US PATENT SUBCLASS 359 / 489
.~.~ Polarization (direction or magnitude) varies over surface of the medium (e.g., vectograph)

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}
489.~.~ Polarization (direction or magnitude) varies over surface of the medium (e.g., vectograph)

DEFINITION

Classification: 359/489

Polarization (direction or magnitude) varies over surface of the medium (e.g., vectograph):

(under subclass 485) Subject matter comprising a surface which transmits or reflects light and whose ability to polarize light is not uniform across the surface.

(1) Note. This variation in polarizing ability may be continuous or discontinuous and may form any type of pattern. For example, the different areas of a surface may form an image or design as in a "vectograph".