Patent Document ID: 9726859
Application ID: 14810377
Patent Status: 1

Claim One:
1. An optical assembly including an aspheric surface among multiple lens elements for a digital camera that captures images having a wide field of view in excess of 120 degrees, comprising: from object end to image end, first and second optical groups separated by an aperture stop and configured to provide images with TV distortion (TVdist) less than 16%, where TVdist=ΔH/H×100%, and H is the undistorted image height, and ΔH is the difference between the undistorted and distorted image heights; wherein said first optical group comprises two or more lens elements, including a first lens element having a largest diameter among the multiple lens elements, to collect light at said wide field of view; wherein said second optical group comprises a doublet, which is configured to compensate for oblique aberrational error, and an aspheric lens element, which is configured to compensate for astigmatism error, wherein said optical assembly for a digital camera having a wide field of view in excess of 135 degrees.