Patent ID: 7796152

Claim:
A method, comprising: refracting a plurality of left eye rays through one of a first plurality of separating facets of a lens and receiving the refracted left eye rays at an image acquisition plane of an image capture device; and refracting a plurality of right eye rays through one of a second plurality of separating facets of the lens and receiving the refracted right eye rays at the image acquisition plane of an image capture device, wherein at least one facet of the first plurality of separating facets has a surface normal vector N S1 determined by a surface normal angle Θ SN1 included between the surface normal vector N S1 and an incident vector I c1 to intersect at a point including a cross product vector comprising a cross product of the incident vector I c1 and a refracting vector R 1 , wherein the surface normal angle Θ SN1 is approximately equal to arctan ( 1 - ( I c ⁢ ⁢ 1 · R 1 ) 2 n 1 n 2 - ( I c ⁢ ⁢ 1 · R 1 ) ) , wherein the vectors N S1 , R 1 , and I c1 are included in a common plane, wherein the incident vector I c1 comprises a ray incident to the at least one facet and passing through a first viewpoint, wherein the refracting vector R 1 comprises a ray to be refracted by the at least one facet, wherein n 1 comprises an index of refraction corresponding to the incident vector I c1 , wherein n 2 comprises an index of refraction corresponding to the refracting vector R 1 , and wherein the surface normal vector N s1 is rotated around the cross product vector by the surface normal angle Θ SN1 in the common plane.