US PATENT SUBCLASS 359 / 485
.~ Light polarization without any external input

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

483  DF  POLARIZATION WITHOUT MODULATION {2}
485.~ Light polarization without any external input {8}
486  DF  .~.~> By grid or dipoles
487  DF  .~.~> By reflection or refraction (e.g., Brewster angle) {1}
489  DF  .~.~> Polarization (direction or magnitude) varies over surface of the medium (e.g., vectograph)
490  DF  .~.~> By dichroic medium {2}
493  DF  .~.~> Glare prevention by discriminating against polarized light
494  DF  .~.~> By birefringent element {4}
501  DF  .~.~> By relatively adjustable superimposed or in series polarizers
502  DF  .~.~> With color filter

DEFINITION

Classification: 359/485

Light polarization without any external input:

(under subclass 483) Subject matter wherein an optical device causes optical energy to vibrate in accordance with a regular pattern that differs from the input without the application of any supplemental energy.

SEE OR SEARCH CLASS

346, Recorders,

107.1+, for photos:graphic recorder systems where a phenomenal record is made of an output signal.

347, Incremental Printing of Symbolic Information,

224+, for apparatus or processes for marking record receiver using radiation energy (e.g., light or beam), subclasses 129+ for electrostatic marking apparatus or processes including photo scanning device.

356, Optics: Measuring and Testing,

368, for polarimeters which include electro-optical light rotation.