Image Pixel, Image Acquisition Device, Fingerprint Acquisition Apparatus, and Display Apparatus

Abstract

Disclosed are an imaging pixel, an image acquisition device, a fingerprint acquisition apparatus, and a display apparatus supporting an acquisition function. The imaging pixel includes a cavity (1) in which an optical-to-electrical conversion unit is accommodated. A light blocking film (3) with a light transmission pinhole (2) covers over the cavity (1), and a transparent medium layer (4) and a microlens (5) are sequentially disposed on the light blocking film (3) from bottom to top. The microlens (5), the transparent medium layer (4), and the light transmission pinhole (2) are provided so that the imaging pixel has an object-side field of view (6) with a confined angle of view. An image point or an image spot of an object point within the object-side field (6) of view falls within the light transmission pinhole (2) of the light blocking film (3); and an image point or an image spot of an object point outside the object-side field (6) of view falls outside the light transmission pinhole (2). The pinhole on the light blocking film and the microlens confine an incident light path, so that the imaging pixel has a narrow field of view. An image acquisition device based on the imaging pixel with the narrow field of view can confine an incident light path without a lens system or a pinhole imaging system, so that it becomes possible that the image acquisition device can become thinner so as to integrate with another device while acquiring a clear image.

Dependencies are inferred from the claim text.