US PATENT SUBCLASS 359 / 250
.~.~.~.~.~ Using plural mediums

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

237  DF  OPTICAL MODULATOR {3}
238  DF  .~ Light wave temporal modulation (e.g., frequency, amplitude, etc.) {3}
240  DF  .~.~ Changing bulk optical parameter {5}
245  DF  .~.~.~ Electro-optic {11}
246  DF  .~.~.~.~ Modulation of polarized light via modulating input signal {10}
250.~.~.~.~.~ Using plural mediums

DEFINITION

Classification: 359/250

Using plural mediums:

(under subclass 246) Subject matter wherein more than one medium or structure, each of which modulates the beam, are provided.

(1) Note. The mediums or structures in the beam path, layered mediums transverse to the beam path or parallel paths, each containing a medium where the output beam is the result of the combined action of the medium or structure. Not all of the mediums need to be field responsive.

(2) Note. Initial polarizers and final analyzers are not considered part of the plural mediums where the only affect is to select a polarization. Plural areas formed by a matrix of electrodes whose sole function is to act on a portion of the beam are not considered plural mediums. Nonbirefringent lenses are also not considered a medium in the sense of the definition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

249, for plural mediums where the purpose of the mediums is compensation.

301+, for plural mediums used to deflect the beam or a portion of the beam.

497, for polarization achieved by plural birefringent elements.