US PATENT SUBCLASS 359 / 366
.~.~.~ Concave, convex combination

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

362  DF  COMPOUND LENS SYSTEM {8}
364  DF  .~ With curved reflective imaging element {1}
365  DF  .~.~ Two or more in a series {1}
366.~.~.~ Concave, convex combination

DEFINITION

Classification: 359/366

Concave, convex combination:

(under subclass 365) Subject matter wherein the plurality of curved reflectors include at least one concave and at least one convex reflector.