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    • 1. 发明申请
    • PERSONAL IDENTIFICATION
    • 个人识别
    • WO1997046980A1
    • 1997-12-11
    • PCT/GB1997001526
    • 1997-06-06
    • BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANYSEAL, Christopher, HenryGIFFORD, Maurice, MerrickMcCARTNEY, David, John
    • BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY
    • G07C09/00
    • A61B3/1216G06K9/00604G06K9/2018G06K9/228G07C9/00158
    • An optical apparatus which records light (B) reflected from one or more of a user's facial features is disclosed. Whilst the image is captured, visible light (A) from a display (170) or other scene to be viewed by the user passes to the user's eye (110). Prior apparatuses of this type have been arranged such that a significant proportion of the light reflected from the user's face is not incident on an image capture device inside the apparatus. The embodiment described is a portable iris pattern capture device (12). In the embodiment near-infrared light (B) is directed towards the user's eye (110), from where it is reflected back into the apparatus. Visible light (A) from an LCD display (170) mounted at the rear of the apparatus travels out to the user's eye (110) from the apparatus. A hot mirror (145) inside the apparatus directs the near-infrared light (B) reflected from the user's eye to a camera unit (135), and does not significantly attenuate the visible light (A) emanating from the display (170).
    • 公开了记录从用户的面部特征中的一个或多个反射的光(B)的光学装置。 在拍摄图像的同时,来自显示器(170)或用户观看的其他场景的可见光(A)传递给用户的眼睛(110)。 已经布置了这种类型的现有装置,使得从用户的脸部反射的大部分光不入射到设备内部的图像捕获装置上。 所描述的实施例是便携式虹膜图案捕获装置(12)。 在该实施例中,近红外光(B)被指向用户的眼睛(110),从其被反射回设备。 安装在设备后部的来自LCD显示器(170)的可见光(A)从该设备行进到用户的眼睛(110)。 装置内部的热反射镜(145)将从用户眼睛反射的近红外光(B)引导到相机单元(135),并且不显着地衰减从显示器(170)发出的可见光(A)。