US PATENT SUBCLASS 359 / 389
.~.~.~ With illumination and viewing paths coaxial at the image field

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

362  DF  COMPOUND LENS SYSTEM {8}
368  DF  .~ Microscope {10}
385  DF  .~.~ Illuminator {5}
389.~.~.~ With illumination and viewing paths coaxial at the image field

DEFINITION

Classification: 359/389

With illuminating and viewing paths coaxial at the image field:

(under subclass 385) Subject matter wherein the illuminating light is transmitted through a space occupied by the image field.

(1) Note. A partially transmitting beam splitter is commonly used in devices in this subclass (389).

SEE OR SEARCH THIS CLASS, SUBCLASS:

799, for a lens with a coaxial illuminating beam.