US PATENT SUBCLASS 359 / 633
.~.~.~ With additional reflector (e.g., serial reflections, etc.)

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}
633.~.~.~ With additional reflector (e.g., serial reflections, etc.)

DEFINITION

Classification: 359/633

With additional reflector (e.g., serial reflections, etc.):

(under subclass 630) Subject matter having an image reflecting element additional to a partially reflective light combiner or divider.

(1) Note. This additional reflecting element may be another partially reflecting element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

850, for a plural mirror optical system.