Patent ID: 6726858
Filing Date: 2004-04-27
Classification: B29D,G02B

Abstract:
A method of forming a lenticular sheet for use in forming a substantially ghost-free lenticular image, said method comprising:providing a means for forming a lenticular sheet; and forming the lenticular sheet out of a polymeric material using said means, the lenticular sheet having an actual thickness (da) that is within about Â±15% of an optimal thickness (do) as determined according to the formula: do=(n&it;â€ƒ&it;s-1)&it;rs&af;(n-1)â€ƒwherein n is the refractive index of the polymeric material, s is the number of interlaced scenes in the lenticular image, and r is the radius of the lenticles in the lenticular sheet.