US PATENT SUBCLASS 359 / 631
.~.~.~ Including curved reflector

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

618  DF  SINGLE CHANNEL SIMULTANEOUSLY TO OR FROM PLURAL CHANNELS (E.G., LIGHT DIVIDING, COMBINING, OR PLURAL IMAGE FORMING, ETC.) {3}
629  DF  .~ By partial reflection at beam splitting or combining surface {6}
630  DF  .~.~ Superimposing visual information on observer's field of view (e.g., head-up arrangement, etc.) {3}
631.~.~.~ Including curved reflector

DEFINITION

Classification: 359/631

Including curved reflector:

(under subclass 630) Subject matter including a reflecting element having a surface with a smoothly concave or convex configuration in the optical path of the light that produces an image.

(1) Note. The curved configuration may be for focusing or collimating reflected light rays.

(2) Note. Helmet mounted partial reflectors and curved windsheild light com-bining systems are classified in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

364+, for compound lens system with curved reflective imaging element.

726+, for lenses with reflecting element.

831+, for prisms, per se.

838+, for mirrors, per se.