Device and Method for Direct Optical Image Capture of Documents and/or Live Skin Areas without Optical Imaging Elements

摘要

A device and method for direct optical recording of security-related objects without optically imaging elements is disclosed. Direct optical recording of skin prints and documents, wherein interference through ambient light is excluded, is met by a sensor layer with TFT technology arranged on a substrate layer transparent at least in the visible wavelength range. Light-sensitive elements of the sensor layer have a distance from the object of less than the mean pixel spacing defined by the pixel grid and have in each instance a control of the exposure time. A primary light-emitting layer is constructed to illuminate the object by at least light portions from direction of the sensor layer through the placement surface. All layers of the layer body located between primary light-emitting layer and placement surface transmit at least portions of light in the visible wavelength range.

主权项

1. A device for direct optical recording of security-related objects without optically imaging elements, the device comprising:
a placement surface for the objects and a sensor layer disposed under the objects, the sensor layer having light-sensitive elements in a two-dimensional pixel grid; the sensor layer being disposed in a layer body with a circuitry based on thin film transistor (TFT) electronics; the sensor layer is located on a substrate layer which is transparent at least in a visible wavelength range; the light-sensitive elements of the sensor layer being disposed at a distance of less than a mean pixel spacing from an object to be recorded on the placement surface, the mean pixel spacing being defined by the pixel grid; the light-sensitive elements having in each instance an electronic control unit within the sensor layer for controlling the exposure time; and a light source being a primary light-emitting layer, wherein at least light portions of the primary light-emitting layer can illuminate the object to be recorded from a direction of the sensor layer through the placement surface, and wherein all layers of the layer body which disposed between the primary light-emitting layer and the placement surface transmit at least portions of light in the visible wavelength range; wherein the security-related objects are at least one object of the groups personal identification documents, passports, driver's licenses and fingerprints or handprints.