Optics: measuring and testing – Of light reflection – With diffusion
Reexamination Certificate
2006-06-13
2006-06-13
Stafira, Michael P. (Department: 2877)
Optics: measuring and testing
Of light reflection
With diffusion
Reexamination Certificate
active
07061617
ABSTRACT:
Methods and apparatus for determining the optical characteristics of cosmetic substances are disclosed. The method includes illuminating the surface of the substance with an incident light beam so as to form a back-scatter spot, obtaining an image of the back-scatter spot, and analyzing the variations in brightness of the image at a number of points so as to determine the optical characteristic in question.
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Querleux Bernard
Saint-Jalmes Herve
"L'Oreal"
Lerner David Littenberg Krumholz & Mentlik LLP
Stafira Michael P.
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