Method for evaluating color tone of coating film and device for

Details Method for evaluating color tone of coating film and device for Method for evaluating color tone of coating film and device for

1990-07-18

1992-09-29

Evans, F. L.

Optics: measuring and testing

By shade or color

356405, 356446, G01J 346, G01N 2125, G01N 2127

Patent

active

051517515

ABSTRACT:
A method giving a color tone-evaluating result which catches the deepness and transparency feelings of a coating film in an objective manner, and a device for use of this method. The evaluating results are obtained by projecting a luminous flux on a coating film, the high light saturation and/or high light excitation purity of the coating film are gotten on a basis of a high light part which is in an angle range of 5.degree. to 15.degree. against the regularly reflecting luminous flux in the reflecting light, and that, if necessary, the shade saturation and/or shade excitation purity are gotten on a basis of a shade part which is in an angle range exceeding 15.degree..

REFERENCES:
patent: 4359504 (1982-11-01), Troy
patent: 4479718 (1984-10-01), Alman

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