Patent ID: 8777225
Filing Date: 2014-07-15
Classification: A63F,G09F,Y10T

Abstract:
1. A deck of playing cards wherein at least one card comprises: a base layer that bears a front surface and a back surface, with game markings disposed on the front surface; and a substantially planar holographic optical element disposed on the front surface and being operatively configured to form a holographic image of additional markings different from the game markings that are viewable over at least a portion of the front surface; said holographic optical element being manufactured to produce said holographic image that is not viewable over a first range of directions that includes a viewing direction line normal to the front surface and extends to a second viewing line that subtends an acute angle with respect to the direction line normal to the front surface; said holographic optical element being further manufactured to produce said holographic image that is viewable over a second range of directions that does not overlap the first range of directions; said holographic optical element being of a type that is substantially transparent, to render viewable the game markings from both first and second range of directions.