Daniel F Maase

7199868, Apr 3, 2007

Oct 27, 2005

11/261401

Daniel Frederick Maase - Plymouth MN, US
David Stoltzmann - Bayport MN, US
Bryan Scott - Albertville MN, US

Identix Incorporated - Minnetonka MN

G06K 9/74

356 71

A system for optically imaging an object includes an optical platen having an object receiving surface. The object receiving surface is illuminated by a multi-color light source, and a color imaging system forms an image of the object on the object receiving surface.

7455424, Nov 25, 2008

Jan 25, 2007

11/698601

Daniel Frederick Maase - Plymouth MN, US
David Stoltzmann - Bayport MN, US
Bryan Scott - Albertville MN, US

Identix Incorporated - Minnetonka MN

F21V 9/00

362231

A system for optically imaging an object includes an optical platen having an object receiving surface. The object receiving surface is illuminated by a multi-color light source, and a color imaging system forms an image of the object on the object receiving surface.

8320645, Nov 27, 2012

Sep 4, 2008

12/204558

Daniel Frederick Maase - Plymouth MN, US

Identix Incorporated - Bloomington MN

G06K 9/00

382124, 382126, 382127

Systems, devices and methods for providing rolled fingerprint capture and palm capture capability in a device having reduced size are provided. In certain embodiments, the systems and methods provide capture of rolled fingerprints, slap fingerprints and palm prints in one continuous workflow in a compact device. In certain embodiments, moisture discriminating optics and/or enhanced definition image formation previously achieved only in devices designed for capturing only fingerprints are provided. In certain embodiments, the systems employ a single scanning device to capture 500 ppi and/or 1000 ppi palm and fingerprint images.

8354640, Jan 15, 2013

Sep 9, 2010

12/878535

John D. Hamre - Plymouth MN, US
Daniel F. Maase - Plymouth MN, US

Identix Incorporated - Bloomington MN

G02F 1/295
G01J 5/08

2503381, 385 10

Apparatus and methods for providing an optically based planar scanner for generating an image are provided. In one embodiment, the apparatus includes a switchable Bragg grating. An area of the switchable Bragg grating is configured to be activated to direct light to a platen. The platen is configured to reflect the light to a waveguide or to refract the light. The light reflected to the waveguide is guided to a light detector. By activating a number of the areas of the switchable Bragg grating and measuring the intensity of the light with a light detector, an image of an object contacting the platen may be formed.

57487669, May 5, 1998

Apr 30, 1996

8/640006

Daniel Frederick Maase - Campbell CA
Thomas Frank Sartor - Sunnyvale CA

Identix Incorporated - Sunnyvale CA

G06K 900
G06K 920

382124

A fingerprint image capture system reduces tip smear by ceasing to update a data array characteristic of the rolled fingerprint image behind an advancing freeze column at least about half way from the trailing edge to the leading edge of a finger contact strip.

55283551, Jun 18, 1996

Mar 11, 1994

8/209804

Daniel F. Maase - Campbell CA
Thomas F. Sartor - Sunnyvale CA

Idnetix Incorporated - Sunnyvale CA

G06K 900

356 71

An electro-optic palm scanner system employing a non-planar platen for obtaining high quality palmprints and heelprints. The platen includes an upper contact surface having a convex portion for contacting a palm to be imaged, and a planar portion for contacting the heel of the hand. The imaging system includes an optical carriage movably secured to a frame. The carriage supports a light source, lens system, and light detector. Total internal reflection occurs when light is incident on the platen at an angle greater than a critical angle of the platen, providing identifying information. The detector may include a linear CCD array which detects ridges and valleys in the hand to obtain image data. The image data is processed and the corresponding print of the heel or hand may be displayed on a video screen, and stored. The images of the palm and heel may be merged to form a single image.

58254749, Oct 20, 1998

Oct 27, 1995

8/549152

Daniel Frederick Maase - Campbell CA

Identix Corporation - Sunnyvale CA

G06K 900

356 71

The invention provides a movable cover for a finger receiving surface of an optical platen in a fingerprint imaging device. A heater incorporated into the platen cover applies controlled heat to the finger receiving surface when the cover is closed over the platen. Maintaining the finger receiving surface within a selected temperature range that is at about skin temperature helps to inhibit condensation of moisture from a subject's fingers onto the finger receiving surface.