Class / Patent application number | Description | Number of patent applications / Date published |
382127000 | With a prism | 10 |
20080273771 | APPARATUS FOR CAPTURING A HIGH QUALITY IMAGE OF A MOIST FINGER - An apparatus for capturing the image of a wet/moist fingerprint. The apparatus includes: a prism having an imaging plane on which a finger having valleys and ridges is place, a bottom plane parallel to the imaging plane and a reflective plane intercepting the imaging plane and intercepting the bottom plane at an angle α; a light source for generating a light with an incident angle of approximately 0° with respect to a surface normal of the imaging plane; and a lens for capturing light reflected from the reflective plane. The apparatus further includes an image sensor for generating an image of the valleys and ridges of the finger, wherein the reflective plane is arranged in such a way to meet the equation of α>45 +(a sin(n | 11-06-2008 |
20080298650 | Optical finger print acquisition apparatus using a prism - An optical fingerprint acquisition apparatus using a prism, which can improve the quality of a fingerprint image acquired by an image sensor, is provided. The optical fingerprint acquisition apparatus using the prism includes a pentagon prism including an input face | 12-04-2008 |
20100183200 | Fingerprint Input Module - A fingerprint input module includes at least one prism sheet, an image-capturing unit, and a planar light source. The prism sheet has a micro-prism array. The image-capturing unit has a lens. The planar light source is disposed between the prism sheet and the image-capturing unit, and has a through hole in optical alignment with the lens for passage of light from the micro-prism array to the lens. | 07-22-2010 |
20110200237 | PATTERN MATCHING DEVICE AND PATTERN MATCHING METHOD - A pattern matching device | 08-18-2011 |
20120087555 | IMAGING DEVICE HAVING A PRISMATIC ELEMENT - An imaging device includes a transparent prismatic element having two contiguous inlet surfaces separated by a ridge. A lens and an image sensor make it possible to acquire images, each including a reproduction of a first pattern located against one of the inlet surfaces, and a reproduction of a second imaged pattern through the other inlet surface. Such a device can be used in a biometric detection apparatus for detecting both a skin print and the vein distribution of a user. The device can also be used in a reading terminal capable of detecting a skin print and a machine-readable tape. | 04-12-2012 |
20140023249 | AUTHENTICATION APPARATUS AND AUTHENTICATION METHOD - The present invention is an authentication apparatus comprising: a prism of an approximately quadrangle-frustum shape, the prism of the approximately quadrangle-frustum shape is arranged so that a bottom side, out of two parallel surfaces of the prism of approximately quadrangle-frustum shape, is a placing surface side for a finger; a first imaging means is arranged below a top surface parallel to the bottom surface, the first imaging means that images an image of the finger transmitted through the top surface; a light source that radiates light to at least one side surface of a first set of side surfaces, out of two sets of side surfaces of the approximately quadrangle-frustum shape that face each other; and a second imaging means that images the image of the finger transmitted through a second set of side surfaces, out of the two sets of side surfaces. | 01-23-2014 |
20140286548 | METHOD AND APPARATUS FOR IDENTIFYING FAKE FINGERPRINT - An apparatus for identifying a fake fingerprint, the apparatus comprising: a prism having a fingerprint contact surface with which a fingerprint comes in contacted; an internal light source configured to irradiate light from the inside of the prism; an external light source configured to irradiate light from the outside of the prism; an image sensor configured to acquire diffused light image by the internal light source and transmitted light image by the external light source; and a controller configured to compare the diffused light image and the transmitted light image acquired by the image sensor to determine whether the fingerprint is a fake fingerprint or not. | 09-25-2014 |
20140369575 | SYSTEM AND METHOD OF CAPTURING AND PRODUCING BIOMETRIC-MATCHING QUALITY FINGERPRINTS AND OTHER TYPES OF DACTYLOGRAPHIC IMAGES WITH A MOBILE DEVICE - An optical module includes a housing with a lighting mechanism, an aperture formed therein, and a window that frames a transparent surface adapted to contact a skin surface of a person, for example, a fingertip. The lighting mechanism provides light to illuminate the skin surface placed upon the transparent surface. A prism has a first side facing the lighting mechanism, a second side at the window, and a third side through which a dactylographic image exits the prism. One or more light reflecting surfaces are disposed within the housing to reflect the dactylographic image towards the housing aperture. The optical module is coupled to a mobile device having a camera, with the aperture of the housing aligning with a lens of the camera. The camera acquires the dactylographic image, and the mobile device adjusts this dactylographic image to produce a dactylographic image suitable for biometric matching. | 12-18-2014 |
20180025204 | OPTICAL FINGERPRINT SENSOR WITH PRISM MODULE | 01-25-2018 |
20180025205 | FINGERPRINT IDENTIFICATION MODULE | 01-25-2018 |