US PATENT SUBCLASS 250 / 559.16
.~.~ Detection of diffuse light

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


250 /   HD   RADIANT ENERGY

200  DF  PHOTOCELLS; CIRCUITS AND APPARATUS {11}
559.01  DF  .~ With circuit for evaluating a web, strand, strip, or sheet {13}
559.16.~.~ Detection of diffuse light {2}
559.17  DF  .~.~.~> With diffusion optics
559.18  DF  .~.~.~> With discrimination of discrete light diffusing region

DEFINITION

Classification: 250/559.16

Detection of diffuse light:

(under subclass 559.01) Subject matter wherein detection means are arranged to receive non-specularly reflected light from the material (i.e., the angle of the light reflected from the material is not equal to the angle of the light incident to the material).

SEE OR SEARCH CLASS

356, Optics: Measuring and Testing,

446, for optical measuring with diffusion of reflected light.