Patent ID: 8592500
Filing Date: 2013-11-26
Classification: A61B,A61C,A61K,G01C

Abstract:
1. A composition comprising: polymeric macroparticles of a first color having a size greater than 30 μm in diameter and titanium dioxide microparticles of a second color having a size less than 5 μm in diameter combined with a liquid curable polymer, the macroparticles and the microparticles being insoluble in the liquid curable polymer; wherein the composition provides an improved optical textured surface by providing a color contrast between the first color of the macroparticles and the second color of the microparticles, sufficient to be detected by automatic image template matching and digital elevation model (DEM) generation by digital photogrammetry; wherein the macroparticles and microparticles are present in a ratio in the range of between 5:1 and 15:1; wherein a mixture of the macroparticles and the microparticles is present in the composition in a predetermined ratio with the liquid curable polymer between 1.5:1 and 3:1 by volume; and wherein the mixture of polymeric macroparticles and titanium dioxide microparticles provides a polymeric macroparticle particle size distribution at the surface of a replica or negative impression formed by the composition in the range between 30 to 150 μm.