 / 781
.~.~.~ With optical element

Current as of: June, 1999
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348 /   HD   TELEVISION

739  DF  VIDEO DISPLAY {13}
744  DF  .~ Projection device {7}
776  DF  .~.~ Cathode-ray tube image source {4}
781.~.~.~ With optical element {3}
782  DF  .~.~.~.~> Mirror arrangement {1}
785  DF  .~.~.~.~> Adjustable
786  DF  .~.~.~.~> With screen or absorption filter

DEFINITION

Classification: 348/781

With optical element:

(under subclass 776) Subject matter including a structure which performs a basic optical function (i.e., the structure when exposed to or placed in the path of a group of light rays will cause a deviation, a blocking of the rays, or a modification in a character or a property of the light).

SEE OR SEARCH CLASS

359, Optics: Systems (Including Communication) and Elements, appropriate subclasses for a specific optical element.