Patent ID: 9179840
Filing Date: 2015-11-10
Classification: A61B

Abstract:
1. An eye imaging optical apparatus, comprising: a transparent optical window with a frontal surface fit with the profile of the cornea of the eye and coated with a layer of optical reflection reduction coating; a transparent optical lens with conical shape located behind the optical window and separated with a small gap, with its conical surface coated with a thin optically absorptive layer, and with its frontal surface made with profile as same or similar to the profile of the back surface of the optical window; a first relay optical lens, which comprises one or multiple lenses, to form a real image of the internal eye structures, or fundus near its back focal plane; a second relay optical lens, which comprises one or multiple lenses, with its front focal plane located next to the back focal plane of the first relay lens to form the image of the internal structure, or fundus at the infinity; a miniature optical lens, which comprises multiple optical lenses, with its optical aperture located near the back focal plane of the second relay lens and along the optical axis formed by the optical lenses before it; and a miniature electronic area or image sensor, located at the back focal plane of the miniature optical lens in the front of it, to capture the images of the internal structure of the eye or fundus; wherein a real image of the optical aperture of the miniature optical lens is formed near the anterior surface of the crystalline lens of the eye or the iris plane when the eye imaging apparatus is used to photograph the posterior segment of an eye.