| 摘要 |
The present invention is aimed at simplifying the structure, operating conditions and ensuring a required placement of an individual to be identified in the focal plane of the optical system, in order to obtain a sharp image of the iris. The above object has been achieved by the fact that a device for obtaining an iris image comprises an image recording means 1 with a processing unit 2, an optical projection system 3 and a number of figures and/or bodies 4 placed in series along the axis of said system, wherein said figures and/ or bodies 4 being made and installed such that their images are projected on a focal point of the optical system in the form of a common matched figure. In doing so, said figures and/or bodies 4 may be made of the same or different shape such that a single image from the totality of separate bodies and figures is formed at the focus of the optical system. Moreover, said figures and/or bodies 4 may be made luminous or illuminated. |
