Overhead transparency clarity simulator

Details Overhead transparency clarity simulator Overhead transparency clarity simulator

2006-12-19

2006-12-19

Lauchman, Layla (Department: 2877)

Optics: measuring and testing

By particle light scattering

With photocell detection

C356S239100, C356S433000, C356S443000

Reexamination Certificate

active

07151603

ABSTRACT:
A method and apparatus for evaluating the scattering properties of a transparency image comprises projecting radiation through the transparency image to form a transmitted beam of radiation; splitting the transmitted beam of radiation into at least two distinct beams of radiation, a first distinct beam and a second distinct beam; measuring a first amount of energy in the first distinct beam that corresponds to non-scattered light; measuring a second amount of energy in the second distinct beam that corresponds to scattered light; and comparing the first amount of energy to the second amount of energy to determine the proportion of the transmitted beam of radiation that is not scattered.

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