Patent ID: 6856727

Claim:
A NA equalizing apparatus comprising: a transmission element, said transmission element having an input surface; said input surface having a first input dimension and a second input dimension, said second input dimension being substantially orthogonal to said first input dimension; and wherein said first input dimension is substantially unequal to said second input dimension; and wherein said transmission element comprises further: an axis; an output surface, said output surface comprising: a first output dimension and a second output dimension, said second output dimension being substantially orthogonal to said first output dimension, said second output dimension being substantially parallel to said second input dimension; and a first input NA in a plane of said first input dimension and said axis; a second input NA in a plane of said second input dimension and said axis; wherein a first ratio of a first product of said first input dimension and said first input NA to said first output dimension is substantially equal to a second ratio of a second product of said second input dimension and said second input NA to said second output dimension.