Patent ID: 9366843
Filing Date: 2016-06-14
CPC Classification: A61B,G02B,G06K,H04N

Claim Text:
1. An imaging apparatus for acquiring an image of a subject's iris for iris image recognition, the imaging apparatus comprising: an image sensor comprising an imaging surface; and an optical assembly interposed between an object plane and the image sensor for imaging the object plane onto the imaging surface, the optical assembly comprising an image-side surface and an object-side surface; wherein the imaging apparatus is configured to satisfy the relations: D1≦6 mm; PX PX D2≦500 mm; and wherein: D1 is a distance between the object-side surface of the optical assembly and the imaging surface; D2 is a distance between the object-side surface of the optical assembly and the object plane, such that the absolute value of image magnification (M) corresponding to an imaged object positioned at the object plane is greater or equal to M PX PX