Apparatus for measuring optical properties of paper

Details Apparatus for measuring optical properties of paper Apparatus for measuring optical properties of paper

G - Physics

01

N

73/58

G01N 21/84 (2006.01) G01N 21/86 (2006.01)

Patent

CA 1225534

ABSTRACT The available equipment for measuring optic- al properties of paper are inconvenient in use and calibration thereof is inaccurate. In addition, pro- perties of a sample are not analysed sufficiently. According to the invention, a background screen (2) of an apparatus is adapted to be displaced relative to housing (1) and provided with elements (17-21) for measuring optical properties and calibrating said apparatus. In addition, an assembly (9-15) for pro- cessing scattered light comprises a grid (13) and at least one limiter (15), positioned between detector (16) and grid in the immediate proximity of detector and adapted to be movable along with detector over the entire range of a spectrum. (Fig. 1)

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