Translucency measurement
AssigneeDia-Stron Limited
InventorsStephen Paul Bucknell, Nigel John Peter Winsey, Desmond Roy Gale
Life of this patent
Estimating the term…
Abstract
The translucency of a material is determined by illuminating the material and detecting the intensity of radiation leaving the material as a function of distance from the radiation source. The resulting measurements may be used to determine a "translucency gradient" for the material. In the case of materials in sheet form or having a defined thickness, the translucency can be measured in transmission mode or back scattering mode to measure "through translucency" or "surface translucency".
Claims17
A method of determining the translucency of a material including illuminating the material at a point or area on its surface with a radiation source, measuring the intensity of radiation leaving the same surface of the material at several different lateral distances from the point or area of illumination using apparatus in contact with the surface and using exponential curve fitting to determine the rate of change of the intensity as a function of lateral distance from the point or area of illumination.
Apparatus for measuring the translucency of a material comprising a radiation source, means for simultaneously measuring the intensity of radiation leaving the material at several different lateral distances from the point or area of illumination of the material and means for fitting intensity and distance measurements to an exponential curve to determine the rate of change of the intensity as a function of distance.
A method of determining the translucency of a material including illuminating the material at a point or area on its surface with a radiation source, measuring the intensity of radiation leaving an opposite surface of the material at several lateral distances from the point or area of illumination and using exponential curve fitting to determine the rate of change of the intensity as a function of lateral distance from the point or area of illumination.
Dependencies are inferred from the claim text.