US PATENT SUBCLASS 359 / 497
.~.~.~ Using plural elements

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

483  DF  POLARIZATION WITHOUT MODULATION {2}
485  DF  .~ Light polarization without any external input {8}
494  DF  .~.~ By birefringent element {4}
497.~.~.~ Using plural elements {2}
498  DF  .~.~.~.~> Frequency filter or interference effects
499  DF  .~.~.~.~> Using compensation techniques

DEFINITION

Classification: 359/497

Using plural elements:

(under subclass 494) Subject matter wherein beam polarization is achieved by multiple birefringent elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:

250, for plural mediums in electro-optic polarized light modulation.

301+, for plural mediums used to deflect the beam where at least one of the mediums is field responsive.

371, and 386, for microscopes using polarized light which may utilize birefringent elements.

455+, for lenticular projection screens with birefringent elements

496, and 497+, for prism structures made up of plural elements and for plural element polarization.